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Seenivasan M, Yang CC, Wu SH, Chang JK, Jose R. Systematic study of Co-free LiNi 0.9Mn 0.07Al 0.03O 2 Ni-rich cathode materials to realize high-energy density Li-ion batteries. J Colloid Interface Sci 2024; 661:1070-1081. [PMID: 38368230 DOI: 10.1016/j.jcis.2024.02.040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 01/29/2024] [Accepted: 02/04/2024] [Indexed: 02/19/2024]
Abstract
The growing use of EVs and society's energy needs require safe, affordable, durable, and eco-friendly high-energy lithium-ion batteries (LIBs). To this end, we synthesized and investigated the removal of Co from Al-doped Ni-rich cathode materials, specifically LiNi0.9Co0.1Al0.0O2 (NCA-0), LiNi0.9Mn0.1Al0.0O2 (NMA-0), LiNi0.9Mn0.07Al0.03O2 (NMA-3), intending to enhance LIB performance and reduce the reliance on cobalt, a costly and scarce resource. Our study primarily focuses on how the removal of Co affects the material characteristics of Ni-rich cathode material and further introduces aluminum into the cathode composition to study its impacts on electrochemical properties and overall performance. Among the synthesized samples, we discovered that the NMA-3 sample, modified with 3 mol% of Al, exhibited superior battery performance, demonstrating the effectiveness of aluminum in promoting cathode stability. Furthermore, the Al-modified cathode showed promising cycle life under normal and high-temperature conditions. Our NMA-3 demonstrated remarkable capacity retention of ∼ 88 % at 25 °C and ∼ 81 % at 45 °C after 200 cycles at 1C, within a voltage range of 2.8-4.3 V, closely matching the performances of conventional NCM and NCA cathodes. Without cobalt, the cathodes exhibited increased cation disorder leading to inferior rate capabilities at high C-rates. In-situ transmission XRD analysis revealed that the introduction of Al has reduced the phase change and provided much-needed stability to the overall structure of the Co-free NMA-3. Altogether, the findings suggest that our aluminum-modified NMA-3 sample offers a promising approach to developing Co-free, Ni-rich cathodes, effectively paving the way toward sustainable, high-energy-density LIBs.
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Affiliation(s)
- Manojkumar Seenivasan
- Battery Research Center of Green Energy, Ming Chi University of Technology, New Taipei City 24301, Taiwan, ROC
| | - Chun-Chen Yang
- Battery Research Center of Green Energy, Ming Chi University of Technology, New Taipei City 24301, Taiwan, ROC; Department of Chemical Engineering, Ming Chi University of Technology, New Taipei City 24301, Taiwan, ROC; Department of Chemical and Materials Engineering & Center for Sustainability and Energy Technologies, Chang Gung University, Taoyuan City 333, Taiwan.
| | - She-Huang Wu
- Battery Research Center of Green Energy, Ming Chi University of Technology, New Taipei City 24301, Taiwan, ROC; Graduate Institute of Science and Technology, National Taiwan University of Science and Technology, 43, Sec. 4, Keelung Road, Taipei 106, Taiwan, ROC
| | - Jeng-Kuei Chang
- Department of Materials Science and Engineering, National Yang-Ming Chiao Tung University, 1001 University Road, Hsinchu, 30010, Taiwan, ROC
| | - Rajan Jose
- Nanostructured Renewable Energy Materials Laboratory, Faculty of Industrial Sciences and Technology, University Malaysia Pahang, 26300 Kuantan, Malaysia
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Hendri YB, Kuo LY, Seenivasan M, Wu YS, Wu SH, Chang JK, Jose R, Ihrig M, Kaghazchi P, Yang CC. Two birds with one stone: One-pot concurrent Ta-doping and -coating on Ni-rich LiNi 0.92Co 0.04Mn 0.04O 2 cathode materials with fiber-type microstructure and Li +-conducting layer formation. J Colloid Interface Sci 2024; 661:289-306. [PMID: 38301467 DOI: 10.1016/j.jcis.2024.01.094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 12/19/2023] [Accepted: 01/13/2024] [Indexed: 02/03/2024]
Abstract
A novel scalable Taylor-Couette reactor (TCR) synthesis method was employed to prepare Ta-modified LiNi0.92Co0.04Mn0.04O2 (T-NCM92) with different Ta contents. Through experiments and density functional theory (DFT) calculations, the phase and microstructure of Ta-modified NCM92 were analyzed, showing that Ta provides a bifunctional (doping and coating at one time) effect on LiNi0.92Co0.04Mn0.04O2 cathode material through a one-step synthesis process via a controlling suitable amount of Ta and Li-salt. Ta doping allows the tailoring of the microstructure, orientation, and morphology of the primary NCM92 particles, resulting in a needle-like shape with fine structures that considerably enhance Li+ ion diffusion and electrochemical charge/discharge stability. The Ta-based surface-coating layer effectively prevented microcrack formation and inhibited electrolyte decomposition and surface-side reactions during cycling, thereby significantly improving the electrochemical performance and long-term cycling stability of NCM92 cathodes. Our as-prepared NCM92 modified with 0.2 mol% Ta (i.e., T2-NCM92) exhibits outstanding cyclability, retaining 84.5 % capacity at 4.3 V, 78.3 % at 4.5 V, and 67.6 % at 45 ℃ after 200 cycles at 1C. Even under high-rate conditions (10C), T2-NCM92 demonstrated a remarkable capacity retention of 66.9 % after 100 cycles, with an initial discharge capacity of 157.6 mAh g-1. Thus, the Ta modification of Ni-rich NCM92 materials is a promising option for optimizing NCM cathode materials and enabling their use in real-world electric vehicle (EV) applications.
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Affiliation(s)
- Yola Bertilsya Hendri
- Battery Research Center of Green Energy, Ming Chi University of Technology, Taishan, New Taipei City 24301, Taiwan
| | - Liang-Yin Kuo
- Battery Research Center of Green Energy, Ming Chi University of Technology, Taishan, New Taipei City 24301, Taiwan; Department of Chemical Engineering, Ming Chi University of Technology, Taishan, New Taipei City 24301, Taiwan
| | - Manojkumar Seenivasan
- Battery Research Center of Green Energy, Ming Chi University of Technology, Taishan, New Taipei City 24301, Taiwan
| | - Yi-Shiuan Wu
- Battery Research Center of Green Energy, Ming Chi University of Technology, Taishan, New Taipei City 24301, Taiwan
| | - She-Huang Wu
- Battery Research Center of Green Energy, Ming Chi University of Technology, Taishan, New Taipei City 24301, Taiwan; Graduate Institute of Science and Technology, National Taiwan University of Science and Technology, 43, Sec. 4, Keelung Road, Taipei 106, Taiwan
| | - Jeng-Kuei Chang
- Department of Materials Science and Engineering, National Yang Ming Chiao Tung University, 1001 University Road, Hsinchu 30010, Taiwan
| | - Rajan Jose
- Nanostructured Renewable Energy Materials Laboratory, Faculty of Industrial Sciences and Technology, University Malaysia Pahang, 26300 Kuantan, Malaysia
| | - Martin Ihrig
- Department of Chemical Engineering, National Taiwan University of Science and Technology, No. 43, Keelung Rd., Sec. 4, Da'an Dist., Taipei City 106335, Taiwan
| | - Payam Kaghazchi
- Institute of Energy and Climate Research, Materials Synthesis and Processing (IEK-1) Forschungszentrum Jülich GmbH, 52428 Jülich, Germany; MESA+ Institute for Nanotechnology, University of Twente, 7500 AE Enschede, The Netherlands
| | - Chun-Chen Yang
- Battery Research Center of Green Energy, Ming Chi University of Technology, Taishan, New Taipei City 24301, Taiwan; Department of Chemical Engineering, Ming Chi University of Technology, Taishan, New Taipei City 24301, Taiwan; Department of Chemical and Materials Engineering & Center for Sustainability and Energy Technology, Chang Gung University, Taoyuan City 333, Taiwan.
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Mengesha TH, Jeyakumar J, Hendri YB, Wu YS, Yang CC, Pham QT, Chern CS, Brunklaus G, Winter M, Hwang BJ. Concerted Effect of Ion- and Electron-Conductive Additives on the Electrochemical and Thermal Performances of the LiNi 0.8Co 0.1Mn 0.1O 2 Cathode Material Synthesized by a Taylor-Flow Reactor for Lithium-Ion Batteries. ACS Appl Mater Interfaces 2024. [PMID: 38606845 DOI: 10.1021/acsami.3c19386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/13/2024]
Abstract
To address the issue that a single coating agent cannot simultaneously enhance Li+-ion transport and electronic conductivity of Ni-rich cathode materials with surface modification, in the present study, we first successfully synthesized a LiNi0.8Co0.1Mn0.1O2 (NCM811) cathode material by a Taylor-flow reactor followed by surface coating with Li-BTJ and dispersion of vapor-grown carbon fibers treated with polydopamine (PDA-VGCF) filler in the composite slurry. The Li-BTJ hybrid oligomer coating can suppress side reactions and enhance ionic conductivity, and the PDA-VGCFs filler can increase electronic conductivity. As a result of the synergistic effect of the dual conducting agents, the cells based on the modified NCM811 electrodes deliver superior cycling stability and rate capability, as compared to the bare NCM811 electrode. The CR2032 coin-type cells with the NCM811@Li-BTJ + PDA-VGCF electrode retain a discharge specific capacity of ∼92.2% at 1C after 200 cycles between 2.8 and 4.3 V (vs Li/Li+), while bare NCM811 retains only 84.0%. Moreover, the NCM811@Li-BTJ + PDA-VGCF electrode-based cells reduced the total heat (Qt) by ca. 7.0% at 35 °C over the bare electrode. Remarkably, the Li-BTJ hybrid oligomer coating on the surface of the NCM811 active particles acts as an artificial cathode electrolyte interphase (ACEI) layer, mitigating irreversible surface phase transformation of the layered NCM811 cathode and facilitating Li+ ion transport. Meanwhile, the fiber-shaped PDA-VGCF filler significantly reduced microcrack propagation during cycling and promoted the electronic conductance of the NCM811-based electrode. Generally, enlightened with the current experimental findings, the concerted ion and electron conductive agents significantly enhanced the Ni-rich cathode-based cell performance, which is a promising strategy to apply to other Ni-rich cathode materials for lithium-ion batteries.
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Affiliation(s)
- Tadesu Hailu Mengesha
- Battery Research Center of Green Energy, Ming Chi University of Technology, New Taipei City 243303, Taiwan, ROC
- College of Natural and Computational Science, Department of Chemistry, Wolkite University, Wolkite 07, SNNPR, Ethiopia
| | - Juliya Jeyakumar
- Battery Research Center of Green Energy, Ming Chi University of Technology, New Taipei City 243303, Taiwan, ROC
| | - Yola Bertilsya Hendri
- Battery Research Center of Green Energy, Ming Chi University of Technology, New Taipei City 243303, Taiwan, ROC
| | - Yi-Shiuan Wu
- Battery Research Center of Green Energy, Ming Chi University of Technology, New Taipei City 243303, Taiwan, ROC
| | - Chun-Chen Yang
- Battery Research Center of Green Energy, Ming Chi University of Technology, New Taipei City 243303, Taiwan, ROC
- Department of Chemical Engineering, Ming Chi University of Technology, New Taipei City 243303, Taiwan, ROC
- Department of Chemical and Materials Engineering & Center for Sustainability and Energy Technologies, Chang Gung University, Taoyuan City 333323, Taiwan
| | - Quoc-Thai Pham
- Department of Chemical and Materials Engineering, National Ilan University, Yilan County, Yilan City, 260007, Taiwan, ROC
| | - Chorng-Shyan Chern
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei City 106335, Taiwan, ROC
| | - Gunther Brunklaus
- Helmholtz Institute Münster, IEK-12, Forschungszentrum Jülich GmbH, Corrensstraße 46, Münster 48149, Germany
| | - Martin Winter
- Helmholtz Institute Münster, IEK-12, Forschungszentrum Jülich GmbH, Corrensstraße 46, Münster 48149, Germany
- University of Münster, MEET Battery Research Center, Institute of Physical Chemistry, Corrensstraße 46, Münster 48149, Germany
| | - Bing Joe Hwang
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei City 106335, Taiwan, ROC
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Wu XW, Karuppiah C, Wu YS, Zhang BR, Hsu LF, Shih JY, James Li YJ, Hung TF, Kannan Ramaraj S, Jose R, Yang CC. Unveiling high-power and high-safety lithium-ion battery separator based on interlayer of ZIF-67/cellulose nanofiber with electrospun poly(vinyl alcohol)/melamine nonwoven membranes. J Colloid Interface Sci 2024; 658:699-713. [PMID: 38141392 DOI: 10.1016/j.jcis.2023.12.098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2023] [Revised: 12/11/2023] [Accepted: 12/14/2023] [Indexed: 12/25/2023]
Abstract
Due to the poor thermal stability of conventional separators, lithium-ion batteries require a suitable separator to maintain system safety for long-term cycling performance. It must have high porosity, superior electrolyte uptake ability, and good ion-conducting properties even at high temperatures. In this work, we demonstrate a novel composite membrane based on sandwiching of zeolitic imidazole frameworks-67 decorated cellulose acetate nanofibers (ZIF-67@CA) with electrospun poly(vinyl alcohol)/melamine (denoted as PVAM) nonwoven membranes. The as-prepared sandwich-type membranes are called PVAM/x%ZIF-67@CA/PVAM. The middle layer of composite membranes is primarily filled with different weight percentages of ZIF-67 nanoparticles (x = 5, 15, and 25 wt%), which both reduces the non-uniform porous structure of CA and increases its thermal stability. Therefore, our sandwich-type PVAM/x%ZIF-67@CA/PVAM membrane exhibits a higher thermal shrinkage effect at 200 °C than the commercial polyethylene (PE) separator. Due to its high electrolyte uptake (646.8%) and porosity (85.2%), PVAM/15%ZIF-67@CA/PVAM membrane achieved high ionic conductivity of 1.46 × 10-3 S cm-1 at 70 °C, as compared to the commercial PE separator (ca. 6.01 × 10-4 S cm-1 at 70 °C). Besides, the cell with PVAM/15%ZIF-67@CA/PVAM membrane shows an excellent discharge capacity of about 167.5 mAh g-1after 100 cycles at a 1C rate with a capacity retention of 90.3%. The ZIF-67 fillers in our sandwich-type composite membrane strongly attract anions (PF6-) through Lewis' acid-base interaction, allowing uniform Li+ ion transport and suppressing Li dendrites. As a result, we found that the PVAM/15%ZIF-67@CA/PVAM composite nonwoven membrane is applicable to high-power, high-safety lithium-ion battery systems that can be used in electric vehicles (EVs).
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Affiliation(s)
- Xiao-Wei Wu
- Battery Research Center of Green Energy, Ming Chi University of Technology, New Taipei City 24301, Taiwan, ROC; Department of Chemical Engineering, Ming Chi University of Technology, New Taipei City 243, Taiwan, ROC
| | - Chelladurai Karuppiah
- Battery Research Center of Green Energy, Ming Chi University of Technology, New Taipei City 24301, Taiwan, ROC.
| | - Yi-Shiuan Wu
- Battery Research Center of Green Energy, Ming Chi University of Technology, New Taipei City 24301, Taiwan, ROC
| | - Bo-Rong Zhang
- Battery Research Center of Green Energy, Ming Chi University of Technology, New Taipei City 24301, Taiwan, ROC; Department of Chemical Engineering, Ming Chi University of Technology, New Taipei City 243, Taiwan, ROC
| | - Li-Fan Hsu
- Battery Research Center of Green Energy, Ming Chi University of Technology, New Taipei City 24301, Taiwan, ROC
| | - Jeng-Ywan Shih
- Battery Research Center of Green Energy, Ming Chi University of Technology, New Taipei City 24301, Taiwan, ROC; Department of Chemical Engineering, Ming Chi University of Technology, New Taipei City 243, Taiwan, ROC
| | - Ying-Jeng James Li
- Battery Research Center of Green Energy, Ming Chi University of Technology, New Taipei City 24301, Taiwan, ROC; Department of Chemical Engineering, Ming Chi University of Technology, New Taipei City 243, Taiwan, ROC
| | - Tai-Feng Hung
- Battery Research Center of Green Energy, Ming Chi University of Technology, New Taipei City 24301, Taiwan, ROC
| | - Sayee Kannan Ramaraj
- PG and Research Department of Chemistry, Thiagarajar College, Madurai, Tamil Nadu, India
| | - Rajan Jose
- Center for Advanced Intelligent Materials & Faculty of Industrial Sciences and Technology, University Malaysia Pahang Al-Sultan Abdullah, 26300 Kuantan, Pahang, Malaysia
| | - Chun-Chen Yang
- Battery Research Center of Green Energy, Ming Chi University of Technology, New Taipei City 24301, Taiwan, ROC; Department of Chemical Engineering, Ming Chi University of Technology, New Taipei City 243, Taiwan, ROC; Department of Chemical and Materials Engineering, Chang Gung University, Kwei-shan, Taoyuan 333, Taiwan, ROC.
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Serbessa G, Taklu BW, Nikodimos Y, Temesgen NT, Muche ZB, Merso SK, Yeh TI, Liu YJ, Liao WS, Wang CH, Wu SH, Su WN, Yang CC, Hwang BJ. Boosting the Interfacial Stability of the Li 6PS 5Cl Electrolyte with a Li Anode via In Situ Formation of a LiF-Rich SEI Layer and a Ductile Sulfide Composite Solid Electrolyte. ACS Appl Mater Interfaces 2024; 16:10832-10844. [PMID: 38359779 PMCID: PMC10910511 DOI: 10.1021/acsami.3c14763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 01/25/2024] [Accepted: 01/30/2024] [Indexed: 02/17/2024]
Abstract
Due to its good mechanical properties and high ionic conductivity, the sulfide-type solid electrolyte (SE) can potentially realize all-solid-state batteries (ASSBs). Nevertheless, challenges, including limited electrochemical stability, insufficient solid-solid contact with the electrode, and reactivity with lithium, must be addressed. These challenges contribute to dendrite growth and electrolyte reduction. Herein, a straightforward and solvent-free method was devised to generate a robust artificial interphase between lithium metal and a SE. It is achieved through the incorporation of a composite electrolyte composed of Li6PS5Cl (LPSC), polyethylene glycol (PEG), and lithium bis(fluorosulfonyl)imide (LiFSI), resulting in the in situ creation of a LiF-rich interfacial layer. This interphase effectively mitigates electrolyte reduction and promotes lithium-ion diffusion. Interestingly, including PEG as an additive increases mechanical strength by enhancing adhesion between sulfide particles and improves the physical contact between the LPSC SE and the lithium anode by enhancing the ductility of the LPSC SE. Moreover, it acts as a protective barrier, preventing direct contact between the SE and the Li anode, thereby inhibiting electrolyte decomposition and reducing the electronic conductivity of the composite SE, thus mitigating the dendrite growth. The Li|Li symmetric cells demonstrated remarkable cycling stability, maintaining consistent performance for over 3000 h at a current density of 0.1 mA cm-2, and the critical current density of the composite solid electrolyte (CSE) reaches 4.75 mA cm-2. Moreover, the all-solid-state lithium metal battery (ASSLMB) cell with the CSEs exhibits remarkable cycling stability and rate performance. This study highlights the synergistic combination of the in-situ-generated artificial SE interphase layer and CSEs, enabling high-performance ASSLMBs.
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Affiliation(s)
- Gashahun
Gobena Serbessa
- Nano-electrochemistry
Laboratory, Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei City 106, Taiwan
- Battery
Research Center of Green Energy, Ming-Chi
University of Technology, New Taipei
City 24301, Taiwan
| | - Bereket Woldegbreal Taklu
- Nano-electrochemistry
Laboratory, Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei City 106, Taiwan
| | - Yosef Nikodimos
- Nano-electrochemistry
Laboratory, Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei City 106, Taiwan
| | - Nigusu Tiruneh Temesgen
- Nano-electrochemistry
Laboratory, Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei City 106, Taiwan
| | - Zabish Bilew Muche
- Nano-electrochemistry
Laboratory, Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei City 106, Taiwan
| | - Semaw Kebede Merso
- Nano-electrochemistry
Laboratory, Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei City 106, Taiwan
| | - Tsung-I Yeh
- Nano-electrochemistry
Laboratory, Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei City 106, Taiwan
| | - Ya-Jun Liu
- Nano-electrochemistry
Laboratory, Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei City 106, Taiwan
| | - Wei-Sheng Liao
- Nano-electrochemistry
Laboratory, Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei City 106, Taiwan
| | - Chia-Hsin Wang
- National
Synchrotron Radiation Research Center (NSRRC), Hsinchu 30076, Taiwan
| | - She-Huang Wu
- Nano-electrochemistry
Laboratory, Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei City 106, Taiwan
- Sustainable
Electrochemical Energy Development (SEED) Center, National Taiwan University of Science and Technology, Taipei City 106, Taiwan
| | - Wei-Nien Su
- Nano-electrochemistry
Laboratory, Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei City 106, Taiwan
- Sustainable
Electrochemical Energy Development (SEED) Center, National Taiwan University of Science and Technology, Taipei City 106, Taiwan
| | - Chun-Chen Yang
- Battery
Research Center of Green Energy, Ming-Chi
University of Technology, New Taipei
City 24301, Taiwan
- Department
of Chemical Engineering, Ming Chi University
of Technology, New Taipei City 24301, Taiwan
| | - Bing Joe Hwang
- Nano-electrochemistry
Laboratory, Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei City 106, Taiwan
- National
Synchrotron Radiation Research Center (NSRRC), Hsinchu 30076, Taiwan
- Sustainable
Electrochemical Energy Development (SEED) Center, National Taiwan University of Science and Technology, Taipei City 106, Taiwan
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He R, Mobit P, Yang CC. Radiobiological Insights of Staged Brachytherapy Using Eye Plaque for Large Uveal Melanoma. Int J Radiat Oncol Biol Phys 2023; 117:e671-e672. [PMID: 37785982 DOI: 10.1016/j.ijrobp.2023.06.2119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) I-125 radioactive seeds embedded in an eye plaque is used to deliver the radiation dose of 85Gy to the apex of the tumor. However, it is challenging to treat a lesion in height (>10 mm) because of a high dose (> 500 Gy) to sclera. A staged radiotherapy (SRT) has been implemented successfully in stereotactic radiosurgery when a single dose is risky for a bigger sized lesion. The hypothesis of this work is that the SRT works for eye plaque brachytherapy of uveal melanoma to break the single fraction into two. To apply the concept of SRT, the following questions need to be answered: What are the two fraction doses? What is the time interval between the two fractions? In this work, the two split fraction doses and time interval are calculated using the "incomplete-repair' model. MATERIALS/METHODS Equation (1) is the linear-quadratic (LQ) model. f(x) is the cell survival curve (SC). Equation (2) and (3) are radiobiological model developed dealing with the split doses by considering the incomplete repair. Ln(f(x)) = -αx - βx2 (1) Ln(fn(x, Ɵ)) = nLn(f(x))-nβx2hn(Ɵ) (2) hn(Ɵ) = (2/n)[ Ɵ/(1- Ɵ)][n-(1- Ɵn)/(1- Ɵ)] (3) Ɵ = exp(-µΔt) (4) x represents the fraction dose, Ɵx is the initial segment of the survival curve, Ɵ determines the rate at which repair proceeds. n is fraction number and µ represent repair constant which equals to ln2/T1/2. T1/2 is the half-life of I-125. For continuous dose vt delivered at dose rate v for time t, with repair constant µ, the LQ model is modified as Ln (f(vt, µ)) = -α(vt) -β(vt)2g(µt) (5) g(µt) = 2[µt-1+exp(-µt)]/(µt)2 (6) Assuming biological effective dose (BED) is the same for the single fraction and split two fractions, SC when n = 1 should be same as when n = 2. Therefore, the equation (7) is derived. Ɵ = [(α/β)x1 - 2(α/β)(x2)2 + (x1)2]/2(x2)2 - 1 (7) x1 is single fraction dose of 85Gy, x2 is the split dose to two fractions. α/β ratio of 10 Gy is used. By fitting the equation (7), the ranges of doses and time intervals were determined. RESULTS The fraction doses and time interval to get the same BED as single fraction of 85 Gy are determined from 45 Gy to 50 Gy with time interval of 22 days to 76 days for staged brachytherapy eye plaque (SBEP). Our result is matched the treatment protocol for SBEP reported, e.g., 1st fraction dose of 40Gy and 50 Gy of 2nd fraction with 73 days of time interval are used. The max. dose of scleral dose is 328 Gy compared to the single fraction scleral dose of 543Gy. CONCLUSION This work could provide guidelines in SBEP in dosage and time interval. The height of tumor matters the most in the SBEP since the taller the tumor, the higher dose to the sclera is. Reference.
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Affiliation(s)
- R He
- Department of Radiation Oncology, University of Mississippi Medical Center, Jackson, MS
| | - P Mobit
- Department of Radiation Oncology, University of Mississippi Medical Center, Jackson, MS
| | - C C Yang
- Department of Radiation Oncology, University of Mississippi Medical Center, Jackson, MS
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Tsai CJ, Ho HW, Yang CC. Difference in Radiotherapeutic Plan of HyperArc-Based and CyberKnife-Based Stereotactic Radiotherapy (SRT) Techniques for Multiple Brain Metastases. Int J Radiat Oncol Biol Phys 2023; 117:e728-e729. [PMID: 37786119 DOI: 10.1016/j.ijrobp.2023.06.2245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) The purpose of this study is to compare the dosimetric quality and dose to surrounding normal tissue of HyperArc-based stereotactic radiotherapy (SRT) technique with a frameless robotic radiosurgery system for patients with multiple brain metastases. MATERIALS/METHODS Nineteen patients with multiple brain metastases (2-5 lesions) treated in our center were enrolled. The prescribed dose was 2100 cGy to 3250 cGy in three to five fractions. In order to determine the dosimetric quality, we compared the conformity index (CI), Gradient radius (GR), homogeneity index (HI), dose distribution in planning target volume, and dose to several organs at risk (OARs). All of the data were compared using pair-T test. RESULTS Both planning systems have prescribed dose coverage to GTV and PTV with no significant difference (P = 0.243; P = 0.312). The conformity index (CI), and homogeneity index (HI) were 1.27 ±0.022, and 1.08 ±0.006, respectively, for HyperArc plan and 1.76 ±0.065 and 1.22 ±0.009, respectively, for the CK plan (both, P< 0.001). The Gradient radius (GR) was 0.732 ±0.056 cm for HyperArc plan and 0.847 ±0.762 cm for CK plan (P = 0.002). These indicated that HyperArc plan had better CI, HI, and GR when compared to CK plan. Maximum dose to brainstem for HyperArc and CK plans were 485.1 ±128.65 and 723.6 ±126.93 cGy, respectively (P < 0.001). Moreover, HyperArc plan had less mean dose to optic chiasm, bilateral eyes, bilateral lens, and bilateral optic nerves (all, P < 0.05). Brain V5, V12, V24 were all much smaller in HyperArc plan (all, P < 0.05), indicating that HyperArc plan delivered less dose to normal brain tissue. CONCLUSION For patients with two to five brain metastases, HyperArc-based SRT provide excellent dosimetric quality and less dose to normal tissue.
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Affiliation(s)
- C J Tsai
- Department of Radiation Oncology, Chi Mei Medical Center, Tainan Taiwan, Tainan, Taiwan
| | - H W Ho
- Department of Radiation Oncology, Chi Mei Medical Center, Tainan Taiwan, Tainan, Taiwan
| | - C C Yang
- Department of Radiation Oncology, Chi Mei Medical Center, Tainan Taiwan, Tainan, Taiwan
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Jeyakumar J, Seenivasan M, Wu YS, Wu SH, Chang JK, Jose R, Yang CC. Preparation of long-term cycling stable ni-rich concentration-gradient NCMA cathode materials for li-ion batteries. J Colloid Interface Sci 2023; 639:145-159. [PMID: 36804788 DOI: 10.1016/j.jcis.2023.02.064] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 02/07/2023] [Accepted: 02/12/2023] [Indexed: 02/16/2023]
Abstract
Nickel-rich (Ni > 90 %) cathodes are regarded as one of the most attractive because of their high energy density, despite their poor stability and cycle life. To improve their performance, in this study we synthesized a double concentration-gradient layered Li[Ni0.90Co0.04Mn0.03Al0.03]O2 oxide (CG-NCMA) using a continuous co-precipitation Taylor-Couette cylindrical reactor (TCCR) with a Ni-rich-core, an Mn-rich surface, and Al on top. The concentration-gradient morphology was confirmed through cross-sectional EDX line scanning. The as-synthesized sample exhibited excellent electrochemical performance at high rates (5C/10C), as well as cyclability (91.5 % after 100 cycles and 70.3 % after 500 cycles at 1C), superior to that (83.4 % and 47.6 %) of its non-concentration-gradient counterpart (UC-NCMA). The Mn-rich surface and presence of Al helped the material stay structurally robust, even after 500 cycles, while also suppressing side reactions between the electrode and electrolyte, resulting in better overall electrochemical performance. These enhancements in performance were studied using TEM, SEM, in-situ-XRD, XPS, CV, EIS and post-mortem analyses. This synthetic method enables the highly scalable production of CG-NCMA samples with two concentration-gradient structures for practical applications in Li-ion batteries.
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Affiliation(s)
- Juliya Jeyakumar
- Battery Research Center of Green Energy, Ming Chi University of Technology, Taishan, New Taipei, City 24301, Taiwan, ROC; Department of Chemical Engineering, Ming Chi University of Technology, Taishan, New Taipei, City 24301, Taiwan, ROC
| | - Manojkumar Seenivasan
- Battery Research Center of Green Energy, Ming Chi University of Technology, Taishan, New Taipei, City 24301, Taiwan, ROC; Department of Chemical Engineering, Ming Chi University of Technology, Taishan, New Taipei, City 24301, Taiwan, ROC
| | - Yi-Shiuan Wu
- Battery Research Center of Green Energy, Ming Chi University of Technology, Taishan, New Taipei, City 24301, Taiwan, ROC
| | - She-Huang Wu
- Battery Research Center of Green Energy, Ming Chi University of Technology, Taishan, New Taipei, City 24301, Taiwan, ROC; Graduate Institute of Science and Technology, National Taiwan University of Science and Technology, 43, Sec. 4, Keelung Road, Taipei 106, Taiwan, ROC
| | - Jeng-Kuei Chang
- Department of Materials Science and Engineering, National Yang Ming Chiao Tung University, 1001 University Road, Hsinchu 30010, Taiwan, ROC
| | - Rajan Jose
- Nanostructured Renewable Energy Materials Laboratory, Faculty of Industrial Sciences and Technology, University Malaysia Pahang, 26300 Kuantan, Malaysia
| | - Chun-Chen Yang
- Battery Research Center of Green Energy, Ming Chi University of Technology, Taishan, New Taipei, City 24301, Taiwan, ROC; Department of Chemical Engineering, Ming Chi University of Technology, Taishan, New Taipei, City 24301, Taiwan, ROC; Department of Chemical and Materials Engineering, and Green Technology Research Center, Chang Gung University, Taoyuan City 333, Taiwan, ROC.
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Liao WL, Abdelaal MM, Amirtha RM, Fang CC, Yang CC, Hung TF. In Situ Construction of Nitrogen-Doped and Zinc-Confined Microporous Carbon Enabling Efficient Na +-Storage Abilities. Int J Mol Sci 2023; 24:ijms24108777. [PMID: 37240130 DOI: 10.3390/ijms24108777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 05/08/2023] [Accepted: 05/12/2023] [Indexed: 05/28/2023] Open
Abstract
Benefiting from the additional active sites for sodium-ion (Na+) adsorption and porous architecture for electrolyte accessibility, nitrogen-doped porous carbon has been considered the alternative anode material for Na+-storage applications. In this study, nitrogen-doped and zinc-confined microporous carbon (N,Z-MPC) powders are successfully prepared by thermally pyrolyzing the polyhedral ZIF-8 nanoparticles under an argon atmosphere. Following the electrochemical measurements, the N,Z-MPC not only delivers good reversible capacity (423 mAh/g at 0.02 A/g) and comparable rate capability (104 mAh/g at 1.0 A/g) but also achieves a remarkable cyclability (capacity retention: 96.6% after 3000 cycles at 1.0 A/g). Those can be attributed to its intrinsic characteristics: (a) 67% of the disordered structure, (b) 0.38 nm of interplanar distance, (c) a great proportion of sp2-type carbon, (d) abundant microporosity, (e) 16.1% of nitrogen doping, and (f) existence of sodiophilic Zn species, synergistically enhancing the electrochemical performances. Accordingly, the findings observed here support the N,Z-MPC to be a potential anode material enabling exceptional Na+-storage abilities.
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Affiliation(s)
- Wan-Ling Liao
- Battery Research Center of Green Energy, Ming Chi University of Technology, 84 Gungjuan Rd., New Taipei City 24301, Taiwan
| | - Mohamed M Abdelaal
- Battery Research Center of Green Energy, Ming Chi University of Technology, 84 Gungjuan Rd., New Taipei City 24301, Taiwan
- Tabbin Institute for Metallurgical Studies (TIMS), Tabbin, Helwan 109, Cairo 11421, Egypt
| | - Rene-Mary Amirtha
- Battery Research Center of Green Energy, Ming Chi University of Technology, 84 Gungjuan Rd., New Taipei City 24301, Taiwan
| | - Chia-Chen Fang
- Material and Chemical Research Laboratories, Industrial Technology Research Institute, 195, Sec. 4, Chung Hsing Rd., Hsinchu 31040, Taiwan
| | - Chun-Chen Yang
- Battery Research Center of Green Energy, Ming Chi University of Technology, 84 Gungjuan Rd., New Taipei City 24301, Taiwan
- Department of Chemical Engineering, Ming Chi University of Technology, 84 Gungjuan Rd., New Taipei City 24301, Taiwan
- Department of Chemical and Materials Engineering, Chang Gung University, 259 Wenhua 1st Rd., Taoyuan 33302, Taiwan
| | - Tai-Feng Hung
- Battery Research Center of Green Energy, Ming Chi University of Technology, 84 Gungjuan Rd., New Taipei City 24301, Taiwan
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Lai YC, Yang S, Feng HY, Lee YC, Li ZH, Wu SH, Lin YS, Hsieh HY, Chu CJ, Chen WC, Huang YY, Kuo Y, Yang CC. Surface plasmon coupling effects on the photon color conversion behaviors of colloidal quantum dots in a GaN nanoscale hole with a nearby quantum-well structure. Opt Express 2023; 31:16010-16024. [PMID: 37157689 DOI: 10.1364/oe.486434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
To improve color conversion performance for color display application, we study the near-field-induced nanoscale-cavity effects on the emission efficiency and Förster resonance energy transfer (FRET) under the condition of surface plasmon (SP) coupling by inserting colloidal quantum dots (QDs) and synthesized Ag nanoparticles (NPs) into surface nano-holes fabricated on a GaN template and an InGaN/GaN quantum-well (QW) template. In the QW template, the inserted Ag NPs are close to either QWs or QDs for producing three-body SP coupling to enhance color conversion. Time-resolved and continuous-wave photoluminescence (PL) behaviors of the QW- and QD-emitting lights are investigated. The comparison between the nano-hole samples and the reference samples of surface QD/Ag NP shows that the nanoscale-cavity effect of the nano-hole leads to the enhancements of QD emission, FRET between QDs, and FRET from QW into QD. The SP coupling induced by the inserted Ag NPs can enhance the QD emission and FRET from QW into QD. Its result is further enhanced through the nanoscale-cavity effect. The relative continuous-wave PL intensities among different color components also show the similar behaviors. By introducing SP coupling to a color conversion device with the FRET process in a nanoscale cavity structure, we can significantly improve the color conversion efficiency. Simulation results confirm the basic observations in experiment.
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Hsia TN, Lu HC, Hsueh YC, Rajesh Kumar S, Yen CS, Yang CC, Lue SJ. Corrigendum to "Superdry poly(vinylidene fluoride-co-hexafluoropropylene) coating on a lithium anode as a protective layer and separator for a high-performance lithium-oxygen battery" [J. Colloid Interface Sci. 626 (2022) 524-534]. J Colloid Interface Sci 2023; 645:985. [PMID: 37003867 DOI: 10.1016/j.jcis.2023.03.147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
Affiliation(s)
- Ting-Nan Hsia
- Department of Chemical and Materials Engineering, Chang Gung University, Taoyuan City 333, Taiwan
| | - Hsin-Chun Lu
- Department of Chemical and Materials Engineering, Chang Gung University, Taoyuan City 333, Taiwan; Department of Orthopedic Surgery, Chang Gung Memorial Hospital, Keelung City 204, Taiwan
| | - Yu-Chih Hsueh
- Department of Chemical and Materials Engineering, Chang Gung University, Taoyuan City 333, Taiwan
| | - Selvaraj Rajesh Kumar
- Department of Chemical and Materials Engineering, Chang Gung University, Taoyuan City 333, Taiwan
| | - Chien-Sheng Yen
- Department of Chemical and Materials Engineering, Chang Gung University, Taoyuan City 333, Taiwan
| | - Chun-Chen Yang
- Department of Chemical Engineering and Battery Research Center of Green Energy, Ming Chi University of Technology, New Taipei City 243, Taiwan
| | - Shingjiang Jessie Lue
- Department of Chemical and Materials Engineering, Chang Gung University, Taoyuan City 333, Taiwan; Department of Safety, Health and Environment Engineering, Ming Chi University of Technology, New Taipei City 243, Taiwan; Department of Orthopedics, Chang Gung Memorial Hospital, Linkou, Taoyuan City 333, Taiwan.
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Rath PC, Liu MS, Lo ST, Dhaka RS, Bresser D, Yang CC, Lee SW, Chang JK. Suppression of Dehydrofluorination Reactions of a Li 0.33La 0.557TiO 3-Nanofiber-Dispersed Poly(vinylidene fluoride-co-hexafluoropropylene) Electrolyte for Quasi-Solid-State Lithium-Metal Batteries by a Fluorine-Rich Succinonitrile Interlayer. ACS Appl Mater Interfaces 2023; 15:15429-15438. [PMID: 36920173 DOI: 10.1021/acsami.2c22268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Solid-state lithium-metal batteries have great potential to simultaneously achieve high safety and high energy density for energy storage. However, the low ionic conductivity of the solid electrolyte and large electrode/electrolyte interfacial impedance are bottlenecks. A composite solid electrolyte (CSE) that integrates electrospun Li0.33La0.557TiO3 (LLTO) nanofibers, poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP), and lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) is fabricated in this work. The effects of the LLTO filler fraction and morphology (spherical vs fibrous) on CSE conductivity are examined. Additionally, a fluorine-rich interlayer based on succinonitrile, fluoroethylene carbonate, and LiTFSI, denoted as succinonitrile interlayer (SNI), is developed to reduce the large interfacial impedance. The use of SNI rather than a conventional ester-based interlayer (EBI) effectively decreases the Li//CSE interfacial resistance and suppresses unfavorable interfacial side reactions. The LiF- and CFx-rich solid electrolyte interphase (SEI), derived from SNI, on the Li metal electrode, mitigates the accumulation of dead Li and excessive SEI. Importantly, dehydrofluorination reactions of PVDF-HFP are significantly reduced by the introduction of SNI. A symmetric Li//CSE//Li cell with SNI exhibits a much longer cycle life than that of an EBI counterpart. A Li//CSE@SNI//LiFePO4 cell shows specific capacities of 150 and 112 mAh g-1 at 0.1 and 2 C (based on LiFePO4), respectively. After 100 charge-discharge cycles, 98% of the initial capacity is retained.
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Affiliation(s)
- Purna Chandra Rath
- Department of Materials Science and Engineering, National Yang-Ming Chiao Tung University, 1001 University Road, Hsinchu 30010, Taiwan
| | - Ming-Song Liu
- Institute of Materials Science and Engineering, National Central University, 300 Jhong-Da Road, Taoyuan 32001, Taiwan
| | - Shih-Ting Lo
- Institute of Materials Science and Engineering, National Central University, 300 Jhong-Da Road, Taoyuan 32001, Taiwan
| | - Rajendra S Dhaka
- Department of Physics, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Dominic Bresser
- Helmholtz Institute Ulm (HIU), 89081 Ulm, Germany
- Karlsruhe Institute of Technology (KIT), 76021 Karlsruhe, Germany
| | - Chun-Chen Yang
- Battery Research Center of Green Energy, Ming Chi University of Technology, New Taipei City 243, Taiwan
| | - Sheng-Wei Lee
- Institute of Materials Science and Engineering, National Central University, 300 Jhong-Da Road, Taoyuan 32001, Taiwan
| | - Jeng-Kuei Chang
- Department of Materials Science and Engineering, National Yang-Ming Chiao Tung University, 1001 University Road, Hsinchu 30010, Taiwan
- Department of Chemical Engineering, Chung Yuan Christian University, 200 Chung Pei Road, Taoyuan 32023, Taiwan
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Chen CH, Kuo SY, Feng HY, Li ZH, Yang S, Wu SH, Hsieh HY, Lin YS, Lee YC, Chen WC, Wu PH, Chen JC, Huang YY, Lu YJ, Kuo Y, Lin CF, Yang CC. Photon color conversion enhancement of colloidal quantum dots inserted into a subsurface laterally-extended GaN nano-porous structure in an InGaN/GaN quantum-well template. Opt Express 2023; 31:6327-6341. [PMID: 36823892 DOI: 10.1364/oe.478250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Accepted: 01/20/2023] [Indexed: 06/18/2023]
Abstract
To improve the color conversion performance, we study the nanoscale-cavity effects on the emission efficiency of a colloidal quantum dot (QD) and the Förster resonance energy transfer (FRET) from quantum well (QW) into QD in a GaN porous structure (PS). For this study, we insert green-emitting QD (GQD) and red-emitting QD (RQD) into the fabricated PSs in a GaN template and a blue-emitting QW template, and investigate the behaviors of the photoluminescence (PL) decay times and the intensity ratios of blue, green, and red lights. In the PS samples fabricated on the GaN template, we observe the efficiency enhancements of QD emission and the FRET from GQD into RQD, when compared with the samples of surface QDs, which is attributed to the nanoscale-cavity effect. In the PS samples fabricated on the QW template, the FRET from QW into QD is also enhanced. The enhanced FRET and QD emission efficiencies in a PS result in an improved color conversion performance. Because of the anisotropic PS in the sample surface plane, the polarization dependencies of QD emission and FRET are observed.
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Nigatu TA, Bezabh HK, Jiang SK, Taklu BW, Nikodimos Y, Yang SC, Wu SH, Su WN, Yang CC, Hwang BJ. An Anode-Free Aqueous Hybrid Batteries Enabled by In-situ Cu/Sn/Zn Alloy Formation on Pure Cu Substrate. Electrochim Acta 2023. [DOI: 10.1016/j.electacta.2023.141883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Hsu LF, Venkatesh K, Karuppiah C, Ramaraj SK, Yang CC. Incorporation of ZIF-67 derived Co-N/C core-shell nanoparticles on functionalized MWCNT as a highly efficient electrocatalyst for nonenzymatic H2O2 sensor. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Winnick AA, Chen CC, Chang TP, Kuo YH, Wang CF, Huang CH, Yang CC. Automated nystagmus detection: Accuracy of slow-phase and quick-phase algorithms to determine the presence of nystagmus. J Neurol Sci 2022; 442:120392. [PMID: 36058057 DOI: 10.1016/j.jns.2022.120392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 08/21/2022] [Accepted: 08/23/2022] [Indexed: 10/31/2022]
Abstract
PURPOSE To verify the accuracy of automated nystagmus detection algorithms. METHOD Video-oculography (VOG) plots were analyzed from consecutive patients with dizziness presenting to a neurology clinic. Data were recorded for 30 s in upright position with fixation block. For automated nystagmus detection, slow-phase algorithm parameters included mean and median slow-phase velocity (SPV), and slow-phase duration ratio. Quick-phase algorithm parameters included saccadic difference and saccadic ratio. For verification, two independent blinded assessors reviewed VOG traces and videos and coded presence or absence of nystagmus. Assessor consensus was used as reference standard. Accuracy of slow-phase and quick-phase algorithm parameters were compared, and ROC analysis was performed. RESULTS Among 524 analyzed VOG traces, 99 were verified as nystagmus present and 425 were verified as nystagmus absent. Prevalence of nystagmus in the sample population was 18.9%. In ROC analysis, areas under the curve of individual algorithm parameters were 0.791-0.896. With optimal thresholds for determining presence or absence of nystagmus, algorithm sensitivity (70.7-87.9%), specificity (71.8-84.0%), and negative predictive value (91.7-96.4%) were ideal, but positive predictive value (38.8-53.4%) was not ideal. Combining algorithm parameters using logistic regression models mildly improved detection accuracy. CONCLUSION Both slow-phase and fast-phase algorithms were accurate for detecting nystagmus. Due to low positive predictive value, the utility of independent automated nystagmus detection systems is limited in clinical settings with low prevalence of nystagmus. Combining parameters using logistic regression models appears to improve detection accuracy, indicating that machine learning may potentially optimize the accuracy of future automated nystagmus detection systems.
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Affiliation(s)
- Ariel A Winnick
- Soroka University Hospital and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel; Department of Neurology, University of South Alabama, Mobile, AL, USA
| | - Chih-Chung Chen
- Dizziness and Balance Disorder Center, Taipei Medical University-Shuang Ho Hospital, New Taipei City, Taiwan; Taipei Neuroscience Institute, Taipei Medical University, New Taipei City, Taiwan; Department of Neurology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Tzu-Pu Chang
- Department of Neurology/Neuro-medical Scientific Center, Taichung Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Taichung, Taiwan; Department of Neurology, School of Medicine, Tzu Chi University, Hualien, Taiwan.
| | - Yu-Hung Kuo
- Department of Research, Taichung Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Taichung, Taiwan
| | - Ching-Fu Wang
- Department of Biomedical Engineering, National Yang Ming Chiao Tung University, Taipei 11221, Taiwan; Biomedical Engineering Research and Development Center, National Yang Ming Chiao Tung University, Taipei 11221, Taiwan; Neurobit Technologies Co., Ltd., Taipei, Taiwan
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Shih JY, Lin GY, Li YJJ, Hung TF, Jose R, Karuppiah C, Yang CC. Operando investigation on the fast two-phase transition kinetics of LiFePO4/C composite cathodes with carbon additives for lithium-ion batteries. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.140356] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Amirtha RM, Hsu HH, Abdelaal MM, Anbunathan A, Mohamed SG, Yang CC, Hung TF. Constructing a Carbon-Encapsulated Carbon Composite Material with Hierarchically Porous Architectures for Efficient Capacitive Storage in Organic Supercapacitors. Int J Mol Sci 2022; 23:ijms23126774. [PMID: 35743213 PMCID: PMC9223422 DOI: 10.3390/ijms23126774] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Revised: 06/07/2022] [Accepted: 06/15/2022] [Indexed: 01/27/2023] Open
Abstract
Hierarchical porous activated carbon (HPAC) materials with fascinating porous features are favored for their function as active materials for supercapacitors. However, achieving high mass-loading of the HPAC electrodes remains challenging. Inspired by the concepts of carbon/carbon (C/C) composites and hydrogels, a novel hydrogel-derived HPAC (H-HPAC) encapsulated H-HPAC (H@H) composite material was successfully synthesized in this study. In comparison with the original H-HPAC, it is noticed that the specific surface area and pore parameters of the resulting H@H are observably decreased, while the proportions of nitrogen species are dramatically enhanced. The free-standing and flexible H@H electrodes with a mass-loading of 7.5 mg/cm2 are further prepared for electrochemical measurements. The experiments revealed remarkable reversible capacitance (118.6 F/g at 1 mA/cm2), rate capability (73.9 F/g at 10 mA/cm2), and cycling stability (76.6% of retention after 30,000 cycles at 5 mA) are delivered by the coin-type symmetric cells. The cycling stability is even better than that of the H-HPAC electrode. Consequently, the findings of the present study suggest that the nature of the HPAC surface is a significant factor affecting the corresponding capacitive performances.
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Affiliation(s)
- Rene Mary Amirtha
- Battery Research Center of Green Energy, Ming Chi University of Technology, 84 Gungjuan Rd., Taishan Dist., New Taipei City 24301, Taiwan; (R.M.A.); (H.-H.H.); (M.M.A.); (A.A.); (C.-C.Y.)
| | - Hao-Huan Hsu
- Battery Research Center of Green Energy, Ming Chi University of Technology, 84 Gungjuan Rd., Taishan Dist., New Taipei City 24301, Taiwan; (R.M.A.); (H.-H.H.); (M.M.A.); (A.A.); (C.-C.Y.)
| | - Mohamed M. Abdelaal
- Battery Research Center of Green Energy, Ming Chi University of Technology, 84 Gungjuan Rd., Taishan Dist., New Taipei City 24301, Taiwan; (R.M.A.); (H.-H.H.); (M.M.A.); (A.A.); (C.-C.Y.)
- Tabbin Institute for Metallurgical Studies (TIMS), Tabbin, Helwan 109, Cairo 11421, Egypt;
| | - Ammaiyappan Anbunathan
- Battery Research Center of Green Energy, Ming Chi University of Technology, 84 Gungjuan Rd., Taishan Dist., New Taipei City 24301, Taiwan; (R.M.A.); (H.-H.H.); (M.M.A.); (A.A.); (C.-C.Y.)
| | - Saad G. Mohamed
- Tabbin Institute for Metallurgical Studies (TIMS), Tabbin, Helwan 109, Cairo 11421, Egypt;
| | - Chun-Chen Yang
- Battery Research Center of Green Energy, Ming Chi University of Technology, 84 Gungjuan Rd., Taishan Dist., New Taipei City 24301, Taiwan; (R.M.A.); (H.-H.H.); (M.M.A.); (A.A.); (C.-C.Y.)
- Department of Chemical Engineering, Ming Chi University of Technology, 84 Gungjuan Rd., Taishan Dist., New Taipei City 24301, Taiwan
- Department of Chemical and Materials Engineering, Chang Gung University, 259 Wenhua 1st Rd., Guishan Dist., Taoyuan 33302, Taiwan
| | - Tai-Feng Hung
- Battery Research Center of Green Energy, Ming Chi University of Technology, 84 Gungjuan Rd., Taishan Dist., New Taipei City 24301, Taiwan; (R.M.A.); (H.-H.H.); (M.M.A.); (A.A.); (C.-C.Y.)
- Correspondence: ; Tel.: +886-2-2908-9899 (ext. 4957)
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Walle KZ, Wu YS, Wu SH, Chang JK, Jose R, Yang CC. Lithium Nafion-Modified Li 6.05Ga 0.25La 3Zr 2O 11.8F 0.2 Trilayer Hybrid Solid Electrolyte for High-Voltage Cathodes in All-Solid-State Lithium-Metal Batteries. ACS Appl Mater Interfaces 2022; 14:15259-15274. [PMID: 35344344 DOI: 10.1021/acsami.2c00753] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
All-solid-state batteries containing ceramic-polymer solid electrolytes are possible alternatives to lithium-metal batteries containing liquid electrolytes in terms of their safety, energy storage, and stability at elevated temperatures. In this study we prepared a garnet-type Li6.05Ga0.25La3Zr2O11.8F0.2 (LGLZOF) solid electrolyte modified with lithium Nafion (LiNf) and incorporated it into poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) matrixes. We used a solution-casting method to obtain bilayer (Bi-HSE) and trilayer (Tri-HSE) hybrid solid electrolytes. A layer of functionalized multiwalled carbon nanotubes (f-MWCNTs) coated with LiNf (LiNf@f-MWCNT) in the Tri-HSE led to good compatibility with the polymer slurry and adhered well to the Li anode, thereby improving the interfacial contact at the electrode-solid electrolyte interface and suppressing dendrite growth. The Tri-HSE membrane displayed high ionic conductivity (5.6 × 10-4 S cm-1 at 30 °C), a superior Li+ transference number (0.87), and a wide electrochemical window (0-5.0 V vs Li/Li+). In addition, Li symmetrical cells incorporating this hybrid electrolyte possessed excellent interfacial stability over 600 h at 0.1 mA cm-2 and a high critical current density (1.5 mA cm-2). Solid-state lithium batteries having the structure LiNf@LiNi0.8Co0.1Mn0.1O2/Tri-HSE/Li delivered excellent room-temperature stable cycling performance at 0.5C, with a capacity retention of 85.1% after 450 cycles.
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Affiliation(s)
- Kumlachew Zelalem Walle
- Battery Research Center of Green Energy, Ming Chi University of Technology, New Taipei City 24301, Taiwan, R.O.C
- Department of Chemical Engineering, Ming Chi University of Technology, New Taipei City 24301, Taiwan, R.O.C
| | - Yi-Shiuan Wu
- Battery Research Center of Green Energy, Ming Chi University of Technology, New Taipei City 24301, Taiwan, R.O.C
| | - She-Huang Wu
- Graduate Institute of Science and Technology, National Taiwan University of Science and Technology, 43, Sec. 4, Keelung Road, Taipei 106, Taiwan, R.O.C
| | - Jeng-Kuei Chang
- Department of Materials Science and Engineering, National Chiao Tung University, Hsinchu, 30010, Taiwan, R.O.C
| | - Rajan Jose
- Nanostructured Renewable Energy Materials Laboratory, Faculty of Industrial Sciences and Technology, University Malaysia Pahang, 26300 Kuantan, Malaysia
| | - Chun-Chen Yang
- Battery Research Center of Green Energy, Ming Chi University of Technology, New Taipei City 24301, Taiwan, R.O.C
- Department of Chemical Engineering, Ming Chi University of Technology, New Taipei City 24301, Taiwan, R.O.C
- Department of Chemical and Materials Engineering, and Green Technology Research Center, Chang Gung University, Taoyuan City 333, Taiwan, R.O.C
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Venkatesh K, Muthukutty B, Chen SM, Karuppasamy P, Haidyrah AS, Karuppiah C, Yang CC, Ramaraj SK. Spinel CoMn2O4 nano-/micro-spheres embedded RGO nanosheets modified disposable electrode for the highly sensitive electrochemical detection of metol. J IND ENG CHEM 2022. [DOI: 10.1016/j.jiec.2021.11.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Lu S, Jiang X, Wang Y, Huang K, Gao N, Cai D, Zhou Y, Yang CC, Kang J, Zhang R. Enhancing deep-UV emission at 234 nm by introducing a truncated pyramid AlN/GaN nanostructure with fine-tuned multiple facets. Nanoscale 2022; 14:653-662. [PMID: 35018953 DOI: 10.1039/d1nr06188g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The external quantum efficiency of a high-Al content (>0.6) AlGaN deep-ultraviolet (DUV) light-emitting diode is typically below 1% in the sub-250 nm wavelength range. One of the main reasons for this low efficiency is the fundamental properties of high-Al content AlGaN comprising the transverse-magnetic (TM)-dominant emission and low light extraction due to the total internal reflection (TIR). This work demonstrates a truncated pyramid nanostructure with fine-tuned multiple facets in an (AlN)8/(GaN)2 digital alloy to achieve highly efficient DUV emission at 234 nm. By applying nanoimprint lithography, dry and wet etching, a hexagonal truncated pyramid nanohole structure is fabricated featuring multiple crystal facets of (0001), (10-13), and (20-21) planes. These fine-tuned multiple facets act as reflecting mirrors that can effectively modulate the light propagation and extraction patterns to overcome the TIR via multiple reflections and enhanced scattering. Consequently, significant light extraction enhancements of 5.6 times and 1.1 times for TM and transverse-electric emissions are achieved in the truncated pyramid nanohole structure, respectively. The total luminous intensity of this unique nanostructure is greatly increased by 191% compared to that of a conventional planar structure. The truncated pyramid AlN/GaN nanostructure with fine-tuned multiple facets used in this work provides a promising approach for realizing highly efficient sub-250 nm DUV light-emitting devices.
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Affiliation(s)
- Shiqiang Lu
- Fujian Key Laboratory of Semiconductor Materials and Applications, CI Center for OSED, Department of Physics, Xiamen University, Xiamen 361005, China.
| | - Xinjun Jiang
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Yaozeng Wang
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Kai Huang
- Fujian Key Laboratory of Semiconductor Materials and Applications, CI Center for OSED, Department of Physics, Xiamen University, Xiamen 361005, China.
| | - Na Gao
- Fujian Key Laboratory of Semiconductor Materials and Applications, CI Center for OSED, Department of Physics, Xiamen University, Xiamen 361005, China.
| | - Duanjun Cai
- Fujian Key Laboratory of Semiconductor Materials and Applications, CI Center for OSED, Department of Physics, Xiamen University, Xiamen 361005, China.
| | - Yinghui Zhou
- Fujian Key Laboratory of Semiconductor Materials and Applications, CI Center for OSED, Department of Physics, Xiamen University, Xiamen 361005, China.
| | - C C Yang
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Junyong Kang
- Fujian Key Laboratory of Semiconductor Materials and Applications, CI Center for OSED, Department of Physics, Xiamen University, Xiamen 361005, China.
| | - Rong Zhang
- Fujian Key Laboratory of Semiconductor Materials and Applications, CI Center for OSED, Department of Physics, Xiamen University, Xiamen 361005, China.
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22
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Yang CC, Zhang JX, Wei Q, Jiang T. [Role of inducible costimulatory molecules (ICOS) and related cytokines in immune regulation of Echinococcus granulosus infections in mice]. Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2022; 33:575-582. [PMID: 35128887 DOI: 10.16250/j.32.1374.2021034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
OBJECTIVE To investigate the roles of inducible costimulatory molecules (ICOS) and related cytokines in the immune regulation of Echinococcus granulosus infections in mice. METHODS Eighty BALB/c mice (weight 18-22 g) were divided into the control and infection groups, of 40 animals in each group. E. granulosus infection was modeled in mice by intraperitoneal injection of 10 000 protoscoleces per mouse. Serum levels of aspartate aminotransferase (AST), alanine aminotransferase (ALT) and alkaline phosphatase (ALP) and peripheral interleukin-4 (IL-4) and IL-10 levels were measured 2, 8, 30, 60, 180 days post-infection. Mouse liver specimens were excised for hematoxylin-eosin (HE) staining and immunostaining, and ICOS expression was quantified in mouse liver specimens using quantitative real-time PCR (qPCR) assay. RESULTS There were no significant differences in serum ALT (F = 12.082, P < 0.05), AST (F = 6.347, P < 0.05) or ALP levels (F = 52.186, P < 0.05) in mice 2, 8, 30, 60 and 180 days post-infection with E. granulosus. The serum ALT levels were significantly higher in the infection group than in the control group 2 [(61.72 ± 9.89) vs. (50.65 ± 4.67)U/L, P < 0.05] and 30 days post-infection [(80.61 ± 23.71)vs.(67.75 ± 9.79)U/L, P < 0.05], and the serum ALT levels were significantly higher in the infection group than in the control group 2 [(181.06 ± 60.61) vs.(115.58 ± 17.66)U/L, P < 0.05] and 180 days post-infection [(137.84 ± 29.01) vs. (108.05 ± 10.33) U/L, P < 0.05], while greater serum ALP levels were measured in the infection group than in the control group 2 [(162.90 ± 21.04)vs.(64.54 ± 5.99)U/L, P < 0.05], 8[(176.36 ± 24.56) vs. (62.70 ± 9.21)U/L, P < 0.05] and 30 days post-infection [(138.86 ± 13.59) vs. (58.60 ± 5.28) U/L, P < 0.05]. A few inflammatory cells were seen in mouse liver in the infection group 30 days post-infection, and no apparent changes were found in the mouse hepatic structure 60 days post-infection. On day 180 post-infection, a large number of epithelium-like cells presented fibrotic growth in mouse liver in the cyst-infiltrating regions, with cuticula formation seen, and plenty of red cells were present in lesions and hepatocyte space. Positive ICOS expression was detected in mouse liver in the infection group, with ICOS-positive cells predominantly seen in the cytoplasm of the hepatocyte, and the ICOS expression increased over time. The relative ICOS mRNA expression was 2.732 ± 0.094 on day 180 post-infection, which was significantly greater than that on day 2 postinfection (0.746 ± 0.049). There were no significant differences in serum IL-4 or IL-10 levels at different time points after E. granulosus infections, while the serum IL-4 and IL-10 levels peaked in the infection group 180 days and 60 days post-infection, respectively. Higher serum IL-4 levels were measured in the infection group than in the control group 8 [(22.50 ± 3.24) vs. (5.82 ± 0.49) pg/mL, P < 0.05], 30 [(15.49 ± 4.73) vs. (5.10 ± 1.38) pg/mL, P < 0.05], 60 [(36.93 ± 6.14) vs. (4.13 ± 1.19) pg/mL, P < 0.05] and 180 days post-infection [(198.35 ± 0.70) vs. (4.19 ± 0.98) pg/mL, P < 0.05], and higher IL-10 levels were measured in the infection group than in the control group 2 [(4.84 ± 1.91) vs. (2.11 ± 1.03) pg/mL, P < 0.05], 8 [(44.72 ± 14.63) vs. (3.16 ± 0.60) pg/mL, P < 0.05], 30 [(25.47 ± 8.00) vs. (3.83 ± 1.87) pg/mL, P < 0.05], 60 [(187.16 ± 60.44) vs. (3.69 ± 1.05) pg/mL, P < 0.05] and 180 days post-infection [(85.40 ± 7.15) vs. (3.25 ± 0.93) pg/mL, P < 0.05]. CONCLUSIONS High ICOS expression is present in the liver of mice with E. granulosus infections. The positive ICOS expression and immune activation levels increase with the time of E. granulosus infections, leading to aggravation of hepatocyte injury caused by inflammation.
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Affiliation(s)
- C C Yang
- Department of Basic Medicine, School of Healthy and Nursing, Wuxi Taihu University, Wuxi, Jiangsu 214064, China
| | - J X Zhang
- Changji Vocational and Technical College, China
| | - Q Wei
- Center for Laboratory Animals, Xinjiang Medical University, Urumqi, Xinjiang 830011, China
| | - T Jiang
- Center for Laboratory Animals, Xinjiang Medical University, Urumqi, Xinjiang 830011, China
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23
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Chen JW, Yang S, Li CH, Huang YY, Chen CH, Yang CC. Mesh size control in forming an Ag/AgO nano-network structure for transparent conducting application. Nanotechnology 2022; 33:135201. [PMID: 34905734 DOI: 10.1088/1361-6528/ac4305] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2021] [Accepted: 12/14/2021] [Indexed: 06/14/2023]
Abstract
The variation behaviors of the morphology, transmission, and sheet resistance of the surface Ag/AgO nano-network (NNW) structures fabricated under different illumination conditions and with different Ag deposition thicknesses and thermal annealing temperatures in forming initial Ag nanoparticles (NPs) are studied. Generally, an NNW structure with a smaller mesh size or a denser branch distribution has a lower transmission and a lower sheet resistance level. Under the fabrication condition of a broader illumination spectrum, a lower thermal annealing temperature, or a thicker Ag deposition, we can obtain an NNW structure of a smaller mesh size. The mesh size of an NNW structure is basically controlled by the seed density of Brownian tree (BT) at the beginning of light illumination. A BT seed can be formed through a stronger local localized surface plasmon resonance for accelerating Ag oxidation in a certain region. Once an Ag/AgO BT seed is formed, the surrounding Ag NPs are reorganized to form the branches of a BT. Multiple BTs are connected to form a large-area NNW structure, which can serve as a transparent conductor. Under the fabrication conditions of a broader illumination spectrum, 3 nm Ag deposition, and 100 °C thermal annealing, we can implement an NNW structure to achieve ∼1.15μm in mesh size, ∼90 Ω sq-1in sheet resistance, and 93%-77% in transmittance within the wavelength range between 370 and 700 nm.
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Affiliation(s)
- Jia-Wei Chen
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei 10617, Taiwan
| | - Shaobo Yang
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei 10617, Taiwan
| | - Chia-Hao Li
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei 10617, Taiwan
| | - Yang-Yi Huang
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei 10617, Taiwan
| | - Chen-Hua Chen
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei 10617, Taiwan
| | - C C Yang
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei 10617, Taiwan
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24
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Ling J, Karuppiah C, Das S, Singh VK, Misnon II, Ab Rahim MH, Peng S, Yang CC, Jose R. Quasi-anisotropic benefits in electrospun nickel–cobalt–manganese oxide nano-octahedron as anode for lithium-ion batteries. NEW J CHEM 2022. [DOI: 10.1039/d2nj01462a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A polyhedral Ni–Co–Mn–O nano-octahedron anode for lithium-ion batteries was synthesized, which demonstrated enhanced lithium storage properties as compared to the nanofiber counterpart.
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Affiliation(s)
- Jinkiong Ling
- Center of Advanced Intelligent Materials, Universiti Malaysia Pahang, 26300 Kuantan, Pahang Darul Makmur, Malaysia
- Faculty of Industrial Sciences and Technology, Universiti Malaysia Pahang, 26300 Kuantan, Pahang Darul Makmur, Malaysia
| | - Chelladurai Karuppiah
- Battery Research Centre of Green Energy (BRCGE), Ming Chi University of Technology, New Taipei City, 24301, Taiwan, Republic of China
| | - Santanu Das
- Department of Ceramic Engineering, Indian Institute of Technology (Banaras Hindu University), Varanasi, 221005, Uttar Pradesh, India
| | - Vivek Kumar Singh
- Department of Ceramic Engineering, Indian Institute of Technology (Banaras Hindu University), Varanasi, 221005, Uttar Pradesh, India
| | - Izan Izwan Misnon
- Center of Advanced Intelligent Materials, Universiti Malaysia Pahang, 26300 Kuantan, Pahang Darul Makmur, Malaysia
- Faculty of Industrial Sciences and Technology, Universiti Malaysia Pahang, 26300 Kuantan, Pahang Darul Makmur, Malaysia
| | - Mohd Hasbi Ab Rahim
- Center of Advanced Intelligent Materials, Universiti Malaysia Pahang, 26300 Kuantan, Pahang Darul Makmur, Malaysia
- Faculty of Industrial Sciences and Technology, Universiti Malaysia Pahang, 26300 Kuantan, Pahang Darul Makmur, Malaysia
| | - Shengjie Peng
- College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P. R. China
| | - Chun-Chen Yang
- Battery Research Centre of Green Energy (BRCGE), Ming Chi University of Technology, New Taipei City, 24301, Taiwan, Republic of China
- Department of Chemical Engineering, Ming Chi University of Technology, New Taipei City, 24301, Taiwan, Republic of China
- Department of Chemical and Materials Engineering, Chang Gung University, Kwei-shan, Taoyuan 333, Taiwan, Republic of China
| | - Rajan Jose
- Center of Advanced Intelligent Materials, Universiti Malaysia Pahang, 26300 Kuantan, Pahang Darul Makmur, Malaysia
- Faculty of Industrial Sciences and Technology, Universiti Malaysia Pahang, 26300 Kuantan, Pahang Darul Makmur, Malaysia
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25
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Kuan CY, Lin YY, Yang IH, Chen CY, Chi CY, Li CH, Chen ZY, Lin LZ, Yang CC, Lin FH. The Synthesis of Europium-Doped Calcium Carbonate by an Eco-Method as Free Radical Generator Under Low-Intensity Ultrasonic Irradiation for Body Sculpture. Front Bioeng Biotechnol 2021; 9:765630. [PMID: 34869278 PMCID: PMC8639516 DOI: 10.3389/fbioe.2021.765630] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Accepted: 10/20/2021] [Indexed: 11/17/2022] Open
Abstract
Body sculpture is a common method to remove excessive fat. The diet and exercise are the first suggestion to keep body shape; however, those are difficult to keep adherence. Ultrasound has been developed for fat ablation; however, it could only serve as the side treatment along with liposuction. In the study, a sonosensitizer of europium-doped calcium carbonate (CaCO3: Eu) would be synthesized by an eco-method and combined with low-intensity ultrasound for lipolysis. The crystal structure of CaCO3: Eu was identified by x-ray diffractometer (XRD). The morphology of CaCO3: Eu was analyzed by scanning electron microscope (SEM). The chemical composition of CaCO3: Eu was evaluated by energy-dispersed spectrophotometer (EDS) and inductively coupled plasma mass spectrometer (ICP-MS). The electronic diffraction pattern was to further check crystal structure of the synthesized individual grain by transmission electron microscope (TEM). The particle size was determined by Zeta-sizer. Water-soluble tetrazolium salt (WST-1) were used to evaluate the cell viability. Chloromethyl-2′,7′-dichlorofluorescein diacetate (CM-H2DCFDA) and live/dead stain were used to evaluate feasibility in vitro. SD-rat was used to evaluate the safety and efficacy in vivo. The results showed that CaCO3: Eu had good biocompatibility and could produce reactive oxygen species (ROS) after treated with low-intensity ultrasound. After 4-weeks, the CaCO3: Eu exposed to ultrasound irradiation on SD rats could significantly decrease body weight, waistline, and subcutaneous adipose tissue. We believe that ROS from sonoluminescence, CO2-bomb and locally increasing Ca2+ level would be three major mechanisms to remove away adipo-tissue and inhibit adipogenesis. We could say that the combination of the CaCO3: Eu and low-intensity ultrasound would be a non-invasive treatment for the body sculpture.
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Affiliation(s)
- Che-Yung Kuan
- Institute of Biomedical Engineering, College of Medicine and College of Engineering, National Taiwan University, Taipei, Taiwan.,Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Miaoli County, Taiwan
| | - Yu-Ying Lin
- Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Miaoli County, Taiwan.,Ph.D. Program in Tissue Engineering and Regenerative Medicine, National Chung Hsing University, Taichung, Taiwan
| | - I-Hsuan Yang
- Institute of Biomedical Engineering, College of Medicine and College of Engineering, National Taiwan University, Taipei, Taiwan.,Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Miaoli County, Taiwan
| | - Ching-Yun Chen
- Department of Biomedical Sciences and Engineering, National Central University, Taoyuan, Taiwan
| | - Chih-Ying Chi
- Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Miaoli County, Taiwan.,Ph.D. Program in Tissue Engineering and Regenerative Medicine, National Chung Hsing University, Taichung, Taiwan.,Biomaterials Translational Research Center, China Medical University Hospital, Taichung, Taiwan
| | - Chi-Han Li
- Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Miaoli County, Taiwan.,Ph.D. Program in Tissue Engineering and Regenerative Medicine, National Chung Hsing University, Taichung, Taiwan
| | - Zhi-Yu Chen
- Institute of Biomedical Engineering, College of Medicine and College of Engineering, National Taiwan University, Taipei, Taiwan.,Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Miaoli County, Taiwan
| | - Li-Ze Lin
- Department of Materials Science and Engineering, National United University, Miaoli County, Taiwan
| | - Chun-Chen Yang
- Department of Materials Science and Engineering, National Taiwan University, Taipei, Taiwan
| | - Feng-Huei Lin
- Institute of Biomedical Engineering, College of Medicine and College of Engineering, National Taiwan University, Taipei, Taiwan.,Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Miaoli County, Taiwan
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26
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Truong BT, Wu YS, Hung TF, Chien WC, Wu SH, Jose R, Lue SJ, Yang CC. The effect of lithium-excess on Ni-rich LiNi0.6Co0.2Mn0.2O2 cathode materials prepared by a Taylor flow reactor. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.138982] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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27
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Haidyrah AS, Karikalan N, Karthik R, Shim JJ, Yang CC, Karuppiah C. Surface sulfuration of antimony oxide enhances the electrochemical determination of acebutolol in biomedical samples. J Electroanal Chem (Lausanne) 2021. [DOI: 10.1016/j.jelechem.2021.115371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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28
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Abdelaal MM, Hung TC, Mohamed SG, Yang CC, Huang HP, Hung TF. A Comparative Study of the Influence of Nitrogen Content and Structural Characteristics of NiS/Nitrogen-Doped Carbon Nanocomposites on Capacitive Performances in Alkaline Medium. Nanomaterials (Basel) 2021; 11:1867. [PMID: 34361250 PMCID: PMC8308313 DOI: 10.3390/nano11071867] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 07/13/2021] [Accepted: 07/19/2021] [Indexed: 12/12/2022]
Abstract
Supercapacitors (SCs) have been regarded as alternative electrochemical energy storage devices; however, optimizing the electrode materials to further enhance their specific energy and retain their rate capability is highly essential. Herein, the influence of nitrogen content and structural characteristics (i.e., porous and non-porous) of the NiS/nitrogen-doped carbon nanocomposites on their electrochemical performances in an alkaline electrolyte is explored. Due to their distinctive surface and the structural features of the porous carbon (A-PVP-NC), the as-synthesized NiS/A-PVP-NC nanocomposites not only reveal a high wettability with 6 M KOH electrolyte and less polarization but also exhibit remarkable rate capability (101 C/g at 1 A/g and 74 C/g at 10 A/g). Although non-porous carbon (PI-NC) possesses more nitrogen content than the A-PVP-NC, the specific capacity output from the latter at 10 A/g is 3.7 times higher than that of the NiS/PI-NC. Consequently, our findings suggest that the surface nature and porous architectures that exist in carbon materials would be significant factors affecting the electrochemical behavior of electrode materials compared to nitrogen content.
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Affiliation(s)
- Mohamed M. Abdelaal
- Battery Research Center of Green Energy, Ming Chi University of Technology, 84 Gungjuan Rd., Taishan District, New Taipei City 24301, Taiwan; (M.M.A.); (T.-C.H.); (C.-C.Y.); (H.-P.H.)
- Tabbin Institute for Metallurgical Studies (TIMS), Tabbin, Helwan 109, Cairo 11421, Egypt;
| | - Tzu-Cheng Hung
- Battery Research Center of Green Energy, Ming Chi University of Technology, 84 Gungjuan Rd., Taishan District, New Taipei City 24301, Taiwan; (M.M.A.); (T.-C.H.); (C.-C.Y.); (H.-P.H.)
| | - Saad Gomaa Mohamed
- Tabbin Institute for Metallurgical Studies (TIMS), Tabbin, Helwan 109, Cairo 11421, Egypt;
| | - Chun-Chen Yang
- Battery Research Center of Green Energy, Ming Chi University of Technology, 84 Gungjuan Rd., Taishan District, New Taipei City 24301, Taiwan; (M.M.A.); (T.-C.H.); (C.-C.Y.); (H.-P.H.)
- Department of Chemical Engineering, Ming Chi University of Technology, 84 Gungjuan Rd., Taishan District, New Taipei City 24301, Taiwan
- Department of Chemical and Materials Engineering, Chang Gung University, 259 Wenhua 1st Rd., Guishan District, Taoyuan 33302, Taiwan
| | - Huei-Ping Huang
- Battery Research Center of Green Energy, Ming Chi University of Technology, 84 Gungjuan Rd., Taishan District, New Taipei City 24301, Taiwan; (M.M.A.); (T.-C.H.); (C.-C.Y.); (H.-P.H.)
| | - Tai-Feng Hung
- Battery Research Center of Green Energy, Ming Chi University of Technology, 84 Gungjuan Rd., Taishan District, New Taipei City 24301, Taiwan; (M.M.A.); (T.-C.H.); (C.-C.Y.); (H.-P.H.)
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29
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Palani R, Anitha V, Karuppiah C, Rajalakshmi S, Li YJJ, Hung TF, Yang CC. Imidazolatic-Framework Bimetal Electrocatalysts with a Mixed-Valence Surface Anchored on an rGO Matrix for Oxygen Reduction, Water Splitting, and Dye Degradation. ACS Omega 2021; 6:16029-16042. [PMID: 34179648 PMCID: PMC8223441 DOI: 10.1021/acsomega.1c01870] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Accepted: 06/03/2021] [Indexed: 05/07/2023]
Abstract
This paper presents a simple strategy for manufacturing bifunctional electrocatalysts-graphene nanosheets (GNS) coated with an ultrafine NiCo-MOF as nanocomposites (denoted NiCo-MOF@GNS) having a N-doped defect-rich and abundant cavity structure through one-pool treatment of metal-organic frameworks (MOFs). The precursors included N-doped dodecahedron-like graphene nanosheets (GNS), in which the NiCo-MOF was encompassed within the inner cavities of the GNS (NiCo-MOF@GNS) at the end or middle portion of the tubular furnace with several graphene layers. Volatile imidazolate N x species were trapped by the NiCo-MOF nanosheets during the pyrolysis process, simultaneously inserting N atoms into the carbon matrix to achieve the defect-rich porous nanosheets and the abundantly porous cavity structure. With high durability, the as-prepared nanomaterials displayed simultaneously improved performance in the oxygen reduction reaction (ORR), the oxygen evolution reaction (OER), and photocatalysis. In particular, our material NiCo-MOF@GNS-700 exhibited excellent electrocatalytic activity, including a half-wave potential of 0.83 V (E ORR, 1/2), a low operating voltage of 1.53 V (E OER, 10) at 10 mA cm-2, a potential difference (ΔE) of 1.02 V between E OER, 10 and E ORR, 1/2 in 0.1 M KOH, and a low band gap of 2.61 eV. This remarkable behavior was due to the structure of the defect-rich porous carbon nanosheets and the synergistic impact of the NPs in the NiCo-MOF, the N-doped carbon, and NiCo-N x . Furthermore, the hollow structure enhanced the conductivity and stability. This useful archetypal template allows the construction of effective and stable bifunctional electrocatalysts, with potential for practical viability for energy conversion and storage.
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Affiliation(s)
- Raja Palani
- Battery
Research Center of Green Energy, Ming Chi
University of Technology, New Taipei
City 24301, Taiwan, R.O.C.
| | - Venkatasamy Anitha
- Departmet
of Chemistry, Sri G.V.G Visalakshi College
for Women (Autonomous), Udumalpet 642128, India
| | - Chelladurai Karuppiah
- Battery
Research Center of Green Energy, Ming Chi
University of Technology, New Taipei
City 24301, Taiwan, R.O.C.
| | | | - Ying-Jeng Jame Li
- Battery
Research Center of Green Energy, Ming Chi
University of Technology, New Taipei
City 24301, Taiwan, R.O.C.
| | - Tai-Feng Hung
- Battery
Research Center of Green Energy, Ming Chi
University of Technology, New Taipei
City 24301, Taiwan, R.O.C.
| | - Chun-Chen Yang
- Battery
Research Center of Green Energy, Ming Chi
University of Technology, New Taipei
City 24301, Taiwan, R.O.C.
- Department
of Chemical Engineering, Ming Chi University
of Technology, New Taipei City 24301, Taiwan, R.O.C.
- Department
of Chemical and Materials Engineering, Chang
Gung University, Kwei-shan, Taoyuan 333, Taiwan,
R.O.C.
- . Tel: 886-2-908-9899, ext. 4601. Fax: 886-2-2904-1914
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30
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Venkatesh K, Rajakumaran R, Chen SM, Karuppiah C, Yang CC, Ramaraj SK, Ali MA, Al-Hemaid FMA, El-Shikh MS, Almunqedhi BMA. A novel hybrid construction of MnMoO 4 nanorods anchored graphene nanosheets; an efficient electrocatalyst for the picomolar detection of ecological pollutant ornidazole in water and urine samples. Chemosphere 2021; 273:129665. [PMID: 33508687 DOI: 10.1016/j.chemosphere.2021.129665] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 01/10/2021] [Accepted: 01/14/2021] [Indexed: 06/12/2023]
Abstract
Nitroimidazole compounds are widely used antibiotics to encounter anaerobic bacterial and parasitic infections. The wide usage of antibiotic drugs became an ecological contaminant which in turn into potential monitoring. In this regards, we have designed and developed a new electrochemical sensing probe to monitor an antiprotozoal drug, ornidazole (ODZ), with the aid of a glassy carbon electrode (GCE) integrated with manganese molybdate nanorods (MnMoO4) decorated graphene nanosheets (GNS) hybrid materials that prepared by feasible probe sonochemical method (parameters: 2-4 W, 5 mV amp, 20 kHz). The electrochemical investigations of the developed probe were performed by using rapid scan electrochemical workstations namely cyclic voltammetry (CV) and amperometric (i-t) techniques. The as-prepared MnMoO4/GNS nanocomposite was characterized and its purity of nanocomposite formation was confirmed by various analytical techniques like X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), and Raman spectroscopy. In addition to that, the textural morphology of the MnMoO4/GNS nanocomposite was examined with the aid of field emission scanning electron microscopy (FE-SEM) and high-resolution transmission electron microscopy (HR-TEM). The MnMoO4/GNS nanocomposite rotating disk glassy carbon electrode (RDGCE) plays a crucial role in electrochemical detection of ODZ, which results in excellent anti-interference ability, a lower detection limit of 845 pM, massive linear ranges from 10 to 770 nM, and good sensitivity of about 104.62 μA μM-1 cm-2. From the acquired electrochemical studies, we have developed a disposable electrochemical sensor probe using a low-cost screen-printed carbon electrode (SPCE) with MnMoO4/GNS nanocomposite. The MnMoO4/GNS/SPCE are capably employed in real-time sensing of ODZ in water and urine samples. These electrochemical studies revealed the integral new vision on the electrocatalytic performance of the modified SPCE and also shown excellent amplification results in ultra-trace levels.
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Affiliation(s)
- Krishnan Venkatesh
- PG and Research Department of Chemistry, Thiagarajar College, Madurai, Tamil Nadu, India
| | - Ramachandran Rajakumaran
- Electroanalysis and Bioelectrochemistry Lab, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei, 106, Taiwan, ROC
| | - Shen-Ming Chen
- Electroanalysis and Bioelectrochemistry Lab, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei, 106, Taiwan, ROC.
| | - Chelladurai Karuppiah
- Department of Chemical Engineering, Ming Chi University of Technology, New Taipei City, 24301, Taiwan, ROC
| | - Chun-Chen Yang
- Department of Chemical Engineering, Ming Chi University of Technology, New Taipei City, 24301, Taiwan, ROC
| | - Sayee Kannan Ramaraj
- PG and Research Department of Chemistry, Thiagarajar College, Madurai, Tamil Nadu, India.
| | - Mohammad Ajmal Ali
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Fahad M A Al-Hemaid
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Mohammad Suliman El-Shikh
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - B M A Almunqedhi
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
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Chen CY, Ni CC, Wu RN, Kuo SY, Li CH, Kiang YW, Yang CC. Surface plasmon coupling effects on the förster resonance energy transfer from quantum dot into rhodamine 6G. Nanotechnology 2021; 32:295202. [PMID: 33848997 DOI: 10.1088/1361-6528/abf775] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Accepted: 04/13/2021] [Indexed: 06/12/2023]
Abstract
Rhodamine 6G (R6G) molecules linked CdZnSeS/ZnS green-emitting quantum dots (QDs) are self-assembled onto Ag nanoparticles (NPs) for studying the surface plasmon (SP) coupling effect on the Förster resonance energy transfer (FRET) process from QD into R6G. SP coupling can enhance the emission efficiency of QD such that FRET has to compete with QD emission for transferring energy into R6G. It is found that FRET efficiency is reduced under the SP coupling condition. Although R6G emission efficiency can also be enhanced through SP coupling when it is directly linked onto Ag NP, the enhancement decreases when R6G is linked onto QD and then the QD-R6G complex is self-assembled onto Ag NP. In particular, R6G emission efficiency can be reduced through SP coupling when the number of R6G molecules linked onto a QD is high. A rate-equation model is built for resembling the measured photoluminescence decay profiles and providing us with more detailed explanations for the observed FRET and SP coupling behaviors.
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Affiliation(s)
- Chien-Yu Chen
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, section 4, Roosevelt Road, Taipei, 10617, Taiwan
| | - Chia-Chun Ni
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, section 4, Roosevelt Road, Taipei, 10617, Taiwan
| | - Ruei-Nan Wu
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, section 4, Roosevelt Road, Taipei, 10617, Taiwan
| | - Sheng-Yang Kuo
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, section 4, Roosevelt Road, Taipei, 10617, Taiwan
| | - Chia-Hao Li
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, section 4, Roosevelt Road, Taipei, 10617, Taiwan
| | - Yean-Woei Kiang
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, section 4, Roosevelt Road, Taipei, 10617, Taiwan
| | - C C Yang
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, section 4, Roosevelt Road, Taipei, 10617, Taiwan
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Liu S, Zhou R, Xia XQ, Ren H, Wang LY, Sang RR, Jiang M, Yang CC, Liu H, Wei L, Rong RM. Machine learning models to predict red blood cell transfusion in patients undergoing mitral valve surgery. Ann Transl Med 2021; 9:530. [PMID: 33987228 DOI: 10.21037/atm-20-7375] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Background Red blood cell (RBC) transfusion therapy has been widely used in surgery, and has yielded excellent treatment outcomes. However, in some instances, the demand for RBC transfusion is assessed by doctors based on their experience. In this study, we use machine learning models to predict the need for RBC transfusion during mitral valve surgery to guide the surgeon's assessment of the patient's need for intraoperative blood transfusion. Methods We retrospectively reviewed 698 cases of isolated mitral valve surgery with and without combined tricuspid valve operation. Seventy percent of the database was used as the training set and the remainder as the testing set for 13 machine learning algorithms to build a model to predict the need for intraoperative RBC transfusion. According to the characteristic value of model mining, we analyzed the risk-related factors to determine the main effects of variables influencing the outcome. Results A total of 166 patients of the cases considered had undergone intraoperative RBC transfusion (24.52%). Of the 13 machine learning algorithms, CatBoost delivered the best performance, with an AUC of 0.888 (95% CI: 0.845-0.909) in testing set. Further analysis using the CatBoost model revealed that hematocrit (<37.81%), age (>64 y), body weight (<59.92 kg), body mass index (BMI) (<22.56 kg/m2), hemoglobin (<122.6 g/L), type of surgery (median thoracotomy surgery), height (<160.61 cm), platelet (>194.12×109/L), RBC (<4.08×1012/L), and gender (female) were the main risk-related factors for RBC transfusion. A total of 204 patients were tested, 177 of whom were predicted accurately (86.8%). Conclusions Machine learning models can be used to accurately predict the outcomes of RBC transfusion, and should be used to guide surgeons in clinical practice.
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Affiliation(s)
- Shun Liu
- Department of Cardiovascular Surgery, Zhongshan Hospital, Shanghai Cardiovascular Institution, Fudan University, Shanghai, China
| | - Rong Zhou
- Department of Transfusion, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Xing-Qiu Xia
- Beijing HealSci Technology Co., Ltd., Beijing, China
| | - He Ren
- Beijing HealSci Technology Co., Ltd., Beijing, China
| | - Le-Ye Wang
- Key Laboratory of High Confidence Software Technologies (Peking University), Ministry of Education, Beijing, China.,Department of Computer Science and Technology, Peking University, Beijing, China
| | - Rui-Rui Sang
- Department of Transfusion, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Mi Jiang
- Department of Transfusion, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Chun-Chen Yang
- Department of Transfusion, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Huan Liu
- Department of Cardiovascular Surgery, Zhongshan Hospital, Shanghai Cardiovascular Institution, Fudan University, Shanghai, China
| | - Lai Wei
- Department of Cardiovascular Surgery, Zhongshan Hospital, Shanghai Cardiovascular Institution, Fudan University, Shanghai, China
| | - Rui-Ming Rong
- Department of Transfusion, Zhongshan Hospital, Fudan University, Shanghai, China
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Chen YP, Ni CC, Wu RN, Kuo SY, Su YC, Huang YY, Chen JW, Hsu YC, Wu SH, Chen CY, Wu PH, Kiang YW, Yang CC. Combined effects of surface plasmon coupling and Förster resonance energy transfer on the light color conversion behaviors of colloidal quantum dots on an InGaN/GaN quantum-well nanodisk structure. Nanotechnology 2021; 32:135206. [PMID: 33271517 DOI: 10.1088/1361-6528/abd05e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
By forming nanodisk (ND) structures on a blue-emitting InGaN/GaN quantum-well (QW) template, the QWs become close to the red-emitting quantum dots (QDs) and Ag nanoparticles (NPs) attached onto the sidewalls of the NDs such that Förster resonance energy transfer (FRET) and surface plasmon (SP) coupling can occur to enhance the efficiency of blue-to-red color conversion. With a larger ND height, more QWs are exposed to open air on the sidewall for more QD/Ag NP attachment through QD self-assembly and Ag NP drop casting such that the FRET and SP coupling effects, and hence the color conversion efficiency can be enhanced. A stronger FRET process leads to a longer QD photoluminescence (PL) decay time and a shorter QW PL decay time. It is shown that SP coupling can enhance the FRET efficiency.
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Affiliation(s)
- Yen-Po Chen
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei, 10617, Taiwan
| | - Chia-Chun Ni
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei, 10617, Taiwan
| | - Ruei-Nan Wu
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei, 10617, Taiwan
| | - Sheng-Yang Kuo
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei, 10617, Taiwan
| | - Yu-Cheng Su
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei, 10617, Taiwan
| | - Yang-Yi Huang
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei, 10617, Taiwan
| | - Jia-Wei Chen
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei, 10617, Taiwan
| | - Yi-Chiao Hsu
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei, 10617, Taiwan
| | - Shung-Hsiang Wu
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei, 10617, Taiwan
| | - Chien-Yu Chen
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei, 10617, Taiwan
| | - Ping-Hsiu Wu
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei, 10617, Taiwan
| | - Yean-Woei Kiang
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei, 10617, Taiwan
| | - C C Yang
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei, 10617, Taiwan
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Hung TF, Hsieh TH, Tseng FS, Wang LY, Yang CC, Yang CC. High-Mass Loading Hierarchically Porous Activated Carbon Electrode for Pouch-Type Supercapacitors with Propylene Carbonate-Based Electrolyte. Nanomaterials (Basel) 2021; 11:785. [PMID: 33808632 PMCID: PMC8003487 DOI: 10.3390/nano11030785] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/06/2021] [Revised: 03/15/2021] [Accepted: 03/16/2021] [Indexed: 12/15/2022]
Abstract
Rational design and development of the electrodes with high-mass loading yet maintaining the excellent electrochemical properties are significant for a variety of electrochemical energy storage applications. In comparison with the slurry-casted electrode, herein, a hierarchically porous activated carbon (HPAC) electrode with higher mass loading (8.3 ± 0.2 mg/cm2) is successfully prepared. The pouch-type symmetric device (1 cell) with the propylene carbonate-based electrolyte shows the rate capability (7.1 F at 1 mA/cm2 and 4.8 F at 10 mA/cm2) and the cycling stability (83% at 12,000 cycles). On the other hand, an initial discharge capacitance of 32.4 F and the capacitance retention of 96% after 30,000 cycles are delivered from a pouch-type symmetric supercapacitor (five cells). The corresponding electrochemical performances are attributed to the fascinating properties of the HPAC and the synergistic features of the resulting electrode.
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Affiliation(s)
- Tai-Feng Hung
- Battery Research Center of Green Energy, Ming Chi University of Technology, 84 Gungjuan Rd., Taishan Dist., New Taipei City 24301, Taiwan
| | - Tzu-Hsien Hsieh
- Green Technology Research Institute, CPC Corporation, 2 Zuonan Rd., Nan-Tsu Dist., Kaohsiung 81126, Taiwan;
| | - Feng-Shun Tseng
- Energy Storage Technology Division, Green Energy & Environment Research Laboratories, Industrial Technology Research Institute, 301 Gaofa 3rd Rd., Guiren Dist., Tainan 71150, Taiwan; (F.-S.T.); (L.-Y.W.); (C.-C.Y.)
| | - Lu-Yu Wang
- Energy Storage Technology Division, Green Energy & Environment Research Laboratories, Industrial Technology Research Institute, 301 Gaofa 3rd Rd., Guiren Dist., Tainan 71150, Taiwan; (F.-S.T.); (L.-Y.W.); (C.-C.Y.)
| | - Chang-Chung Yang
- Energy Storage Technology Division, Green Energy & Environment Research Laboratories, Industrial Technology Research Institute, 301 Gaofa 3rd Rd., Guiren Dist., Tainan 71150, Taiwan; (F.-S.T.); (L.-Y.W.); (C.-C.Y.)
| | - Chun-Chen Yang
- Battery Research Center of Green Energy, Ming Chi University of Technology, 84 Gungjuan Rd., Taishan Dist., New Taipei City 24301, Taiwan
- Department of Chemical Engineering, Ming Chi University of Technology, 84 Gungjuan Rd., Taishan Dist., New Taipei City 24301, Taiwan
- Department of Chemical and Materials Engineering, Chang Gung University, 259 Wenhua 1st Rd., Guishan Dist., Taoyuan 33302, Taiwan
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Venkatesh K, Muthukutty B, Chen SM, Karuppiah C, Amanulla B, Yang CC, Ramaraj SK. Nanomolar level detection of non-steroidal antiandrogen drug flutamide based on ZnMn 2O 4 nanoparticles decorated porous reduced graphene oxide nanocomposite electrode. J Hazard Mater 2021; 405:124096. [PMID: 33131940 DOI: 10.1016/j.jhazmat.2020.124096] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 09/10/2020] [Accepted: 09/23/2020] [Indexed: 06/11/2023]
Abstract
Flutamide is a non-steroidal antiandrogen drug and widely used in the treatment of prostatic carcinoma. Nevertheless, the excessive intake and improper disposal could affect the living organisms. In this work, we have synthesized a new nanocomposite based on ZnMn2O4 nanoparticles and porous reduced graphene oxide nanosheets (ZnMn2O4-PGO) for the electrocatalytic detection of flutamide (FLU) drug. The crystallinity and morphological properties of ZnMn2O4-PGO composite examined by different characterization techniques such as X-ray diffraction, Raman spectroscopy and so on. The fabricated ZnMn2O4-PGO nanocomposite modified electrode exhibited superior electrocatalytic performance to FLU drug in an optimized pH electrolyte. Fascinatingly, the electrode received a wide linear range (0.05-3.5 µM) with limit of detection of 8 nM. Besides, the developed ZnMn2O4-PGO nanocomposite electrode showed good sensitivity 1.05 µAµM-1 cm-2 and excellent selectivity for FLU detection in presence of various interfering species. A developed disposable electrode was scrutinized to determine FLU level in human urine samples by spiking method and the results achieved good recoveries in real sample analysis.
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Affiliation(s)
- Krishnan Venkatesh
- PG and Research Department of Chemistry, Thiagarajar College, Madurai, Tamil Nadu, India
| | - Balamurugan Muthukutty
- Electroanalysis and Biotelectrochemistry Lab, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No.1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan, ROC
| | - Shen-Ming Chen
- Electroanalysis and Biotelectrochemistry Lab, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No.1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan, ROC.
| | - Chelladurai Karuppiah
- Battery Research center of Green Energy, Ming Chi University of technology, New Taipei City 24301, Taiwan, ROC.
| | - Baishnisha Amanulla
- PG and Research Department of Chemistry, Thiagarajar College, Madurai, Tamil Nadu, India
| | - Chun-Chen Yang
- Battery Research center of Green Energy, Ming Chi University of technology, New Taipei City 24301, Taiwan, ROC.
| | - Sayee Kannan Ramaraj
- PG and Research Department of Chemistry, Thiagarajar College, Madurai, Tamil Nadu, India.
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Ni CC, Kuo SY, Li ZH, Wu SH, Wu RN, Chen CY, Yang CC. Förster resonance energy transfer in surface plasmon coupled color conversion processes of colloidal quantum dots. Opt Express 2021; 29:4067-4081. [PMID: 33770994 DOI: 10.1364/oe.415679] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Accepted: 01/14/2021] [Indexed: 06/12/2023]
Abstract
Förster resonance energy transfer (FRET) from a green-emitting quantum dot (GQD) into a red-emitting quantum dot (RQD) is an important mechanism in a multiple-color conversion process, particularly under the surface plasmon (SP) coupling condition for enhancing color conversion efficiency. Here, the dependencies of FRET efficiency on the relative concentrations of GQD and RQD in their mixtures and their surface molecule coatings for controlling surface charges are studied. Also, the SP coupling effects induced by two kinds of Ag nanoparticles on the emission behaviors of GQD and RQD are demonstrated, particularly when FRET is involved in the coupling process. FRET efficiency is reduced under the SP coupling condition. SP coupling can enhance the color conversion efficiency of either GQD or RQD. The combination of SP coupling and FRET can be used for controlling the relative converted light intensities in a multiple-color conversion process.
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Walle KZ, Musuvadhi Babulal L, Wu SH, Chien WC, Jose R, Lue SJ, Chang JK, Yang CC. Electrochemical Characteristics of a Polymer/Garnet Trilayer Composite Electrolyte for Solid-State Lithium-Metal Batteries. ACS Appl Mater Interfaces 2021; 13:2507-2520. [PMID: 33406841 DOI: 10.1021/acsami.0c17422] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Although solid-state Li-metal batteries (LMBs) featuring polymer-based solid electrolytes might one day replace conventional Li-ion batteries, the poor Li-ion conductivity of solid polymer electrolytes at low temperatures has hindered their practical applications. Herein, we describe the first example of using a co-precipitation method in a Taylor flow reactor to produce the metal hydroxides of both the Ga/F dual-doped Li7La3Zr2O12 (Ga/F-LLZO) ceramic electrolyte precursors and the Li2MoO4-modified Ni0.8Co0.1Mn0.1O2 (LMO@T-LNCM 811) cathode materials for LMBs. The Li/Nafion (LiNf)-coated Ga/F-LLZO (LiNf@Ga/F-LLZO) ceramic filler was finely dispersed in the poly(vinylidene fluoride)/polyacrylonitrile/lithium bis(trifluoromethanesulfonimide)/succinonitrile matrix to give a trilayer composite polymer electrolyte (denoted "Tri-CPE") through a simple solution-casting. The bulk ionic conductivity of the Tri-CPE at room temperature was approximately 4.50 × 10-4 S cm-1 and exhibited a high Li+ ion transference number (0.84). It also exhibits a broader electrochemical window of 1-5.04 V versus Li/Li+. A full cell based on a CR2032 coin cell containing the LMO@T-LNCM811-based composite cathode, when cycled under 1 C/1 C at room temperature for 300 cycles, achieved an average Columbic efficiency of 99.4% and a capacity retention of 89.8%. This novel fabrication strategy for Tri-CPE structures has potential applications in the preparation of highly safe high-voltage cathodes for solid-state LMBs.
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Affiliation(s)
- Kumlachew Zelalem Walle
- Battery Research Center of Green Energy, Ming Chi University of Technology, New Taipei City 24301, Taiwan, R.O.C
| | | | - She Huang Wu
- Graduate Institute of Science and Technology, National Taiwan University of Science and Technology, 43, Sec. 4, Keelung Road, Taipei 106, Taiwan, R.O.C
| | - Wen-Chen Chien
- Battery Research Center of Green Energy, Ming Chi University of Technology, New Taipei City 24301, Taiwan, R.O.C
- Department of Chemical Engineering, Ming Chi University of Technology, New Taipei City 24301, Taiwan, R.O.C
| | - Rajan Jose
- Nanostructured Renewable Energy Materials Laboratory, Faculty of Industrial Sciences and Technology, University Malaysia Pahang, 26300 Kuantan, Malaysia
| | - Shingjiang Jessie Lue
- Department of Chemical and Materials Engineering, and Green Technology Research Center, Chang Gung University, Taoyuan City 333, Taiwan, R.O.C
- Department of Radiation Oncology, Chang Gung Memorial Hospital, Taoyuan City 333, Taiwan, R.O.C
- Department of Safety, Health and Environmental Engineering, Ming Chi University of Technology, New Taipei City 243, Taiwan, R.O.C
| | - Jeng-Kuei Chang
- Department of Materials Science and Engineering, National Chiao Tung University, Hsinchu, 30010, Taiwan, R.O.C
| | - Chun-Chen Yang
- Battery Research Center of Green Energy, Ming Chi University of Technology, New Taipei City 24301, Taiwan, R.O.C
- Department of Chemical Engineering, Ming Chi University of Technology, New Taipei City 24301, Taiwan, R.O.C
- Department of Chemical and Materials Engineering, and Green Technology Research Center, Chang Gung University, Taoyuan City 333, Taiwan, R.O.C
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Beshahwured SL, Wu YS, Wu SH, Chien WC, Jose R, Lue SJ, Yang CC. Flexible hybrid solid electrolyte incorporating ligament-shaped Li6.25Al0.25La3Zr2O12 filler for all-solid-state lithium-metal batteries. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2020.137348] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Nguyen TNP, Karuppiah C, Chien WC, Wu SH, Jose R, Lue SJ, Yang CC. Mechanical alloy coating of LATP decorated porous carbon on LiFe1/3Mn1/3Co1/3PO4/C composite cathode for high-voltage Li-ion battery. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.136980] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Chien WC, Li YR, Wu SH, Wu YS, Wu ZH, James Li YJ, Yang CC. Modifying the morphology and structure of graphene oxide provides high-performance LiFePO4/C/rGO composite cathode materials. ADV POWDER TECHNOL 2020. [DOI: 10.1016/j.apt.2020.10.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Chen ZY, Chen SH, Chen CH, Chou PY, Yang CC, Lin FH. Polysaccharide Extracted from Bletilla striata Promotes Proliferation and Migration of Human Tenocytes. Polymers (Basel) 2020; 12:polym12112567. [PMID: 33139654 PMCID: PMC7694129 DOI: 10.3390/polym12112567] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 10/26/2020] [Accepted: 10/30/2020] [Indexed: 12/18/2022] Open
Abstract
Tendon healing after injury is relatively slow, mainly because of the weak activity and metabolic properties of tendon cells (tenocytes). Bletilla striata polysaccharide (BSP) has been reported to enhance cell proliferation. Here, we aimed to increase tendon cell proliferation by BSP treatment. We isolated tenocytes from the flexor tendon of human origin. Moreover, we improved the process of extracting BSP. When human tenocytes (HTs) were treated with 100 μg/mL BSP, the MEK/ERK1/2 and PI3K/Akt signaling pathways were activated, thereby enhancing the proliferation ability of tenocytes. BSP treatment also increased the migration of HTs and their ability to secrete the extracellular matrix (Col-I and Col-III). In conclusion, BSP was successfully extracted from a natural Chinese herbal extract and was shown to enhance tenocytes proliferation, migration and collagen release ability. This study is the first to demonstrate improved healing of tendons using BSP.
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Affiliation(s)
- Zhi-Yu Chen
- Institute of Biomedical Engineering, College of Medicine and College of Engineering, National Taiwan University, Taipei 100, Taiwan; (Z.-Y.C.); (S.-H.C.)
| | - Shih-Heng Chen
- Institute of Biomedical Engineering, College of Medicine and College of Engineering, National Taiwan University, Taipei 100, Taiwan; (Z.-Y.C.); (S.-H.C.)
- Department of Plastic and Reconstructive Surgery, Chang Gung Memorial Hospital, Chang Gung University and Medical College, Taoyuan 333, Taiwan; (C.-H.C.); (P.-Y.C.)
| | - Chih-Hao Chen
- Department of Plastic and Reconstructive Surgery, Chang Gung Memorial Hospital, Chang Gung University and Medical College, Taoyuan 333, Taiwan; (C.-H.C.); (P.-Y.C.)
| | - Pang-Yun Chou
- Department of Plastic and Reconstructive Surgery, Chang Gung Memorial Hospital, Chang Gung University and Medical College, Taoyuan 333, Taiwan; (C.-H.C.); (P.-Y.C.)
| | - Chun-Chen Yang
- Department of Materials Science and Engineering, National Taiwan University, Taipei 100, Taiwan;
| | - Feng-Huei Lin
- Institute of Biomedical Engineering, College of Medicine and College of Engineering, National Taiwan University, Taipei 100, Taiwan; (Z.-Y.C.); (S.-H.C.)
- Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Miaoli 350, Taiwan
- Correspondence: ; Tel.: +886-928260400
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Yang CC, Wang CX, Kuan CY, Chi CY, Chen CY, Lin YY, Chen GS, Hou CH, Lin FH. Using C-doped TiO 2 Nanoparticles as a Novel Sonosensitizer for Cancer Treatment. Antioxidants (Basel) 2020; 9:E880. [PMID: 32957611 PMCID: PMC7554704 DOI: 10.3390/antiox9090880] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 09/11/2020] [Accepted: 09/15/2020] [Indexed: 11/18/2022] Open
Abstract
Sonodynamic therapy is an effective treatment for eliminating tumor cells by irradiating sonosentitizer in a patient's body with higher penetration ultrasound and inducing the free radicals. Titanium dioxide has attracted the most attention due to its properties among many nanosensitizers. Hence, in this study, carbon doped titanium dioxide, one of inorganic materials, is applied to avoid the foregoing, and furthermore, carbon doped titanium dioxide is used to generate ROS under ultrasound irradiation to eliminate tumor cells. Spherical carbon doped titanium dioxide nanoparticles are synthesized by the sol-gel process. The forming of C-Ti-O bond may also induce defects in lattice which would be beneficial for the phenomenon of sonoluminescence to improve the effectiveness of sonodynamic therapy. By dint of DCFDA, WST-1, LDH and the Live/Dead test, carbon doped titanium dioxide nanoparticles are shown to be a biocompatible material which may induce ROS radicals to suppress the proliferation of 4T1 breast cancer cells under ultrasound treatment. From in vivo study, carbon doped titanium dioxide nanoparticles activated by ultrasound may inhibit the growth of the 4T1 tumor, and it showed a significant difference between sonodynamic therapy (SDT) and the other groups on the seventh day of the treatment.
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Affiliation(s)
- Chun-Chen Yang
- Department of Materials Science and Engineering, National Taiwan University, Taipei 10617, Taiwan; (C.-C.Y.); (C.-X.W.)
| | - Chong-Xuan Wang
- Department of Materials Science and Engineering, National Taiwan University, Taipei 10617, Taiwan; (C.-C.Y.); (C.-X.W.)
| | - Che-Yung Kuan
- PhD Program in Tissue Engineering and Regenerative Medicine, National Chung Hsing University, Taichung 40227, Taiwan; (C.-Y.K.); (C.-Y.C.); (Y.-Y.L.)
- Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Miaoli County 35053, Taiwan; (C.-Y.C.); (G.-S.C.)
| | - Chih-Ying Chi
- PhD Program in Tissue Engineering and Regenerative Medicine, National Chung Hsing University, Taichung 40227, Taiwan; (C.-Y.K.); (C.-Y.C.); (Y.-Y.L.)
- Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Miaoli County 35053, Taiwan; (C.-Y.C.); (G.-S.C.)
| | - Ching-Yun Chen
- Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Miaoli County 35053, Taiwan; (C.-Y.C.); (G.-S.C.)
- Department of Biomedical Sciences & Engineering, National Central University, Taoyuan City 32001, Taiwan
| | - Yu-Ying Lin
- PhD Program in Tissue Engineering and Regenerative Medicine, National Chung Hsing University, Taichung 40227, Taiwan; (C.-Y.K.); (C.-Y.C.); (Y.-Y.L.)
- Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Miaoli County 35053, Taiwan; (C.-Y.C.); (G.-S.C.)
| | - Gin-Shin Chen
- Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Miaoli County 35053, Taiwan; (C.-Y.C.); (G.-S.C.)
| | - Chun-Han Hou
- Department of Orthopedic Surgery, National Taiwan University, Taipei 10617, Taiwan
| | - Feng-Huei Lin
- Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Miaoli County 35053, Taiwan; (C.-Y.C.); (G.-S.C.)
- Institute of Biomedical Engineering, National Taiwan University, Taipei 10617, Taiwan
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43
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Kohila Rani K, Karuppiah C, Wang SF, Alaswad SO, Sireesha P, Devasenathipathy R, Jose R, Yang CC. Direct pyrolysis and ultrasound assisted preparation of N, S co-doped graphene/Fe 3C nanocomposite as an efficient electrocatalyst for oxygen reduction and oxygen evolution reactions. Ultrason Sonochem 2020; 66:105111. [PMID: 32248043 DOI: 10.1016/j.ultsonch.2020.105111] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 03/26/2020] [Accepted: 03/26/2020] [Indexed: 06/11/2023]
Abstract
Bifunctional electrocatalysts to enable efficient oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) are essential for fabricating high performance metal-air batteries and fuel cells. Here, a defect rich nitrogen and sulfur co-doped graphene/iron carbide (NS-GR/Fe3C) nanocomposite as an electrocatalyst for ORR and OER is demonstrated. An ink of NS-GR/Fe3C is developed by homogeneously dispersing the catalyst in a Nafion containing solvent mixture using an ultrasonication bath (Model-DC150H; power - 150 W; frequency - 40 kHz). The ultrasonically prepared ink is used for preparing the electrode for electrochemical studies. In the case of ORR, the positive half-wave potential displayed by NS-GR/Fe3C is 0.859 V (vs. RHE) and for the OER, onset potential is 1.489 V (vs. RHE) with enhanced current density. The optimized NS-GR/Fe3C electrode exhibited excellent ORR/OER bifunctional activities, high methanol tolerance and excellent long-term cycling stability in an alkaline medium. The observed onset potential for NS-GR/Fe3C electrocatalyst is comparable with the commercial noble metal catalyst, thereby revealing one of the best low-cost alternative air-cathode catalysts for the energy conversion and storage application.
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Affiliation(s)
- Karuppasamy Kohila Rani
- Department of Materials and Mineral Resources Engineering, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan, ROC
| | - Chelladurai Karuppiah
- Battery Research Center of Green Energy, Ming Chi University of Technology, New Taipei City 24301, Taiwan, ROC.
| | - Sea-Fue Wang
- Department of Materials and Mineral Resources Engineering, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan, ROC.
| | - Saleh O Alaswad
- Nuclear Science Research Institute (NSRI), King Abdulaziz City for Science and Technology (KACST), P.O Box 6086, 11442 Riyad, Saudi Arabia
| | - Pedaballi Sireesha
- Department of Materials and Mineral Resources Engineering, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan, ROC
| | - Rajkumar Devasenathipathy
- Department of Materials and Mineral Resources Engineering, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan, ROC
| | - Rajan Jose
- Nanostructured Renewable Energy Materials Laboratory, Faculty of Industrial Sciences & Technology, Universiti Malaysia Pahang, 26300 Kuantan, Malaysia
| | - Chun-Chen Yang
- Battery Research Center of Green Energy, Ming Chi University of Technology, New Taipei City 24301, Taiwan, ROC; Department of Chemical Engineering, Ming Chi University of Technology, New Taipei City 24301, Taiwan, ROC; Department of Chemical and Materials Engineering, Chang Gung University, Taoyuan City 333, Taiwan, ROC.
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44
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Alagar S, Madhuvilakku R, Mariappan R, Karuppiah C, Yang CC, Piraman S. Ultra-stable Mn 1-xNi xCO 3 nano/sub-microspheres positive electrodes for high-performance solid-state asymmetric supercapacitors. Sci Rep 2020; 10:8871. [PMID: 32483292 PMCID: PMC7264220 DOI: 10.1038/s41598-020-64867-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Accepted: 11/21/2019] [Indexed: 11/17/2022] Open
Abstract
Long-term cycling performance of electrodes for application in supercapcitor has received large research interest in recent years. Ultra-stable Mn1-xNixCO3 (x-0, 0.20, 0.25 and 0.30) nano/sub-microspheres were synthesized via simple co-precipitation method and the Mn1-xNixCO3 was confirmed by XRD, FT-IR, XPS and their morphology was studied by SEM and TEM analysis. Among the various Mn1-xNixCO3 electrodes, the Mn0.75Ni0.25CO3 electrode exhibited the higher specific capacitance (364 F g-1 at 1 A g-1) with capacity retention of 96% after 7500 cycles at 5 A g-1. Moreover, the assembled solid-state asymmetric supercapacitor based on Mn0.75Ni0.25CO3//graphene nanosheets performed a high specific capacity of 46 F g-1 and energy density of 25 Wh kg-1 at a power density of 499 W kg-1 along with high capacity retention of 87.7% after 7500 cycles. The improved electrochemical performances are mainly owing to the intrinsic conductivity and electrochemical activity of MnCO3 after Mn1-xNixCO3 (x-0.20, 0.25 and 0.30) with appropriate Ni concentration. This study highlights the potentiality of the Mn0.75Ni0.25CO3//GNS asymmetric supercapacitor device for promising energy storage applications.
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Affiliation(s)
- Srinivasan Alagar
- Sustainable Energy and Smart Materials Research Lab, Department of Nanoscience and Technology, Science Campus, Alagappa University, Karaikudi, 630002, Tamil Nadu, India
| | - Rajesh Madhuvilakku
- Sustainable Energy and Smart Materials Research Lab, Department of Nanoscience and Technology, Science Campus, Alagappa University, Karaikudi, 630002, Tamil Nadu, India
| | - Ramalakshmi Mariappan
- Sustainable Energy and Smart Materials Research Lab, Department of Nanoscience and Technology, Science Campus, Alagappa University, Karaikudi, 630002, Tamil Nadu, India
| | - Chelladurai Karuppiah
- Battery Research Center of Green Energy, Ming Chi University of Technology, New Taipei City, 24301, ROC, Taiwan
| | - Chun-Chen Yang
- Battery Research Center of Green Energy, Ming Chi University of Technology, New Taipei City, 24301, ROC, Taiwan
| | - Shakkthivel Piraman
- Sustainable Energy and Smart Materials Research Lab, Department of Nanoscience and Technology, Science Campus, Alagappa University, Karaikudi, 630002, Tamil Nadu, India.
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45
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Tse WF, Wu RN, Lu CC, Hsu YC, Chen YP, Kuo SY, Su YC, Wu PH, Kuo Y, Kiang YW, Yang CC. Spatial range of the plasmonic Dicke effect in an InGaN/GaN multiple quantum well structure. Nanotechnology 2020; 31:295001. [PMID: 32268310 DOI: 10.1088/1361-6528/ab87cc] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The plasmonic Dicke effect means a cooperative emission mechanism of multiple light emitters when they are simultaneously coupled with the same surface plasmon (SP) mode of a metal nanostructure to achieve a higher collective emission efficiency. Here, we compare the enhancements of emission efficiency among a series of SP-coupled InGaN/GaN quantum-well (QW) structures of different QW period numbers to show an emission behavior consistent with the plasmonic Dicke effect. The relative enhancement of overall emission efficiency increases with QW period number until it reaches a critical value, beyond which the enhancement starts to decrease. This critical QW period number corresponds to the effective depth range of the plasmonic Dicke effect in a multiple-QW system. It also represents an optimized QW structure for maximizing the SP coupling effect. Internal quantum efficiency and time-resolved photoluminescence are measured for comparing the enhanced emission efficiencies of blue and green QW structures with different QW period numbers through SP coupling induced by surface Ag nanoparticles.
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Affiliation(s)
- Wai Fong Tse
- Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei 10617, Taiwan
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46
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Wang YT, Wu RN, Ni CC, Lu CC, Cai CJ, Tse WF, Chang WY, Kuo Y, Kiang YW, Yang CC. Important role of surface plasmon coupling with the quantum wells in a surface plasmon enhanced color-converting structure of colloidal quantum dots on quantum wells. Opt Express 2020; 28:13352-13367. [PMID: 32403812 DOI: 10.1364/oe.390478] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Accepted: 04/11/2020] [Indexed: 06/11/2023]
Abstract
To improve the color-conversion efficiency based on a quantum-well (QW) light-emitting diode (LED), a more energy-saving strategy is needed to increase the energy transfer efficiency from the electrical input power of the LED into the emission of over-coated color-converter, not just from LED emission into converted light. In this regard, the efficiency of energy transfer of any mechanism from LED QW into the color-converter is an important issue. By overlaying blue-emitting QW structures and GaN templates with both deposited metal nanoparticles (DMNPs) and color-converting quantum dot (QD) linked synthesized metal nanoparticles (SMNPs) of different localized surface plasmon (LSP) resonance wavelengths for producing multiple surface plasmon (SP) coupling mechanisms with the QW and QD, we study the enhancement variations of their internal quantum efficiencies and photoluminescence decay times. By comparing the QD emission efficiencies between the samples with and without QW, one can observe the advantageous effect of QW coupling with LSP resonances on QD emission efficiency. Also, with the LSP resonance wavelengths of both DMNPs and SMNPs close to the QW emission wavelength for producing strong SP coupling with the QW and hence QD absorption, a higher QD emission or color-conversion efficiency can be obtained.
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47
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Ji J, Zhang G, Yang S, Feng X, Zhang X, Yang CC. Theoretical analysis of a white-light LED array based on a GaN nanorod structure. Appl Opt 2020; 59:2345-2351. [PMID: 32225766 DOI: 10.1364/ao.387059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Accepted: 02/08/2020] [Indexed: 06/10/2023]
Abstract
Based on the experimentally demonstrated In content distribution in the InGaN/GaN quantum wells on a two-section GaN nanorod (NR) sidewall, a white-light light-emitting diode (LED) without phosphor is designed and simulated. Following the dependencies of the In diffusion length and incorporation ratio on NR geometric variables of a theoretical model, the height, radius, and tapering section geometry of the GaN NR are designed for controlling the relative intensities of a blue and a yellow emission component to mix into white light. The higher-In upper section of the NR is first excited to emit a relatively stronger yellow component when injection current is low. As the injection current increases, more current spreads into the lower-In lower section, eventually leading to a stronger blue emission component. The proposed NR LED structure provides an alternative solution for phosphor-free white-light generation.
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48
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Cai CJ, Wang YT, Ni CC, Wu RN, Chen CY, Kiang YW, Yang CC. Emission behaviors of colloidal quantum dots linked onto synthesized metal nanoparticles. Nanotechnology 2020; 31:095201. [PMID: 31731282 DOI: 10.1088/1361-6528/ab5826] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
With two different residual surfactants, four different metal nanoparticles (NPs), including two Au NPs and two Ag NPs are synthesized for linking with red-emitting CdZnSeS/ZnS colloidal quantum dots (QDs) to enhance QD emission efficiency. Those metal NPs are first connected with amino polyethylene glycol thiol of different molecular weights to avoid aggregation and make them positively charged. They can attract negatively charged QDs for inducing surface plasmon (SP) coupling such that either QD absorption or emission and hence overall color conversion efficiency can be enhanced. The enhancement of QD emission efficiency is evaluated through the comparison of time-resolved photoluminescence behaviors under different QD linkage conditions. Such results are confirmed by the measurement of the emission quantum efficiency of QD. It is found that by linking QDs onto Ag NPs, the QD emission efficiency is more enhanced, when compared with Au NPs. Also, depending on the synthesis process, the residual surfactant of citrate leads to a relatively large increment in QD emission efficiency, when compared to the surfactant of cetrimonium chloride. A more enhanced QD emission efficiency is caused by a higher QD linkage capability and a stronger SP coupling effect.
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Affiliation(s)
- Cheng-Jin Cai
- Institute of Photonics and Optoelectronics, National Taiwan University, No. 1, section 4, Roosevelt Road, Taipei, 10617, Taiwan
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49
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Yang DD, Zhao M, Zhang RD, Zhang Y, Yang CC, Jiang Q. NiS 2 nanoparticles anchored on open carbon nanohelmets as an advanced anode for lithium-ion batteries. Nanoscale Adv 2020; 2:512-519. [PMID: 36134007 PMCID: PMC9416909 DOI: 10.1039/c9na00661c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Accepted: 12/13/2019] [Indexed: 06/16/2023]
Abstract
Low intrinsic conductivity and large volume expansion seriously restrict the efficient lithium storage performance of metal sulfides. Here, we fabricate a hybrid material of NiS2 nanoparticles/carbon nanohelmets (NiS2/CNHs) to address the above issues. As an anode material in lithium-ion batteries, NiS2/CNHs exhibit excellent cycling stability (490 mA h g-1 after 3000 cycles at 5 A g-1) and rate properties (412 mA h g-1 at 10 A g-1), outperforming other NiS x -based anode materials. These remarkable performances originate from the three-dimensional helmet-like integrated architecture of NiS2/CNHs, which reduces the electrode resistance due to the tight combination between NiS2 and CNHs, provides efficient diffusion paths for the electrolyte and Li+ owing to the amorphous nanoporous carbon structure, and significantly mitigates the aggregation and buffers the large volumetric expansion of NiS2 nanoparticles upon long-term cycling thanks to the open three-dimensional architecture and well-dispersed NiS2 nanoparticles on it.
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Affiliation(s)
- D D Yang
- Key Laboratory of Automobile Materials (Jilin University), Ministry of Education, School of Materials Science and Engineering, Jilin University Changchun 130022 China +86-431-85095876 +86-431-85095371
| | - M Zhao
- Key Laboratory of Automobile Materials (Jilin University), Ministry of Education, School of Materials Science and Engineering, Jilin University Changchun 130022 China +86-431-85095876 +86-431-85095371
| | - R D Zhang
- Key Laboratory of Automobile Materials (Jilin University), Ministry of Education, School of Materials Science and Engineering, Jilin University Changchun 130022 China +86-431-85095876 +86-431-85095371
| | - Y Zhang
- Key Laboratory of Automobile Materials (Jilin University), Ministry of Education, School of Materials Science and Engineering, Jilin University Changchun 130022 China +86-431-85095876 +86-431-85095371
| | - C C Yang
- Key Laboratory of Automobile Materials (Jilin University), Ministry of Education, School of Materials Science and Engineering, Jilin University Changchun 130022 China +86-431-85095876 +86-431-85095371
| | - Q Jiang
- Key Laboratory of Automobile Materials (Jilin University), Ministry of Education, School of Materials Science and Engineering, Jilin University Changchun 130022 China +86-431-85095876 +86-431-85095371
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50
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Alagar S, Karuppiah C, Madhuvilakku R, Piraman S, Yang CC. Temperature-Controlled Synthesis of Li- and Mn-Rich Li 1.2Mn 0.54Ni 0.13Co 0.13O 2 Hollow Nano/Sub-Microsphere Electrodes for High-Performance Lithium-Ion Battery. ACS Omega 2019; 4:20285-20296. [PMID: 31815231 PMCID: PMC6893958 DOI: 10.1021/acsomega.9b02766] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Accepted: 10/18/2019] [Indexed: 06/10/2023]
Abstract
The calcination temperature plays a significant role in the structural, textural, and energy-storage performance of metal oxide nanomaterials in Li-ion battery application. Here, we report the formation of well-crystallized homogeneously dispersed Li1.2Mn0.54Ni0.13Co0.13O2 hollow nano/sub-microsphere architectures through a simple cost-effective coprecipitation and chemical mixing route without surface modification for improving the efficiency of energy storage devices. The synthesized Li1.2Mn0.54Ni0.13Co0.13O2 hollow nano/sub-microsphere cathode materials are calcined at 800, 900, 950, and 1000 °C. Among them, Li1.2Mn0.54Ni0.13Co0.13O2 calcined at 950 °C exhibits a high discharge capacity (277 mAh g-1 at 0.1C rate) and excellent capacity retention (88%) after 50 cycles and also delivers an excellent discharge capacity of >172 mAh g-1 at 5C rate. Good electrochemical performance of Li1.2Mn0.54Ni0.13Co0.13O2-950 is directly related to the optimized size of its primary particles (85 nm) (which constitute the spherical secondary particle, ∼720 nm) and homogeneous cation mixing. Higher calcination temperature (≥950 °C) leads to an increase of the primary particle size, poor cycling stability, and inferior rate capacity of Li1.2Mn0.54Ni0.13Co0.13O2 due to smashing of quasi-hollow spheres upon repeated lithium ion intercalations/deintercalations. Therefore, Li1.2Mn0.54Ni0.13Co0.13O2-950 is a promising electrode for the next-generation high-voltage and high-capacity Li-ion battery application.
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Affiliation(s)
- Srinivasan Alagar
- Sustainable
Energy and Smart Materials Research Lab, Department of Nanoscience
and Technology, Science Campus, Alagappa
University, Karaikudi 630002, Tamil Nadu, India
| | - Chelladurai Karuppiah
- Battery
Research Center of Green Energy, Ming Chi
University of Technology, New Taipei
City 24301, Taiwan, ROC
| | - Rajesh Madhuvilakku
- Sustainable
Energy and Smart Materials Research Lab, Department of Nanoscience
and Technology, Science Campus, Alagappa
University, Karaikudi 630002, Tamil Nadu, India
| | - Shakkthivel Piraman
- Sustainable
Energy and Smart Materials Research Lab, Department of Nanoscience
and Technology, Science Campus, Alagappa
University, Karaikudi 630002, Tamil Nadu, India
| | - Chun-Chen Yang
- Battery
Research Center of Green Energy, Ming Chi
University of Technology, New Taipei
City 24301, Taiwan, ROC
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