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Yin H, Tan C, Siddiqui S, Arumugam PU. Electrochemical Redox Cycling Behavior of Gold Nanoring Electrodes Microfabricated on a Silicon Micropillar. MICROMACHINES 2023; 14:726. [PMID: 37420959 DOI: 10.3390/mi14040726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 03/10/2023] [Accepted: 03/22/2023] [Indexed: 07/09/2023]
Abstract
We report the microfabrication and characterization of concentric gold nanoring electrodes (Au NREs), which were fabricated by patterning two gold nanoelectrodes on the same silicon (Si) micropillar tip. Au NREs of 165 ± 10 nm in width were micropatterned on a 6.5 ± 0.2 µm diameter 80 ± 0.5 µm height Si micropillar with an intervening ~ 100 nm thick hafnium oxide insulating layer between the two nanoelectrodes. Excellent cylindricality of the micropillar with vertical sidewalls as well as a completely intact layer of a concentric Au NRE including the entire micropillar perimeter has been achieved as observed via scanning electron microscopy and energy dispersive spectroscopy data. The electrochemical behavior of the Au NREs was characterized by steady-state cyclic voltammetry and electrochemical impedance spectroscopy. The applicability of Au NREs to electrochemical sensing was demonstrated by redox cycling with the ferro/ferricyanide redox couple. The redox cycling amplified the currents by 1.63-fold with a collection efficiency of > 90% on a single collection cycle. The proposed micro-nanofabrication approach with further optimization studies shows great promise for the creation and expansion of concentric 3D NRE arrays with controllable width and nanometer spacing for electroanalytical research and applications such as single-cell analysis and advanced biological and neurochemical sensing.
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Affiliation(s)
- Haocheng Yin
- School of Microelectronics, Xidian University, Key Laboratory of Wide Band-Gap Semiconductor Materials and Devices of China, Xi'an 710071, China
| | - Chao Tan
- Institute for Micromanufacturing, Louisiana Tech University, Ruston, LA 71272, USA
| | - Shabnam Siddiqui
- Department of Chemistry and Physics, Louisiana State University Shreveport, Shreveport, LA 71101, USA
| | - Prabhu U Arumugam
- Institute for Micromanufacturing, Louisiana Tech University, Ruston, LA 71272, USA
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Kumar A, Tan CS, Kumar N, Singh P, Sharma Y, Leu J, Huang EW, Winie T, Wei KH, Tseng TY. Pentafluoropyridine functionalized novel heteroatom-doped with hierarchical porous 3D cross-linked graphene for supercapacitor applications. RSC Adv 2021; 11:26892-26907. [PMID: 35479971 PMCID: PMC9037669 DOI: 10.1039/d1ra03911c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Accepted: 07/12/2021] [Indexed: 11/25/2022] Open
Abstract
The fabrication with high energy density and superior electrical/electrochemical properties of hierarchical porous 3D cross-linked graphene-based supercapacitors is one of the most urgent challenges for developing high-power energy supplies. We facilely synthesized a simple, eco-friendly, cost-effective heteroatoms (nitrogen, phosphorus, and fluorine) co-doped graphene oxide (NPFG) reduced by hydrothermal functionalization and freeze-drying approach with high specific surface areas and hierarchical pore structures. The effect of different heteroatoms doping on the energy storage performance of the synthesized reduced graphene oxide is investigated extensively. The electrochemical analysis performed in a three-electrode system via cyclic voltammetry (CV), galvanostatic charging–discharging (GCD), and electrochemical impedance spectroscopy (EIS) demonstrates that the nitrogen, phosphorous, and fluorine co-doped graphene (NPFG-0.3) synthesized with the optimum amount of pentafluoropyridine and phytic acid (PA) exhibits a notably enhanced specific capacitance (319 F g−1 at 0.5 A g−1), good rate capability, short relaxation time constant (τ = 28.4 ms), and higher diffusion coefficient of electrolytic cations (Dk+ = 8.8261 × 10−9 cm2 s−1) in 6 M KOH aqueous electrolyte. The density functional theory (DFT) calculation result indicates that the N, F, and P atomic replacement within the rGO model could increase the energy value (GT) from −673.79 eV to −643.26 eV, demonstrating how the atomic level energy could improve the electrochemical reactivity with the electrolyte. The improved performance of NPFG-0.3 over NFG, PG, and pure rGO is mainly ascribed to the fast-kinetic process owing to the well-balanced electron/ion transport phenomenon. A symmetric coin cell supercapacitor device fabricated using NPFG-0.3 as the anode and cathode material with 6 M KOH aqueous electrolyte exhibits maximum specific energy of 38 W h kg−1, a maximum specific power of 716 W kg−1, and ∼88.2% capacitance retention after 10 000 cycles. The facile synthesis approach and promising electrochemical results suggest this synthesized NPFG-0.3 material has high potential for future supercapacitor application. Demonstration of the effect of Gibbs free energy (GT = −643.26 eV) on N, P, F co-doped graphene, simulated via density functional theory (DFT).![]()
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Affiliation(s)
- Amit Kumar
- Department of Materials Science and Engineering, National Yang Ming Chiao Tung University Hsinchu 300 Taiwan.,Institute of Electronics, National Yang Ming Chiao Tung University Hsinchu 300 Taiwan
| | - Chih-Shan Tan
- Institute of Electronics, National Yang Ming Chiao Tung University Hsinchu 300 Taiwan
| | - Nagesh Kumar
- Centre of Nanotechnology, I. I. T. Roorkee Roorkee 247667 India
| | - Pragya Singh
- Institute of Electronics, National Yang Ming Chiao Tung University Hsinchu 300 Taiwan
| | - Yogesh Sharma
- Centre of Nanotechnology, I. I. T. Roorkee Roorkee 247667 India
| | - Jihperng Leu
- Department of Materials Science and Engineering, National Yang Ming Chiao Tung University Hsinchu 300 Taiwan
| | - E-Wen Huang
- Department of Materials Science and Engineering, National Yang Ming Chiao Tung University Hsinchu 300 Taiwan
| | - Tan Winie
- Faculty of Applied Sciences, Universiti Teknologi MARA 40450 Shah Alam Selangor Malaysia
| | - Kung-Hwa Wei
- Department of Materials Science and Engineering, National Yang Ming Chiao Tung University Hsinchu 300 Taiwan
| | - Tseung Yuen Tseng
- Institute of Electronics, National Yang Ming Chiao Tung University Hsinchu 300 Taiwan
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Tallman KR, West PJ, Yan S, Yao S, Quilty CD, Wang F, Marschilok AC, Bock DC, Takeuchi KJ, Takeuchi ES. Structural and electrochemical investigation of crystallite size controlled zinc ferrite (ZnFe 2O 4). NANOTECHNOLOGY 2021; 32:375403. [PMID: 34107466 DOI: 10.1088/1361-6528/ac09a9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 06/09/2021] [Indexed: 06/12/2023]
Abstract
Zinc ferrite, ZnFe2O4(ZFO), is a promising electrode material for next generation Li-ion batteries because of its high theoretical capacity and low environmental impact. In this report, synthetic control of crystallite size from the nanometer to submicron scale enabled probing of the relationships between ZFO size and electrochemical behavior. A facile two-step coprecipitation and annealing preparation method was used to prepare ZFO with controlled sizes ranging ∼9 to >200 nm. Complementary synchrotron and electron microscopy techniques were used to characterize the series of materials. Increasing the annealing temperature increased crystallinity and decreased microstrain, while local structural ordering was maintained independent of crystallite size. Electrochemical characterization revealed that the smaller sized materials delivered higher capacities during initial lithiation. Larger sized particles exhibited a lack of distinct electrochemical signatures above 1.0 V, suggesting that the longer diffusion length associated with greater crystallite size causes the lithiation process to proceed via non discrete lithium insertion, cation migration, and conversion processes. Notably, larger particles exhibited enhanced electrochemical reversibility over 50 cycles, with capacity retention improving from <20% to >40% at C/2 cycling rate. This intriguing result was probed through x-ray absorption spectroscopy (XAS) and x-ray photoelectron spectroscopy (XPS) measurements of the cycled electrodes. XAS revealed that the larger crystallite size materials do not completely convert to Fe0during the first lithiation and that independent of size, delithiation results in the formation of nanocrystalline FeO and ZnO phases rather than ZnFe2O4. After 20 cycles, the larger crystallites showed reversibility between partially oxidized FeO in the charged state and Fe0in the discharged state, while the smaller crystallite size material was electrochemically inactive as Fe0. XPS analysis revealed more significant solid electrolyte interphase (SEI) formation on the cycled electrodes utilizing ZFO with smaller crystallite size. This finding suggests that excessive SEI buildup on the smaller sized, higher surface area ZFO particles contributes to their reduced electrochemical reversibility relative to the larger crystallite size materials.
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Affiliation(s)
- Killian R Tallman
- Institute for Electrochemically Stored Energy, Stony Brook University, Stony Brook, NY 11794, United States of America
- Department of Chemistry, Stony Brook University, Stony Brook, NY 11794, United States of America
| | - Patrick J West
- Institute for Electrochemically Stored Energy, Stony Brook University, Stony Brook, NY 11794, United States of America
- Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, NY 11794, United States of America
| | - Shan Yan
- Institute for Electrochemically Stored Energy, Stony Brook University, Stony Brook, NY 11794, United States of America
- Interdisciplinary Science Department, Brookhaven National Laboratory, Upton, NY 11973, United States of America
| | - Shanshan Yao
- Interdisciplinary Science Department, Brookhaven National Laboratory, Upton, NY 11973, United States of America
| | - Calvin D Quilty
- Institute for Electrochemically Stored Energy, Stony Brook University, Stony Brook, NY 11794, United States of America
- Department of Chemistry, Stony Brook University, Stony Brook, NY 11794, United States of America
| | - Feng Wang
- Interdisciplinary Science Department, Brookhaven National Laboratory, Upton, NY 11973, United States of America
| | - Amy C Marschilok
- Institute for Electrochemically Stored Energy, Stony Brook University, Stony Brook, NY 11794, United States of America
- Department of Chemistry, Stony Brook University, Stony Brook, NY 11794, United States of America
- Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, NY 11794, United States of America
- Interdisciplinary Science Department, Brookhaven National Laboratory, Upton, NY 11973, United States of America
| | - David C Bock
- Institute for Electrochemically Stored Energy, Stony Brook University, Stony Brook, NY 11794, United States of America
- Interdisciplinary Science Department, Brookhaven National Laboratory, Upton, NY 11973, United States of America
| | - Kenneth J Takeuchi
- Institute for Electrochemically Stored Energy, Stony Brook University, Stony Brook, NY 11794, United States of America
- Department of Chemistry, Stony Brook University, Stony Brook, NY 11794, United States of America
- Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, NY 11794, United States of America
- Interdisciplinary Science Department, Brookhaven National Laboratory, Upton, NY 11973, United States of America
| | - Esther S Takeuchi
- Institute for Electrochemically Stored Energy, Stony Brook University, Stony Brook, NY 11794, United States of America
- Department of Chemistry, Stony Brook University, Stony Brook, NY 11794, United States of America
- Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, NY 11794, United States of America
- Interdisciplinary Science Department, Brookhaven National Laboratory, Upton, NY 11973, United States of America
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Ling W, Hao Y, Wang H, Xu H, Huang X. A novel Cu-metal-organic framework with two-dimensional layered topology for electrochemical detection using flexible sensors. NANOTECHNOLOGY 2019; 30:424002. [PMID: 31368448 DOI: 10.1088/1361-6528/ab30b6] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
We present a novel Cu-metal-organic framework (MOF) with two-dimensional layered topology and techniques to integrate it with flexible sensors for electrochemical detection. The unique Cu-MOF is formed by coordinating Cu2+ ions with carboxylic oxygen groups, resulting in layered structures interlayerly connected by hydrogen bonds. The resulting flexible sensors exhibit capability in detecting ascorbic acid (AA), hydrogen peroxide (H2O2) and L-Histidine (L-His) with detection limits of 2.94, 4.1 and 5.3 μM, respectively. The linear ranges of the sensors compare favorably with other sensors based on rigid platforms that offer similar sensitivity. According to the result of cytotoxicity study, the MOFs-modified flexible sensors exhibit good biocompatibility to cells, suggesting potential use in in vivo chemical detection. The results presented here demonstrate applications of MOFs in facilitating highly stable electrochemical detection in flexible electronics, and provide fundamental knowledge about structure-dependent electrochemical properties of MOFs and changing behaviors of flexible MOFs membranes under external strain. More MOFs-based flexible sensors may be developed to explore different properties of MOFs by varying their compositions and structures for healthcare and clinic applications.
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Affiliation(s)
- Wei Ling
- Department of Biomedical Engineering, Tianjin University, 92 Weijin Road, Tianjin 300072, People's Republic of China
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Hong XJ, Tan TX, Guo YK, Tang XY, Wang JY, Qin W, Cai YP. Confinement of polysulfides within bi-functional metal-organic frameworks for high performance lithium-sulfur batteries. NANOSCALE 2018; 10:2774-2780. [PMID: 29323375 DOI: 10.1039/c7nr07118c] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
A lithium-sulfur (Li-S) battery is regarded as the most promising candidate for next generation energy storage systems, because of its high theoretical specific capacity (1675 mA h g-1) and specific energy (2500 W h kg-1), as well as the abundance, low cost and environmental benignity of sulfur. However, the soluble polysulfides Li2Sx (4 ≤ x ≤ 8) produced during the discharge process can cause the so-called "shuttle effect" and lead to low coulombic efficiency and rapid capacity fading of the batteries, which seriously restrict their practical application. Using porous materials as hosts to immobilize the polysulfides is proved to be an effective strategy. In this article, a dual functional cage-like metal-organic framework (Cu-MOF), Cu-TDPAT, combining the Lewis basic sites from the nitrogen atoms of the ligand H6TDPAT with the Lewis acidic sites from Cu(ii) open metal sites (OMSs), was employed as the sulfur host in a Li-S battery for lithium ions and polysulfide anions (Sx2-). In addition, the size of nano-Cu-TDPAT was also optimized by microwave synthesis to reduce the internal resistance of the batteries. The electrochemical test results showed that the optimized Cu-TDPAT material can efficiently confine the polysulfides within the MOF, and the resultant porous S@Cu-TDPAT composite cathode material with the size of 100 nm shows good cycling performance with a reversible capacity of about 745 mA h g-1 at 1C (1C = 1675 mA g-1) after 500 cycles, to the best of our knowledge, which is higher than those of all reported S@MOF cathode materials. The DFT calculation and XPS data indicate that the good cycling performance mainly results from the dual functional binding sites (that is, Lewis acid and base sites) in nanoporous Cu-TDPAT, providing the comprehensive and robust interaction with the polysulfides to overcome their dissolution and diffusion into the electrolyte. Clearly, our work provides a good example of designing MOFs with suitable interaction sites for the polysulfides to achieve S@MOF cathode materials with excellent cycling performance by multiple synergistic effects between nanoporous host MOFs and the polysulfides.
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Affiliation(s)
- Xu-Jia Hong
- School of Chemistry and Environment, South China Normal University, Guangzhou, 510006, P. R. China.
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Lee MH, Kim TH, Hwang C, Kim J, Song HK. A surface-reactive high-modulus binder for the reversible conversion reaction of nanoparticular cobalt oxide. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2016.12.082] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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8
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Yayapao O, Phuruangrat A, Thongtem T, Thongtem S. Synthesis, characterization and electrochemical properties of α-MoO3 nanobelts for Li-ion batteries. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2016. [DOI: 10.1134/s0036024416060170] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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9
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Bock DC, Pelliccione CJ, Zhang W, Wang J, Knehr KW, Wang J, Wang F, West AC, Marschilok AC, Takeuchi KJ, Takeuchi ES. Dispersion of Nanocrystalline Fe3O4 within Composite Electrodes: Insights on Battery-Related Electrochemistry. ACS APPLIED MATERIALS & INTERFACES 2016; 8:11418-11430. [PMID: 27096464 DOI: 10.1021/acsami.6b01134] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Aggregation of nanosized materials in composite lithium-ion-battery electrodes can be a significant factor influencing electrochemical behavior. In this study, aggregation was controlled in magnetite, Fe3O4, composite electrodes via oleic acid capping and subsequent dispersion in a carbon black matrix. A heat treatment process was effective in the removal of the oleic acid capping agent while preserving a high degree of Fe3O4 dispersion. Electrochemical testing showed that Fe3O4 dispersion is initially beneficial in delivering a higher functional capacity, in agreement with continuum model simulations. However, increased capacity fade upon extended cycling was observed for the dispersed Fe3O4 composites relative to the aggregated Fe3O4 composites. X-ray absorption spectroscopy measurements of electrodes post cycling indicated that the dispersed Fe3O4 electrodes are more oxidized in the discharged state, consistent with reduced reversibility compared with the aggregated sample. Higher charge-transfer resistance for the dispersed sample after cycling suggests increased surface-film formation on the dispersed, high-surface-area nanocrystalline Fe3O4 compared to the aggregated materials. This study provides insight into the specific effects of aggregation on electrochemistry through a multiscale view of mechanisms for magnetite composite electrodes.
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Affiliation(s)
- David C Bock
- Brookhaven National Laboratory , Upton, New York 11973, United States
| | | | - Wei Zhang
- Brookhaven National Laboratory , Upton, New York 11973, United States
| | - Jiajun Wang
- Brookhaven National Laboratory , Upton, New York 11973, United States
| | - K W Knehr
- Department of Chemical Engineering, Columbia University , New York, New York 10027, United States
| | - Jun Wang
- Brookhaven National Laboratory , Upton, New York 11973, United States
| | - Feng Wang
- Brookhaven National Laboratory , Upton, New York 11973, United States
| | - Alan C West
- Department of Chemical Engineering, Columbia University , New York, New York 10027, United States
| | | | | | - Esther S Takeuchi
- Brookhaven National Laboratory , Upton, New York 11973, United States
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Facile Synthesis of Mesoporous Co3O4–Carbon Nanowires Array Nanocomposite for the Enhanced Lithium Storage. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2015.12.204] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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11
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Shilpa S, Rai P, Sharma A. Li-ion storage in morphology tailored porous hollow Cu2O nanospheres fabricated by Ostwald ripening. RSC Adv 2016. [DOI: 10.1039/c6ra22839a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In this work, morphology of Cu2O is tuned from solid to hollow nanospheres and their effect on Li storage is investigated.
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Affiliation(s)
- Shilpa Shilpa
- Department of Chemical Engineering
- Indian Institute of Technology Kanpur
- Kanpur 208016
- India
| | - Prabhakar Rai
- Department of Chemical Engineering
- Indian Institute of Technology Kanpur
- Kanpur 208016
- India
| | - Ashutosh Sharma
- Department of Chemical Engineering
- Indian Institute of Technology Kanpur
- Kanpur 208016
- India
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12
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Sun S, Zhao X, Yang M, Ma L, Shen X. Facile and Eco-Friendly Synthesis of Finger-Like Co₃O₄ Nanorods for Electrochemical Energy Storage. NANOMATERIALS 2015; 5:2335-2347. [PMID: 28347124 PMCID: PMC5304806 DOI: 10.3390/nano5042335] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Revised: 12/02/2015] [Accepted: 12/14/2015] [Indexed: 11/28/2022]
Abstract
Co3O4 nanorods were prepared by a facile hydrothermal method. Eco-friendly deionized water rather than organic solvent was used as the hydrothermal media. The as-prepared Co3O4 nanorods are composed of many nanoparticles of 30–50 nm in diameter, forming a finger-like morphology. The Co3O4 electrode shows a specific capacitance of 265 F g−1 at 2 mV s−1 in a supercapacitor and delivers an initial specific discharge capacity as high as 1171 mAh g−1 at a current density of 50 mA g−1 in a lithium ion battery. Excellent cycling stability and electrochemical reversibility of the Co3O4 electrode were also obtained.
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Affiliation(s)
- Shijiao Sun
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 210009, China.
| | - Xiangyu Zhao
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 210009, China.
| | - Meng Yang
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 210009, China.
| | - Liqun Ma
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 210009, China.
| | - Xiaodong Shen
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 210009, China.
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An Effective Way to Optimize the Functionality of Graphene-Based Nanocomposite: Use of the Colloidal Mixture of Graphene and Inorganic Nanosheets. Sci Rep 2015; 5:11057. [PMID: 26053331 PMCID: PMC5377538 DOI: 10.1038/srep11057] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2015] [Accepted: 05/11/2015] [Indexed: 11/08/2022] Open
Abstract
The best electrode performance of metal oxide-graphene nanocomposite material for lithium secondary batteries can be achieved by using the colloidal mixture of layered CoO2 and graphene nanosheets as a precursor. The intervention of layered CoO2 nanosheets in-between graphene nanosheets is fairly effective in optimizing the pore and composite structures of the Co3O4-graphene nanocomposite and also in enhancing its electrochemical activity via the depression of interaction between graphene nanosheets. The resulting CoO2 nanosheet-incorporated nanocomposites show much greater discharge capacity of ~1750 mAhg(-1) with better cyclability and rate characteristics than does CoO2-free Co3O4-graphene nanocomposite (~1100 mAhg(-1)). The huge discharge capacity of the present nanocomposite is the largest one among the reported data of cobalt oxide-graphene nanocomposite. Such a remarkable enhancement of electrode performance upon the addition of inorganic nanosheet is also observed for Mn3O4-graphene nanocomposite. The improvement of electrode performance upon the incorporation of inorganic nanosheet is attributable to an improved Li(+) ion diffusion, an enhanced mixing between metal oxide and graphene, and the prevention of electrode agglomeration. The present experimental findings underscore an efficient and universal role of the colloidal mixture of graphene and redoxable metal oxide nanosheets as a precursor for improving the electrode functionality of graphene-based nanocomposites.
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Qiu S, Gu H, Lu G, Liu J, Li X, Fu Y, Yan X, Hu C, Guo Z. Rechargeable Co3O4 porous nanoflake carbon nanotube nanocomposite lithium-ion battery anodes with enhanced energy performances. RSC Adv 2015. [DOI: 10.1039/c5ra06642e] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Multi-walled carbon nanotube nanocomposites intertwined with porous Co3O4 nanoflakes serve as lithium-ion battery anode materials with enhanced performances.
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Affiliation(s)
- Song Qiu
- Key Laboratory for Liquid–Solid Structural Evolution and Processing of Materials
- Ministry of Education and School of Materials Science and Engineering
- Shandong University
- Jinan
- People's Republic of China
| | - Hongbo Gu
- Department of Chemistry
- Tongji University
- Shanghai
- China
| | - Guixia Lu
- Key Laboratory for Liquid–Solid Structural Evolution and Processing of Materials
- Ministry of Education and School of Materials Science and Engineering
- Shandong University
- Jinan
- People's Republic of China
| | - Jiurong Liu
- Key Laboratory for Liquid–Solid Structural Evolution and Processing of Materials
- Ministry of Education and School of Materials Science and Engineering
- Shandong University
- Jinan
- People's Republic of China
| | - Xiaoyu Li
- Key Laboratory for Liquid–Solid Structural Evolution and Processing of Materials
- Ministry of Education and School of Materials Science and Engineering
- Shandong University
- Jinan
- People's Republic of China
| | - Ya Fu
- Key Laboratory for Liquid–Solid Structural Evolution and Processing of Materials
- Ministry of Education and School of Materials Science and Engineering
- Shandong University
- Jinan
- People's Republic of China
| | - Xingru Yan
- Integrated Composites Lab (ICL)
- Department of Chemical & Biomolecular Engineering
- University of Tennessee
- Knoxville
- USA
| | - Chenxi Hu
- Key Laboratory for Liquid–Solid Structural Evolution and Processing of Materials
- Ministry of Education and School of Materials Science and Engineering
- Shandong University
- Jinan
- People's Republic of China
| | - Zhanhu Guo
- Integrated Composites Lab (ICL)
- Department of Chemical & Biomolecular Engineering
- University of Tennessee
- Knoxville
- USA
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Qiu S, Lu G, Liu J, Lyu H, Hu C, Li B, Yan X, Guo J, Guo Z. Enhanced electrochemical performances of MoO2 nanoparticles composited with carbon nanotubes for lithium-ion battery anodes. RSC Adv 2015. [DOI: 10.1039/c5ra17147d] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Lab-made CNT nanocomposites decorated with MoO2 nanoparticles (MoO2/CNTs) demonstrated superior cycling and rate performances as LIB anode materials.
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Affiliation(s)
- Song Qiu
- Key Laboratory for Liquid–Solid Structural Evolution and Processing of Materials
- Ministry of Education and School of Materials Science and Engineering
- Shandong University
- Jinan
- People's Republic of China
| | - Guixia Lu
- Key Laboratory for Liquid–Solid Structural Evolution and Processing of Materials
- Ministry of Education and School of Materials Science and Engineering
- Shandong University
- Jinan
- People's Republic of China
| | - Jiurong Liu
- Key Laboratory for Liquid–Solid Structural Evolution and Processing of Materials
- Ministry of Education and School of Materials Science and Engineering
- Shandong University
- Jinan
- People's Republic of China
| | - Hailong Lyu
- Key Laboratory for Liquid–Solid Structural Evolution and Processing of Materials
- Ministry of Education and School of Materials Science and Engineering
- Shandong University
- Jinan
- People's Republic of China
| | - Chenxi Hu
- Key Laboratory for Liquid–Solid Structural Evolution and Processing of Materials
- Ministry of Education and School of Materials Science and Engineering
- Shandong University
- Jinan
- People's Republic of China
| | - Bo Li
- State Key Laboratory of Crystal Materials
- Shandong University
- Jinan 250100
- China
| | - Xingru Yan
- Integrated Composites Laboratory (ICL)
- Department of Chemical & Biomolecular Engineering
- University of Tennessee
- Knoxville
- United States
| | - Jiang Guo
- Integrated Composites Laboratory (ICL)
- Department of Chemical & Biomolecular Engineering
- University of Tennessee
- Knoxville
- United States
| | - Zhanhu Guo
- Integrated Composites Laboratory (ICL)
- Department of Chemical & Biomolecular Engineering
- University of Tennessee
- Knoxville
- United States
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16
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Ju HS, Cho JS, Kim JH, Choi YJ, Kang YC. Synthesis of hollow cobalt oxide nanopowders by a salt-assisted spray pyrolysis process applying nanoscale Kirkendall diffusion and their electrochemical properties. Phys Chem Chem Phys 2015; 17:31988-94. [DOI: 10.1039/c5cp06206c] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new concept for preparing hollow metal oxide nanopowders by salt-assisted spray pyrolysis applying nanoscale Kirkendall diffusion is introduced.
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Affiliation(s)
- Hyeon Seok Ju
- Department of Materials Science and Engineering
- Korea University
- Anam-dong
- Seoul 136-713
- Korea
| | - Jung Sang Cho
- Department of Materials Science and Engineering
- Korea University
- Anam-dong
- Seoul 136-713
- Korea
| | - Jong Hwa Kim
- Daegu Center
- Korea Basic Science Institute
- Daegu 702-701
- Republic of Korea
| | - Yun Ju Choi
- Suncheon Center
- Korea Basic Science Institute
- Suncheon 540-742
- Republic of Korea
| | - Yun Chan Kang
- Department of Materials Science and Engineering
- Korea University
- Anam-dong
- Seoul 136-713
- Korea
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17
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Kim JH, Kang YC. Electrochemical properties of micron-sized, spherical, meso- and macro-porous Co3O4 and CoO-carbon composite powders prepared by a two-step spray drying process. NANOSCALE 2014; 6:4789-4795. [PMID: 24664313 DOI: 10.1039/c3nr06651g] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Micron-sized, spherical, meso- and macro-porous Co3O4 and CoO-carbon composite powders were prepared via a simple two-step spray drying process. The CoO-carbon composite powders, in which homogeneous mixing of the metal oxide and carbon components was achieved using the first spray drying process, were wet milled to produce the slurry for the second spray drying process. Co3O4 and CoO-carbon composite powders with mean particle sizes of 4.4 and 4.7 μm were respectively obtained by spray-drying the slurry after post-treatment at 400 °C under air and nitrogen atmospheres. Meso- and macro-pores were uniformly distributed inside the Co3O4 and CoO-carbon composite powders. The CoO-carbon composite powders exhibited discharge capacities of 882 and 855 mA h g(-1) at a high constant current density of 1400 mA g(-1) for the 2(nd) and 100(th) cycles. The discharge capacities of the Co3O4 powders at the 2(nd) and 100(th) cycles were 970 and 644 mA h g(-1). With stepwise increment in the current density from 500 to 5000 mA g(-1), the discharge capacities of the CoO-carbon composite powders decreased slightly from 985 to 698 mA h g(-1). The superior rate and cycling performances of the CoO-carbon composite powders are ascribed to their meso- and macro-porous structures and carbon components.
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Affiliation(s)
- Jung Hyun Kim
- Department of Chemical Engineering, Konkuk University, 1 Hwayang-dong, Gwangjin-gu, Seoul 143-701, Korea.
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18
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Reddy MV, Prithvi G, Loh KP, Chowdari BVR. Li storage and impedance spectroscopy studies on Co3O4, CoO, and CoN for Li-ion batteries. ACS APPLIED MATERIALS & INTERFACES 2014; 6:680-690. [PMID: 24325322 DOI: 10.1021/am4047552] [Citation(s) in RCA: 82] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The compounds, CoN, CoO, and Co3O4 were prepared in the form of nano-rod/particles and we investigated the Li-cycling properties, and their use as an anode material. The urea combustion method, nitridation, and carbothermal reduction methods were adopted to prepare Co3O4, CoN, and CoO, respectively. X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), and the Brunauer-Emmett-Teller (BET) surface and density methods were used to characterise the materials. Cyclic voltammetry (CV) was performed and galvanostatic cycling tests were also conducted up to 60-70 cycles. The observed reversible capacity of all compounds is of the increasing order CoO, Co3O4, CoN and all compounds showed negligible capacity fading. CoO allows for Li2O and Co metal to form during the discharge cycle, allowing for a high theoretical capacity of 715 mA h g(-1). Co3O4 allows for 4 Li2O and 3Co to form, and has a theoretical capacity of 890 mAhg(-1). CoN is the best anode material of the three because the nitrogen allows for Li3N and Co to form, resulting in an even higher theoretical capacity of 1100 mAhg(-1) due to the Li3N and Co metal formation. Irrespective of morphology the charge profiles of all three compounds showed a major plateaux ~2.0 V vs. Li and potential values are almost unchanged irrespective of crystal structure. Electrochemical impedance spectroscopy (EIS) was performed to understand variation resistance and capacitance values.
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Affiliation(s)
- M V Reddy
- Department of Physics, Solid State Ionics & Advanced Batteries Lab, §Department of Chemistry, Graphene Research Center, and ⊥Departments of Materials Science & Engineering, National University of Singapore , Singapore 117542
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19
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Cheng C, Zhou G, Du J, Zhang H, Guo D, Li Q, Wei W, Chen L. Hierarchical porous Co3O4 nanosheet arrays directly grown on carbon cloth by an electrochemical route for high performance Li-ion batteries. NEW J CHEM 2014. [DOI: 10.1039/c3nj01642k] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Co3O4 nanosheet arrays were grown on carbon cloth homogeneously; excellent electrochemical performance was obtained due to the unique structure and morphology.
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Affiliation(s)
- Chao Cheng
- Key Laboratory for Micro-Nano Optoelectronic Devices of Ministry of Education
- and State Key Laboratory for Chemo/Biosensing and Chemometrics
- Hunan University
- Changsha 410082, China
| | - Gang Zhou
- Key Laboratory for Micro-Nano Optoelectronic Devices of Ministry of Education
- and State Key Laboratory for Chemo/Biosensing and Chemometrics
- Hunan University
- Changsha 410082, China
| | - Jun Du
- Key Laboratory for Micro-Nano Optoelectronic Devices of Ministry of Education
- and State Key Laboratory for Chemo/Biosensing and Chemometrics
- Hunan University
- Changsha 410082, China
| | - Haiming Zhang
- Key Laboratory for Micro-Nano Optoelectronic Devices of Ministry of Education
- and State Key Laboratory for Chemo/Biosensing and Chemometrics
- Hunan University
- Changsha 410082, China
| | - Di Guo
- Key Laboratory for Micro-Nano Optoelectronic Devices of Ministry of Education
- and State Key Laboratory for Chemo/Biosensing and Chemometrics
- Hunan University
- Changsha 410082, China
| | - Qiuhong Li
- Key Laboratory for Micro-Nano Optoelectronic Devices of Ministry of Education
- and State Key Laboratory for Chemo/Biosensing and Chemometrics
- Hunan University
- Changsha 410082, China
| | - Weifeng Wei
- State Key Laboratory for Powder Metallurgy
- Central South University
- Changsha 410083, China
| | - Libao Chen
- Key Laboratory for Micro-Nano Optoelectronic Devices of Ministry of Education
- and State Key Laboratory for Chemo/Biosensing and Chemometrics
- Hunan University
- Changsha 410082, China
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20
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Study of Co3O4 mesoporous nanosheets prepared by a simple spray-drying process and their electrochemical properties as anode material for lithium secondary batteries. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2013.10.217] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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21
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Xiao Y, Li X, Zai J, Wang K, Gong Y, Li B, Han Q, Qian X. CoFe 2O 4-Graphene Nanocomposites Synthesized through An Ultrasonic Method with Enhanced Performances as Anode Materials for Li-ion Batteries. NANO-MICRO LETTERS 2014; 6:307-315. [PMID: 30464941 PMCID: PMC6223971 DOI: 10.1007/s40820-014-0003-7] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2014] [Revised: 05/16/2014] [Accepted: 05/19/2014] [Indexed: 05/11/2023]
Abstract
CoFe2O4-graphene nanocomposites (CoFe2O4-GNSs) have been synthesized through an ultrasonic method combined with calcination process. The nanocomposite calcinated at 350 °C shows better rate capabilities, e.g., 696, 495, 308, and 254 mAh g-1 at 1, 2, 5, and 10 A g-1, respectively.
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Affiliation(s)
- Yinglin Xiao
- School of Chemistry and Chemical Engineering and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai, 200240 People’s Republic of China
| | - Xiaomin Li
- School of Chemistry and Chemical Engineering and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai, 200240 People’s Republic of China
| | - Jiantao Zai
- School of Chemistry and Chemical Engineering and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai, 200240 People’s Republic of China
| | - Kaixue Wang
- School of Chemistry and Chemical Engineering and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai, 200240 People’s Republic of China
| | - Yong Gong
- School of Chemistry and Chemical Engineering and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai, 200240 People’s Republic of China
| | - Bo Li
- School of Chemistry and Chemical Engineering and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai, 200240 People’s Republic of China
| | - Qianyan Han
- School of Chemistry and Chemical Engineering and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai, 200240 People’s Republic of China
| | - Xuefeng Qian
- School of Chemistry and Chemical Engineering and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai, 200240 People’s Republic of China
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22
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Kim GP, Nam I, Park S, Park J, Yi J. Preparation via an electrochemical method of graphene films coated on both sides with NiO nanoparticles for use as high-performance lithium ion anodes. NANOTECHNOLOGY 2013; 24:475402. [PMID: 24192337 DOI: 10.1088/0957-4484/24/47/475402] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
We report on a simple strategy for the direct synthesis of a thin film comprising interconnected NiO nanoparticles deposited on both sides of a graphene sheet via cathodic deposition. For the co-electrodeposition, graphene oxide (GO) is treated with water-soluble cationic poly(ethyleneimine) (PEI) which acts as a stabilizer and trapping agent to form complexes of GO and Ni2+. The positively charged complexes migrate toward the stainless steel substrate, resulting in the electrochemical deposition of PEI-modified GO/Ni(OH)2 at the electrode surface under an applied electric field. The as-synthesized film is then converted to graphene/NiO after annealing at 350 ° C. The interconnected NiO nanoparticles are uniformly deposited on both sides of the graphene surface, as evidenced by field emission scanning electron microscopy, transmission electron microscopy and energy dispersive spectrometry. This graphene/NiO structure shows enhanced electrochemical performance with a large reversible capacity, good cyclic performance and improved electronic conductivity as an anode material for lithium ion batteries. A reversible capacity is retained above 586 mA h g−1 after 50 cycles. The findings reported herein suggest that this strategy can be effectively used to overcome a bottleneck problem associated with the electrochemical production of graphene/metal oxide films for lithium ion battery anodes.
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23
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Xiao Y, Zai J, Tao L, Li B, Han Q, Yu C, Qian X. MnFe2O4-graphene nanocomposites with enhanced performances as anode materials for Li-ion batteries. Phys Chem Chem Phys 2013; 15:3939-45. [PMID: 23403797 DOI: 10.1039/c3cp50220a] [Citation(s) in RCA: 110] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
MnFe(2)O(4)-graphene nanocomposites (MnFe(2)O(4)-GNSs) with enhanced electrochemical performances have been successfully prepared through an ultrasonic method, e.g., approximate 1017 mA h g(-1) and 767 mA h g(-1) reversible capacities are retained even after 90 cycles at a current density of 0.1 A g(-1) and 1 A g(-1), respectively. The remarkable improvement in the reversible capacity, cyclic stability and rate capability of the obtained MnFe(2)O(4)-GNSs nanocomposites can be attributed to the good electrical conductivity and special structure of the graphene nanosheets. On the other hand, MnFe(2)O(4) also plays an important role because it transforms into a nanosized hybrid of Fe(3)O(4)-MnO with a particle size of about 20 nm during discharge-charge process, and the in situ formed hybrid of Fe(3)O(4)-MnO can be combined with GNSs to form a spongy porous structure. Furthermore, the formed hybrid can also act as the matrix of MnO or Fe(3)O(4) to prevent the aggregation of Fe(3)O(4) or MnO, and accommodate the volume change of the active materials during the discharge-charge processes, which is also beneficial to improve the electrochemical performances of the MnFe(2)O(4)-GNSs nanocomposites.
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Affiliation(s)
- Yinglin Xiao
- School of Chemistry and Chemical Technology, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
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24
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Shim H, Lim A, Kim J, Lee G, Kim D. Hydrothermal Realization of a Hierarchical, Flowerlike MnWO
4
@MWCNTs Nanocomposite with Enhanced Reversible Li Storage as a New Anode Material. Chem Asian J 2013; 8:2851-8. [DOI: 10.1002/asia.201300765] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2013] [Indexed: 11/08/2022]
Affiliation(s)
- Hyun‐Woo Shim
- Department of Energy Systems Research, Ajou University, 206, World cup‐ro, Yeongtong‐gu, Suwon‐si 443‐749 (Republic of Korea), Fax: (+82) 31‐219‐3248
| | - Ah‐Hyeon Lim
- Department of Energy Systems Research, Ajou University, 206, World cup‐ro, Yeongtong‐gu, Suwon‐si 443‐749 (Republic of Korea), Fax: (+82) 31‐219‐3248
| | - Jae‐Chan Kim
- Department of Energy Systems Research, Ajou University, 206, World cup‐ro, Yeongtong‐gu, Suwon‐si 443‐749 (Republic of Korea), Fax: (+82) 31‐219‐3248
| | - Gwang‐Hee Lee
- Department of Energy Systems Research, Ajou University, 206, World cup‐ro, Yeongtong‐gu, Suwon‐si 443‐749 (Republic of Korea), Fax: (+82) 31‐219‐3248
| | - Dong‐Wan Kim
- Department of Energy Systems Research, Ajou University, 206, World cup‐ro, Yeongtong‐gu, Suwon‐si 443‐749 (Republic of Korea), Fax: (+82) 31‐219‐3248
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25
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Paolella A, Brescia R, Prato M, Povia M, Marras S, De Trizio L, Falqui A, Manna L, George C. Colloidal synthesis of cuprite (Cu2O) octahedral nanocrystals and their electrochemical lithiation. ACS APPLIED MATERIALS & INTERFACES 2013; 5:2745-2751. [PMID: 23465697 DOI: 10.1021/am4004073] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
We report a facile colloidal route to prepare octahedral-shaped cuprite (Cu2O) nanocrystals (NCs) of ∼40 nm in size that exploits a new reduction pathway, i.e., the controlled reduction of a cupric ion by acetylacetonate directly to cuprite. Detailed structural, morphological, and chemical analyses were carried on the cuprite NCs. We also tested their electrochemical lithiation, using a combination of techniques (cyclic voltammetry, galvanostatic, and impedance spectroscopy), in view of their potential application as anodes for Li ion batteries. Along with these characterizations, the morphological, structural, and chemical analyses (via high-resolution electron microscopy, electron energy loss spectroscopy, and X-ray photoelectron spectroscopy) of the cycled Cu2O NCs (in the lithiated stage, after ∼50 cycles) demonstrate their partial conversion upon cycling. At this stage, most of the NCs had lost their octahedral shape and had evolved into multidomain particles and were eventually fragmented. Overall, the shape changes (upon cycling) did not appear to be concerted for all the NCs in the sample, suggesting that different subsets of NCs were characterized by different lithiation kinetics. We emphasize that a profound understanding of the lithiation reaction with NCs defined by a specific crystal habit is still essential to optimize nanoscale conversion reactions.
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Affiliation(s)
- Andrea Paolella
- Nanochemistry, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
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26
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Son MY, Hong YJ, Kang YC. Superior electrochemical properties of Co3O4 yolk–shell powders with a filled core and multishells prepared by a one-pot spray pyrolysis. Chem Commun (Camb) 2013; 49:5678-80. [DOI: 10.1039/c3cc42117a] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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27
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Zhu YG, Xie J, Cao GS, Zhu TJ, Zhao XB. Facile synthesis of C–Fe3O4–C core–shell nanotubes by a self-templating route and the application as a high-performance anode for Li-ion batteries. RSC Adv 2013. [DOI: 10.1039/c3ra22350g] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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28
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Ang WA, Gupta N, Prasanth R, Madhavi S. High-performing mesoporous iron oxalate anodes for lithium-ion batteries. ACS APPLIED MATERIALS & INTERFACES 2012; 4:7011-7019. [PMID: 23163539 DOI: 10.1021/am3022653] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Mesoporous iron oxalate (FeC(2)O(4)) with two distinct morphologies, i.e., cocoon and rod, has been synthesized via a simple, scalable chimie douce precipitation method. The solvent plays a key role in determining the morphology and microstructure of iron oxalate, which are studied by field-emission scanning electron microscopy and high-resolution transmission electron microscopy. Crystallographic characterization of the materials has been carried out by X-ray diffraction and confirmed phase-pure FeC(2)O(4)·2H(2)O formation. The critical dehydration process of FeC(2)O(4)·2H(2)O resulted in anhydrous FeC(2)O(4), and its thermal properties are studied by thermogravimetric analysis. The electrochemical properties of anhydrous FeC(2)O(4) in Li/FeC(2)O(4) cells are evaluated by cyclic voltammetry, galvanostatic charge-discharge cycling, and electrochemical impedance spectroscopy. The studies showed that the initial discharge capacities of anhydrous FeC(2)O(4) cocoons and rods are 1288 and 1326 mA h g(-1), respectively, at 1C rate. Anhydrous FeC(2)O(4) cocoons exhibited stable capacity even at high C rates (11C). The electrochemical performance of anhydrous FeC(2)O(4) is found to be greatly influenced by the number of accessible reaction sites, morphology, and size effects.
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Affiliation(s)
- Wei An Ang
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
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29
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Liu F, Song S, Xue D, Zhang H. Selective crystallization with preferred lithium-ion storage capability of inorganic materials. NANOSCALE RESEARCH LETTERS 2012; 7:149. [PMID: 22353373 PMCID: PMC3298540 DOI: 10.1186/1556-276x-7-149] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2011] [Accepted: 02/21/2012] [Indexed: 05/31/2023]
Abstract
Lithium-ion batteries are supposed to be a key method to make a more efficient use of energy. In the past decade, nanostructured electrode materials have been extensively studied and have presented the opportunity to achieve superior performance for the next-generation batteries which require higher energy and power densities and longer cycle life. In this article, we reviewed recent research activities on selective crystallization of inorganic materials into nanostructured electrodes for lithium-ion batteries and discuss how selective crystallization can improve the electrode performance of materials; for example, selective exposure of surfaces normal to the ionic diffusion paths can greatly enhance the ion conductivity of insertion-type materials; crystallization of alloying-type materials into nanowire arrays has proven to be a good solution to the electrode pulverization problem; and constructing conversion-type materials into hollow structures is an effective approach to buffer the volume variation during cycling. The major goal of this review is to demonstrate the importance of crystallization in energy storage applications.
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Affiliation(s)
- Fei Liu
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, 130022, People's Republic of China
- School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, People's Republic of China
| | - Shuyan Song
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, 130022, People's Republic of China
| | - Dongfeng Xue
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, 130022, People's Republic of China
- School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, People's Republic of China
| | - Hongjie Zhang
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, 130022, People's Republic of China
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30
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Lee HS, Choi J, Jin J, Chun J, Lee SM, Kim HJ, Son SU. An organometallic approach for microporous organic network (MON)–Co3O4composites: enhanced stability as anode materials for lithium ion batteries. Chem Commun (Camb) 2012; 48:94-6. [DOI: 10.1039/c1cc15535k] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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31
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Nam SH, Kim YS, Shim HS, Kim JG, Kim WB. Copper nanofiber-networked cobalt oxide composites for high performance Li-ion batteries. NANOSCALE RESEARCH LETTERS 2011; 6:292. [PMID: 21711839 PMCID: PMC3211358 DOI: 10.1186/1556-276x-6-292] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/27/2010] [Accepted: 04/05/2011] [Indexed: 05/31/2023]
Abstract
We prepared a composite electrode structure consisting of copper nanofiber-networked cobalt oxide (CuNFs@CoOx). The copper nanofibers (CuNFs) were fabricated on a substrate with formation of a network structure, which may have potential for improving electron percolation and retarding film deformation during the discharging/charging process over the electroactive cobalt oxide. Compared to bare CoOxthin-film (CoOxTF) electrodes, the CuNFs@CoOxelectrodes exhibited a significant enhancement of rate performance by at least six-fold at an input current density of 3C-rate. Such enhanced Li-ion storage performance may be associated with modified electrode structure at the nanoscale, improved charge transfer, and facile stress relaxation from the embedded CuNF network. Consequently, the CuNFs@CoOxcomposite structure demonstrated here can be used as a promising high-performance electrode for Li-ion batteries.
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Affiliation(s)
- Sang Hoon Nam
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), 261 Chemdan-gwagiro, Buk-gu, Gwangju 500-712, South Korea
| | - Yong Seok Kim
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), 261 Chemdan-gwagiro, Buk-gu, Gwangju 500-712, South Korea
| | - Hee-Sang Shim
- Research Institute for Solar and Sustainable Energies (RISE), Gwangju Institute of Science and Technology (GIST), 261 Chemdan-gwagiro, Buk-gu, Gwangju 500-712, South Korea
| | - Jong Guk Kim
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), 261 Chemdan-gwagiro, Buk-gu, Gwangju 500-712, South Korea
| | - Won Bae Kim
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), 261 Chemdan-gwagiro, Buk-gu, Gwangju 500-712, South Korea
- Research Institute for Solar and Sustainable Energies (RISE), Gwangju Institute of Science and Technology (GIST), 261 Chemdan-gwagiro, Buk-gu, Gwangju 500-712, South Korea
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Park KS, Seo SD, Jin YH, Lee SH, Shim HW, Lee DH, Kim DW. Synthesis of cuprous oxide nanocomposite electrodes by room-temperature chemical partial reduction. Dalton Trans 2011; 40:9498-503. [DOI: 10.1039/c1dt10842e] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Cabana J, Monconduit L, Larcher D, Palacín MR. Beyond intercalation-based Li-ion batteries: the state of the art and challenges of electrode materials reacting through conversion reactions. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2010; 22:E170-92. [PMID: 20730811 DOI: 10.1002/adma.201000717] [Citation(s) in RCA: 904] [Impact Index Per Article: 64.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Despite the imminent commercial introduction of Li-ion batteries in electric drive vehicles and their proposed use as enablers of smart grids based on renewable energy technologies, an intensive quest for new electrode materials that bring about improvements in energy density, cycle life, cost, and safety is still underway. This Progress Report highlights the recent developments and the future prospects of the use of phases that react through conversion reactions as both positive and negative electrode materials in Li-ion batteries. By moving beyond classical intercalation reactions, a variety of low cost compounds with gravimetric specific capacities that are two-to-five times larger than those attained with currently used materials, such as graphite and LiCoO(2), can be achieved. Nonetheless, several factors currently handicap the applicability of electrode materials entailing conversion reactions. These factors, together with the scientific breakthroughs that are necessary to fully assess the practicality of this concept, are reviewed in this report.
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Affiliation(s)
- Jordi Cabana
- Environmental Energy Technologies Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
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34
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Liu J, Xue D. Hollow Nanostructured Anode Materials for Li-Ion Batteries. NANOSCALE RESEARCH LETTERS 2010; 5:1525-34. [PMID: 21076674 PMCID: PMC2956050 DOI: 10.1007/s11671-010-9728-5] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2010] [Accepted: 08/02/2010] [Indexed: 05/25/2023]
Abstract
Hollow nanostructured anode materials lie at the heart of research relating to Li-ion batteries, which require high capacity, high rate capability, and high safety. The higher capacity and higher rate capability for hollow nanostructured anode materials than that for the bulk counterparts can be attributed to their higher surface area, shorter path length for Li(+) transport, and more freedom for volume change, which can reduce the overpotential and allow better reaction kinetics at the electrode surface. In this article, we review recent research activities on hollow nanostructured anode materials for Li-ion batteries, including carbon materials, metals, metal oxides, and their hybrid materials. The major goal of this review is to highlight some recent progresses in using these hollow nanomaterials as anode materials to develop Li-ion batteries with high capacity, high rate capability, and excellent cycling stability.
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Affiliation(s)
- Jun Liu
- State Key Laboratory of Fine Chemicals, Department of Materials Science and Chemical Engineering, School of Chemical Engineering, Dalian University of Technology, 116012, Dalian, China
| | - Dongfeng Xue
- State Key Laboratory of Fine Chemicals, Department of Materials Science and Chemical Engineering, School of Chemical Engineering, Dalian University of Technology, 116012, Dalian, China
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Lee GH, Park JG, Sung YM, Chung KY, Cho WI, Kim DW. Enhanced cycling performance of an Fe0/Fe3O4 nanocomposite electrode for lithium-ion batteries. NANOTECHNOLOGY 2009; 20:295205. [PMID: 19567958 DOI: 10.1088/0957-4484/20/29/295205] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
We demonstrate the formation of a highly conductive, Fe0/Fe3O4 nanocomposite electrode by the hydrogen reduction process. Fe2O3 nanobundles composed of one-dimensional nanowires were initially prepared through thermal dehydrogenation of hydrothermally synthesized FeOOH. The systematic phase and morphological evolutions from Fe2O3 to Fe2O3/Fe3O4, Fe3O4, and finally to Fe/Fe3O4 by the controlled thermochemical reduction at 300 degrees C in H2 were characterized using x-ray diffraction (XRD) and transmission electron microscopy (TEM). The Fe/Fe3O4 nanocomposite electrode shows excellent capacity retention ( approximately 540 mA h g(-1) after 100 cycles at a rate of 185 mA g(-1)), compared to that of Fe2O3 nanobundles. This enhanced electrochemical performance in Fe/Fe3O4 composites was attributed to the formation of unique, core-shell nanostructures offering an efficient electron transport path to the current collector.
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Affiliation(s)
- Gwang-Hee Lee
- Nano-Materials Research Center, Nano-Science Research Division, Korea Institute of Science and Technology, Seoul 136-791, Korea
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Liu Y, Zhang X. Effect of calcination temperature on the morphology and electrochemical properties of Co3O4 for lithium-ion battery. Electrochim Acta 2009. [DOI: 10.1016/j.electacta.2009.02.060] [Citation(s) in RCA: 83] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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