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Depijan M, Hantanasirisakul K, Pakawatpanurut P. Interfacial Engineering of Ti 3C 2T x MXene Electrode Using g-C 3N 4 Nanosheets for High-Performance Supercapacitor in Neutral Electrolyte. ACS OMEGA 2024; 9:22256-22264. [PMID: 38799366 PMCID: PMC11112722 DOI: 10.1021/acsomega.4c01353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2024] [Revised: 04/09/2024] [Accepted: 04/12/2024] [Indexed: 05/29/2024]
Abstract
The superior performance of the Ti3C2Tx (MXene)-based supercapacitor in acidic electrolytes has recently gained much interest in the energy storage community. Nevertheless, its performance in most neutral electrolytes is unfavorably low, plausibly due to limited ion diffusion between the MXene layers. Herein, protonated g-C3N4 (pg-C3N4) is incorporated into the Ti3C2Tx electrode by using a facile self-assembling process and annealing, which results in increased interlayer d-spacing and electrical conductivity of the composite electrode. As a result, the annealed Ti3C2Tx/pg-C3N4 film revealed an enhanced ion-accessibility and gravimetric capacitance of 140 F g-1 in 1 M aqueous MgSO4 electrolyte. The cyclic stability test also indicates excellent capacitance retention, with negligible loss of capacitance over 10000 cycles.
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Affiliation(s)
- Manopat Depijan
- Department
of Chemistry, Center of Excellence for Innovation in Chemistry, and
Center of Sustainable Energy and Green Materials, Faculty of Science, Mahidol University, 272 Rama VI Road, Ratchathewi, Bangkok 10400, Thailand
| | - Kanit Hantanasirisakul
- Centre
of Excellence for Energy Storage Technology (CEST), Department of
Chemical and Biomolecular Engineering, School of Energy Science and
Engineering, Vidyasirimedhi Institute of
Science and Technology, Wangchan Valley, Rayong 21210, Thailand
| | - Pasit Pakawatpanurut
- Department
of Chemistry, Center of Excellence for Innovation in Chemistry, and
Center of Sustainable Energy and Green Materials, Faculty of Science, Mahidol University, 272 Rama VI Road, Ratchathewi, Bangkok 10400, Thailand
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2
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Ren S, Pan X, Zhang Y, Xu J, Liu Z, Zhang X, Li X, Gao X, Zhong Y, Chen S, Wang SD. Conductive MXene/Polymer Composites for Transparent Flexible Supercapacitors. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2401346. [PMID: 38700047 DOI: 10.1002/smll.202401346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Revised: 04/09/2024] [Indexed: 05/05/2024]
Abstract
Transparent flexible energy storage devices are limited by the trade-off among flexibility, transparency, and charge storage capability of their electrode materials. Conductive polymers are intrinsically flexible, but limited by small capacitance. Pseudocapacitive MXene provides high capacitance, yet their opaque and brittle nature hinders their flexibility and transparency. Herein, the development of synergistically interacting conductive polymer Ti3C2Tx MXene/PEDOT:PSS composites is reported for transparent flexible all-solid-state supercapacitors, with an outstanding areal capacitance of 3.1 mF cm-2, a high optical transparency of 61.6%, and excellent flexibility and durability. The high capacitance and high transparency of the devices stem from the uniform and thorough blending of PEDOT:PSS and Ti3C2Tx, which is associated with the formation of O─H…O H-bonds in the composites. The conductive MXene/polymer composite electrodes demonstrate a rational means to achieve high-capacity, transparent and flexible supercapacitors in an easy and scalable manner.
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Affiliation(s)
- Shan Ren
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, Jiangsu, 215123, P. R. China
- Materials Interfaces Center, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong, 518055, P. R. China
| | - Xiangyu Pan
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, Jiangsu, 215123, P. R. China
| | - Yangyang Zhang
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, Jiangsu, 215123, P. R. China
| | - Jianlong Xu
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, Jiangsu, 215123, P. R. China
| | - Zhifang Liu
- School of Integrated Circuits and Electronics, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Xuanyi Zhang
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, Jiangsu, 215123, P. R. China
| | - Xian Li
- Agricultural Information Institute, Chinese Academy of Agricultural Sciences, Beijing, 100081, P. R. China
| | - Xu Gao
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, Jiangsu, 215123, P. R. China
| | - Yanan Zhong
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, Jiangsu, 215123, P. R. China
| | - Sheng Chen
- College of Biomass Science and Engineering, Sichuan University, Chengdu, Sichuan, 610065, P. R. China
| | - Sui-Dong Wang
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, Jiangsu, 215123, P. R. China
- Macao Institute of Materials Science and Engineering (MIMSE), MUST-SUDA Joint Research Center for Advanced Functional Materials, Macau University of Science and Technology, Taipa, Macao, 999078, P. R. China
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Mateen A, Suneetha M, Ahmad Shah SS, Usman M, Ahmad T, Hussain I, Khan S, Assiri MA, Hassan AM, Javed MS, Han SS, Althomali RH, Rahman MM. 2D MXenes Nanosheets for Advanced Energy Conversion and Storage Devices: Recent Advances and Future Prospects. CHEM REC 2024; 24:e202300235. [PMID: 37753795 DOI: 10.1002/tcr.202300235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 09/11/2023] [Indexed: 09/28/2023]
Abstract
Since the initial MXenes were discovered in 2011, several MXene compositions constructed using combinations of various transition metals have been developed. MXenes are ideal candidates for different applications in energy conversion and storage, because of their unique and interesting characteristics, which included good electrical conductivity, hydrophilicity, and simplicity of large-scale synthesis. Herein, we study the current developments in two-dimensional (2D) MXene nanosheets for energy storage and conversion technologies. First, we discuss the introduction to energy storage and conversion devices. Later, we emphasized on 2D MXenes and some specific properties of MXenes. Subsequently, research advances in MXene-based electrode materials for energy storage such as supercapacitors and rechargeable batteries is summarized. We provide the relevant energy storage processes, common challenges, and potential approaches to an acceptable solution for 2D MXene-based energy storage. In addition, recent advances for MXenes used in energy conversion devices like solar cells, fuel cells and catalysis is also summarized. Finally, the future prospective of growing MXene-based energy conversion and storage are highlighted.
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Affiliation(s)
- Abdul Mateen
- Department of Physics and Beijing Key Laboratory of Energy Conversion and Storage Materials, Beijing Normal University, Beijing, 100084, China
| | - Maduru Suneetha
- School of Chemical Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan, Gyeongbuk, 38541, South Korea
| | - Syed Shoaib Ahmad Shah
- Department of Chemistry, School of Natural Sciences, National University of Sciences and Technology, Islamabad, 44000, Pakistan
| | - Muhammad Usman
- Physics Department, Kaunas University of Technology, 50 Studentų St., 51368, Kaunas, Lithuania
| | - Tauqeer Ahmad
- Department of Physics Engineering, Faculty of Engineering, University of Porto, Rua dr. Roberto Frias, Porto, 4200-465, Portugal
| | - Iftikhar Hussain
- Department of Mechanical Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong
| | - Shaukat Khan
- Department of Chemical Engineering, College of Engineering, Dhofar University, Salalah, 211, Sultanate of, Oman
| | - Mohammed A Assiri
- Chemistry Department, Faculty of Science, King Khalid University, P.O. Box 9004, Abha, 61413, Saudi Arabia
| | - Ahmed M Hassan
- Faculty of Engineering and Technology, Future University in Egypt, New Cairo, 11835, Egypt
| | - Muhammad Sufyan Javed
- School of Physical Science and Technology, Lanzhou University, Lanzhou, 730000, China
| | - Sung Soo Han
- School of Chemical Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan, Gyeongbuk, 38541, South Korea
- Research Institute of Cell Culture, Yeungnam University, 280 Daehak-Ro, Gyeongsan, Gyeongbuk, 38541, South Korea
| | - Raed H Althomali
- Department of Chemistry, College of Art and Science, Prince Sattam bin Abdulaziz University, Wadi Al-Dawasir, 11991, Saudi Arabia
| | - Mohammed M Rahman
- Center of Excellence for Advanced Materials Research (CEAMR) & Department of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
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Zhang Y, Yuan Z, Zhao L, Li Y, Qin X, Li J, Han W, Wang L. Review of Design Routines of MXene Materials for Magnesium-Ion Energy Storage Device. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2301815. [PMID: 37183303 DOI: 10.1002/smll.202301815] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 03/31/2023] [Indexed: 05/16/2023]
Abstract
Renewable energy storage using electrochemical storage devices is extensively used in various field applications. High-power density supercapacitors and high-energy density rechargeable batteries are some of the most effective devices, while lithium-ion batteries (LIBs) are the most common. Due to the scarcity of Li resources and serious safety concerns during the construction of LIBs, development of safer and cheaper technologies with high performance is warranted. Magnesium is one of the most abundant and replaceable elements on earth, and it is safe as it does not generate dendrite following cycling. However, the lack of suitable electrode materials remains a critical issue in developing electrochemical energy storage devices. 2D MXenes can be used to construct composites with different dimensions, owing to their suitable physicochemical properties and unique magnesium-ion adsorption structure. In this study, the construction strategies of MXene in different dimensions, including its physicochemical properties as an electrode material in magnesium ion energy storage devices are reviewed. Research advancements of MXene and MXene-based composites in various kinds of magnesium-ion storage devices are also analyzed to understand its energy storage mechanisms. Finally, current opportunities, challenges, and future prospects are also briefly discussed to provide crucial information for future research.
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Affiliation(s)
- Yuming Zhang
- State Key Laboratory for Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, 100083, China
- Center of Materials Science and Optoelectronic Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
- Sino-Russian International Joint Laboratory for Clean Energy Conversion Technology, College of Physics, Jilin University, Changchun, 130012, China
| | - Zeyu Yuan
- Sino-Russian International Joint Laboratory for Clean Energy Conversion Technology, College of Physics, Jilin University, Changchun, 130012, China
| | - Lianjia Zhao
- Sino-Russian International Joint Laboratory for Clean Energy Conversion Technology, College of Physics, Jilin University, Changchun, 130012, China
| | - Yilin Li
- Sino-Russian International Joint Laboratory for Clean Energy Conversion Technology, College of Physics, Jilin University, Changchun, 130012, China
| | - Xiaokun Qin
- State Key Laboratory for Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, 100083, China
- Center of Materials Science and Optoelectronic Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Junzhi Li
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Wei Han
- Sino-Russian International Joint Laboratory for Clean Energy Conversion Technology, College of Physics, Jilin University, Changchun, 130012, China
| | - Lili Wang
- State Key Laboratory for Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, 100083, China
- Center of Materials Science and Optoelectronic Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
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5
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Xian Y, Wang B, Lin Z. Ti 3 C 2 T x MXene with High Pseudocapacitive Activity and Large Potential Window in a Mild AlCl 3 Aqueous Electrolyte. SMALL METHODS 2023; 7:e2201526. [PMID: 37052537 DOI: 10.1002/smtd.202201526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Revised: 12/19/2022] [Indexed: 06/19/2023]
Abstract
MXenes have been extensively explored as supercapacitor electrodes, especially in acidic aqueous electrolytes, where ultrahigh specific capacitance can be achieved; however, their narrow working potential window (≤ 1.0 V) limits the acquisition of high energy. Neutral and alkaline electrolytes can be used to extend the working potential window but MXenes in these electrolytes are less pseudocapacitive active, which leads to reduced charge storage. In this study, it is shown that Ti3 C2 Tx MXene in a mild AlCl3 aqueous electrolyte can operate at a wide potential range from 0 to -1.3 V versus Hg/Hg2 SO4 and retain high pseudocapacitive activity. Thus, a high capacity of up to 85 mAh g-1 is achieved, surpassing its performance in H2 SO4 electrolyte of 78 mAh g-1 . More interestingly, most of the capacity is released at a more negative potential range than that in acidic electrolytes, making it more suitable as a negative electrode material. In situ electrochemical quartz crystal microbalance results suggest that the high capacity originates from the pseudocapacitive intercalation/deintercalation of H+ instead of Al3+ , providing the possibility of coupling MXene anodes with proton redox active cathodes to achieve high-energy and high-power devices.
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Affiliation(s)
- Yongqiu Xian
- College of Materials Science and Engineering, Sichuan University, Chengdu, Sichuan, 610065, P. R. China
| | - Bin Wang
- College of Materials Science and Engineering, Sichuan University, Chengdu, Sichuan, 610065, P. R. China
| | - Zifeng Lin
- College of Materials Science and Engineering, Sichuan University, Chengdu, Sichuan, 610065, P. R. China
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Zhu Y, Ma J, Das P, Wang S, Wu ZS. High-Voltage MXene-Based Supercapacitors: Present Status and Future Perspectives. SMALL METHODS 2023; 7:e2201609. [PMID: 36703554 DOI: 10.1002/smtd.202201609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Revised: 12/30/2022] [Indexed: 06/18/2023]
Abstract
As an emerging class of 2D materials, MXene exhibits broad prospects in the field of supercapacitors (SCs). However, the working voltage of MXene-based SCs is relatively limited (typically ≤ 0.6 V) due to the oxidation of MXene electrode and the decomposition of electrolyte, ultimately leading to low energy density of the device. To solve this issue, high-voltage MXene-based electrodes and corresponding matchable electrolytes are developed urgently to extend the voltage window of MXene-based SCs. Herein, a comprehensive overview and systematic discussion regarding the effects of electrolytes (aqueous, organic, and ionic liquid electrolytes), asymmetric device configuration, and material modification on the operating voltage of MXene-based SCs, is presented. A deep dive is taken into the latest advances in electrolyte design, structure regulation, and high-voltage mechanism of MXene-based SCs. Last, the future perspectives on high-voltage MXene-based SCs and their possible development directions are outlined and discussed in depth, providing new insights for the rational design and realization of advanced next-generation MXene-based electrodes and high-voltage electrolytes.
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Affiliation(s)
- Yuanyuan Zhu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
- Key Laboratory of Spin Electron and Nanomaterials of Anhui Higher Education Institutes, Suzhou University, Suzhou, 234000, China
| | - Jiaxin Ma
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
- School of Chemical Sciences, University of Chinese Academy of Sciences, 19 A Yuquan Road, Shijingshan District, Beijing, 100049, China
| | - Pratteek Das
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Sen Wang
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Zhong-Shuai Wu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
- Dalian National Laboratory for Clean Energy, Chinese Academy of Sciences, Dalian, 116023, China
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Liu W, Li L, Shen G. A Ti 3C 2T x MXene cathode and redox-active electrolyte based flexible Zn-ion microsupercapacitor for integrated pressure sensing application. NANOSCALE 2023; 15:2624-2632. [PMID: 36688442 DOI: 10.1039/d2nr06626b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Frequently used aqueous electrolytes in MXene-based Zn-ion hybrid microsupercapacitors (MSCs) limit their cycling and rate stability. The use of metal and nonmetal additives in electrolytes for the performance improvement of Zn-ion MSCs is considered a valid method. Herein, we propose an additive assisted Zn(CF3SO3)2 electrolyte as a redox-active electrolyte to prepare a flexible MXene-based Zn-ion hybrid MSC by a facile spraying method, and it consists of a conductive Ti3C2Tx-LiCl current collector and a Ti3C2Tx-DMSO cathode. In the process of the current density change (from 5 A cm-3 to 30 A cm-3 and then to 5 A cm-3), the capacity retention of the as-fabricated MSC with K3Co(CN)6 additive is over 99.0%, which is higher than 96.7% for the MSC with CKNSe additive and 82.3% for the MSC without an additive. Moreover, the designed MSC with the redox-active K3Co(CN)6 electrolyte exhibits a maximal capacitance retention of 70% after 5000 cycles. Furthermore, the flexible Zn-ion MSC with the Ti3C2Tx MXene cathode and a redox-active electrolyte was used to power a Ti3C2Tx based pressure sensor; the excellent press response of the integrated system not only provides insights into the development of large capacity and long-period stable energy storage devices, but also paves a new way for the development of capacitor-sensor integrated systems.
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Affiliation(s)
- Weijia Liu
- School of Integrated Circuits and Electronics, Beijing Institute of Technology, Beijing 100081, China.
| | - La Li
- School of Integrated Circuits and Electronics, Beijing Institute of Technology, Beijing 100081, China.
| | - Guozhen Shen
- School of Integrated Circuits and Electronics, Beijing Institute of Technology, Beijing 100081, China.
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Shen J, Yang G, Duan G, Guo X, Li L, Cao B. NiFe-LDH/MXene nano-array hybrid architecture for exceptional capacitive lithium storage. Dalton Trans 2022; 51:18462-18472. [PMID: 36416750 DOI: 10.1039/d2dt03024a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Layered double hydroxides (LDHs) have great advantages in the domain of energy storage because of their exchangeable anions and large specific surface area. Nevertheless, the shortcomings of their poor electrical conductivity, easy stacking of nanosheets, and large volume variation in the cycling processes lead to unsatisfactory cycling stability and rate performance, which severely limits their further application. Therefore, we generated homogeneous nanoarrays of NiFe-LDH on the surface of Ti3C2Tx-MXene by a refluxing process. The resulting NiFe-LDH/MXene-500 hybrid material was applied as an anode of a lithium-ion battery (LIB) and exhibited a discharge capacity of 894.8 mA h g-1 at 200 mA g-1 (over 300 cycles) and could maintain a reversible capacity of 547.1 mA h g-1 even at 1 A g-1. With the addition of MXene, the volume increases of the NiFe-LDH/MXene hybrid materials were also significantly alleviated. The thickness of the NiFe-LDH/MXene-500 electrode only increased by 31% after 50 cycles, which was far better than the prepared NiFe-LDH electrode. On the hand, the synergistic interaction of NiFe-LDH and MXene could stabilize the structure, reduce the activation barrier of ion/electron diffusion, and promote electron transfer in the electrode. MXene with high conductivity can be used as electrical and ionic conductance media to promote the transformation reaction of NiFe-LDH. According to the detailed kinetic analysis, the capacitance control behavior is the main electrochemical reaction of NiFe-LDH/MXene electrodes.
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Affiliation(s)
- Jian Shen
- School of Materials Science and Engineering, University of Jinan, Jinan 250022, Shandong, China.
| | - Guangxu Yang
- School of Materials Science and Engineering, University of Jinan, Jinan 250022, Shandong, China.
| | - Guangbin Duan
- School of Materials Science and Engineering, University of Jinan, Jinan 250022, Shandong, China.
| | - Xi Guo
- School of Materials Science and Engineering, University of Jinan, Jinan 250022, Shandong, China.
| | - Li Li
- School of Materials Science and Engineering, University of Jinan, Jinan 250022, Shandong, China.
| | - Bingqiang Cao
- School of Materials Science and Engineering, University of Jinan, Jinan 250022, Shandong, China.
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Feng Q, Zhan Y, Yang W, Dong H, Sun A, Li L, Chen X, Chen Y. Ultra-high flux and synergistically enhanced anti-fouling Ag@MXene lamellar membrane for the fast purification of oily wastewater through nano-intercalation, photocatalytic self-cleaning and antibacterial effect. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121635] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Guo Z, Wang D, Wang Z, Gao Y, Liu J. A Free-Standing α-MoO3/MXene Composite Anode for High-Performance Lithium Storage. NANOMATERIALS 2022; 12:nano12091422. [PMID: 35564131 PMCID: PMC9104589 DOI: 10.3390/nano12091422] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 04/10/2022] [Accepted: 04/18/2022] [Indexed: 02/06/2023]
Abstract
Replacing the commercial graphite anode in Li-ion batteries with pseudocapacitor materials is an effective way to obtain high-performance energy storage devices. α-MoO3 is an attractive pseudocapacitor electrode material due to its theoretical capacity of 1117 mAh g−1. Nevertheless, its low conductivity greatly limits its electrochemical performance. MXene is often used as a 2D conductive substrate and flexible framework for the development of a non-binder electrode because of its unparalleled electronic conductivity and excellent mechanical flexibility. Herein, a free-standing α-MoO3/MXene composite anode with a high specific capacity and an outstanding rate capability was prepared using a green and simple method. The resultant α-MoO3/MXene composite electrode combines the advantages of each of the two components and possesses improved Li+ diffusion kinetics. In particular, this α-MoO3/MXene free-standing electrode exhibited a high Li+ storage capacity (1008 mAh g−1 at 0.1 A g−1) and an outstanding rate capability (172 mAh g−1 at 10 A g−1), as well as a much extended cycling stability (500 cycles at 0.5 A g−1). Furthermore, a full cell was fabricated using commercial LiFePO4 as the cathode, which displayed a high Li+ storage capacity of 160 mAh g−1 with an outstanding rate performance (48 mAh g−1 at 1 A g−1). We believe that our research reveals new possibilities for the development of an advanced free-standing electrode from pseudocapacitive materials for high-performance Li-ion storage.
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Defect-rich and highly porous carbon nanosheets derived from Ti3AlC2 MAX with good lithium storage properties. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.02.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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