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Cai D, Yang Z, Tong R, Huang H, Zhang C, Xia Y. Binder-Free MOF-Based and MOF-Derived Nanoarrays for Flexible Electrochemical Energy Storage: Progress and Perspectives. Small 2024; 20:e2305778. [PMID: 37948356 DOI: 10.1002/smll.202305778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 10/09/2023] [Indexed: 11/12/2023]
Abstract
The fast development of Internet of Things and the rapid advent of next-generation versatile wearable electronics require cost-effective and highly-efficient electroactive materials for flexible electrochemical energy storage devices. Among various electroactive materials, binder-free nanostructured arrays have attracted widespread attention. Featured with growing on a conductive and flexible substrate without using inactive and insulating binders, binder-free 3D nanoarray electrodes facilitate fast electron/ion transportation and rapid reaction kinetics with more exposed active sites, maintain structure integrity of electrodes even under bending or twisted conditions, readily release generated joule heat during charge/discharge cycles and achieve enhanced gravimetric capacity of the whole device. Binder-free metal-organic framework (MOF) nanoarrays and/or MOF-derived nanoarrays with high surface area and unique porous structure have emerged with great potential in energy storage field and been extensively exploited in recent years. In this review, common substrates used for binder-free nanoarrays are compared and discussed. Various MOF-based and MOF-derived nanoarrays, including metal oxides, sulfides, selenides, nitrides, phosphides and nitrogen-doped carbons, are surveyed and their electrochemical performance along with their applications in flexible energy storage are analyzed and overviewed. In addition, key technical issues and outlooks on future development of MOF-based and MOF-derived nanoarrays toward flexible energy storage are also offered.
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Affiliation(s)
- Dongming Cai
- Hubei Key Laboratory of Energy Storage and Power Battery, School of Mathematics, Physics and Optoelectronics Engineering, Hubei University of Automotive Technology, Shiyan, 442002, P. R. China
| | - Zhuxian Yang
- Department of Engineering, Faculty of Environment, Science and Economy, University of Exeter, Exeter, EX4 4QF, UK
| | - Rui Tong
- Hubei Key Laboratory of Energy Storage and Power Battery, School of Mathematics, Physics and Optoelectronics Engineering, Hubei University of Automotive Technology, Shiyan, 442002, P. R. China
| | - Haiming Huang
- Hubei Key Laboratory of Energy Storage and Power Battery, School of Mathematics, Physics and Optoelectronics Engineering, Hubei University of Automotive Technology, Shiyan, 442002, P. R. China
| | - Chuankun Zhang
- Hubei Key Laboratory of Energy Storage and Power Battery, School of Mathematics, Physics and Optoelectronics Engineering, Hubei University of Automotive Technology, Shiyan, 442002, P. R. China
| | - Yongde Xia
- Department of Engineering, Faculty of Environment, Science and Economy, University of Exeter, Exeter, EX4 4QF, UK
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2
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Jiang H, Cheng J, He J, Pu C, Huang X, Chen Y, Lu X, Lu Y, Zhang D, Wang Z, Leng Y, Chu PK, Luo Y. Cobalt-Nickel Layered Double Hydroxides on Electrospun MXene for Superior Asymmetric Supercapacitor Electrodes. ACS Omega 2023; 8:49017-49026. [PMID: 38162737 PMCID: PMC10753703 DOI: 10.1021/acsomega.3c06674] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 11/17/2023] [Accepted: 11/20/2023] [Indexed: 01/03/2024]
Abstract
Flexible electrodes for energy storage and conversion require a micro-nanomorphology and stable structure. Herein, MXene fibers (MX-CNF) are fabricated by electrospinning, and Co-MOF nanoarrays are prepared on the fibers to form Co-MOF@MX-CNF. Hydrolysis and etching of Co-MOF@MX-CNF in the Ni2+ solution produce cobalt-nickel layered double hydroxide (CoNi-LDH). The CoNi-LDH nanoarrays on the MX-CNF substrate have a large specific surface area and abundant electrochemical active sites, thus ensuring effective exposure of the CoNi-LDH active materials to the electrolyte and efficient pseudocapacitive energy storage and fast reversible redox kinetics for enhanced charging-discharging characteristics. The CoNi-LDH@MX-CNF electrode exhibits a discharge capacity of 996 F g-1 at a current density of 1 A g-1 as well as 78.62% capacitance retention after 3,000 cycles at 10 A g-1. The asymmetric supercapacitor (ASC) comprising the CoNi-LDH@MX-CNF positive electrode and negative activated carbon electrode shows an energy density of 48.4 Wh kg-1 at a power density of 499 W kg-1 and a capacity retention of 78.9% after 3,000 cycles at a current density of 10 A g-1. Density-functional theory calculations reveal the charge density difference and partial density of states of CoNi-LDH@MX-CNF confirming the large potential of the CoNi-LDH@MX-CNF electrode in energy storage applications.
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Affiliation(s)
- Hao Jiang
- Henan
International Joint Laboratory of MXene Materials Microstructure,
College of Physics and Electronic Engineering, Nanyang Normal University, Nanyang 473061, P. R. China
| | - Jinbing Cheng
- Henan
International Joint Laboratory of MXene Materials Microstructure,
College of Physics and Electronic Engineering, Nanyang Normal University, Nanyang 473061, P. R. China
| | - Junbao He
- Henan
International Joint Laboratory of MXene Materials Microstructure,
College of Physics and Electronic Engineering, Nanyang Normal University, Nanyang 473061, P. R. China
| | - Chunying Pu
- Henan
International Joint Laboratory of MXene Materials Microstructure,
College of Physics and Electronic Engineering, Nanyang Normal University, Nanyang 473061, P. R. China
| | - Xiaoyu Huang
- Henan
International Joint Laboratory of MXene Materials Microstructure,
College of Physics and Electronic Engineering, Nanyang Normal University, Nanyang 473061, P. R. China
| | - Yichong Chen
- Henan
International Joint Laboratory of MXene Materials Microstructure,
College of Physics and Electronic Engineering, Nanyang Normal University, Nanyang 473061, P. R. China
| | - Xiaohong Lu
- Henan
International Joint Laboratory of MXene Materials Microstructure,
College of Physics and Electronic Engineering, Nanyang Normal University, Nanyang 473061, P. R. China
| | - Yang Lu
- Key
Laboratory of Microelectronics and Energy of Henan Province, Engineering
Research Center for MXene Energy Storage Materials of Henan Province,
Henan Joint International Research Laboratory of New Energy Storage
Technology, Xinyang Normal University, Xinyang 464000, P. R. China
| | - Deyang Zhang
- Key
Laboratory of Microelectronics and Energy of Henan Province, Engineering
Research Center for MXene Energy Storage Materials of Henan Province,
Henan Joint International Research Laboratory of New Energy Storage
Technology, Xinyang Normal University, Xinyang 464000, P. R. China
| | - Zhaorui Wang
- Key
Laboratory of Microelectronics and Energy of Henan Province, Engineering
Research Center for MXene Energy Storage Materials of Henan Province,
Henan Joint International Research Laboratory of New Energy Storage
Technology, Xinyang Normal University, Xinyang 464000, P. R. China
| | - Yumin Leng
- School
of Mathematics and Physics, Anqing Normal
University, Anqing 246133, P. R. China
| | - Paul K. Chu
- Department
of Physics, Department of Materials Science & Engineering, and
Department of Biomedical Engineering, City
University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China
| | - Yongsong Luo
- Henan
International Joint Laboratory of MXene Materials Microstructure,
College of Physics and Electronic Engineering, Nanyang Normal University, Nanyang 473061, P. R. China
- Key
Laboratory of Microelectronics and Energy of Henan Province, Engineering
Research Center for MXene Energy Storage Materials of Henan Province,
Henan Joint International Research Laboratory of New Energy Storage
Technology, Xinyang Normal University, Xinyang 464000, P. R. China
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3
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Zhang Q, Jiang S, Lv T, Peng Y, Pang H. Application of Conductive MOF in Zinc-Based Batteries. Adv Mater 2023; 35:e2305532. [PMID: 37382197 DOI: 10.1002/adma.202305532] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 06/26/2023] [Indexed: 06/30/2023]
Abstract
The use of conductive MOFs (c-MOFs) in zinc-based batteries has been a popular research direction. Zinc-based batteries are widely used with the advantages of high specific capacity and safety and stability, but they also face many problems. c-MOFs have excellent conductivity compared with other primitive MOFs, and therefore have better applications in zinc-based batteries. In this paper, the transfer mechanisms of the unique charges of c-MOFs: hop transport and band transport, respectively, are discussed and the way of electron transport is further addressed. Then, the various ways to prepare c-MOFs are introduced, among which solvothermal, interfacial synthesis, and postprocessing methods are widely used. In addition, the applications of c-MOFs are discussed in terms of their role and performance in different types of zinc-based batteries. Finally, the current problems of c-MOFs and the prospects for their future development are presented.
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Affiliation(s)
- Qian Zhang
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu, 225009, P. R. China
| | - Shu Jiang
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu, 225009, P. R. China
| | - Tingting Lv
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu, 225009, P. R. China
- Interdisciplinary Materials Research Center, Institute for Advanced Study, Chengdu University, Chengdu, 610106, P. R. China
| | - Yi Peng
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu, 225009, P. R. China
| | - Huan Pang
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu, 225009, P. R. China
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Yu D, Yuan Z, Li X. Enhanced stability of nickel cathode for nickel-based batteries by electroless nickel phosphide plating. Chem Eng Sci 2023. [DOI: 10.1016/j.ces.2023.118512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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5
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Tang H, Ge J, Li L, Zhu X, Wu S, Wang F, Pang Y, Shen Z, Guan C, Chen H. Ultrasound-induced elevation of interlayer spacing and conductivity of CoNi hydroxides for high-performance Ni–Zn batteries. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.107768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Sun F, Chen T, Li Q, Pang H. Hierarchical nickel oxalate superstructure assembled from 1D nanorods for aqueous Nickel-Zinc battery. J Colloid Interface Sci 2022; 627:483-491. [PMID: 35870401 DOI: 10.1016/j.jcis.2022.07.053] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 07/05/2022] [Accepted: 07/09/2022] [Indexed: 11/16/2022]
Abstract
Hierarchical superstructures in nano/microsize can provide improved transport of ions, large surface area, and highly robust structure for electrochemical applications. Herein, a facile solution precipitation method is presented for synthesizing a hierarchical nickel oxalate (Ni-OA) superstructure composed of 1D nanorods under the control of mixed solvent and surfactant of sodium dodecyl sulfate (SDS). The growth process of the hierarchical Ni-OA superstructure was studied and indicated that the product had good stability in mixed solvent. Owing to smaller size, shorter pathway of ion diffusion, and abundant interfacial contact with electrolytes, hierarchical Ni-OA superstructure (Ni-OA-3) showed higher specific capacity than aggregated micro-cuboids (Ni-OA-1) and self-assembled micro/nanorods (Ni-OA-2). Moreover, the assembled Ni-OA-3//Zn battery showed good cyclic stability in aqueous electrolytes, and achieved a maximum energy density of 0.42 mWh cm-2 (138.75 Wh kg-1), and a peak power density of 5.36 mW cm-2 (1.79 kW kg-1). This work may provide a new idea for the investigation of hierarchical nickel oxalate-based materials for electrochemical energy storage.
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Affiliation(s)
- Fancheng Sun
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225009, Jiangsu, PR China
| | - Tingting Chen
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225009, Jiangsu, PR China
| | - Qing Li
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225009, Jiangsu, PR China; Guangling College, Yangzhou University, Yangzhou 225009, Jiangsu, PR China
| | - Huan Pang
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225009, Jiangsu, PR China.
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7
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Li N, Zhang X, Zhao S, Li C, Li X, Wang T, Xing Y, Qu G, Xu X. Amorphous nickel borate nanosheets as cathode material with high capacity and better cycling performance for zinc ion battery. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.07.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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8
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Zhou T, Han Q, Xie L, Yang X, Zhu L, Cao X. Recent Developments and Challenges of Vanadium Oxides (V x O y ) Cathodes for Aqueous Zinc-Ion Batteries. CHEM REC 2021; 22:e202100275. [PMID: 34962053 DOI: 10.1002/tcr.202100275] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 12/04/2021] [Accepted: 12/09/2021] [Indexed: 01/07/2023]
Abstract
The rapid depletion of lithium resources and the increasing demand for electrical energy storage have stimulated the pursuit of emerging electrochemical energy storage. Aqueous zinc ion batteries (ZIBs) are highly sought after for their low cost, high safety, and increased environmental compatibility. However, the search for suitable cathode materials is still tricky for a wide range of researchers. Vanadium oxides (Vx Oy ), with their abundant vanadium valence, easily deformable V-O polyhedrons, and tunable chemical compositions, are of significant advantage in developing emerging materials. This work provides a detailed review of different Vx Oy for the application in aqueous ZIBs. The current problems and optimization strategies of Vx Oy cathode materials are systematically discussed. Finally, the current challenges and possible directions for future research of Vx Oy cathode materials in aqueous ZIBs are presented.
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Affiliation(s)
- Tao Zhou
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou, 450001, PR China.,Key Laboratory of High Specific Energy Materials for Electrochemical Power Sources of Zhengzhou City, Zhengzhou, 450001, PR China
| | - Qing Han
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou, 450001, PR China.,Key Laboratory of High Specific Energy Materials for Electrochemical Power Sources of Zhengzhou City, Zhengzhou, 450001, PR China
| | - Lingling Xie
- School of Environmental Engineering, Henan University of Technology, Zhengzhou, 450001, PR China.,Key Laboratory of High Specific Energy Materials for Electrochemical Power Sources of Zhengzhou City, Zhengzhou, 450001, PR China
| | - Xinli Yang
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou, 450001, PR China.,Key Laboratory of High Specific Energy Materials for Electrochemical Power Sources of Zhengzhou City, Zhengzhou, 450001, PR China
| | - Limin Zhu
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou, 450001, PR China.,Key Laboratory of High Specific Energy Materials for Electrochemical Power Sources of Zhengzhou City, Zhengzhou, 450001, PR China
| | - Xiaoyu Cao
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou, 450001, PR China.,Key Laboratory of High Specific Energy Materials for Electrochemical Power Sources of Zhengzhou City, Zhengzhou, 450001, PR China
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9
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Zhu J, Zhang Q, Yang S, Chen L, Zhao P, Yan Q. Anode Electrodeposition of Fe/Fe
3
O
4
composite on Carbon Fabric as a Negative Electrode for Flexible Ni−Fe Batteries. ChemElectroChem 2021. [DOI: 10.1002/celc.202101178] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Jie Zhu
- Institute for Advanced Study Chengdu University Chengdu P. R. China
| | - Qian Zhang
- Institute for Advanced Study Chengdu University Chengdu P. R. China
| | - Sudong Yang
- Institute for Advanced Study Chengdu University Chengdu P. R. China
| | - Lin Chen
- Institute for Advanced Study Chengdu University Chengdu P. R. China
| | - Peng Zhao
- Institute for Advanced Study Chengdu University Chengdu P. R. China
| | - Qiang Yan
- Institute for Advanced Study in Nuclear Energy & Safety Shenzhen University Shenzhen P. R. China
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10
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Asef P, Milan M, Lapthorn A, Padmanaban S. Future Trends and Aging Analysis of Battery Energy Storage Systems for Electric Vehicles. Sustainability 2021; 13:13779. [DOI: 10.3390/su132413779] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The increase of electric vehicles (EVs), environmental concerns, energy preservation, battery selection, and characteristics have demonstrated the headway of EV development. It is known that the battery units require special considerations because of their nature of temperature sensitivity, aging effects, degradation, cost, and sustainability. Hence, EV advancement is currently concerned where batteries are the energy accumulating infers for EVs. This paper discusses recent trends and developments in battery deployment for EVs. Systematic reviews on explicit energy, state-of-charge, thermal efficiency, energy productivity, life cycle, battery size, market revenue, security, and commerciality are provided. The review includes battery-based energy storage advances and their development, characterizations, qualities of power transformation, and evaluation measures with advantages and burdens for EV applications. This study offers a guide for better battery selection based on exceptional performance proposed for traction applications (e.g., BEVs and HEVs), considering EV’s advancement subjected to sustainability issues, such as resource depletion and the release in the environment of ozone and carbon-damaging substances. This study also provides a case study on an aging assessment for the different types of batteries investigated. The case study targeted lithium-ion battery cells and how aging analysis can be influenced by factors such as ambient temperature, cell temperature, and charging and discharging currents. These parameters showed considerable impacts on life cycle numbers, as a capacity fading of 18.42%, between 25–65 °C was observed. Finally, future trends and demand of the lithium-ion batteries market could increase by 11% and 65%, between 2020–2025, for light-duty and heavy-duty EVs.
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Peng Z, Yang C, Zhao Q, Liang F, Yun S, Liu R, Zhang Z, Liao Y, Chen HC. Ultra-dispersed nickel-cobalt sulfides on reduced graphene oxide with improved power and cycling performances for nickel-zinc batteries. J Colloid Interface Sci 2022; 607:61-7. [PMID: 34492354 DOI: 10.1016/j.jcis.2021.08.193] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 08/24/2021] [Accepted: 08/29/2021] [Indexed: 11/20/2022]
Abstract
Rechargeable alkaline nickel-zinc (Ni-Zn) batteries are attracting increased attention owing to their exceptional inherent safety and high specific capacity. Unfortunately, the limited power and cycling performances of these Ni-Zn batteries are still challenging. Herein, bimetal nickel-cobalt sulfide/ reduced graphene oxide (NiCo-S/RGO) composites with tunable compositions are synthesized by rational designing precursor and subsequent sulfidation treatment. NiCo-S is evenly anchored on RGO surface, resulting in increased number of electrochemical active sites, accelerated electrolyte ion diffusion, and enhanced electrical conductivity. Particularly, by tuning the Ni and Co composition ratios in NiCo-S, NiCo-S/RGO with a Ni to Co ratio of 2:1 (NiCo-S-2/RGO) shows a specific capacity of 145.7 mA h g-1 at 1 A g-1 and long-life cycling retention of 84.7% after 1000 cycles, and the above performances are superior than the controlled samples with other Ni to Co ratios. Furthermore, the as-assembled alkaline zinc batteries of NiCo-S-2/RGO//Zn deliver an impressive specific energy of 333.2 W h kg-1, showing great potential in practical applications. This experiment hopefully provides new idea for construction of high-performance electrodes of aqueous rechargeable batteries.
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Zhou T, Zhu L, Xie L, Han Q, Yang X, Chen L, Wang G, Cao X. Cathode materials for aqueous zinc-ion batteries: A mini review. J Colloid Interface Sci 2021; 605:828-850. [PMID: 34371427 DOI: 10.1016/j.jcis.2021.07.138] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 07/26/2021] [Accepted: 07/27/2021] [Indexed: 12/22/2022]
Abstract
Although lithium-ion batteries (LIBs) have many advantages, they cannot satisfy the demands of numerous large energy storage industries owing to their high cost, low security, and low resource richness. Aqueous zinc-ion batteries (ZIBs) with low cost, high safety, and high synergistic efficiency have attracted an increasing amount of attention and are considered a promising choice to replace LIBs. However, the existing cathode materials for ZIBs have many shortcomings, such as poor electron and zinc ion conductivity and complex energy storage mechanisms. Thus, it is crucial to identify a cathode material with a stable structure, substantial limit, and suitability for ZIBs. In this review, several typical cathode materials for ZIBs employed in recent years and their detailed energy storage mechanisms are summarized, and various methods to enhance the electrochemical properties of ZIBs are briefly introduced. Finally, the existing problems and expected development directions of ZIBs are discussed.
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Affiliation(s)
- Tao Zhou
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, PR China; Key Laboratory of High Specific Energy Materials for Electrochemical Power Sources of Zhengzhou City, Zhengzhou 450001, PR China
| | - Limin Zhu
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, PR China.
| | - Lingling Xie
- School of Environmental Engineering, Henan University of Technology, Zhengzhou 450001, PR China; Key Laboratory of High Specific Energy Materials for Electrochemical Power Sources of Zhengzhou City, Zhengzhou 450001, PR China
| | - Qing Han
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, PR China; Key Laboratory of High Specific Energy Materials for Electrochemical Power Sources of Zhengzhou City, Zhengzhou 450001, PR China
| | - Xinli Yang
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, PR China; Key Laboratory of High Specific Energy Materials for Electrochemical Power Sources of Zhengzhou City, Zhengzhou 450001, PR China
| | - Lei Chen
- College of Chemical and Printing-dyeing Engineering, Henan University of Engineering, Zhengzhou 450007, PR China
| | - Gongke Wang
- School of Materials Science and Engineering, Henan Normal University, Xinxiang 453007, PR China
| | - Xiaoyu Cao
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, PR China; Key Laboratory of High Specific Energy Materials for Electrochemical Power Sources of Zhengzhou City, Zhengzhou 450001, PR China.
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13
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Tao Y, Liu W, Li Z, Zheng Y, Zhu X, Wang H, Wang Y, Lin Q, Wu Q, Pang Y, Shen Z, Chen H. Boosting supercapacitive performance of flexible carbon via surface engineering. J Colloid Interface Sci 2021; 602:636-45. [PMID: 34147754 DOI: 10.1016/j.jcis.2021.06.060] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 05/29/2021] [Accepted: 06/06/2021] [Indexed: 11/20/2022]
Abstract
The relatively low specific capacitance of flexible carbons hinders their practical application for fabricating high-performance flexible supercapacitors. In this work, a surface engineering method is proposed to boost the supercapacitive performance of the flexible carbon. In this method, a flexible carbon was fabricated from carbon felt via co-activation with potassium argininate and potassium hydroxide (KOH) as activators, and the resulting material is abbreviated as AKCF. Unlike traditional KOH activation processes, the addition of potassium argininate can produce a micro-graphitized carbon layer to be the outer layer of AKCF fibers for achieving better electronic transfer. Due to the improved conductivity and lower charge transfer resistance endowed by a thin micro-graphitized carbon layer, the capacitance of the AKCF-0.1 (0.1 M arginine was used) electrode obtained by the co-activation process is elevated to a 1.8-fold higher value of 403 C·g-1 (2583 mC·cm-2) relative to the AKCF-0 (0 M arginine was used) electrode prepared by KOH activation alone (222 C·g-1 or 1369 mC·cm-2). Moreover, this AKCF-0.1 electrode also displays satisfactory rate capability (66% capacitance retention after a 20-fold current increase) and highly stable cycling performance (no capacitance decline after 20,000 cycles). In addition, the asymmetric supercapacitors constructed with this AKCF-0.1 electrode as the flexible negative electrode expresses high energy densities of 68.4 Wh·kg-1 and 0.139 mWh·cm-2 in aqueous and gel electrolytes, respectively.
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