首页|Advanced preparation and application of bimetallic materials in lithium-sulfur batteries:A review

Advanced preparation and application of bimetallic materials in lithium-sulfur batteries:A review

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Lithium-sulfur(Li-S)batteries are considered highly promising as next-generation energy storage sys-tems due to high theoretical capacity(2600 W h kg-1)and energy density(1675 mA h g-1)as well as the abundant natural reserves,low cost of elemental sulfur,and environmentally friendly properties.However,several challenges impede its commercialization including low conductivity of sulfur itself,the severe"shuttle effect"caused by lithium polysulfides(LiPSs)during charge-discharge processes,vol-ume expansion effects and sluggish reaction kinetics.As a solution,polar metal particles and their com-pounds have been introduced as the main hosts for sulfur cathode due to their robust catalytic activity and adsorption capability,effectively suppressing the"shuttle effect"of LiPSs.Bimetallic alloys and their compounds with multi-functional properties exhibit remarkable electrochemical performance more readily when compared to single-metal materials.Well-designed bimetallic materials demonstrate larger specific surface areas and richer active sites,enabling simultaneous high adsorption capability and strong catalytic properties.The synergistic effect of the"adsorption-catalysis"sites accelerates the adsorption-diffusion-conversion process of LiPSs,ultimately achieving a long-lasting Li-S battery.Herein,the latest progress and performance of bimetallic materials in cathodes,separators,and interlayers of Li-S batteries are systematically reviewed.Firstly,the principles and challenges of Li-S batteries are briefly analyzed.Then,various mechanisms for suppressing"shuttle effects"of LiPSs are emphasized at the microscale.Subsequently,the performance parameters of various bimetallic materials are comprehensively summa-rized,and some improvement strategies are proposed based on these findings.Finally,the future pro-spects of bimetallic materials are discussed,with the hope of providing profound insights for the rational design and manufacturing of high-performance bimetallic materials for LSBs.

Bimetallic materialsLithium-sulfur batteriesEffectively suppress shuttle effect of LiPSsSignificantly improve reaction kineticsExceptionally long lifespan

Yongbing Jin、Nanping Deng、Yanan Li、Hao Wang、Meiling Zhang、Weimin Kang、Bowen Cheng

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State Key Laboratory of Separation Membranes and Membrane Processes/National Center for International Joint Research on Separation Membranes,School of Textile Science and Engineering,Tiangong University,Tianjin 300387,China

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaTianjin Natural Science FoundationNational innovation and entrepreneurship training program for college studentsTianjin Municipal college students'innovation and entrepreneurship training programScience & Technology Development Fund of Tianjin Education Commission for Higher EducationState Key Laboratory of Membrane and Membrane Separation,Tiangong University

52203066519731576190412318JCQNJC029002023100580072023100580882018KJ196

2024

10.1016/j.jechem.2023.09.031

能源化学
中国科学院大连化学物理研究所 中国科学院成都有机化学研究所

能源化学

CSTPCDEI
影响因子：0.654
ISSN：2095-4956
年,卷(期)：2024.88(1)
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