Inorganic Chemicals Industry ›› 2025, Vol. 57 ›› Issue (2): 1-13.doi: 10.19964/j.issn.1006-4990.2024-0329

• Reviews and Special Topics •     Next Articles

Recent research progress of lithium sulfur batteries under lean electrolyte based on sulfur electrode design

CHEN Xue1,2,3(), JIANG Guanghui1,2,3, OUYANG Quansheng1,2,3(), SHAO Jiaojing3,4()   

  1. 1.Advanced Batteries and Materials Engineering Research Center,Guizhou Light Industry Technical College,Guiyang 561113,China
    2.Provincial Collaborative Innovation Center of Used Power Batteries Recycling,Guiyang 561113,China
    3.Graphene Materials Engineering Research Center of Guizhou Colleges and Universities,Guiyang 56113,China
    4.School of Materials and Metallurgy,Guizhou University,Guiyang 56113,China
  • Received:2024-06-11 Online:2025-02-10 Published:2024-07-22
  • Contact: OUYANG Quansheng, SHAO Jiaojing E-mail:1548582799@qq.com;qsouyang@163.com;shaojiao_jing@163.com

Abstract:

Lithium sulfur batteries(LSBs) have attracted considerable attention as promising next-generation energy storage devices due to their high theoritical energy density.Although the electrochemical performance of LSBs has been significantly enhanced over the past decade,most of their test condition is based on excessive electrolyte usage.High electrolyte usage not only increases the manufacturing cost of batteries but also reduces their actual energy density,Which is detrimental to commercial applications of LSBs.Therefore,it is especially critical to develop LSBs that combine low electrolyte usage with excellent electrochemical performance.The challenges faced by LSBs under lean electrolyte conditions were outlined and the approaches based on sulfur electrode design to reduce electrolyte usage were discussed in detail:1)optimizing electrode porosity and ion conduction to shorten the transport path of lithium ions and enhance their conductivity;2)introducing meta-based or nonmetallic-based catalysis to enhance the reaction kinetics of active materials under lean electrolyte conditions;3)developing novel active materials to avoid the degradation of battery performance caused by the large amount of lithium polysulfides dissolved in the electrolyte under lean electrolyte conditions.Finally,the perspectives on further optimizing the design of sulfur cathode to develop high-energy-density LSBs with lean electrolyte were proposed.

Key words: lithium sulfur batteries, sulfur electrode design, lean electrolyte

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