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电化学(中英文) ›› 2020, Vol. 26 ›› Issue (5): 648-662.  doi: 10.13208/j.electrochem.200642

• 综述 • 上一篇    下一篇

锂硫电池及关键材料研究进展

陈嘉嘉*(), 董全峰*()   

  1. 固体表面物理化学国家重点实验室,厦门大学化学化工学院,福建 厦门 361005
  • 收稿日期:2020-06-10 修回日期:2020-08-10 出版日期:2020-10-28 发布日期:2020-08-18
  • 通讯作者: 陈嘉嘉,董全峰 E-mail:JiaJia.Chen@xmu.edu.cn;qfdong@xmu.edu.cn
  • 基金资助:
    国家自然科学基金项目(U1805254);国家自然科学基金项目(21673196);国家自然科学基金项目(21703186);国家自然科学基金项目(U1705255);国家自然科学基金项目(21773192);国家自然科学基金项目(21975211);中央高校基础研究经费(20720190035);厦门大学南强青年拔尖人才计划

Research Progress of Key Components in Lithium-Sulfur Batteries

CHEN Jia-jia*(), DONG Quan-feng*()   

  1. State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry,College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China
  • Received:2020-06-10 Revised:2020-08-10 Published:2020-10-28 Online:2020-08-18
  • Contact: CHEN Jia-jia,DONG Quan-feng E-mail:JiaJia.Chen@xmu.edu.cn;qfdong@xmu.edu.cn

摘要:

锂硫电池因具有远高于传统锂离子电池的理论比容量和质量能量密度,而受到人们的广泛关注,近年来一直是高能锂金属电池领域的研究热点之一. 然而这一体系的一些固有特性问题依然没有得到解决,无法实现稳定理论容量输出,严重阻碍了锂硫电池的实际应用. 其中,比较突出的问题是电池充放电过程中生成可溶性中间产物-多硫化物-对硫基正极、锂基负极和电解液等电池关键组成部分具有深刻的影响. 本综述从多硫化物的热力学和动力学等性质入手,详细介绍了锂硫电池中关键材料的功能化设计和优化策略,并对未来的发展做出展望.

Abstract:

Due to the much higher theoretical specific capacity and energy density than the ones of traditional lithium ion battery, Li-S batteries have long been at the pinnacle in the realms of high-energy Li-metal batteries. However, the complicated electrochemical reactions on the sulfur cathode and Li anode, induced by the thermodynamic and kinetic behaviors of lithium polysulfides, are the intrinsic bottleneck to realize the full potential of Li-S batteries for practical application. In this review, we firstly discuss the roles, and thermodynamic and kinetic behaviors of polysulfides in the charging and discharging processes of Li-S batteries. Then, the functional design and optimization strategy of sulfur cathode, Li anode and electrolytes are introduced in detail. Finally, new insights are prospected for future advanced Li-S batteries.

Key words: lithium-sulfur batteries, polysulfides, sulfur-based cathode, lithium-based anode, electrolyte

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