储能科学与技术 ›› 2020, Vol. 9 ›› Issue (1): 1-4.doi: 10.19799/j.cnki.2095-4239.2019.0261

• 学术争鸣 • 上一篇    下一篇

锂硫二次电池之我见

王久林()   

  1. 上海交通大学化学化工学院，上海 200240
  • 收稿日期:2019-11-12 修回日期:2019-11-13 出版日期:2020-01-05 发布日期:2019-11-20
  • 作者简介:王久林（1974—），男，研究员，自1999年以来长期致力于锂硫二次电池及其关键材料的研究,E-mail:wangjiulin@sjtu.edu.cn。
  • 基金资助:
    国家自然科学基金(U1705255);广东省“新能源汽车”重点研发计划(2019B090908001)

The opinions for lithium sulfur battery

WANG Jiulin()   

  1. School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
  • Received:2019-11-12 Revised:2019-11-13 Online:2020-01-05 Published:2019-11-20

RichHTML

79

PDF

943

摘要：

因为理论能量密度高和硫资源丰富，锂硫电池成为目前研究的热点之一。锂硫电池反应历程复杂、中间产物多，众多理解和说法与锂离子电池不尽相同。为此，从硫正极、锂负极、电解质和电池四方面，作者简述了对锂硫电池中相关问题的理解和看法。正极材料大致可分为“流动硫”和“固定硫”两类，二者各有特色，后者基于固固转化反应机制，有利提升体积能量密度和构建固态电池；锂负极寿命和电池安全性是锂硫开发过程中必须攻克的难关。

关键词: 锂硫电池, 硫正极, 锂负极, 电解质

Abstract:

Because of high theoretical energy density and large resources of elemental sulfur, lithium sulfur （Li/S） became one of hot topics in the battery community. Due to the complex reaction process and many intermediate products which obviously differ to typical lithium ion batteries, this paper shows my own understanding and opinions about Li/S on four aspects of sulfur cathode, lithium anode, electrolyte and battery. Most of reported sulfur cathode materials can be divided into two categories, that is, mobile sulfur and stationary sulfur, which was briefly summarized in Table 1. The lithium metal anode still is the critical problem and more breakthrough works are required to accelerate the progress of Li/S applications. Safety is the first priority. More attention should be paid to construct intrinsic safe Li/S battery to ensure it highly reliable during all cycle life.

Key words: lithium sulfur, sulfur cathode, lithium anode, electrolyte

中图分类号: