锂硫电池有机硫聚合物正极材料研究进展  

Research Progress of Organic Sulfur Polymer Cathode Materials for Lithium-Sulfur Batteries

作　　者：钱思逸 蒋玉卓 曹宇锋[1] 钱涛 晏成林 刘杰[1,2] 

机构地区：[1]南通大学化学化工学院,江苏 南通 [2]苏州大学能源学院,江苏 苏州

出　　处：《物理化学进展》2021年第3期41-50,共10页Journal of Advances in Physical Chemistry

摘　　要：锂–硫(Li-S)电池能量密度高,成本低,十分具有替代目前的商用锂离子电池的潜力。然而在电池工作时,多硫化物的穿梭效应极大地缩短了电池的循环寿命。近年来,硫共聚策略被认为是提高Li-S电池稳定性的一种创新而有效的方法,在该策略中,环状硫被熔融成线型,随后与可聚合的连接单体共聚形成稳定的有机硫聚合物。由于硫与共聚物骨架之间形成强共价键,因此在循环时可以有效地抑制多硫化物的溶解。本文综述了锂硫电池有机硫共聚物正极材料方面的相关研究进展。Lithium-sulfur (Li-S) batteries have the potential to replace current commercial lithium-ion batter-ies because of their high energy density and low cost. However, the shuttle effect of polysulfide greatly shortens the cycle life of the battery in operation. In recent years, the sulfur copolymeriza-tion strategy has been considered as an innovative and effective method to improve the stability of Li-S batteries. In this strategy, the cyclic sulfur is fused into a linear form and then copolymerized with the polymerizable linking monomer to form a stable organic sulfur polymer. Because of the strong covalent bond between sulfur and the copolymer skeleton, the dissolution of polysulfide can be effectively inhibited during cycling. In this paper, the research progress of organic sulfur copol-ymer cathode materials for lithium-sulfur batteries is reviewed.

关 键 词：有机硫聚合物 正极材料 锂硫电池 

分 类 号：TM9[电气工程—电力电子与电力传动]