新型炭材料2021，Vol.36Issue(2)：336-349,14.DOI:10.1016/S1872-5805(21)60023-12
石墨烯及其复合材料在锂硫电池中抑制穿梭效应的应用进展
The use of graphene and its composites to suppress the shuttle effect in lithium-sulfur batteries
摘要
Abstract
The lithium sulfur battery has a high theoretical capacity of 1675 mAh g-1, and is cheap and environmentally friendly, which make it a very promising secondary battery. However, its cycling stability cannot meet the requirements of industrialization due to the shuttle effect caused by the dissolution of polysulfides in the discharge process, the insulating nature of sulfur and the volume expansion of the sulfur cathode. Graphene has an excellent electrical conductivity, an extremely large specific surface area, good mechanical flexibility, and thermal and chemical stability, making it and its derivatives promising candidates to modify both the electrodes of an all-solid-state lithium-sulfur battery and the separator. The mechanisms, by which graphene and its derivatives inhib-it the shuttle effect are summarized. The graphene network is very favorable for improving electron transfer rate, limiting volume ex-pansion and facilitating lithium ion migration in the sulfur cathode of all-solid-state lithium-sulfur batteries. As modifiers of the sep-arator, the hexagonal layer structure of graphene and its derivatives forms channels for lithium-ion transport and sulfur capture. De-velopment strategies for using graphene and its derivatives in lithium-sulfur batteries are proposed.关键词
石墨烯/锂硫/穿梭效应/全固态/改性层Key words
Graphene/Lithium-sulfur/Shuttle effect/All-solid-state/Modified layer分类
通用工业技术引用本文复制引用
李丽波,单宇航..石墨烯及其复合材料在锂硫电池中抑制穿梭效应的应用进展[J].新型炭材料,2021,36(2):336-349,14.基金项目
National Natural Science Foundation of China(No.21706043).国家自然科学基金项目(No.21706043). （No.21706043）
