• 文献标题:   Natural graphene microsheets/sulfur as Li-S battery cathode towards > 99% coulombic efficiency of long cycles
  • 文献类型:   Article
  • 作  者:   ZHANG Y, DUAN XY, WANG J, WANG CW, WANG JY, WANG JL, WANG JZ
  • 作者关键词:   lis battery, graphene, graphite mineral, cathode, cyclability
  • 出版物名称:   JOURNAL OF POWER SOURCES
  • ISSN:   0378-7753 EI 1873-2755
  • 通讯作者地址:   Chinese Acad Sci
  • 被引频次:   13
  • DOI:   10.1016/j.jpowsour.2017.11.061
  • 出版年:   2018

▎ 摘  要

Lithium-sulfur battery receives intense attention owing to its high theoretical energy density. However, poor electrical conductivity of sulfur and poor cycle stability of the battery hinder its application. Here, we report that graphene microsheets prepared from microcrystalline graphite minerals by an electrochemical & mechanical approach work as a special conductive support to load sulfur as the cathode of lithium-sulfur battery. The graphene microsheets have the features of excellent conductivity and low defect, small sheet sizes of < 1 mu m(2) and