• 文献标题:   Randomly stacked holey graphene anodes for lithium ion batteries with enhanced electrochemical performance
  • 文献类型:   Article
  • 作  者:   JIANG ZQ, PEI B, MANTHIRAM A
  • 作者关键词:  
  • 出版物名称:   JOURNAL OF MATERIALS CHEMISTRY A
  • ISSN:   2050-7488 EI 2050-7496
  • 通讯作者地址:   Univ Texas Austin
  • 被引频次:   65
  • DOI:   10.1039/c3ta10457e
  • 出版年:   2013

▎ 摘  要

Holey graphene (HG) synthesized by a hydrothermal method followed by etching with KOH and ball milling is randomly stacked to form a porous structure. These randomly stacked holey graphene anodes exhibit high rate capability with excellent cycling stability as an anode material for lithium-ion cells. This fascinating electrochemical performance can be ascribed to their specific porous structure, providing numerous active sites for Li+ insertion, reduced effective diffusion distance for the Li+ ions, high electrical conductivity, low charge-transfer resistance across the electrolyte-electrode interface, and improved structural stability against the local volume change during Li+ insertion-extraction.