• 文献标题:   Superior cycle stability of nitrogen-doped graphene nanosheets as anodes for lithium ion batteries
  • 文献类型:   Article
  • 作  者:   LI XF, GENG DS, ZHANG Y, MENG XB, LI RY, SUN XL
  • 作者关键词:   graphene, nitrogen doping, anode, cycle stability, lithium ion batterie
  • 出版物名称:   ELECTROCHEMISTRY COMMUNICATIONS
  • ISSN:   1388-2481
  • 通讯作者地址:   Univ Western Ontario
  • 被引频次:   243
  • DOI:   10.1016/j.elecom.2011.05.012
  • 出版年:   2011

▎ 摘  要

The specific capacity of nitrogen-doped graphene nanosheet (N-GNS) evidently increases with charge/discharge cycles, exhibiting superior electrochemical performance. N-GNS presented a specific capacity of 684 mAh g(-1) in the 501st cycles while only 452 mAh g(-1) in the 100th cycle, accounting for higher cycling stability and larger specific capacity in comparison to a pristine graphene and a commercialized graphite anode. The obtained significant improvement is attributed to the incorporated nitrogen to graphene planes with a result of more structural defects during cycling. (C) 2011 Elsevier B.V. All rights reserved.