• 文献标题:   One-pot fabrication of graphene sheets decorated Co2P-Co hollow nanospheres for advanced lithium ion battery anodes
  • 文献类型:   Article
  • 作  者:   XIE QS, ZENG DQ, GONG PY, HUANG J, MA YT, WANG LS, PENG DL
  • 作者关键词:   cobalt phosphide, cobalt, graphene, hollow nanosphere, lithium ion battery anode
  • 出版物名称:   ELECTROCHIMICA ACTA
  • ISSN:   0013-4686 EI 1873-3859
  • 通讯作者地址:   Xiamen Univ
  • 被引频次:   20
  • DOI:   10.1016/j.electacta.2017.03.003
  • 出版年:   2017

▎ 摘  要

The fabrication of Co2P-Co (Co-P composites) hollow nanospheres with graphene sheets decoration through one-pot solution approach is demonstrated and their potential as the anode materials for lithium ion batteries is assessed. A large specific capacity of 929 mA h g(1) can be retained for Co-P/graphene nanocomposites at 100 mAg(1) after 200 cycles. When cycled at a large current density of 2.0C, the Co-P/ graphene nanocomposites deliver a decent reversible capacity of 567 mA h g(1), which is much higher than the theoretical capacity of traditional graphite anode (372 mAh g 1). The obviously enhanced lithium storage properties of Co-P/graphene nanocomposites are put down to the dual modification of graphene sheets and metal Co as well as their hollow structures. (C) 2017 Elsevier Ltd. All rights reserved.