• 文献标题:   Synthesis of graphene/Ca2Ge7O16 nanofibers composite as anode materials for lithium-ion batteries
  • 文献类型:   Article
  • 作  者:   WEI W, JIA FF, WANG KF, LUO BW, QU P, XU MT
  • 作者关键词:   graphene, ca2ge7o16, nanofiber, interface, energy storage conversion
  • 出版物名称:   MATERIALS LETTERS
  • ISSN:   0167-577X EI 1873-4979
  • 通讯作者地址:   Shangqiu Normal Univ
  • 被引频次:   1
  • DOI:   10.1016/j.matlet.2017.02.115
  • 出版年:   2017

▎ 摘  要

Graphene/Ca2Ge7O16 nanofibers composite (GCNF) was synthesized by a facile in situ hydrothermal process. In the composite, Ca2Ge7O16 nanofibers (CNF) were enwrapped by the highly conductive graphene sheets. As anode material for lithium ion batteries, at the current density of 0.6 mA cm (2), the GCNF electrode delivered a reversible charge capacity of 602 mA h g (1), with a capacity retention of 99% after 100 cycles. When the current density was increased to 3, 6 and 15 mA cm (2), the electrode still delivered 517, 414 and 354 mA h g (1), respectively. The excellent electrochemical performance can be attributed to synergistic effect between graphene and CNF, which improve the structural stability and the electronic conductivity of the composite. (C) 2017 Elsevier B.V. All rights reserved.