• 文献标题:   Synthesis of Fe3O4 cluster microspheres/graphene aerogels composite as anode for high-performance lithium ion battery
  • 文献类型:   Article
  • 作  者:   ZHOU S, ZHOU Y, JIANG W, GUO HJ, WANG ZX, LI XH
  • 作者关键词:   lithium storage, iron oxide, graphene aerogel, anode material
  • 出版物名称:   APPLIED SURFACE SCIENCE
  • ISSN:   0169-4332 EI 1873-5584
  • 通讯作者地址:   Nanjing Univ Sci Technol
  • 被引频次:   5
  • DOI:   10.1016/j.apsusc.2017.12.259
  • 出版年:   2018

▎ 摘  要

Iron oxides are considered as attractive electrode materials because of their capability of lithium storage, but their poor conductivity and large volume expansion lead to unsatisfactory cycling stability. We designed and synthesized a novel Fe3O4 cluster microspheres/Graphene aerogels composite (Fe3O4/GAs), where Fe3O4 nanoparticles were assembled into cluster microspheres and then embedded in 3D graphene aerogels framework. In the spheres, the sufficient free space between Fe3O4 nanoparticles could accommodate the volume change during cycling process. Graphene aerogel works as flexible and conductive matrix, which can not only significantly increase the mechanical stress, but also further improve the storage properties. The Fe3O4/GAs composite as an anode material exhibits high reversible capability and excellent cyclic capacity for lithium ion batteries (LIBs). A reversible capability of 650 mAh g(-1) after 500 cycles at a current density of 1 A g(-1) can be maintained. The superior storage capabilities of the composites make them potential anode materials for LIBs. (C) 2018 Elsevier B.V. All rights reserved.