• 文献标题:   Engineering two-dimensional pores in freestanding TiO2/graphene gel film for high performance lithium ion battery
  • 文献类型:   Article
  • 作  者:   YAN XJ, WANG YY, LIU CC, GUO M, TAO JY, CAO J, FU DJ, DAI LY, YANG XW
  • 作者关键词:   tio2/graphene gel electrode, pore engineering, ions transport channel, lithium ion battery, volumetric performance
  • 出版物名称:   JOURNAL OF ENERGY CHEMISTRY
  • ISSN:   2095-4956
  • 通讯作者地址:   East China Normal Univ
  • 被引频次:   7
  • DOI:   10.1016/j.jechem.2017.11.001
  • 出版年:   2018

▎ 摘  要

As the key component of electrochemical energy storage devices, an electrode with superior ions transport pores is the important premise for high electrochemical performance. In this paper, we developed a unique solution process to prepare freestanding TiO2/graphene hydrogel electrode with tunable density and porous structures. By incorporating room temperature ionic liquids (RTILs), even upon drying, the non-volatile RTILs that remained in the gel film would preserve the efficient ion transport channels and prevent the electrode from closely stacking, to develop dense yet porous structures. As a result, the dense TiO2/graphene gel film as an electrode for lithium ion battery displayed a good gravimetric electrochemical performance and more importantly a high volumetric performance. (C) 2017 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. and Science Press. All rights reserved.