• 文献标题:   Hybrid graphene electrodes for supercapacitors of high energy density
  • 文献类型:   Article
  • 作  者:   ZHANG FF, TANG J, SHINYA N, QIN LC
  • 作者关键词:  
  • 出版物名称:   CHEMICAL PHYSICS LETTERS
  • ISSN:   0009-2614 EI 1873-4448
  • 通讯作者地址:   Natl Inst Mat Sci
  • 被引频次:   30
  • DOI:   10.1016/j.cplett.2013.08.021
  • 出版年:   2013

▎ 摘  要

We describe a process of co-reduction to reduce dispersed graphene oxide (GO) and single-walled carbon nanotubes (SWNTs) simultaneously for preparation of hybrid electrodes for graphene supercapacitors. The SWNTs are in between the inter-layer space of graphene sheets as a spacer to prevent effectively restacking of graphene that often limits seriously the electrochemical performance of graphene supercapacitors. The SWNTs also act as conductive binders to improve the electrical conduction of the electrode. A high specific capacitance of 261 F g(-1) for a single electrode and specific energy density of 123 W h kg(-1) measured in the two-electrode configuration have been obtained in ionic liquid (EMI-TFSI). (C) 2013 Elsevier B. V. All rights reserved.