• 文献标题:   Highly compressible graphene/polypyrrole aerogel for superelastic pseudocapacitors
  • 文献类型:   Article
  • 作  者:   LV P
  • 作者关键词:   graphene aerogel, polypyrrole, compressible, electrode, pseudocapacitor
  • 出版物名称:   FULLERENES NANOTUBES CARBON NANOSTRUCTURES
  • ISSN:   1536-383X EI 1536-4046
  • 通讯作者地址:   Nanjing Univ Posts Telecommun
  • 被引频次:   0
  • DOI:   10.1080/1536383X.2017.1396974
  • 出版年:   2018

▎ 摘  要

Highly compressible graphene aerogel are proposed as the promising electrode materials for compression-tolerant electrochemical capacitors. Herein, the polypyrrole (PPy) was introduced into the compressible graphene aerogel to further improve its specific capacitance and compression-tolerant ability. As-prepared graphene/PPy aerogel withstands 95% repeated compression cycling without any structure collapse. The gravimetric capacitance of the superelastic pseudocapacitors based on graphene/PPy aerogel electrodes reaches 335 F g(-1) and can retain 97% even under 95% compressive strain. And a volumetric capacitance of 108 F cm(-3) is achieved due to the significantly increased density of the electrodes under 95% strain. This value of the volumetric capacitance can be preserved by 85% after 3500 charge/discharge cycles with various compression conditions. This work will pave the way for advanced applications in the area of compressible energy-storage devices.