• 文献标题:   Ultrahigh heating rate induced micro-explosive production of graphene for energy storage
  • 文献类型:   Article
  • 作  者:   ZHANG HH, YANG D, LEI C, LIN H, JIA BH
  • 作者关键词:   microexplosive reduction, flash reduction, porous graphene, supercapacitor
  • 出版物名称:   JOURNAL OF POWER SOURCES
  • ISSN:   0378-7753 EI 1873-2755
  • 通讯作者地址:   Swinburne Univ Technol
  • 被引频次:   4
  • DOI:   10.1016/j.jpowsour.2019.227224
  • 出版年:   2019

▎ 摘  要

Highly porous three-dimensional carbon networks with large ion-accessible surface areas are critical for high-performance electrochemical energy storage devices, yet remain challenging to achieve via simple and scalable processes. By introducing ultrahigh heating rate into thermally driven reduction process and ensuring a high local temperature via thermal management, we propose the production of such materials through micro-explosive reduction process initiated by short heating pulses, for example using a camera flash. This simple and scalable method enables rapid gas generation and release process and creates sponge-like electrode materials with high ion-transportation quality. Electrochemical supercapacitors based on the fabricated electrodes demonstrate high energy density of around 60 Wh kg(-1).