• 文献标题:   A facile route to prepare nitrogen-doped carbon microspheres/graphene aerogel with high compressibility and superior capacitive property
  • 文献类型:   Article
  • 作  者:   ZHANG EH, LIU WF, LIU XG, ZHAO ZB, YANG YZ
  • 作者关键词:   graphene based aerogel, compressibility, capacitive
  • 出版物名称:   MATERIALS TODAY COMMUNICATIONS
  • ISSN:   2352-4928
  • 通讯作者地址:   Taiyuan Univ Technol
  • 被引频次:   0
  • DOI:   10.1016/j.mtcomm.2020.101125
  • 出版年:   2020

▎ 摘  要

A facile strategy of spacer functionalization-lyophilization-annealing treatment is designed to synthesize nitrogen-doped carbon microspheres/graphene aerogel (N-CMS/GA) with three-dimensional (3D) hierarchical structure, high compressibility and excellent capacitive property. The as-synthesized PPy by weak oxidant (FeCl2/H2O2) owns high water wettability favorable for the self-assembly of the precursor into high-performance graphene-based aerogel. The N-CMS/GA exhibits a Young's modulus of 8.7 kPa, even compressed to epsilon = 90%, it could still rebound to nearly its initial volume. Besides, high specific capacitance (346 F g(-1)) at a current density of 1 A g(-1), superior rate capability (92 % of initial capacitance value kept at the current density increasing from 0.1 to 2.0 A g(-1)) and excellent cycle life (98.7% after cycling 10 000 times in 1.0 M KOH electrolyte) can be obtained. This research provides contributions to large scale and simple preparation of graphene-based hybrid aerogels for application in flexible devices whose mass and volume are limited seriously.