• 文献标题:   Synthesis and Functionalization of 3D Nano-graphene Materials: Graphene Aerogels and Graphene Macro Assemblies
  • 文献类型:   Article
  • 作  者:   CAMPBELL PG, WORSLEY MA, HISZPANSKI AM, BAUMANN TF, BIENER J
  • 作者关键词:   engineering, issue 105, graphene, solgel, aerogel, carbon nanotube, supercapacitor, battery, electrode, low density, high surface area
  • 出版物名称:   JOVEJOURNAL OF VISUALIZED EXPERIMENTS
  • ISSN:   1940-087X
  • 通讯作者地址:   Lawrence Berkeley Natl Lab
  • 被引频次:   3
  • DOI:   10.3791/53235
  • 出版年:   2015

▎ 摘  要

Efforts to assemble graphene into three-dimensional monolithic structures have been hampered by the high cost and poor processability of graphene. Additionally, most reported graphene assemblies are held together through physical interactions (e.g., van der Waals forces) rather than chemical bonds, which limit their mechanical strength and conductivity. This video method details recently developed strategies to fabricate mass-producible, graphene-based bulk materials derived from either polymer foams or single layer graphene oxide. These materials consist primarily of individual graphene sheets connected through covalently bound carbon linkers. They maintain the favorable properties of graphene such as high surface area and high electrical and thermal conductivity, combined with tunable pore morphology and exceptional mechanical strength and elasticity. This flexible synthetic method can be extended to the fabrication of polymer/carbon nanotube (CNT) and polymer/graphene oxide (GO) composite materials. Furthermore, additional post-synthetic functionalization with anthraquinone is described, which enables a dramatic increase in charge storage performance in supercapacitor applications.