Department of Chemistry and Biochemistry, California NanoSystems Institute, University of California, Los Angeles (UCLA), Los Angeles, CA, 90095, USA.
State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Material Science and Engineering, Donghua University, Shanghai, 201620, China.
Adv Mater. 2016 Aug;28(31):6719-26. doi: 10.1002/adma.201506157. Epub 2016 May 23.
3D cellular graphene films with open porosity, high electrical conductivity, and good tensile strength, can be synthesized by a method combining freeze-casting and filtration. The resulting supercapacitors based on 3D porous reduced graphene oxide (RGO) film exhibit extremely high specific power densities and high energy densities. The fabrication process provides an effective means for controlling the pore size, electronic conductivity, and loading mass of the electrode materials, toward devices with high energy-storage performance.
3D 细胞状石墨烯薄膜具有开放孔隙率、高导电性和良好的拉伸强度,可通过结合冷冻铸造和过滤的方法合成。基于 3D 多孔还原氧化石墨烯 (RGO) 薄膜的超级电容器具有极高的比功率密度和高能量密度。该制造工艺为控制电极材料的孔径、电子电导率和负载量提供了有效手段,有利于获得具有高储能性能的器件。