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Updated: Mar 20, 2026
Evaluating the Electrochemical Properties of Supercapacitors using the Three-Electrode System
Published on: January 7, 2022
3D Freeze-Casting of Cellular Graphene Films for Ultrahigh-Power-Density Supercapacitors
Yuanlong Shao1,2, Maher F El-Kady1,3, Cheng-Wei Lin1
1Department of Chemistry and Biochemistry, California NanoSystems Institute, University of California, Los Angeles (UCLA), Los Angeles, CA, 90095, USA.
Abstract:
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.
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