3D Freeze-Casting of Cellular Graphene Films for Ultrahigh-Power-Density Supercapacitors
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- 作者：Yuanlong Shao ; Maher F. El-Kady ; Cheng-Wei Lin ; Guanzhou Zhu ; Kristofer L. Marsh ; Jee Youn Hwang ; Qinghong Zhang ; Yaogang Li ; Hongzhi Wang and Richard B. Kaner
- 刊名：Advanced Materials
- 出版年：2016
- 出版时间：August 17, 2016
- 年：2016
- 卷：28
- 期：31
- 页码：6719-6726
- 全文大小：1725K
- ISSN：1521-4095
文摘
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.