Supercapacitors: A Hierarchical Carbon Derived from Sponge-Templated Activation of Graphene Oxide for High-Performance Supercapacitor Electrodes (Adv. Mater. 26/2016)

Jin Xu; Ziqi Tan; Wencong Zeng; Guanxiong Chen; Shuilin Wu; Yuan Zhao; Kun Ni; Zhuchen Tao; Mujtaba Ikram; Hengxing Ji; Yanwu Zhu

doi:10.1002/adma.201670184

Supercapacitors: A Hierarchical Carbon Derived from Sponge-Templated Activation of Graphene Oxide for High-Performance Supercapacitor Electrodes (Adv. Mater. 26/2016)

Adv Mater. 2016 Jul;28(26):5331. doi: 10.1002/adma.201670184.

Authors

Jin Xu¹, Ziqi Tan¹, Wencong Zeng¹, Guanxiong Chen¹, Shuilin Wu¹, Yuan Zhao¹, Kun Ni¹, Zhuchen Tao¹, Mujtaba Ikram¹, Hengxing Ji^{1

2}, Yanwu Zhu^{1

2}

Affiliations

¹ Key Laboratory of Materials for Energy Conversion, Chinese Academy of Sciences, Department of Materials Science and Engineering, University of Science and Technology of China, 96 Jin Zhai Rd, Anhui Province, Hefei, 230026, P. R. China.
² iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), University of Science and Technology of China, 96 Jin Zhai Rd, Anhui Province, Hefei, 230026, P. R. China.

PMID: 27383024
DOI: 10.1002/adma.201670184

Abstract

H. Ji, Y. Zhu, and co-workers demonstrate a 3D hierarchically porous carbon by introducing a polyurethane sponge to template graphene oxide into a 3D interconnected structure while KOH activation generates abundant micropores in its backbone. As described on page 5222, a supercapacitor assembled with this carbon material achieves a high energy density of 89 W h kg(-1) (64 W h L(-1) ) and outstanding power density due to its shortened ion transport distance in three dimensions.

Keywords: activation; graphene oxide; sponge-templating; supercapacitors.