A Hierarchical Carbon Derived from Sponge-Templated Activation of Graphene Oxide for High-Performance Supercapacitor Electrodes

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.201600586

A Hierarchical Carbon Derived from Sponge-Templated Activation of Graphene Oxide for High-Performance Supercapacitor Electrodes

Adv Mater. 2016 Jul;28(26):5222-8. doi: 10.1002/adma.201600586. Epub 2016 May 3.

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: 27143563
DOI: 10.1002/adma.201600586

Abstract

A hierarchical porous carbon is fabricated by introducing a polyurethane sponge to a template graphene oxide into a 3D interconnected structure, while KOH activation generates abundant micropores in its backbone. Supercapacitors assembled with this carbon achieve a high energy density of 89 W h kg(-1) (64 W h L(-1) ) and outstanding power density due to the shortened ion-transport distance in 3D.

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