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A Hierarchical Carbon Derived from Sponge‐Templated Activation of Graphene Oxide for High‐Performance Supercapacitor Electrodes
Author(s) -
Xu Jin,
Tan Ziqi,
Zeng Wencong,
Chen Guanxiong,
Wu Shuilin,
Zhao Yuan,
Ni Kun,
Tao Zhuchen,
Ikram Mujtaba,
Ji Hengxing,
Zhu Yanwu
Publication year - 2016
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201600586
Subject(s) - supercapacitor , graphene , materials science , oxide , nanotechnology , carbon fibers , power density , electrode , power (physics) , electrochemistry , composite material , chemistry , physics , quantum mechanics , composite number , metallurgy
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.