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Three‐Dimensional Nitrogen‐Doped Graphene Frameworks from Electrochemical Exfoliation of Graphite as Efficient Supercapacitor Electrodes
Author(s) -
Xiao Xiang,
Zeng Yinxiang,
Feng Haobin,
Xu Kaiqi,
Zhong Guobin,
Wu Shijia,
Wang Chao,
Zhao Wei,
Su Wei,
Wei Zengfu,
Lu Xihong
Publication year - 2019
Publication title -
chemnanomat
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.947
H-Index - 32
ISSN - 2199-692X
DOI - 10.1002/cnma.201800452
Subject(s) - graphene , exfoliation joint , supercapacitor , materials science , electrode , electrochemistry , graphite , capacitance , nanotechnology , doping , conductivity , graphene foam , nitrogen , graphene oxide paper , chemical engineering , optoelectronics , composite material , chemistry , organic chemistry , engineering
A facile, low‐cost, and efficient electrochemical exfoliation method is demonstrated to prepare three‐dimensional nitrogen‐doped graphene frameworks on a large scale. Benefiting from the enhanced specific surface area, increased conductivity and enriched active sites, the nitrogen‐doped graphene framework electrode exhibits remarkable capacitance, good cyclic stability, and superior rate capability (65.3% capacitance retention), outperforming most of the reported graphene‐based electrodes.