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Facile synthesis of three‐dimensional graphene networks by magnetron sputtering for supercapacitor electrode
Author(s) -
Du Xiaojun,
Wu Wenge,
An Chunhua,
Cheng Yunping,
Zhang Xinyu,
Sun Youyi,
Liu Yaqing
Publication year - 2016
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.3543
Subject(s) - graphene , supercapacitor , electrode , materials science , capacitance , sputter deposition , graphene foam , optoelectronics , deposition (geology) , electrical conductor , nanotechnology , conductivity , sputtering , chemical engineering , graphene nanoribbons , composite material , thin film , chemistry , sediment , engineering , biology , paleontology
Summary Three‐dimensional (3D) graphene network deposition on Ni foam without any conductive agents and polymer binders was successfully synthesized by radio frequency magnetron sputtering at low temperature. The direct and close contact between graphene and Ni foam is beneficial to the enhanced conductivity of the electrode, as well as the improvement of ion diffusion/transport into the electrode. As a result, the 3D graphene network deposition on Ni foam electrode delivered a high specific capacitance of 122.0 F g −1 at 1.0 A g −1 and excellent cycle stability with capacitance retention of 99.0% after 1000 charge–discharge cycles. The work shows a new way to facile synthesis of 3D graphene network for various applications in the future. Copyright © 2016 John Wiley & Sons, Ltd.