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Highly Conductive Stretchable Electrodes Prepared by In Situ Reduction of Wavy Graphene Oxide Films Coated on Elastic Tapes
Author(s) -
Xu Jingsong,
Chen Ji,
Zhang Miao,
Hong JongDal,
Shi Gaoquan
Publication year - 2016
Publication title -
advanced electronic materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.25
H-Index - 56
ISSN - 2199-160X
DOI - 10.1002/aelm.201600022
Subject(s) - materials science , graphene , oxide , electrode , composite material , capacitance , electrical conductor , elasticity (physics) , annealing (glass) , sheet resistance , electrochemistry , nanotechnology , metallurgy , chemistry , layer (electronics)
A facile method is reported to prepare highly conductive stretchable wavy reduced graphene oxide (rGO) films by in situ reducing blade‐coated graphene oxide films on elastic tapes. The sheet resistance of a 1.20 μm thick rGO film coated elastic tape is measured to be as low as 21 Ω sq −1 and it does not change during 1000 cycles of stretching/releasing with a maximum strain of 100%. The wavy rGO film can also be detached from its elastic substrate into a freestanding state, keeping its excellent elasticity. This in situ reduction method does not involve film transfer and high‐temperature annealing; thus it is convenient and scalable. A solid‐state electrochemical capacitor with these rGO electrodes shows large areal specific capacitance, and excellent electrochemical stability and flexibility.