期刊
ELECTROCHIMICA ACTA
卷 172, 期 -, 页码 12-19出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2015.05.019
关键词
stretchable electrode; graphene; polypyrrole; wearable; supercapacitor
资金
- Australian Research Council Centre of Excellence Scheme [CE 140100012]
- ARC [FL110100196]
- Ministry of Education of P. R. China
The advent of self-powered functional garments has given rise to a demand for stretchable energy storage devices that are amendable to integration into textile structures. The electromaterials (anode, cathode and separator) are expected to sustain a deformation of 3% to 55% associated with body movement. Here, we report a stretchable fabric supercapacitor electrode using commonly available nylon lycra fabric as the substrate and graphene oxide (GO) as a dyestuff. It was prepared via a facile dyeing approach followed by a mild chemical reduction. This reduced graphene oxide (rGO) coated fabric electrode retains conductivity at an applied strain of up to 200%. It delivers a specific capacitance of 12.3 F g(-1) at a scan rate of 5 mV s(-1) in 1.0 M lithium sulfate aqueous solution. The capacitance is significantly increased to 114 F g(-1) with the addition of a chemically synthesized polypyrrole (PPy) coating. This PPy-rGO-fabric electrode demonstrates an improved cycling stability and a higher capacitance at 50% strain when compared to the performance observed with no strain. (C) 2015 Elsevier Ltd. All rights reserved.
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