Compressible Supercapacitor with Residual Stress Effect for Sensitive Elastic-Electrochemical Stress Sensor

In this work, we have synthesized graphene aerogels using natural-drying method and fabricated a compressible all-solid-state supercapacitor, which offers outstanding energy density of 23.08 Wh kg–1 at 240 W kg–1. We further demonstrate that the device is deformable in squeezed cases with a residual...

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Bibliographic Details
Published in:ACS applied materials & interfaces 2018-11, Vol.10 (44), p.38057-38065
Main Authors: Wei, Ning, Ruan, Limin, Zeng, Wei, Liang, Dong, Xu, Chao, Huang, Linsheng, Zhao, Jinling
Format: Article
Language:English
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Summary:In this work, we have synthesized graphene aerogels using natural-drying method and fabricated a compressible all-solid-state supercapacitor, which offers outstanding energy density of 23.08 Wh kg–1 at 240 W kg–1. We further demonstrate that the device is deformable in squeezed cases with a residual stress effect. Taking advantage of the compressibility and excellent electrochemical performance of the graphene aerogel, we offer a new type of stress sensor called elastic-electrochemical stress sensor. Served as the elastic-electrochemical stress device, the cell demonstrates steady response current toward the external mechanical force by transforming mechanical energy to electrochemical energy. The high-sensitive stress sensor will help us comprehend the interaction principle between electrochemistry and external stress well.
ISSN:1944-8244
1944-8252
DOI:10.1021/acsami.8b12745