Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 10, Issue 44, Pages 38057-38065Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.8b12745
Keywords
graphene aerogels; natural drying; residual stress effect; elastic-electrochemical; stress sensor
Funding
- Anhui Provincial Major Scientific and Technological Special Project [17030701062]
- Science & Technology Project of Anhui Province [16030701091]
- Support Project of Outstanding Young Talents in Anhui Provincial Universities [gxyqZD2018006]
- National Natural Science Foundation of China [11504001, 11704002]
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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.
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