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An all-in-one self-healable capacitor with superior performance


Excellent self-healability is considered as a critical element for next-generation flexible/wearable energy-storage devices. However, realizing superior electrochemical performances remains a big challenge for such devices because self-healability intrinsically offsets their basic energy-storage functions. Here we demonstrate that the conflict can be effectively addressed for a supercapacitor via rationally designing its device configuration at molecular level. The capacitor is fabricated by in-situ integrating polyaniline (PANI) and H2SO4 solution into a single network comprising the copolymer of vinylimidazole and hydroxypropyl acrylate (PVH). The all-in-one configuration combines fast charge-carrier transport, good structural durability and excellent self-healability. Consequently, the resulting capacitor delivers a high specific areal capacitance and rate capability superior to its counterparts, but also keeps ultra-long cycling life even after breaking/healing for 10 times. This example of configuration engineering offers a new and promising avenue to design self-healable energy-storage devices with outstanding performances.

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Publication details

The article was received on 23 Nov 2017, accepted on 09 Jan 2018 and first published on 09 Jan 2018

Article type: Communication
DOI: 10.1039/C7TA10323A
Citation: J. Mater. Chem. A, 2018, Accepted Manuscript
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    An all-in-one self-healable capacitor with superior performance

    F. Liu, J. Wang and Q. Pan, J. Mater. Chem. A, 2018, Accepted Manuscript , DOI: 10.1039/C7TA10323A

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