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Flexible and stretchable polyaniline supercapacitor with a high rate capability
Author(s) -
Huang Zhixuan,
Ji Zhenyuan,
Feng Yuping,
Wang Panpan,
Huang Yan
Publication year - 2021
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.5982
Subject(s) - supercapacitor , materials science , pseudocapacitance , polyaniline , capacitance , horizontal scan rate , energy storage , nanotechnology , capacitor , conductive polymer , composite material , polymer , electrochemistry , electrode , electrical engineering , voltage , cyclic voltammetry , power (physics) , chemistry , physics , quantum mechanics , polymerization , engineering
Abstract Flexible electronics are currently highly favored because of their promising applications in flexible displays, artificial electronic skin, wearable devices etc . Exploiting flexible energy storage systems, which are supercapacitors, that have a decent electrochemical performance as well as flexibility and stretchability is essential to promote the development of flexible electronic products. In this work, a flexible and stretchable polyaniline (PANI) supercapacitor based on a conductive stainless steel mesh was developed via a simple electrodeposition route with an elastic gel polyvinyl alcohol polymer (PVA)/phosphoric acid (H 3 PO 4 ) electrolyte, which exhibits a considerable rate capability and mechanical properties. The as‐prepared capacitor delivers a specific capacitance of 282 F g −1 under a specific current of 2.5 A g −1 . Meanwhile, the PANI capacitor exhibits perfect pseudocapacitance behavior at low scan rates (up to 50 mV s −1 ) and great capacitive characteristics at high scan rates up to 5000 mV s −1 . More impressively, this supercapacitor displays excellent tolerance against mechanical deformation, including bending, folding and stretching, even to 20%, with a well‐maintained capacitance. This stretchable PANI supercapacitor with a high rate capability provides a facile and cost‐effective route for the design of flexible energy storage devices. © 2020 Society of Chemical Industry