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Open AccessArticle

Polyaniline Nanotubes/Carbon Cloth Composite Electrode by Thermal Acid Doping for High-Performance Supercapacitors

by Jia Hui 1, Daoxin Wei 1, Jing Chen 1 and Zhou Yang 2,*
1
Engineering Technology and Materials Research Center, China Academy of Transportation Sciences, Beijing 100029, China
2
Department of Material Engineering, Jiangsu University of Technology, Changzhou 213001, China
*
Author to whom correspondence should be addressed.
Polymers 2019, 11(12), 2053; https://doi.org/10.3390/polym11122053
Received: 21 November 2019 / Revised: 7 December 2019 / Accepted: 9 December 2019 / Published: 11 December 2019
(This article belongs to the Special Issue Polymer-Based Soft Electronics)
Carbon materials have been widely used in designing supercapacitors (SCs) but the capacitance is not ideal. Herein, we synthesize polyaniline (PANI) nanotubes on the basis of a carbon cloth (CC) through a one-step self-degradation template method, and fabricate a [email protected] NTs-H ([email protected] nanotubes doping at high temperature) composite electrode by thermal acid doping. The [email protected] NTs-H electrode obviously exhibits better electrochemical performance with a gravimetric capacitance of 438 F g−1 and maintains 86.8% after 10,000 cycles than the [email protected] NTs-R ([email protected] nanotubes doping at room temperature) electrode. Furthermore, we assemble a flexible solid state supercapacitor (FSSC) device with the as-prepared [email protected] NTs-H composite electrodes, showing good flexibility and outstanding electrochemical performances with a high gravimetric capacitance of 247 F g−1, a large energy density of 21.9 Wh kg−1, and a capacitance retention of 85.4% after 10,000 charge and discharge cycles. Our work proposes a novel and easy pathway to fabricate low-cost FSSCs for the development of energy storage devices. View Full-Text
Keywords: polyaniline nanotubes; composite electrode; thermal acid doping; flexible solid state supercapacitors polyaniline nanotubes; composite electrode; thermal acid doping; flexible solid state supercapacitors
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MDPI and ACS Style

Hui, J.; Wei, D.; Chen, J.; Yang, Z. Polyaniline Nanotubes/Carbon Cloth Composite Electrode by Thermal Acid Doping for High-Performance Supercapacitors. Polymers 2019, 11, 2053.

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