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Enhanced Supercapacitor Performance Using Electropolymerization of Self-Doped Polyaniline on Carbon Film

1
Department of Chemical and Materials Engineering, National University of Kaohsiung, Kaohsiung 81148, Taiwan
2
Department of Environmental Engineering, Kun Shan University, Tainan71070, Taiwan
3
Department of Materials Science and Engineering, I-Shou University, Kaohsiung 84001, Taiwan
*
Author to whom correspondence should be addressed.
Nanomaterials 2018, 8(4), 214; https://doi.org/10.3390/nano8040214
Received: 8 February 2018 / Revised: 23 March 2018 / Accepted: 27 March 2018 / Published: 31 March 2018
(This article belongs to the Special Issue Electrochemically Engineering of Nanoporous Materials)
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Abstract

In this work, we electrochemically deposited self-doped polyanilines (SPANI) on the surface of carbon-nanoparticle (CNP) film, enhancing the superficial faradic reactions in supercapacitors and thus improving their performance. SPANI was electrodeposited on the CNP-film employing electropolymerization of aniline (AN) and o-aminobenzene sulfonic acid (SAN) comonomers in solution. Here, SAN acts in dual roles of a self-doped monomer while it also provides an acidic environment which is suitable for electropolymerization. The performance of SPANI−CNP-based supercapacitors significantly depends upon the mole ratio of AN/SAN. Supercapacitor performance was investigated by using cyclic voltammetry (CV), galvanostatic charge and discharge (GCD), and electrochemical impedance spectroscopy (EIS). The optimal performance of SPANI−CNP-based supercapacitor exists at AN/SAN ratio of 1.0, having the specific capacitance of 273.3 Fg−1 at the charging current density of 0.5 Ag−1. View Full-Text
Keywords: supercapacitor; self-doped polyaniline; carbon-nanoparticle film; electropolymerization; cyclic voltammetry supercapacitor; self-doped polyaniline; carbon-nanoparticle film; electropolymerization; cyclic voltammetry
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Wang, P.-H.; Wang, T.-L.; Lin, W.-C.; Lin, H.-Y.; Lee, M.-H.; Yang, C.-H. Enhanced Supercapacitor Performance Using Electropolymerization of Self-Doped Polyaniline on Carbon Film. Nanomaterials 2018, 8, 214.

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