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Vol. 32 No. 12 (2020): Vol 32 Issue 12, 2020

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Preparation of Polyaniline/Graphene Oxide Thin Films Microelectrodes through Electrochemical Reduction at Different Potential Range for High-Performance Supercapacitors

https://doi.org/10.14233/ajchem.2020.22893%20
Mukta Das
Department of Chemistry, Mawlana Bhashani Science and Technology University, Santosh, Tangail-1902, Bangladesh
Ashis K. Sarker
Department of Chemistry, Mawlana Bhashani Science and Technology University, Santosh, Tangail-1902, Bangladesh

Corresponding Author(s) : Ashis K. Sarker

ashischemru@gmail.com

Asian Journal of Chemistry, Vol. 32 No. 12 (2020): Vol 32 Issue 12, 2020

Abstract

In this article, the fabrication and performance of supercapacitors prepared through electrochemical reduction applied at different voltage range from polyaniline/graphene oxide (PANi/GO) thin films, which are renewable materials with an excellent yield of energy conversion is reported. The PANi/GO thin film was reduced electrochemically with different potential windows, scan rate and number of cycles which was acquired using layer-by-layer (LBL) assembly method. The resultant electrodes displayed various specific capacitances after pre-reduction with different conditions.The influence of the electrochemical reduction was investigated by Raman spectroscopy and X-ray photoelectron spectroscopy for capacitance performance. The optimum conditions were explored for supercapacitor application and an elevated specific capacitance 2619 F cm-3 (areal capacitance 18.38 mF cm-2) at 1 mV s-1 obtaining the film reduced with applied potential of -0.87 to -0.5 V. This study could introduce the new possibilities for the improvement of the electrochemical reduction effects to the composite materials for high-performance supercapacitors.

Keywords

PANi/ERGO thin films Electrochemical reduction Charge/discharge Supercapacitors Raman spectroscopy
Das, M., & K. Sarker, A. (2020). Preparation of Polyaniline/Graphene Oxide Thin Films Microelectrodes through Electrochemical Reduction at Different Potential Range for High-Performance Supercapacitors. Asian Journal of Chemistry, 32(12), 3047–3056. https://doi.org/10.14233/ajchem.2020.22893
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