Synthesis and Characterization of Reduced Graphene Oxide for Supercapacitor Application with a Biodegradable Electrolyte

Rag, Adarsh and Selvakumar, M and Bhat, Somashekara and Chidangil, Santhosh and Shounak, De (2020) Synthesis and Characterization of Reduced Graphene Oxide for Supercapacitor Application with a Biodegradable Electrolyte. Journal of Electronic Materials, 49 (2). pp. 985-994. ISSN 0361-5235

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Abstract

The possibility of synthesizing a proton-conducting biopolymer electrolyte of polyvinyl alcohol (PVA) doped with 1-ethyl-3-methylimidazolium ethyl sulphate ([EMIM][EtSO4]) ionic liquid and ammonium acetate (CH3COONH4) by solvent casting has been investigated. The ionic conductivity of electrolyte membrane increased with addition of IL and fairly good ionic conductivity of 6.56 9 10�4 S cm �1 has been attained. The conductivity studies of the biopolymer electrolyte membrane have been carried out in coplanar configuration. Graphene oxide (GO) and reduced graphene oxide (rGO) have been synthesized by a chemical method. The prepared rGO has been characterized using ultraviolet–visible (UV–Vis) absorption spectroscopy, x-ray diffraction, Raman and x-ray photoelectron spectroscopy analysis. The surface area of rGO has been increased from 2.69 m2 g�1 to 203.78 m2 g�1. In this work, a supercapacitor with a symmetric electrode has been fabricated using PVAdoped ionic liquid as a biopolymer electrolyte and rGO as electrode materials. Its electrochemical performance has been verified, and the device exhibited a good specific capacitance of 138 F g�1. This combination was found to be very useful to improve the capacitance of supercapacitor

Item Type: Article
Uncontrolled Keywords: Reduced graphene oxide, modified Hummers’ method, bio-polymer electrolyte, supercapacitor
Subjects: Engineering > MIT Manipal > Chemistry
Engineering > MIT Manipal > Electronics and Communication
Depositing User: MIT Library
Date Deposited: 07 May 2020 06:23
Last Modified: 07 May 2020 06:23
URI: http://eprints.manipal.edu/id/eprint/155102

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