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

S. Adarsh Rag, M. Selvakumar, Somashekara Bhat, Santhosh Chidangil, Shounak De

Research output: Contribution to journalArticle

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 × 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 PVA-doped 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.

Original languageEnglish
JournalJournal of Electronic Materials
DOIs
Publication statusPublished - 01-02-2020

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electrochemical capacitors
Oxides
Graphene
Electrolytes
graphene
Biopolymers
electrolytes
biopolymers
oxides
synthesis
Polyvinyl Alcohol
Ionic Liquids
polyvinyl alcohol
Polyvinyl alcohols
Ionic conductivity
Ionic liquids
ion currents
Capacitance
capacitance

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Materials Chemistry

Cite this

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title = "Synthesis and Characterization of Reduced Graphene Oxide for Supercapacitor Application with a Biodegradable Electrolyte",
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 × 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 PVA-doped 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.",
author = "{Adarsh Rag}, S. and M. Selvakumar and Somashekara Bhat and Santhosh Chidangil and Shounak De",
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AU - Adarsh Rag, S.

AU - Selvakumar, M.

AU - Bhat, Somashekara

AU - Chidangil, Santhosh

AU - De, Shounak

PY - 2020/2/1

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