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

doi:10.1007/s11664-019-07853-9

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^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

24 Citations (Scopus)

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 language	English
Pages (from-to)	985-994
Number of pages	10
Journal	Journal of Electronic Materials
Volume	49
Issue number	2
DOIs	https://doi.org/10.1007/s11664-019-07853-9
Publication status	Published - 01-02-2020

All Science Journal Classification (ASJC) codes

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

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10.1007/s11664-019-07853-9

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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.",

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AU - Selvakumar, M.

AU - Bhat, Somashekara

AU - Chidangil, Santhosh

AU - De, Shounak

PY - 2020/2/1

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AB - 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.

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

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