Fabrication of high performance energy storage EDLC device from proton conducting methylcellulose: Dextran polymer blend electrolytes

Aziz, Shujahadeen B. and Brza, M. A. and Mishra, Kuldeep and Hamsan, M. H. and Karim, Wrya O. and Abdullah, Ranjdar M. and Abdul Kadir, Mohd Fakhrul Zamani and Abdulwahid, Rebar T. (2020) Fabrication of high performance energy storage EDLC device from proton conducting methylcellulose: Dextran polymer blend electrolytes. Journal of Materials Research and Technology-JMR&T, 9 (2). pp. 1137-1150. ISSN 2238-7854, DOI https://doi.org/10.1016/j.jmrt.2019.11.042.

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This paper reports Methylcellulose:Dextran (MC:Dex) polymer blend based electrolyte system with NH4I salt for electrical double layer capacitor (EDLC) application. The structural and electrochemical properties of the electrolyte systems were investigated using X-ray diffraction (XRD), Fourier transformed infra-red (FTIR) spectroscopy, Field emission scanning electron microscope (FESEM), impedance spectroscopy, transference number measurement (TNM) and linear sweep voltammetry (LSV). The FTIR studies revealed the complexation between MC:Dex polymer blend and NH4I salt. The reduction in the crystallinity of MC:Dex polymer blend with the increasing salt concentration was observed in XRD analysis. The electrolyte system was observed to be predominantly ionic in nature. The electrolyte composition with 40 wt.% of NH4I showed the maximum ionic conductivity as 1.12 x 10(-3) S/cm with electrochemical stability window of 1.27 V. The highest conducting composition of the electrolyte system was used to prepare EDLC with activated carbon electrodes. The EDLC exhibited initial specific capacitance as 79 F/g, energy density as 8.81 Wh/kg and power density as 1111.1 W/kg at a current density of 0.2 mA/cm(2). (C) 2019 The Authors. Published by Elsevier B.V.

Item Type: Article
Funders: Ministry of Higher Education and Scientific Research-Kurdish National Research Council (KNRC), Kurdistan Regional Government/Iraq, University of Sulaimani, Komar Research Center (KRC), Komar University of Science and Technology
Uncontrolled Keywords: Polymer blend electrolytes; XRD and FTIR study; Impedance spectroscopy; TNM and LSV analysis; Cyclic voltammetry; EDLC
Subjects: Q Science > QC Physics
Divisions: Centre for Foundation Studies in Science
Depositing User: Ms Zaharah Ramly
Date Deposited: 05 Oct 2023 02:17
Last Modified: 05 Oct 2023 02:17
URI: http://eprints.um.edu.my/id/eprint/36835

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