Mechanistic Insight of Ionic Conduction on Agarose and Poly(1-vinylpyrrolidone-co-vinyl-acetate) [P(VP-co-VAc)] based Polymer Gel Electrolytes by Incorporating Lithium Bis(oxalato) Borate [LiBOB]

• Published in: International Journal of Electrochemical Science
• Main Author: Ari M.S.S.; Abidin S.Z.Z.; Taib M.F.M.; Yahya M.Z.A.; Ali N.I.; Rafi N.S.M.
• Format: Article
• Language: English
• Published: Electrochemical Science Group 2022
• Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85132223806&doi=10.20964%2f2022.07.47&partnerID=40&md5=42ebe0076df8857946dcbfd3d001e903

This study focuses on the preparation and characterization of polymer gel electrolyte (PGE) based on two different host polymers in a separated system: agarose [PGEagar] and P(VP-co-VAc) [PGEvpvac]. In this work, lithium LiBOB salt was incorporated as the source of charge carriers. PGE was prepared by mixing various host polymer ratios with a dimethylsulfoxide (DMSO) solvent. The ionic conductivity of polymer gel electrolyte was calculated using the bulk resistance value gained from the complex impedance plot in the frequency range 100 Hz-1 MHz and temperature (T) range 298-373 K. The plot of log σ versus 1000/T obeys Arrhenius' rule where it indicates that the ionic conductivity of PGE was thermally assisted. In comparison, PGEagar and PGEvpvac had demonstrated the same transport mechanism in a similar experimental configuration. The conduction mechanism in PGEs in both systems can be explained using the small polaron hopping (SPH) model. © 2022. The Authors. Published by ESG (www.electrochemsci.org). This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/4.0/).