Proton conducting polymer blend electrolytes based on MC: FTIR, ion transport and electrochemical studies
Document Type
Article
Publication Date
11-1-2022
Abstract
In this work, the free-standing plasticized solid polymer electrolyte films were made utilizing methylcellulose (MC) and dextran (DN) doped with ammonium fluoride (NH4F) and plasticized with glycerol by a typical solution casting approach. Based on the characterizations, MC-DN-NH4F electrolyte has been shown to improve the structural, electrical, and electrochemical proper-ties resulting from the dispersion of glycerol plasticizer. The electrochemical impedance spectroscopy (EIS) measurement for the highest inclusion of plasticizer revealed a conductivity of 2.25 x 10-3 S/cm. The electrical equivalent circuit (EEC) model has established the circuit elements for each electrolyte. The variation trend of dielectric constant and DC conductivity was matched and confirmed by the EIS data. The fourier transform infrared (FTIR) analysis displayed credible confirmation of polymers-ion-plasticizer interactions. The dielectric study is extra highlighted the conductivity behavior. The dielectric constant and loss (e0 and e00) quantities were reported to be high at low frequencies. On the other hand, the irregular shape of the imaginary part of modulus (M ``) spectra denotes the non-Debye behaviors of relaxation. The ion transference number (tion) value for the maximum plasticized system is 0.944, where the ions are the primary components for the charge transfer process. Stability of the highest conducting sample is determined to be 1.6 V, using linear sweep voltammetry (LSV). (C) 2022 The Author(s). Published by Elsevier B.V. on behalf of King Saud University.
Keywords
Polymer blends, Ammonium salt, FTIR study, EIS and EEC modeling, TNM and LSV
Divisions
Science
Funders
Princess Nourah bint Abdulrahman University [PNURSP2022R58],University of Human Development,Science and Technology Development Fund (STDF) Ministry of Higher Education & Scientific Research (MHESR) [FRGS/1/2019/STG07/UM/02/6],University of Sulaimani
Publication Title
Arabian Journal of Chemistry
Volume
15
Issue
11
Publisher
Elsevier
Publisher Location
RADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS