Proton transport and dielectric properties of high molecular weight polyvinylpyrrolidone (PVPK90) based solid polymer electrolytes for portable electrochemical devices

• Published in: Journal of materials science. Materials in electronics 2019-06, Vol.30 (12), p.11735-11747
• Main Authors: Regu, T., Ambika, C., Karuppasamy, K., Rajan, Hashikaa, Vikraman, Dhanasekaran, Jeon, Ji-Hoon, Kim, Hyun-Seok, Ajith Bosco Raj, T.
• Format: Article
• Language: English
• Subjects: Characterization and Evaluation of Materials; Chemistry and Materials Science; Conducting polymers; Dielectric properties; Differential scanning calorimetry; Electrolytes; Electrolytic cells; Fourier transforms; Functional groups; Glass transition temperature; Infrared spectra; Materials Science; Methanesulfonic acid; Molten salt electrolytes; Optical and Electronic Materials; Oxidation; Polymers; Polymethyl methacrylate; Polyvinylpyrrolidone; Portable equipment; Protons; Solid electrolytes; Thermal stability; Thermogravimetry; Transport
• ISSN: 0957-4522; 1573-482X
• DOI: 10.1007/s10854-019-01535-2

A simple solution cast route was used to prepare proton conducting solid polymer electrolytes using poly(methyl methacrylate) and poly(vinylpyrrolidone) as polymer hosts and methanesulfonic acid as a proton provider. Fourier transform infrared spectra confirmed functional group interactions between polymers, blended polymers, and acid. Polymer glass transition temperature shifted with increasing acid content in the blend electrolytes provide thermal stability up to 290 °C, verified by differential scanning calorimetry and thermogravimetry analyses. Proton conductivity achieved = 1.16 × 10 −4  S/cm at room temperature with an ionic transport number of 0.98. Discharge profiles verified oxidation current