Proton conducting solid polymer electrolytes based carboxymethyl cellulose doped ammonium chloride: ionic conductivity and transport studies

Abstract

The present work focuses on the preparation of solid polymer electrolytes (SPEs) based carboxymethyl cellulose, CMC as host polymer doped with ammonium chloride, AC (0–20 wt.%) as ionic dopant via solution casting technique. The ionic conductivity and transport parameter of SPEs films were analyzed using electrical impedance spectroscopy in the frequency range of 1 Hz–50 MHz at selected temperature of 303–383 K. The highest ionic conductivity of 1.43×10−3 S/cm was obtained at 16 wt.% AC. Temperature-dependent ionic conductivity showed that the ionic conductivity obeys Arrhenius rule where R2~1 and thermally assisted. Transport studies showed that the ionic conductivity was influenced by the ionic mobility and diffusion coefficient