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

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 1.43x10(-3) S/cm was obtained at 16 wt.% AC. Temperature-dependent ionic conductivity showed that the ionic conductivity obeys Arrhenius rule where R-2 similar to 1 and thermally assisted. Transport studies showed that the ionic conductivity was influenced by the ionic mobility and diffusion coefficient.