Electrical properties of an acrylic elastomer‐LiClO4 complex as a polymeric solid electrolyte

Abstract

AbstractA polymeric solid electrolyte having a low glass transition temperature, obtained by complexing LuCIO4 with an acrylic elastomer (AR) containing ester groups in the side chains, shows a conductivity of 2,0 · 10−4 S/cm (LiCIO4: 2,1 mmol/g AR, film thickness: ca. 100–300 μm) at 80°C. From the relationship between ionic conductivity and LiCIO4 concentration, we conclude that LiCI4 dissociates in the acrylic elastomer to produce carrier ions. We also suggest, in regard to temperature characteristics of ionic conductivity and reciprocal dielectric relaxation time, that the driff of ions is related to the motion of acrylic elastomer chains. The carrier mobility in the acrylic elastomer‐LiCIO4 complex was measured by using the voltage polarity reversing method. The carrier mobility increased with increasing LiCIO4 concentration and temperature.