Poly[oligo(oxyethylene) methacrylate-co-sodium methacrylate] as a polymeric solid electrolyte with sodium ionic conduction

Abstract

Poly[oligo(oxyethylene) methacrylate-co-sodium methacrylate was prepared as a polymeric solid electrolyte which enables sodium single ionic conduction. A methanol solution of the mixture of oligo(oxyethylene) methacrylate and sodium methacrylate was cast and polymerized on a Teflon® plate. The film obtained showed a conductivity of 4.0×10−7 S cm−1 at 80°C. The conductivity of the films depended on the sodium methacrylate content. Temperature dependence of the conductivity was analyzed as WLF-type behaviour. The ionic conduction mechanism of this film was found to be deeply affected by the segmental motion of the matrix polymer. This was also confirmed by the Vogel–Tammann–Fulcher plot for ionic conductivity. © 1986 The Society of Polymer Science, Japan.