Synthesis of Hot-pressed Solid Polymer Electrolytes: (1-x) PEO: x NaBr

Abstract

Synthesis of a new Na+ ion conducting hot-pressed Solid Polymer Electrolytes (SPE): (1-x) PEO: x NaBr, where 0 < x < 50 in wt.
%, has been reported. SPE films have been casted using a hot-press technique in place of the traditional solution cast method. A conductivity enhancement of the two orders of magnitude was achieved in SPE film composition: [70PEO: 30NaBr]. Polymer-salt complexation has been explained with the help of x-ray diffraction (XRD) technique. The Na+ ion conduction in the present SPEs have been discussed on the basis of experimental measurements on their ionic conductivity (σ) and ionic mobility (μ) at room temperature.