Hot-pressed sodium ion conducting solid polymer electrolytes: Preparation and materials characterization

Abstract

Preparation and materials characterization studies of a new sodium ion conducting solid polymer electrolytes (SPEs): (1-x) PEO:xNaF where 0 ≤ x ≤ 50 wt%, are reported. The present SPEs films have been synthesized by recently developed dry/hot-press method. The highest ionic conductivity (σ ∼ 4.3 × 10−7 S.cm−1) have been observed at 30 wt% of NaF i.e. the composition: (70PEO:30NaF). Materials characterization have been studied with the help of x-ray diffraction (XRD), fourier transform infrared (FTIR) and differential scanning calorimetric (DSC) analysis. Measurements of the ionic transference number (tion) have been made at room temperature to help understand the structure of the system's ionic nature.