Physical and electrical property studies on sodium (Na+) – Ion conducting Nano–Composite Polymer Electrolyte membranes

Abstract

Present work reports that Polymer Electrolyte Membranes: [97PEO: 3NaCOOCH3] dispersed with ceramic filler SiO2 have been synthesized using the hot-press casting technique. Ion transport properties have been evaluated in terms of the essential ionic conductivity (σ) and total ionic (tion) / cationic (t+) transference numbers using different ac/dc techniques to evaluate its usefulness in all-solid-state battery applications. Structural/thermal properties have been characterized using X-ray Diffraction (XRD), Differential Scanning Calorimetry (DSC) and Thermal Gravimetric Analysis (TGA) techniques. The thermal laminated pouch cell has been fabricated and tested by sandwiching the best optimized NCPE film between MnO2 cathode and Graphite anode. Cyclic Voltammetry study of NCPE film exhibits good electrochemical behaviour and is more suitable for battery fabrication.