Conductivity and stability properties of solid polymer electrolyte based on PEO-PAN + LiPF 6 for energy storage

Abstract

Ionically conducting solid polymer electrolyte (SPE) films has drawn considerable attention because of its many appealing properties such as flexibility, design mouldability, role as leakage free solid separator/electrolyte in devices and improved safety hazard. Polymer blend electrolytes are prepared for various concentration of salt ( ) with the constant ratio (0.5 gm) of each PEO and PAN polymers (blend polymer) using solution casting technique. The maximum ac ionic conductivity value is found to be of the order of ~10-5 S cm-1 for the film having = 4 support the applicability of films for the energy storage/conversion device application. The thermo gravimetric analysis (TGA) result shows the stability of the prepared films for use in the device application. Finally the cyclic voltammetry experiment was performed to see the voltage sustainability (~4 Volt) of prepared free standing solid polymeric films for the device applications.