Enhanced Conductivity of Corn Starch Polymer Film Doped with Sodium Phosphate

Abstract

Abstract Solid polymer electrolyte (SPE) is one of the new invention components which can replace the traditional liquid electrolyte in a conventional battery system that sometimes experience some drawbacks, specifically is a leakage problem. Solid polymer electrolyte was successfully prepared using corn starch as the host and sodium phosphate (Na3PO4) as an ionic dopant which both of them mixed in a combined solvent of distilled water and glycerin via a solution casting technique. FTIR was confirming that the complex films were successfully prepared based on the coexistence of the material peaks (starch and Na3PO4). The highest ionic conductivity of 4.62 x 10−4 Scm−1 was obtained at room temperature (303K) for the sample containing 40 wt. % of Na3PO4. Based on the results, this SPE is proposed to have great potential in current and future energy storage applications.