Comparison of Li-ion conduction of Neem gum and Commiphora gum based biopolymer blend electrolytes

Abstract

Increased awareness over environmental safety has led to production of biocompatible materials in the area of energy storage. In the present work biodegradable polymer blend electrolytes based on two different weight percentages of Polyvinyl alcohol with Neem gum(NG) and Commiphora gum(CG) are been investigated for their Li-ion conductivity. The electrolytes were prepared using traditional and cost effective solution casting technique. Structural and vibrational properties of the prepared biopolymer blend electrolytes reveal the amorphous nature and enhanced incorporation of Li-ions inside the polymer matrix. Ionic conductivity reflected from AC impedance analysis is found to be 4.83× 10−5 S/cm for PVA: NG: LiClO4 and 1.418×10−5 S/cm for PVA:CG:LiClO4 blend in room temperature respectively. Frequency plateaus and relaxation time measurements display the easier ionic movement inside the prepared polymer blend. The derived results depict the prepared electrolytes applicability in high safety green energy storage systems.