Biodegradable pectin- guar gum blend electrolyte for solid state lithium ion batteries

Abstract

Solid-state batteries have arisen as a capable substitute to existing Li-ion batteries and the future storage market can be powered by considering their greater energy outputs and improved safety. Among the various solid- state electrolytes, lithium polymer electrolytes have received more attention. However, a huge challenge is finding a solid electrolyte with high ionic conductivity and devoid of dropping the mechanical strength is still on process. Hence, the present study aims to prepare one such electrolyte using lithium salt (LiTFSI) doped in pectin and guargum (biopolymers) blended mixture which has low glass transition temperature and good flexibility by the solution casting technique. The prepared lithium solid polymer electrolyte was characterized using XRD, FT-IR Spectrophotometer, AC Impedance spectroscopy, TG/DTA and 3D Optical Laser Profilometry. The results demonstrate that the solid polymer electrolyte systems are eligible for next-generation high energy density all-solid-state lithium ion batteries.