Study on polymer electrolyte of solid state lithium battery

Abstract In this paper, an acrylate random copolymer (ARC) novel chemical solid state lithium battery electrolyte was developed by a chemical engineering synthesis method. By adding inorganic fillers and optimizing the preparation process of the electrolyte, the ionic conductivity and electrochemical properties were successfully improved. The experimental results show that the ionic conductivity of the ARC-based electrolyte is 3.5×10 −4 S/cm at room temperature, and it has low activation energy and a good lithium-ion migration number. The electrolyte shows excellent cycle stability and rate performance in NCM811|Li full battery, showing the application potential in high safety and high energy density solid state lithium battery.