Polymer electrolytes based on acrylonitrile-methyl methacrylate-styrene terpolymers for rechargeable lithium-polymer batteries

摘要

New polymer electrolytes composed of acrylonitrile-methyl methacrylate-styrene (AMS) terpolymer, 1 M LiClO{sub}4-EC/PC, and an inorganic filler have been prepared. Depending on the composition of the components, these electrolytes exhibit a widerange of mechanical and electrical properties. The ionic conductivity reaches 1.4×10{sub}-3 S/cm in a polymer electrolyte containing 27% AMS terpolymer; 64%LiC1O{sub}4-EC/PC, and 9% silanized fumed silica at room temperature to give homogeneous filmswhich exhibit good mechanical properties. These systems showed good compatibility with lithium electrodes and a sufficient electrochemical stability to allow safe operation in the rechargeable lithium batteries. The capacity and cycling performance of aLi/polymer electrolyte/Li{sub}1.03Mn{sub}2O{sub}4 solid-state cell employing AMS-based polymer electrolyte were investigated.