高分子凝胶电解质高氯酸锂 - 碳酸乙二醇酯 - 聚甲基丙烯酸甲酯体系的研究

研究了高分子凝胶电解质高氯酸锂 碳酸乙二醇酯 聚甲基丙烯酸甲酯体系（ＬｉＣｌＯ４ ＥＣ ＰＭＭＡ）的离子导电性、热稳定性和电化学稳定性．该体系的离子电导率与温度的关系服从ＶＴＦ方程．当ＬｉＣｌＯ４的浓度ＣＬｉＣｌＯ４＝１５ｍｏｌ／Ｌ、ＰＭＭＡｗｔ％（质量百分数）＝３５时，其离子电导率达极大值δ＝１９２×１０－３Ｓ／ｃｍ，光学透明度高，在空气中的稳定性较好，且具有一定的粘附性．该体系在１０２℃以下的热稳定性较高（失重率为３２８％）；电化学稳定性窗口为４５Ｖ，可满足固态电致变色“Ｓｍａｒｔ”窗的要求．

STUDIES ON POLYMERIC GEL ELECTROLYTE OF LiClO-4-ETHYLENE CARBONATE-PMMA

Conductivity,thermal stability and electrochemical stability of a polymeric gel electrolyte of LiClO 4 ethylene carbonate PMMA were measured.The inonic conductivity as a function of temperature followed the Vogel tammann fulcher equation.When LiClO 4 concentration was 15mol/L,PMMA wt% was 35,the electrolyte had the highest ionic conductivity,δ=192×10-3S/cm,good transparency and stability in air and some adhesivity.Thermal stability was high(wt% change was 328) under 102℃.It was electrochemically stable,ie.ΔV=4 5V.So it can satisfy the needs of solid state eletrochromic “Smart” windows.