高分子凝胶电解质及其在电色Smart窗中的应用

Polymeric Gel Electrolyte and Its Application to Electrochromic Smart Window

研究了高分子凝胶电解质高氯酸锂－碳酸丙烯酯－聚甲基丙烯酸甲酯体系（ＬｉＣｌＯ４－ＰＣ－ＰＭＭＡ）的离子导电性、导电机理以及在电色Ｓｍａｒｔ窗中的应用．其离子电导率与温度的关系服从Ｖｏｇｅｌ－Ｔａｍｍａｎｎ－Ｆｕｌｃｈｅｒ方程，并与体系的ＰＭＭＡ质量百分数、玻璃化温度（Ｔｇ）、碱金属盐的浓度等有关．当ＬｉＣｌＯ４浓度为０．５ｍｏｌ／Ｌ，ＰＭＭＡ＝３５％时，电解质具有良好的粘附性、光学透明度及较高的室温离子电导率（σ＝８．７５×１０－４Ｓ／ｃｍ）．由其组装成的全固态电色Ｓｍａｒｔ窗具有良好的光谱特性，可见光调制范围为４０％～６０％；具有良好的光开关特性，响应时间仅为５ｓ．

The ionic conductivity, conduction mechanism and application to electrochromic Smart windows of polymeric gel electrolyte LiClO4propylene carbonatepolymethyl methacrylate(LiClO4PCPMMA) have been investigated. The ionic conductivity as a function of temperature followed the empirical VogelTammannFulcher equation and depended on the weight content and Tg of PMMA, and concentration of LiClO4. The electrolyte had a good adhesivity, good transparency and high ionic conductivity at room temperature (σ=875×10-4 S/cm), when concentration of LiClO4 was 05 mol/L and weight percentage of PMMA was 35%. The assembled electrochromic Smart window had good spectral behavour, at 6333 nm its optical modulation was 40%￣60%. Its optical switching time only 5 s.