交联聚离子液体的合成及质子传导性能研究

Construction of cross-linked poly(ionic liquid)s as high proton conductive materials

本文设计合成了四种具有超高质子传导性能的交联聚离子液体材料。采用红外、元素分析、X射线光电子能谱和扫描电镜等表征手段对所合成材料的化学组成及结构进行了解析;采用热分析技术对材料的热稳定性进行了研究;系统研究了在不同条件下所合成材料的质子传导性能。研究结果表明:所合成的系列聚离子液体材料具有交联的三维结构;优异的热稳定性,其分解温度均超过253℃,最高分解温度可达314℃。在80℃和98%相对湿度(RH)下,这些材料的最大质子电导率为1.89×10^(-2) S·m^(-1)。该类聚离子液体材料超高的质子传导性能和简易的合成工艺,为新型质子传导材料的发展提供了新的思路。

In this work,four cross-linked poly(ionic liquid)s were prepared and comprehensively characterized.FT-IR,element anlysis,XPS and SEM technologies were used to measure the structure and chemical components of those materials.Thermostability of the materials were strudied by TG analysis.Futhremore,the proton conductivlities were investigated systematically.The results indicated that those materials have three-dimentional cross-linked strucutrure and excellent thermostabilities.All the decompotion temperatures are higher than 253℃,and the highest value is up to 314℃.The greatest conductivity of these materials is up to 1.89×10^(-2) S·m^(-1) at 80℃and 98%relative humidity,which is comparable to most of the well-known high proton conductive materials.The high proton conductivlity and simple preapration methods of these poly(ionic liquid)s provide a new approach to develop novel proton conducting materials.