羟乙基纤维素/甲基咪唑硫酸氢盐共混质子交换膜的制备与表征  

Preparation and Characterization of Blended Proton Exchange Membranes of Hydroxyethyl Cellulose/Methyl Imidazolium Hydrogen Sulfate

作　　者：胡乃天 刘欣 张仕凯 许飞扬 伍勇[1] HU Nai-tian;LIU Xin;ZHANG Shi-kai;XU Fei-yang;WU Yong(School of Chemical Engineering,Sichuan University,Sichuan Chengdu 610065,China)

机构地区：[1]四川大学化工学院,四川成都610065

出　　处：《辽宁化工》2020年第3期221-223,共3页Liaoning Chemical Industry

基　　金：大学生创新创业训练计划国家级项目(201910610093)。

摘　　要：质子交换膜是氢燃料电池的重要组成部分之一。本文将甲基咪唑硫酸氢盐质子化离子液体与羟乙基纤维素共混,通过溶液浇铸法制备了均匀透明的质子交换膜。交流阻抗测试表明,共混膜的传导率随着离子液体比例的增加而增大,70%(wt)时传导率达到2.9×10^-3 s/cm。质子传导率随使用温度的变化基本服从Arrhenius定律,表明质子主要通过跳跃机理实现传导,传导活化能随着离子液体比例的增加而降低。Proton exchange membrane is one of the most important components of hydrogen fuel cell.Transparent proton exchange membranes with different ionic liquid proportions were prepared from protic methyl imidazole sulfate ionic liquid and hydroxyethyl cellulose by the solution cast method.Electrochemical characterization showed that the conductivity of the blended membranes increased with the increase of ionic liquid content,and it reached 2.9×10^-3 s/cm when the ionic liquid proportion was 70%(wt).The temperature dependence of the proton conductivity approximately followed the Arrhenius law,indicating the proton conduction was dominated by the hopping mechanism.Activation energy of the proton conduction decreased with the increase of the ionic liquid proportion.

关 键 词：质子交换膜 甲基咪唑硫酸氢盐 羟乙基纤维素 共混 

分 类 号：TQ352.72[化学工程]