碱性直接甲醇燃料电池含氟阴离子交换膜的制备及性能研究  

Novel Anion Exchange Membranes Base on Copolymer of 2-(Diethylamino) Ethyl Methacrylate and Fluoro-Polyacrylate for Alkaline Direct Methanol Fuel Cells

作　　者：张燕梅[1] 方军[1] 严格[1] 庄永泽[1] 

机构地区：[1]厦门大学化学化工学院化学工程与生物工程系,福建厦门361005

出　　处：《电化学》2011年第1期73-79,共7页Journal of Electrochemistry

基　　金：国家863计划项目(2008AA05Z107);国家自然科学基金项目(20876129)资助

摘　　要：以甲基丙烯酸二甲基氨基乙酯和甲基丙烯酸三氟乙酯为单体,经过自由基聚合反应、成膜和碱化3个步骤制备氢氧型的DMAEMA/TFMA聚合物阴离子交换膜,系统表征该聚合物膜的结构和性能.结果表明:室温下其电导率可达10-2 S.cm-1;该膜的甲醇渗透系数低于10-7 cm2.s-1;以该膜组装的单电池在室温下的最大功率密度为43.2 mW/cm2,在燃料电池中有良好的应用前景.Anion exchange membrane fuel cells,which use anion exchange membranes as polyelectrolytes,have attracted more and more research interests recently.In this work,a series of hydroxyl-conducting anion-exchange membranes based on the copolymer of 2-（Diethylamino）ethyl methacrylate and fluoro-polyacrylate were prepared by radical polymerization,and their potential applications in alkaline fuel cells were assessed.It was shown that the ionic conductivity of the membranes reached 10-2 S·cm-1 at room temperature,while the methanol permeability was lower than 10-7 cm2·s-1.The maximum power density of fuel cell assembled with this membrane was achieved to be 43.2 mW·cm-2 at room temperature,indicating possible application of this membrane in alkaline fuel cells.

关 键 词：阴离子交换膜 燃料电池 甲基丙烯酸二甲基氨基乙脂 含氟丙烯酸酯 

分 类 号：TM911.4[电气工程—电力电子与电力传动]