一种可高温运行的离子液体电解质燃料电池  

Ionic Liquid as Fuel Cell Electrolyte at Elevated Temperature

作　　者：高建[1,2,3] 刘建国[1,2,3] 刘文明[1,3] 叶季蕾[1,2,3] 周毅[1,3] 顾军[1,3] 于涛[1,3] 邹志刚[1,3] 

机构地区：[1]南京大学物理系环境材料与再生能源研究中心,南京210093 [2]南京大学材料科学与工程系,南京210093 [3]南京大学固体微结构物理国家重点实验室,南京210093

出　　处：《无机化学学报》2009年第11期2016-2020,共5页Chinese Journal of Inorganic Chemistry

基　　金：国家973项目(No.2007CB613300);国家自然科学基金(No.20906045;50732004);江苏省自然科学基金(No.BK2008251)资助

摘　　要：本文采用N-甲基咪唑为原料通过溴盐的中间步骤合成了1-乙基-3甲基咪唑磷酸二氢盐([Emim]H2PO4)离子液体。首先利用元素分析和核磁共振确定了其组成,并测量了该离子液体的粘度和电导性能,然后使用多孔的聚偏氟乙烯作为支撑制备了离子液体电解质复合膜,120℃时通过交流阻抗测得其电导率为2.7×10-2 S.cm-1。最后将该复合膜组装在单电池中测试了不同温度下的性能,常压下120℃时可获得0.85 mW.cm-2的功率密度,结果表明该复合膜的质子传导可以完全不依赖水,从而能够实现高温操作。With N-imidazole as staring material and [Emim]Br as intermediate, 1-ethyl-3-methylimidazol dihydrogen phosphate （[Emim]H2PO4） was synthesized and was soaked in the PVDF membrane as composite fuel cell electrolyte. The conductivity and viscosity of the ionic liquid was measured, and the composite membrane was characterized for conductivity as well. Fuel cell test was carried out at 120℃ and a maximum power density of 0.85 mW ·cm^-2 was observed, the result shows that the membrane based on [Emim]H2PO4 can work as proton conductor independent of water.

关 键 词：质子交换膜 离子液体 燃料电池 

分 类 号：O614.411[理学—无机化学]