Nafion~膜的回收及再铸膜在直接甲醇燃料电池中的应用  

Recycling the waste Nafion~ membrane and the use of recast Nafion membrane in direct methanol fuel cell

作　　者：李辰楠[1] 孙公权[1] 梁振兴[1] 任素贞[1] 赵新生[1] 辛勤[1] 

机构地区：[1]中国科学院大连化学物理研究所直接醇类燃料电池工程中心,辽宁大连116023

出　　处：《功能材料》2005年第7期1030-1033,共4页Journal of Functional Materials

基　　金：国家高技术研究发展计划(863计划)资助项目(2003AA517040);国家自然科学基金资助项目(20173060);中国科学院知识创新工程领域前沿资助项目(K2003D2);中国科学院方向性资助项目(KGCX2-SW-310)

摘　　要：利用异丙醇水溶液溶解废弃Nafion膜，异丙醇体积分数在60％～75％之间的水溶液能在220℃相对较快的溶解Nafion膜制得溶液，利用二甲基亚砜(DMS0)作为溶剂制备再铸膜。再铸膜酸度(EW)和溶胀度(SW)测试结果接近商品膜数值；红外光谱、X射线衍射分析表明再铸膜具有与商品膜相似的结构；甲醇渗透、电池性能测定结果表明，与商品Nafion115膜相比，具有相同厚度的再铸膜降低了甲醇渗透，适合应用于直接甲醇燃料电池中。This paper decribes a method for recycling the waste Nafion~ membrane by isopropanol and water.The relative good volume percent of isopropanol was 60%～75%.Recast membrane was prepared with dimethylsulfoxide. SW,EW tests and FT-IR,XRD analysis show the similarity of the recast membrane and the as-received Nafion~ membrane.The methanol permeation and cell performances of the recast membranes were evaluated and compared with the as-received Nafion~115 membrane.It was found that,compared with the Nafion~115 with the same thickness,the recast membrane has a lower methanol permeation which is meaningful in the direct methanol fuel cell(DMFC).

关 键 词：直接甲醇燃料电池 NAFION 再铸膜 甲醇渗透 

分 类 号：TM911.4[电气工程—电力电子与电力传动]