便携式直接甲醇燃料电池

Study of Direct Methanol Fuel Cell for Portable Application

采用超薄无Teflon化催化层制备直接甲醇燃料电池空气电极,用电化学沉积方法制备甲醇氧化催化剂PtRu/C。提出较高电位下甲醇氧化的概念。所研制的直接甲醇燃料电池的催化电极贵金属催化剂的利用率提高,甲醇氧化过程催化剂CO中毒问题能够基本消除。

A technique of fabrication of air electrode for direct methanol fuel cells (DMFC) is proposed. The investigated air electrode is free of Teflon- containing and with ultra- thin catalyst layer. Catalysts PtRu/C for methanol electroxidation is electrochemically deposited on a Nafion- bonded carbon electrode. A concept, that is, methanol is oxidized at a relatively high potential, is proposed. Such a fabricated DMFC is characterized with a high utilization of noble metals and basically eliminating CO poisoning in operation.