聚合物电解质燃料电池阴极非贵金属电催化剂

Electrocatalyst based on non noble metal for cathode in polymer electrolyte fuel cell

为了开发替代聚合物电解质燃料电池 (PEFC)中用于阴极氧还原的贵金属催化剂 ,同时为了提高液体进料直接甲醇燃料电池 (LFDMFC)中阴极催化剂抗甲醇中毒性能 ,基于非贵金属的氧还原催化剂的研究开发工作大量展开 ,介绍了两类用于PEFC中阴极氧还原的非贵金属催化剂———N4 金属大环化合物催化剂和Chevrel相催化剂 ,包括催化剂制备方法、催化活性以及催化机理分析等。对LFDMFC抗甲醇中毒的阴极催化剂进行了分析 。

Large R&D efforts are made to develop the oxygen reduction catalyst based on non noble metal in order to substitute the Pt based electrocatalyst for cathode in polymer electrolyte fuel cell(PEFC) and to improve the methanol tolerance property of cathode catalyst in liquid feed direct methanol fuel cell (LFDMFC).Two oxygen reduction catalysts based on non noble metal for cathode in PEFC, the N 4 transition metal macrocycle complex catalyst and the Chevrel phase catalyst, are introduced, including their preparing method, catalyst activity and catalyst mechanism analysis. The methanol tolerance cathode catalyst used in LFDMFC is also analyzed and the conclusion is that both the two catalysts have good methanol tolerance properties.