PEMFC膜电极材料退化的研究进展

Research progress in the degeneration of MEA materials for PEMFC

对质子交换膜燃料电池膜电极材料的退化行为、降解机理和影响因素进行了综述,认为膜的退化主要原因是:高分子的分解导致膜的电导率下降和膜出现小孔对反应原料渗透。催化层的退化,是由C载体的腐蚀和Pt的电迁移所致。

The degeneration behavior, degradation mechanism and effect factors of membrane electrode assembly materials in proton exchange membrane fuel cells （PEMFC） were reviewed. The main reason of the degeneration of membrane was the decomposition of the polymer chains which resulted in the decreasing of the conductivity and the increasing of gas crossover. The degeneration of the catalyst layer could be contributed to the corrosion of the carbon support and Pt electromigration.