质子交换膜燃料电池性能衰减研究进展

对近年来出现的关于质子交换膜燃料电池寿命和稳定性方面的研究成果进行了总结,电池性能衰减是由几种关键材料性能的下降所引起的,包括电解质膜的阳离子效应、电催化剂中毒与老化、电极结构的变化和其他材料的变质降解等,对这些原因分别进行了介绍,同时重点介绍了电池水平衡对电池的性能和稳定性的影响,以及电池的“反极”现象对电池组寿命的影响。

Researches on the deterioration of the PEMFCs' performance in recent years

The researches on the durability and the lifetime of the proton excha nge membrane fuel cells (PEMFCs) in recent years were summarized in this paper. It can be concluded that the deterioration of the PEMFCs' performance could be a ttributed to the attenuation of the key components of the PEMFCs, e.g. the anode effect of the membrane, the poisoning and the agglomeration of the catalysts, t he deterioration of the electrode structure and the degradation of other compone nts. The influences of the water balance and the counter-polarization on the dur ability and the lifetime of the PEMFC were presented elaborately.