质子交换膜燃料电池的燃料气多来自于重整气 ,而重整气中所含的CO对电催化剂有毒化作用 ,使电池性能大幅度衰减 .本文就CO对燃料电池的性能影响作了系统的实验研究 ,结果证明 :随CO通入时间的延长 ,电池性能剧烈衰减 ,然后趋于稳定 ,但仍有振荡 ;同时CO浓度越高 ,中毒现象越严重 ;温度升高 ,CO的毒化作用减轻 ;CO在催化剂表面的吸附是可逆的 ;PtRu/C较Pt/C的抗CO中毒能力强 .本文所制的PtRu/C催化剂的抗CO性能已与商品催化剂接近

Fuel of proton exchange membrane fuel cell(PEMFC) mostly comes from reformate contains CO which will poison the fuel cell electrocatalyst.The effect of CO on the performance of PEMFC was studied in this paper.The results of the experiment show that when CO is fed in PEMFC,the cell voltage will be decreased violently,then it will become steady with some vibration.The poison will become more serious with higher CO content and weaker at higher temperature.The adsorption of CO on the electrocatalyst is reversible. The PtRu electrocatalyst is more suitable for the electrocatalysis of CO/H 2 than Pt electrocatalyst.