PEMFC氧电极的研究——助催化元素Ni和Co对Pt/C电催化剂性能的影响

By adding the catalytic promoters of Ni and Co with the liquid co-deposition method, we have developed a new kind of electrocatalyst for PEMFC. Activity improvement of the electro-catalyst was confirmed by oxygen electrode polarization measurements. When the contents of Ni and Co were 0.8% and 1% (based on carbon) respectively, the electro-catalyst exhibited better performance. SEM and TEM showed that the Pt/C electro-catalysts were in high dispersion state, due to the existence of Ni and Co. After 96 h test, no obvious deactivation was observed.