Effect of nanocarbon substrate materials on the CO tolerance of PtRu electrocatalysts for fuel cell

摘要

The support effect of carbon nanotubes (CNTs) on the performance of CO tolerant electrocatalysts for polymer electrode fuel cell (PEFC) was studied by preparing identical Pt-Ru catalyst particles in a liquid phase and then attaching them on CNTs with different diameter (15-100 nm) and specific surface area. The PtRu catalysts supported on a thinner multi-walled CNT with the diameter of 15 nm shows higher CO tolerance performance in the hydrogen oxidation reaction (HOR). It is thus considered that the CO tolerance of Pt-Ru electrocatalyst is significantly dependent on the kind of CNTs surface.