PtxNi alloy nanoparticles as cathode catalyst for PEM fuel cells with enhanced catalytic activity

Publisher:
Elsevier Inc
Publication Type:
Journal Article
Citation:
Journal Of Alloys And Compounds, 2009, 488 (1), pp. 195 - 198
Issue Date:
2009-01
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A series of PtxNi/C (x = 13) nanoparticle catalysts were prepared using a chemical reduction method, where the aim was to reduce the Pt loading and maintain high catalytic reactivity towards the oxygen reduction reaction. The catalysts were characterized by X-ray diffraction, field emission scanning electron microscopy, and transmission electron microscopy. The electrochemical performance of the PtxNi/C alloy catalysts was evaluated by cyclic voltammetry, steady-state measurements, and chronoamperometric testing. We found that the catalytic reactivity of Pt catalysts towards oxygen reduction can be maintained or even enhanced by partially replacing platinum with nickel.
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