Pt1-xCox nanoparticles as cathode catalyst for proton exchange membrane fuel cells with enhanced catalytic activity

Publication Type:
Journal Article
Citation:
Materials Chemistry and Physics, 2010, 124 (1), pp. 841 - 844
Issue Date:
2010-11-01
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Nanosize carbon-supported Pt1-xCox(x = 0.2, 0.3, and 0.45) electrocatalysts were prepared by a chemical reduction method using sodium borohydride (NaBH4) as the reduction agent. Transmission electron microscopy examination showed uniform dispersion of Pt1-xCoxalloy catalysts on carbon matrix, with the particle size less than 10 nm. The electrochemical characteristics of Pt1-xCoxalloy catalysts were studied by cyclic voltammetry, linear sweep voltammetry, and chronoamperometric testing. The as-prepared Pt1-xCoxalloy nanoparticles could be promising cathode catalysts for oxygen reduction in proton exchange membrane fuel cells with the feature of much reduced cost, but significantly increased catalytic activity. © 2010 Elsevier B.V. All rights reserved.
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