Journal
ELECTROCHEMISTRY COMMUNICATIONS
Volume 8, Issue 6, Pages 982-986Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2006.04.005
Keywords
carbon nanotubes; methanol oxidation; platinum-iron alloy
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The synthesis and characterization of catalysts based on bimetallic materials, Pt-Fe supported on multi-walled carbon nanotubes (MWNTs) for methanol electrooxidation is reported here. The catalyst was prepared by a spray-cooling process and characterized by TEM, EDS, ICP and XRD. The electrocatalytic properties of the Pt-Fe/MWNTs electrode for methanol oxidation have been investigated by cyclic voltammetry and chronoamperometry. It presented higher electrocatalytic activity and stability than a comparative Pt/ MWNTs catalyst. This may be attributed to the addition of Fe which leads to the small average particle size and high utilization of Pt in the Pt-Fe/MWNTs catalyst. The results imply that the Pt Fe/MWNTs composite has good potential applications in fuel cells. (C) 2006 Elsevier B.V. All rights reserved.
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