Journal
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
Volume 16, Issue 3, Pages 1105-1110Publisher
SPRINGER
DOI: 10.1007/s10008-011-1486-5
Keywords
Core-shell; Proton exchange membrane fuel cells; Oxygen reduction; Cathode catalyst
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Nanoscale Co-core-Pt-shell particles were successfully synthesized based on a successive reduction strategy. The as-prepared core-shell nanoparticles were characterized by X-ray diffraction, energy-dispersive X-ray spectroscopy, transmission electron microscope, and electrochemical methods. It was found that the catalytic reactivity of Co-core-Pt-shell/C catalysts toward oxygen reduction was enhanced. It is believed that the prepared Co-core-Pt-shell/C nanoparticles could be promising for cathode catalysis in proton exchange membrane fuel cells with much reduced Pt content, but significantly increased catalytic activity.
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