Carbon-supported Pt-Fe alloy as a methanol-resistant oxygen-reduction catalyst for direct methanol fuel cells

A. K. Shukla, R. K. Raman, N. A. Choudhury, K. R. Priolkar, P. R. Sarode, S. Emura, R. Kumashiro

    Research output: Contribution to journalArticlepeer-review

    158 Citations (Scopus)

    Abstract

    Crossover of methanol from the anode to the cathode through the polymer-electrolyte membrane in solid-polymer-electrolyte direct methanol fuel cells constitutes a significant loss in their performance. Pt/C and Pt-Fe/C electrocatalysts have been characterized by X-ray diffraction, and X-ray photoelectron and X-ray absorption spectroscopies in conjunction with electrochemistry. It is found that Pt-Fe/C alloy crystallizing in an ordered face centered tetragonal crystal structure with higher proportions of active-platinum sites and a completely different nearest neighbour environment than Pt/C exhibits significantly high oxygen-reduction activity in the presence of methanol while Pt/C shows a methanol poisoning effect under similar conditions.

    Original languageEnglish
    Pages (from-to)181-190
    Number of pages10
    JournalJournal of Electroanalytical Chemistry
    Volume563
    Issue number2
    DOIs
    Publication statusPublished - 2004 Mar 1

    Keywords

    • Direct methanol fuel cells
    • Oxygen-reduction catalyst
    • Pt-Fe alloy
    • X-ray absorption spectroscopy
    • X-ray photoelectron spectroscopy

    ASJC Scopus subject areas

    • Analytical Chemistry
    • Chemical Engineering(all)
    • Electrochemistry

    Fingerprint Dive into the research topics of 'Carbon-supported Pt-Fe alloy as a methanol-resistant oxygen-reduction catalyst for direct methanol fuel cells'. Together they form a unique fingerprint.

    Cite this