Non-precious oxygen reduction catalysts prepared by high-pressure pyrolysis for low-temperature fuel cells

R. Kothandaraman, Vijayadurga Nallathambi, Kateryna Artyushkova, Scott Calabrese Barton

    Research output: Contribution to journalArticle

    • 82 Citations

    Abstract

    Iron-based catalysts for the oxygen reduction reaction (ORR) were produced by pyrolysis of iron-acetate and Ketjenblack® carbon with varying amounts of 2,2′-bipyridine in a closed, constant-volume vessel. The total surface nitrogen content detected by XPS varied from 0.6 to 2.2 at% when the nitrogen precursor loading was varied from 1.5 to 11.3 wt%. The amount of nitrogen in the Fe-pyridinic form is estimated to vary between 0.12 and 0.24 at%, correlating to catalytic activity (current density) variation from 0.07 to 1.9 mA cm-2 at a catalyst loading of 0.5 mg cm-2. These results support the theory that iron associated with pyridinic nitrogen is a component of the catalytic active site responsible for oxygen reduction.

    Original languageEnglish (US)
    Pages (from-to)209-216
    Number of pages8
    JournalApplied Catalysis B: Environmental
    Volume92
    Issue number1-2
    DOIs
    StatePublished - Oct 19 2009

    Profile

    Nitrogen
    nitrogen
    Iron
    Catalysts
    Oxygen
    catalyst
    iron
    oxygen
    Afferent Loop Syndrome
    Pyrolysis
    pyrolysis
    Fuel cells
    Catalyst activity
    Current density
    X ray photoelectron spectroscopy
    Carbon
    Temperature
    fuel cell
    density current
    X-ray spectroscopy

    Keywords

    • Electrocatalysis
    • Fuel cells
    • Non-precious catalysts
    • Oxygen reduction reaction
    • Pyrolysis
    • XPS

    ASJC Scopus subject areas

    • Catalysis
    • Process Chemistry and Technology
    • Environmental Science(all)

    Cite this

    Non-precious oxygen reduction catalysts prepared by high-pressure pyrolysis for low-temperature fuel cells. / Kothandaraman, R.; Nallathambi, Vijayadurga; Artyushkova, Kateryna; Barton, Scott Calabrese.

    In: Applied Catalysis B: Environmental, Vol. 92, No. 1-2, 19.10.2009, p. 209-216.

    Research output: Contribution to journalArticle

    Kothandaraman, R.; Nallathambi, Vijayadurga; Artyushkova, Kateryna; Barton, Scott Calabrese / Non-precious oxygen reduction catalysts prepared by high-pressure pyrolysis for low-temperature fuel cells.

    In: Applied Catalysis B: Environmental, Vol. 92, No. 1-2, 19.10.2009, p. 209-216.

    Research output: Contribution to journalArticle

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