Nitrogen precursor effects in iron-nitrogen-carbon oxygen reduction catalysts

Vijayadurga Nallathambi, Nathaniel Leonard, Ramanujam Kothandaraman, Scott Calabrese Barton

    Research output: Contribution to journalArticle

    • 43 Citations

    Abstract

    Metal-nitrogen-carbon (MNC) cathode catalysts were synthesized using nitrogen precursors of varying NitrogenCarbon (NC) ratio by pyrolysis in a constant volume reaction vessel. Here, we demonstrate that increasing a key property, the NC ratio of the nitrogen precursor increased the accessible active site density by reducing carbon deposition in the pores of the carbon support during pyrolysis. The most active catalysts were obtained in this work using melamine, having a NC ratio of 2. Kinetic current density as high as 13 A cm-3 at 0.8 ViR-free and over 100 h of stable current at 0.5 V were observed with melamine based MNC catalysts.

    Original languageEnglish (US)
    JournalElectrochemical and Solid-State Letters
    Volume14
    Issue number6
    DOIs
    StatePublished - 2011

    Profile

    nitrogen
    Nitrogen
    carbon
    Carbon
    catalysts
    Catalysts
    Afferent Loop Syndrome
    melamine
    pyrolysis
    metals
    Melamine
    Pyrolysis
    Metals
    vessels
    cathodes
    current density
    porosity
    iron
    kinetics
    oxygen

    ASJC Scopus subject areas

    • Electrochemistry
    • Electrical and Electronic Engineering
    • Materials Science(all)
    • Chemical Engineering(all)
    • Physical and Theoretical Chemistry

    Cite this

    Nitrogen precursor effects in iron-nitrogen-carbon oxygen reduction catalysts. / Nallathambi, Vijayadurga; Leonard, Nathaniel; Kothandaraman, Ramanujam; Barton, Scott Calabrese.

    In: Electrochemical and Solid-State Letters, Vol. 14, No. 6, 2011.

    Research output: Contribution to journalArticle

    Nallathambi, Vijayadurga; Leonard, Nathaniel; Kothandaraman, Ramanujam; Barton, Scott Calabrese / Nitrogen precursor effects in iron-nitrogen-carbon oxygen reduction catalysts.

    In: Electrochemical and Solid-State Letters, Vol. 14, No. 6, 2011.

    Research output: Contribution to journalArticle

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