Performance and kinetics of Pt-CNT catalyst electrodes in a PEM fuel cell

Ayo Samuel Afolabi, Ambali Saka Abdulkareem, Sunny Esayegbemu Iyuke, Hendrick Christoffel Van Zyl Pienaar

    Research output: Contribution to journalArticle

    3 Citations (Scopus)

    Abstract

    This study investigated the performance of membrane electrode assembly (MEA) fabricated with various loadings of platinum catalyst on carbon nanotubes (CNTs) and sulfonated membrane at constant conditions of duration, temperature and pressure. The fabricated MEA was tested in a single proton exchange membrane (PEM) fuel cell unit using hydrogen and oxygen as fuel and oxidant gases respectively. The results obtained show that the performance of the MEA in the cell improves with increase in loading of the catalyst on the electrodes. The results obtained on kinetics of the fuel cell indicate that the MEA samples fabricated with 30 and 40 wt% Pt catalyst electrodes conform to the Tafel equation whereas the remaining MEA fabricated with 10 and 20 wt% catalyst samples do not obey the Tafel equation due to large values of their overpotential. Hirschenhofer and Tafel equations were used to model the performance of the catalyst electrodes in the cell and the simulated voltage obtained from the former showed better conformity with the experimental voltage than the latter.

    Original languageEnglish
    Pages (from-to)1497-1505
    Number of pages9
    JournalJournal of Materials Research
    Volume27
    Issue number11
    DOIs
    Publication statusPublished - Jun 14 2012

    Fingerprint

    Carbon Nanotubes
    Proton exchange membrane fuel cells (PEMFC)
    fuel cells
    Carbon nanotubes
    carbon nanotubes
    membranes
    catalysts
    Electrodes
    Catalysts
    Kinetics
    electrodes
    protons
    kinetics
    Membranes
    assembly
    Electric potential
    electric potential
    Platinum
    cells
    Oxidants

    All Science Journal Classification (ASJC) codes

    • Materials Science(all)
    • Mechanical Engineering
    • Mechanics of Materials
    • Condensed Matter Physics

    Cite this

    Afolabi, A. S., Abdulkareem, A. S., Iyuke, S. E., & Pienaar, H. C. V. Z. (2012). Performance and kinetics of Pt-CNT catalyst electrodes in a PEM fuel cell. Journal of Materials Research, 27(11), 1497-1505. https://doi.org/10.1557/jmr.2012.71
    Afolabi, Ayo Samuel ; Abdulkareem, Ambali Saka ; Iyuke, Sunny Esayegbemu ; Pienaar, Hendrick Christoffel Van Zyl. / Performance and kinetics of Pt-CNT catalyst electrodes in a PEM fuel cell. In: Journal of Materials Research. 2012 ; Vol. 27, No. 11. pp. 1497-1505.
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    abstract = "This study investigated the performance of membrane electrode assembly (MEA) fabricated with various loadings of platinum catalyst on carbon nanotubes (CNTs) and sulfonated membrane at constant conditions of duration, temperature and pressure. The fabricated MEA was tested in a single proton exchange membrane (PEM) fuel cell unit using hydrogen and oxygen as fuel and oxidant gases respectively. The results obtained show that the performance of the MEA in the cell improves with increase in loading of the catalyst on the electrodes. The results obtained on kinetics of the fuel cell indicate that the MEA samples fabricated with 30 and 40 wt{\%} Pt catalyst electrodes conform to the Tafel equation whereas the remaining MEA fabricated with 10 and 20 wt{\%} catalyst samples do not obey the Tafel equation due to large values of their overpotential. Hirschenhofer and Tafel equations were used to model the performance of the catalyst electrodes in the cell and the simulated voltage obtained from the former showed better conformity with the experimental voltage than the latter.",
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    Afolabi, AS, Abdulkareem, AS, Iyuke, SE & Pienaar, HCVZ 2012, 'Performance and kinetics of Pt-CNT catalyst electrodes in a PEM fuel cell', Journal of Materials Research, vol. 27, no. 11, pp. 1497-1505. https://doi.org/10.1557/jmr.2012.71

    Performance and kinetics of Pt-CNT catalyst electrodes in a PEM fuel cell. / Afolabi, Ayo Samuel; Abdulkareem, Ambali Saka; Iyuke, Sunny Esayegbemu; Pienaar, Hendrick Christoffel Van Zyl.

    In: Journal of Materials Research, Vol. 27, No. 11, 14.06.2012, p. 1497-1505.

    Research output: Contribution to journalArticle

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    AU - Afolabi, Ayo Samuel

    AU - Abdulkareem, Ambali Saka

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