Development of a methodology to optimize the air bleed in PEMFC systems operating with low quality hydrogen

Luis Pérez, T. Rajala, Jari Ihonen, Pauli Koski, J.M. Sousa, A. Mendes (Corresponding Author)

    Research output: Contribution to journalArticleScientificpeer-review

    16 Citations (Scopus)

    Abstract

    The use of hydrogen with lower quality than that specified in current regulation is an attractive option for stationary PEMFC power production. In this paper, the effect of CO is mitigated using air bleed levels up to 2% in an H2 PEMFC fed with CO concentrations below 20 ppm. A methodology to optimize the air bleed levels is developed using a novel arrangement of cells coupled to a gas chromatograph. The methodology relies on evaluating the distributed performance of the cell and on determining the CO and CO2 molar flow rates at the anode outlet. Furthermore, the amount of CO adsorbed onto the catalyst and the fraction of catalytic sites covered by CO are estimated. The results show that different parameters, such as the H2 volumetric flow rate, CO concentration and air bleed level, influence both the steady state and dynamics of PEMFCs operated with low quality hydrogen.
    Original languageEnglish
    Pages (from-to)16286-16299
    Number of pages13
    JournalInternational Journal of Hydrogen Energy
    Volume38
    Issue number36
    DOIs
    Publication statusPublished - 2013
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    Proton exchange membrane fuel cells (PEMFC)
    methodology
    Hydrogen
    air
    hydrogen
    flow velocity
    Air
    Flow rate
    outlets
    cells
    Anodes
    anodes
    catalysts
    Catalysts
    Gases
    gases

    Keywords

    • air bleed
    • carbon monoxide
    • gas chromatography
    • hydrogen quality
    • segmented PEMFC

    Cite this

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    title = "Development of a methodology to optimize the air bleed in PEMFC systems operating with low quality hydrogen",
    abstract = "The use of hydrogen with lower quality than that specified in current regulation is an attractive option for stationary PEMFC power production. In this paper, the effect of CO is mitigated using air bleed levels up to 2{\%} in an H2 PEMFC fed with CO concentrations below 20 ppm. A methodology to optimize the air bleed levels is developed using a novel arrangement of cells coupled to a gas chromatograph. The methodology relies on evaluating the distributed performance of the cell and on determining the CO and CO2 molar flow rates at the anode outlet. Furthermore, the amount of CO adsorbed onto the catalyst and the fraction of catalytic sites covered by CO are estimated. The results show that different parameters, such as the H2 volumetric flow rate, CO concentration and air bleed level, influence both the steady state and dynamics of PEMFCs operated with low quality hydrogen.",
    keywords = "air bleed, carbon monoxide, gas chromatography, hydrogen quality, segmented PEMFC",
    author = "Luis P{\'e}rez and T. Rajala and Jari Ihonen and Pauli Koski and J.M. Sousa and A. Mendes",
    year = "2013",
    doi = "10.1016/j.ijhydene.2013.10.037",
    language = "English",
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    pages = "16286--16299",
    journal = "International Journal of Hydrogen Energy",
    issn = "0360-3199",
    publisher = "Elsevier",
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    Development of a methodology to optimize the air bleed in PEMFC systems operating with low quality hydrogen. / Pérez, Luis; Rajala, T.; Ihonen, Jari; Koski, Pauli; Sousa, J.M.; Mendes, A. (Corresponding Author).

    In: International Journal of Hydrogen Energy, Vol. 38, No. 36, 2013, p. 16286-16299.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - Development of a methodology to optimize the air bleed in PEMFC systems operating with low quality hydrogen

    AU - Pérez, Luis

    AU - Rajala, T.

    AU - Ihonen, Jari

    AU - Koski, Pauli

    AU - Sousa, J.M.

    AU - Mendes, A.

    PY - 2013

    Y1 - 2013

    N2 - The use of hydrogen with lower quality than that specified in current regulation is an attractive option for stationary PEMFC power production. In this paper, the effect of CO is mitigated using air bleed levels up to 2% in an H2 PEMFC fed with CO concentrations below 20 ppm. A methodology to optimize the air bleed levels is developed using a novel arrangement of cells coupled to a gas chromatograph. The methodology relies on evaluating the distributed performance of the cell and on determining the CO and CO2 molar flow rates at the anode outlet. Furthermore, the amount of CO adsorbed onto the catalyst and the fraction of catalytic sites covered by CO are estimated. The results show that different parameters, such as the H2 volumetric flow rate, CO concentration and air bleed level, influence both the steady state and dynamics of PEMFCs operated with low quality hydrogen.

    AB - The use of hydrogen with lower quality than that specified in current regulation is an attractive option for stationary PEMFC power production. In this paper, the effect of CO is mitigated using air bleed levels up to 2% in an H2 PEMFC fed with CO concentrations below 20 ppm. A methodology to optimize the air bleed levels is developed using a novel arrangement of cells coupled to a gas chromatograph. The methodology relies on evaluating the distributed performance of the cell and on determining the CO and CO2 molar flow rates at the anode outlet. Furthermore, the amount of CO adsorbed onto the catalyst and the fraction of catalytic sites covered by CO are estimated. The results show that different parameters, such as the H2 volumetric flow rate, CO concentration and air bleed level, influence both the steady state and dynamics of PEMFCs operated with low quality hydrogen.

    KW - air bleed

    KW - carbon monoxide

    KW - gas chromatography

    KW - hydrogen quality

    KW - segmented PEMFC

    U2 - 10.1016/j.ijhydene.2013.10.037

    DO - 10.1016/j.ijhydene.2013.10.037

    M3 - Article

    VL - 38

    SP - 16286

    EP - 16299

    JO - International Journal of Hydrogen Energy

    JF - International Journal of Hydrogen Energy

    SN - 0360-3199

    IS - 36

    ER -