Several of the many factors affecting the performance of a proton exchange membrane (PEM) fuel cell have been examined in an effort to better define the improvements needed for the production of a practical vehicular power system. The presence of either CO or CO2 in the fuel gas, as would be produced in a reformed methanol stream, were found to be detrimental to performance, with CO levels of even 10 ppm causing major losses in cell output. Repeated freezing and thawing was found to have no effect on the performance of a single cell PEM fuel cell, even when the cell was cooled to -78 degree C. The load following capability of a fuel cell stack was measured and determined to be at least 2 orders of magnitude faster than what is needed for vehicular applications.


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    Title :

    Factors affecting the performance of proton exchange membrane fuel cells


    Additional title:

    Darstellung von Einflußfaktoren auf das Betriebsverhalten von Protonenaustausch-Membranen in Brennstoffzellen


    Contributors:
    Simpson, S.F. (author) / Salinas, C.E. (author) / Cisar, A.J. (author) / Murphy, O.J. (author)


    Publication date :

    1995


    Size :

    11 Seiten, 7 Bilder, 18 Quellen




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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