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.
Factors affecting the performance of proton exchange membrane fuel cells
Darstellung von Einflußfaktoren auf das Betriebsverhalten von Protonenaustausch-Membranen in Brennstoffzellen
1995
11 Seiten, 7 Bilder, 18 Quellen
Aufsatz (Konferenz)
Englisch
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