Study of Formaldehyde and Formic Acid Contamination Effect on PEMFC

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    Abstract

    The contamination effect of formaldehyde (HCHO) and formic acid (HCOOH) was studied using state-of-the-art automotive PEMFC stacks and with high fuel utilization and automotive-type operation with hydrogen recirculation. The results, measured at current density of 0.6 A/cm2, show that the contamination effect of formaldehyde was observable when the concentration was 2 ppm, 200 times higher than the current limit in the ISO 14687-2:2012 standard. The effect of formaldehyde was less than 10% compared to 2 ppm of CO in the same operating conditions. Moreover, the contamination effect of formic acid was barely measurable at 2 ppm, corresponding to a concentration 100 times the limit of the ISO standard. Thus, the limits of HCHO and HCOOH in the current ISO standard seem to be too strict.
    Original languageEnglish
    Pages (from-to) F718-F727
    JournalJournal of the Electrochemical Society
    Volume165
    Issue number9
    DOIs
    Publication statusPublished - 22 Jun 2018
    MoE publication typeA1 Journal article-refereed

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    Keywords

    • PEMFC impurities
    • hydrogen fuel impurities
    • hydrogen fuel standard

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