Contact resistance between gas diffusion layer and catalyst layer of PEM fuel cell

Iwao Nitta (Corresponding Author), Olli Himanen, Mikko Mikkola

    Research output: Contribution to journalArticle

    74 Citations (Scopus)

    Abstract

    In this study, the electrical contact resistance between gas diffusion layer (GDL) and catalyst layer (CL) on an electrolyte membrane was experimentally evaluated as a function of compression. The contact resistances between the GDL and CL decreased nonlinearly as the GDL thickness decreased due to the compression pressure. The values of the contact resistance between the GDL and CL were found to be more than one order of magnitude larger than the contact resistance between the GDL and graphite, and even comparable to the ionic resistance of the membrane. Because of the large value and variation in contact resistance between the GDL and CL, severe current distribution may be created inside the cell. The results reported here should be highly useful in providing a more accurate picture of the transport phenomena in a fuel cell.
    Original languageEnglish
    Pages (from-to)47-51
    Number of pages5
    JournalElectrochemistry Communications
    Volume10
    Issue number1
    DOIs
    Publication statusPublished - 2008
    MoE publication typeA1 Journal article-refereed

      Fingerprint

    Keywords

    • inhomogeneous compression
    • contact resistance
    • gas diffusion layer
    • catalyst layer
    • PEM Fuel Cell

    Cite this