Production of Ni-based glassy alloy-coated bipolar plate with hydrophilic surface for PEMFC and its evaluation by electrochemical impedance spectroscopy

Shin Ichi Yamaura, Ken Ichi Katsumata, Masatomo Hattori, Toshinobu Yogo

    Research output: Contribution to journalArticlepeer-review

    2 Citations (Scopus)

    Abstract

    In this study, Ni65Cr15P16B4 glassy alloy-coated bipolar plates with a hydrophilic surface were produced and the power generation properties of a single fuel cell with such plates were investigated, SUS316L and graphite bipolar plates also being produced for comparison. The fuel cell with the glassy alloy-coated bipolar plates showed good I-V performance after repeated I-V scans for membrane activation as did the cell with the graphite bipolar plates. After 30 I-V scans for activation, a long-time power generation test for 100 h was conducted at a current density of 0.2 A·cm-2. As a result, it was found that the fuel cell with the glassy alloy-coated bipolar plates showed stable power generation behaviour, maintaining the cell voltage at around 0.6V. Impedance measurements were also conducted for the cells and it was found that it was possible to understand the difference of I-V behaviour between the cells with three different bipolar plate materials by calculating the impedance parameters.

    Original languageEnglish
    Pages (from-to)1324-1329
    Number of pages6
    JournalMaterials Transactions
    Volume54
    Issue number8
    DOIs
    Publication statusPublished - 2013 Sep 3

    Keywords

    • Bipolar plate
    • Electrical impedance spectroscopy
    • High velocity oxy-fuel spray coating
    • Metallic glass

    ASJC Scopus subject areas

    • Materials Science(all)
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering

    Fingerprint

    Dive into the research topics of 'Production of Ni-based glassy alloy-coated bipolar plate with hydrophilic surface for PEMFC and its evaluation by electrochemical impedance spectroscopy'. Together they form a unique fingerprint.

    Cite this