Effects of trace elements at the Ni/ScYSZ interface in a model solid oxide fuel cell anode

Michael Stenbæk Schmidt, Karin Vels Hansen, Kion Norrman, Mogens Bjerg Mogensen

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    Two ScYSZ electrolytes with different impurity levels were evaluated by electrochemical impedance spectroscopy using a nickel point electrode setup. The nickel electrodes showed lower electrode polarization resistances on the pure electrolyte than on the impure electrolyte. Time-of-flight secondary ion mass spectrometry was used to evaluate the electrode/electrolyte interfaces. Stronger signals from silica impurities in the electrode/electrolyte interface, relative to the electrolyte/gas interface, were found on the impure electrolyte than on the pure electrolyte. (C) 2007 Elsevier B.V. All rights reserved.
    Original languageEnglish
    JournalSolid State Ionics
    Volume179
    Issue number27-32
    Pages (from-to)1436-1441
    ISSN0167-2738
    DOIs
    Publication statusPublished - 30 Sep 2008
    Event16th International conference on solid state ionics (SSI-16) - Shanghai, China
    Duration: 1 Jul 20076 Jul 2007

    Conference

    Conference16th International conference on solid state ionics (SSI-16)
    Country/TerritoryChina
    CityShanghai
    Period01/07/200706/07/2007

    Keywords

    • SOFC
    • Anode
    • Impurities
    • ScYSZ
    • ToF-SIMS

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