Performance variability of La(Sr)FeO3 SOFC cathode with Pt, Ag, and Au current collectors

S. P. Simner, M. D. Anderson, L. R. Pederson, J. W. Stevenson

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    Abstract

    This investigation details relatively short-term (500 h) performance characteristics (in particular cathode conditioning and degradation) of anode-supported SOFCs utilizing La(Sr)FeO3 cathodes with platinum, silver, or gold current collectors. Conditioning or degradation characteristics were found to be highly dependant on the current collector used. An additional area of study considered transient cell behavior following rest periods at open-circuit voltage (OCV, zero current). Three types of behavior were observed; (i) decreased performance after OCV hold, (ii) increased performance after OCV hold, and (iii) no discernible change. The type of transient behavior was found to be dependent on the noble metal current collector utilized and the time at which the transient behavior was assessed. Longer testing times indicated more pronounced transient characteristics.

    Original languageEnglish
    Pages (from-to)A1851-A1859
    JournalJournal of the Electrochemical Society
    Volume152
    Issue number9
    DOIs
    Publication statusPublished - 7 Oct 2005

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    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Renewable Energy, Sustainability and the Environment
    • Surfaces, Coatings and Films
    • Electrochemistry
    • Materials Chemistry

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