Measurements and modeling of Sm0.5 Sr0.5 CoO 3-x - Ce0.9 Gd0.1 O1.95 SOFC cathodes produced using infiltrate solution additives

Jason D. Nicholas, Scott A. Barnett

    Research output: Research - peer-reviewArticle

    • 60 Citations

    Abstract

    Nanocomposite Sm0.5 Sr0.5 CoO3-x (SSC)- Ce0.9 Gd0.1 O1.95 (GDC) solid oxide fuel cell (SOFC) cathodes were produced by infiltrating SSC nitrate solutions into GDC scaffolds. A single infiltration of a concentrated solution resulted in a low polarization resistance of 0.1 cm2 at 600°C. Infiltrate solution additives slightly improved the SSC phase purity but did not significantly alter the SSC particle morphology/size or the infiltrated cathode polarization resistance. Polarization resistance predictions made using microstructural observations and a simple model were found to be within 35% of the experimentally measured values without the use of fitting parameters.

    LanguageEnglish (US)
    JournalJournal of the Electrochemical Society
    Volume157
    Issue number4
    DOIs
    StatePublished - 2010

    Profile

    cell cathodes
    solid oxide fuel cells
    polarization
    Solid oxide fuel cells (SOFC)
    Cathodes
    Polarization
    infiltration
    nitrates
    nanocomposites
    purity
    cathodes
    predictions
    Infiltration
    Scaffolds
    Nitrates
    Nanocomposites

    ASJC Scopus subject areas

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

    Cite this

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    abstract = "Nanocomposite Sm0.5 Sr0.5 CoO3-x (SSC)- Ce0.9 Gd0.1 O1.95 (GDC) solid oxide fuel cell (SOFC) cathodes were produced by infiltrating SSC nitrate solutions into GDC scaffolds. A single infiltration of a concentrated solution resulted in a low polarization resistance of 0.1 cm2 at 600°C. Infiltrate solution additives slightly improved the SSC phase purity but did not significantly alter the SSC particle morphology/size or the infiltrated cathode polarization resistance. Polarization resistance predictions made using microstructural observations and a simple model were found to be within 35% of the experimentally measured values without the use of fitting parameters.",
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    AB - Nanocomposite Sm0.5 Sr0.5 CoO3-x (SSC)- Ce0.9 Gd0.1 O1.95 (GDC) solid oxide fuel cell (SOFC) cathodes were produced by infiltrating SSC nitrate solutions into GDC scaffolds. A single infiltration of a concentrated solution resulted in a low polarization resistance of 0.1 cm2 at 600°C. Infiltrate solution additives slightly improved the SSC phase purity but did not significantly alter the SSC particle morphology/size or the infiltrated cathode polarization resistance. Polarization resistance predictions made using microstructural observations and a simple model were found to be within 35% of the experimentally measured values without the use of fitting parameters.

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