Validation of the simple infiltrated microstructure polarization loss estimation (SIMPLE) model using single layer, nano-composite Sm 0.5Sr0.5CoO3-x-Ce0.9Gd 0.1O1.95 solid oxide fuel cell cathodes

Jason D. Nicholas, Scott A. Barnett

    Research output: ResearchConference contribution

    • 1 Citations

    Abstract

    Single-layer nano-composite Sm0.5Sr0.5CoO 3-x (SSC) - Ce0.9Gd0.1O1.95 (GDC) Solid Oxide Fuel Cell (SOFC) cathodes with various SSC loading levels were prepared through multiple nitrate solution infiltrations. Microstructural analyses indicated that the average infiltrate hemispherical particle radius remained roughly constant, at 25nm, across multiple infiltrate-gel-800°C fire sequences. Symmetric cell polarization resistance measurements of cathode performance showed that the Simple Infiltrated Microstructure Polarization Loss Estimation (SIMPLE) model, which accounts for electrical losses associated with surface oxygen incorporation and bulk oxygen transport, was able to predict the performance of heavily infiltrated cathodes to within 55% (without the use of fitting parameters) at all temperatures from 400-700°C. Results also indicate that electronic conduction losses limited the overall cathode performance at low and medium SSC infiltrate loading levels.

    LanguageEnglish (US)
    Title of host publicationECS Transactions
    Pages39-58
    Number of pages20
    Volume28
    Edition11
    DOIs
    StatePublished - 2010
    EventIonic and Mixed Conducting Ceramics 7 - 217th ECS Meeting - Vancouver, BC, Canada
    Duration: Apr 25 2010Apr 30 2010

    Other

    OtherIonic and Mixed Conducting Ceramics 7 - 217th ECS Meeting
    CountryCanada
    CityVancouver, BC
    Period4/25/104/30/10

    Profile

    Solid oxide fuel cells (SOFC)
    Cathodes
    Polarization
    Microstructure
    Composite materials
    Oxygen
    Infiltration
    Nitrates
    Fires
    Gels
    Temperature

    ASJC Scopus subject areas

    • Engineering(all)

    Cite this

    Nicholas, JD & Barnett, SA 2010, Validation of the simple infiltrated microstructure polarization loss estimation (SIMPLE) model using single layer, nano-composite Sm 0.5Sr0.5CoO3-x-Ce0.9Gd 0.1O1.95 solid oxide fuel cell cathodes. in ECS Transactions. 11 edn, vol. 28, pp. 39-58, Ionic and Mixed Conducting Ceramics 7 - 217th ECS Meeting, Vancouver, BC, Canada, 4/25/10. DOI: 10.1149/1.3495831
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