PrBaCo2O5+δ-Sm0.5Sr0.5CoO3composite oxide as active cathode for intermediate-temperature solid oxide fuel cells

Tatsumi Ishihara, Syuaibatul Islamiyah, Maksymilian Kluczny, Jun Tae Song, Atsushi Takagaki

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    Cathodic performance of double perovskite oxide of PrBaCo2O5as an active catalyst for SOFC was investigated. Because delamination of PrBaCo2O5cathode is easily occurred by larger thermal expansion coefficient, mixing effects of PrBaCo2O5with another perovskite oxide were investigated using a LaGaO3-based electrolyte. Among the oxides mixed with PrBaCo2O5(PBCO), it was found that mixing Sm0.5Sr0.5CoO3(SSC) with PBCO shows the smallest cathodic overpotential and the most suitable for increase in cathodic activity. Increase in cathodic performance can be assigned to the high activity of oxygen dissociation on SSC and the fast oxide ion diffusivity in PBCO. Therefore, composite oxide of PBCO with SSC is highly active as cathode for SOFC at intermediate temperature.

    Original languageEnglish
    Title of host publication17th International Symposium on Solid Oxide Fuel Cells, SOFC 2021
    PublisherIOP Publishing Ltd.
    Pages1425-1432
    Number of pages8
    Edition1
    ISBN (Electronic)9781607685395
    DOIs
    Publication statusPublished - 2021
    Event17th International Symposium on Solid Oxide Fuel Cells, SOFC 2021 - Stockholm, Sweden
    Duration: Jul 18 2021Jul 23 2021

    Publication series

    NameECS Transactions
    Number1
    Volume103
    ISSN (Print)1938-6737
    ISSN (Electronic)1938-5862

    Conference

    Conference17th International Symposium on Solid Oxide Fuel Cells, SOFC 2021
    Country/TerritorySweden
    CityStockholm
    Period7/18/217/23/21

    All Science Journal Classification (ASJC) codes

    • Engineering(all)

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