Fabrication of SmBa0.5Sr0.5Co2O5+δ cathode material and its application for Sr- and Mg-doped LaGaO3 electrolyte-supported solid oxide fuel cell

Tai Nan Lin, Ruey Yi Lee, Jen Yuan Kuo, Tatsumi Ishihara, Kohei Hosoi

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

    Abstract

    The layered samarium and strontium doped perovskite oxide SmBa0.5Sr0.5Co2O5+δ (SBSC) was synthesized by glycine nitrate combustion process (GNC). The structure, microstructure, conductivity, and coefficient of thermal expansion were investigated. The crystallinity of SBSC powder showed pure perovskite phase above 1000°C according to the XRD and TGA results. With increased calcination temperature, the crystallinity improved and the powders grew larger and agglomeration occurred. The conductivity of SBSC powders increased with elevated temperature while the coefficient of thermal expansion was 22.6 × 10-6 K-1. SBSC powders were utilized as cathode materials in Sr-and Mg-doped LaGaO3 (LSGM)-based electrolyte-supported solid oxide fuel cell for power performance test. The cell with structure of (NiFe + CMF) | LSGM | SBSC was operated from 700 to 800°C with humidified H2 as a fuel and ambient air as oxidant. The maximum power densities were 550 and 170 mW cm-2 at 800 and 700°C, respectively. The experimental results indicate that SBSC is a promising cathode material for intermediate temperature solid oxide fuel cell (IT-SOFC).

    Original languageEnglish
    Title of host publicationSolid Oxide Fuel Cells 14, SOFC 2015
    EditorsS. C. Singhal, K. Eguchi
    PublisherElectrochemical Society Inc.
    Pages895-901
    Number of pages7
    Edition1
    ISBN (Electronic)9781607685395
    DOIs
    Publication statusPublished - Jan 1 2015
    Event14th International Symposium on Solid Oxide Fuel Cells, SOFC 2015; held as part of the Electrochemical Society, ECS Conference on Electrochemical Energy Conversion and Storage - Glasgow, United Kingdom
    Duration: Jul 26 2015Jul 31 2015

    Publication series

    NameECS Transactions
    Number1
    Volume68
    ISSN (Print)1938-6737
    ISSN (Electronic)1938-5862

    Other

    Other14th International Symposium on Solid Oxide Fuel Cells, SOFC 2015; held as part of the Electrochemical Society, ECS Conference on Electrochemical Energy Conversion and Storage
    Country/TerritoryUnited Kingdom
    CityGlasgow
    Period7/26/157/31/15

    All Science Journal Classification (ASJC) codes

    • Engineering(all)

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