Theoretical study for properties of SOFC anode using three-dimensional porous structure simulator

T. Ogura, T. Ishimoto, R. Nagumo, M. Koyama

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

    Abstract

    Anodic microstructure influences overpotential characteristics and the optimization of the microstructure for given anode materials and operating conditions is challenging. In this study, we have tested enormous number of microstructures of Ni-YSZ cermet anode using the porous structure simulator developed previously. As a result of overpotential calculations, we found anode structure giving superior overpotential characteristics with different microstructures. Further, our analyses clarified that consideration of only triple-phase boundary length is not enough to explain the overpotential dependence on microstructures. We therefore introduced a new index to relate overpotential characteristics with porous microstructures by taking into account both triple-phase boundary length and its spatial distribution.

    Original languageEnglish
    Title of host publicationECS Transactions - Solid Oxide Fuel Cells 11 (SOFC-XI)
    Pages1847-1853
    Number of pages7
    Edition2 PART 3
    DOIs
    Publication statusPublished - Dec 1 2009
    Event11th International Symposium on Solid Oxide Fuel Cells (SOFC-XI)- 216th ECS Meeting - Vienna, Austria
    Duration: Oct 4 2009Oct 9 2009

    Publication series

    NameECS Transactions
    Number2 PART 3
    Volume25
    ISSN (Print)1938-5862
    ISSN (Electronic)1938-6737

    Other

    Other11th International Symposium on Solid Oxide Fuel Cells (SOFC-XI)- 216th ECS Meeting
    CountryAustria
    CityVienna
    Period10/4/0910/9/09

    All Science Journal Classification (ASJC) codes

    • Engineering(all)

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