Theoretical study for the sintering of Ni anode in solid oxide fuel cell

K. Nakao, T. Ogura, T. Ishimoto, M. Koyama

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

    1 Citation (Scopus)

    Abstract

    Ni sintering is one of the main factors in SOFC degradation. In this study, we first investigated the surface orientation on Ni nanoparticles by using molecular dynamics (MD) method. It was identified that Ni nanoparticles mainly consist of four facets: (111), (100), (110), and (113). We also analyzed the stability of surface energy, which is the dominant driving force for the sintering phenomena, in various sizes of Ni nanoparticles. The MD simulation of two particles system was performed to investigate the sintering phenomena. We found that the diffusion coefficient is almost the same between 1373 and 1673 K, while contact surface orientation is different. It is indicated that dominant sintering mechanism of Ni nanoparticles is surface diffusion.

    Original languageEnglish
    Title of host publicationSolid Oxide Fuel Cells 12, SOFC XII
    Pages1661-1667
    Number of pages7
    Edition2 PART 2
    DOIs
    Publication statusPublished - Dec 1 2011
    Event12th International Symposium on Solid Oxide Fuel Cells, SOFC-XII - 219th ECS Meeting - Montreal, QC, Canada
    Duration: May 1 2011May 6 2011

    Publication series

    NameECS Transactions
    Number2 PART 2
    Volume35
    ISSN (Print)1938-5862
    ISSN (Electronic)1938-6737

    Other

    Other12th International Symposium on Solid Oxide Fuel Cells, SOFC-XII - 219th ECS Meeting
    CountryCanada
    CityMontreal, QC
    Period5/1/115/6/11

    All Science Journal Classification (ASJC) codes

    • Engineering(all)

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