The effect of particle size on the microstructure and the effective reaction zone of SOFC cermet anodes

Hiroshi Fukunaga, Junji Azuma, Toru Takatsuka, Michihisa Koyama

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

    2 Citations (Scopus)

    Abstract

    Ni-SDC cermet SOFC anodes with different microstructures were prepared and the overpotential and the ohmic loss were measured. Anodes with coarse particles and small pores showed intermediate performance and little dependence on flow rate, whereas that with large pores showed a large dependence on flow rate and high performance at high flow rate. Anodes with fine particles showed lowest overpotential at low current density. Ohmic loss was large for the thick electrode with small pores, and for that with large pores, when flow rate was low. It is considered that different particle size and pore size lead to the difference in effective reaction zone, thus showing different dependence to the flow rate.

    Original languageEnglish
    Title of host publicationECS Transactions - Solid State Ionic Devices 6 - Nanoionics - 214th ECS Meeting
    Pages229-234
    Number of pages6
    Edition51
    DOIs
    Publication statusPublished - Dec 1 2008
    EventSolid State Ionic Devices 6 - Nanoionics - 214th ECS Meeting - Honolulu, HI, United States
    Duration: Oct 12 2008Oct 17 2008

    Publication series

    NameECS Transactions
    Number51
    Volume16
    ISSN (Print)1938-5862
    ISSN (Electronic)1938-6737

    Other

    OtherSolid State Ionic Devices 6 - Nanoionics - 214th ECS Meeting
    CountryUnited States
    CityHonolulu, HI
    Period10/12/0810/17/08

    All Science Journal Classification (ASJC) codes

    • Engineering(all)

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