Intermediate-temperature SOFC optimized for high power density operation

G. Uozumi, H. Eto, J. Akikusa, N. Chitose, T. Akbay, K. Hosbino, K. Hosoi, T. Inagaki, S. Yamasaki

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

    Abstract

    Optimization of the electrolyte and the fuel electrode has been performed to increase the output power density of intermediate-temperature solid oxide fuel cells (IT-SOFCs). In order to fabricate novel fuel-electrodes, Gadolinium doped ceria (GDC) powder, which incorporates nano-sized Ru or GDC particles, was developed. The heating rate at sintering of electrolyte was optimized to obtain fine-grained structure for thinner electrolyte by increasing the material strength. For enhanced conversion of methane into hydrogen inside the cell-stack, a fuel-side current collector containing a mixture of nickel and doped ceria (GDC or SDC) with Ru nanoparticles was developed. Maximum output power density of 0.55W/cm2 was obtained with fuel utilization of 75% at 750°C.

    Original languageEnglish
    Title of host publicationECS Transactions - Fuel Cell Seminar 2007
    Pages449-454
    Number of pages6
    Edition1
    DOIs
    Publication statusPublished - Nov 17 2008
    EventFuel Cell Seminar 2007 - San Antonio, TX, United States
    Duration: Oct 15 2007Oct 19 2007

    Publication series

    NameECS Transactions
    Number1
    Volume12
    ISSN (Print)1938-5862
    ISSN (Electronic)1938-6737

    Other

    OtherFuel Cell Seminar 2007
    CountryUnited States
    CitySan Antonio, TX
    Period10/15/0710/19/07

    All Science Journal Classification (ASJC) codes

    • Engineering(all)

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