Reversible type solid oxide fuel cells using Ni-Fe-CeO2 based cermet fuel electrode and applied for metal-air rechargeable battery

Tatsumi Ishihara, Atsushi Inoishi, Hackho Kim, Shintaro Ida

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

    2 Citations (Scopus)

    Abstract

    Effects of mixed conducting oxide added for Ni-Fe were studied as fuel electrode of Solid Oxide Reversible Cells (SORC). For SOFC operation, power density is larger as the following order, Ce(Mn,Fe)O2<NiFe=La(Sr)Ga(Mg)O3<Ce0.8Sm0.2O2<La(Sr)Fe (Mn)O3. On the other hand, for electrolysis operation, the electrolysis current density is increased in the following order, Ce(Mn,Fe)O2<<NiFe<La(Sr)Ga(Mg)O3<< La(Sr)Fe(Mn)O3 <Ce0.8 Sm0.2O2. Therefore, for reversible operation, NiFe-Ce0.8Sm0.2O2 (SDC) seems to be the most active. Degradation of the cell using NiFe-SDC and Sm0.5Sr0.5CoO3 for fuel and air electrode, respectively, was studied at 1073 K, 100mA/cm2. The observed terminal potential was 1.13 and 1.025 V for SOEC and SOFC respectively at initial cycle and the observed potential slightly increased for SOFC and decreased for SOEC with increasing cycle number, however, after 50 cycles; the observed terminal potential was 1.15 and 1.0 V for SOFC and SOFC, respectively. Therefore, the degradation is hardly observed for the reversible operation of the cell. Combination of SORC with metal oxidation could open a new application area for fuel cell. In this study, application of SORC for reversible metal-air battery has been studied.

    Original languageEnglish
    Title of host publicationSolid Oxide Fuel Cells 14, SOFC 2015
    EditorsS. C. Singhal, K. Eguchi
    PublisherElectrochemical Society Inc.
    Pages3279-3288
    Number of pages10
    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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