Fabrication of bilayered YSZ/SDC electrolyte film by electrophoretic deposition for reduced-temperature operating anode-supported SOFC

Motohide Matsuda, Takushi Hosomi, Kenji Murata, Takehisa Fukui, Michihiro Miyake

    Research output: Contribution to journalArticlepeer-review

    91 Citations (Scopus)

    Abstract

    Bilayered Y2O3-stabilized ZrO2 (YSZ)/Sm2O3-doped CeO2 (SDC) electrolyte films were successfully fabricated on porous NiO-YSZ composite substrates by electrophoretic deposition (EPD) based on electrophoretic filtration followed by co-firing with the substrates. In EPD, positively charged YSZ and SDC powders were deposited directly on the substrates, layer by layer from ethanol-based suspensions. Delamination between YSZ and SDC films was avoided by reducing the SDC films' thickness to ca. 1 μm. A single cell was constructed on the bilayered electrolyte films composed of ca. 4 μm-thick YSZ and ca. 1 μm-thick SDC films. As a cathode in the cell, La0.6Sr0.4Co0.2Fe0.8O3-x (LSCF) was used. Maximum output power densities greater than 0.6 W cm-2 were obtained at 700 °C for the bilayered YSZ/SDC electrolyte cells thus constructed.

    Original languageEnglish
    Pages (from-to)102-107
    Number of pages6
    JournalJournal of Power Sources
    Volume165
    Issue number1
    DOIs
    Publication statusPublished - Feb 25 2007

    Keywords

    • Ceramic processing
    • Electrolyte film
    • Electrophoretic deposition
    • Solid oxide fuel cell

    ASJC Scopus subject areas

    • Renewable Energy, Sustainability and the Environment
    • Energy Engineering and Power Technology
    • Physical and Theoretical Chemistry
    • Electrical and Electronic Engineering

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