Preparation of Ni-Fe bimetallic porous anode support for solid oxide fuel cells using LaGaO3 based electrolyte film with high power density

Young Wan Ju, Hiroyuki Eto, Toru Inagaki, Shintaro Ida, Tatsumi Ishihara

    研究成果: ジャーナルへの寄稿学術誌査読

    64 被引用数 (Scopus)

    抄録

    Optimization of sintering temperature for NiO-Fe2O3 composite oxide substrate was studied in order to obtain a dense substrate with smooth surface. By in situ reduction, the substrate was changed to a porous Ni-Fe alloy metal. The volumetric shrinkage and porosity of the substrate were also studied systematically with the Ni-Fe substrate reduced at different temperatures. A Sr and Mg-doped LaGaO3 (LSGM) thin film was prepared on dense substrate by the pulsed laser deposition (PLD) method. The LSGM film with stoichiometric composition was successfully prepared under optimal deposition parameters and a target composition. Sm0.5Sr0.5CoO3 (SSC55) cathode was prepared by the slurry coating method on the deposited film. Prepared SOFC single cell shows high power density and the maximum power density (MPD) achieved was 1.79, 0.82 and 0.29 W cm-2 at 973, 873 and 773 K, respectively. After thermal cycle from 973 to 298 K, the cell shows almost theoretical open circuit potential (1.1 V) and the power density of 1.62 W cm-2, which is almost the same as that at first cycles. Therefore, the Ni-Fe porous metal support made by the selective reduction is highly promising as a metal anode substrate for SOFC using LaGaO3 thin film.

    本文言語英語
    ページ(範囲)6294-6300
    ページ数7
    ジャーナルJournal of Power Sources
    195
    19
    DOI
    出版ステータス出版済み - 10月 1 2010

    !!!All Science Journal Classification (ASJC) codes

    • 再生可能エネルギー、持続可能性、環境
    • エネルギー工学および電力技術
    • 物理化学および理論化学
    • 電子工学および電気工学

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