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Fabrication of anode-supported zirconia thin film electrolyte based core–shell particle structure for intermediate temperature solid oxide fuel cells

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Abstract

With a view to produce intermediate temperature SOFCs, yttria and scandia doped zirconia with a core–shell structure was prepared, then an anode supported fuel cell was fabricated by a spray method. The influences of the scandia content in the electrolyte and atmosphere conditions used in the testing experiments on phase composition, microstructure and fuel cell performance were investigated. The electrolyte was composed of cubic and tetragonal phases and SEM pictures revealed very fine grain sizes and a smooth surface of the electrolyte film, though some defects were observed in samples with high Scandia content. Coating scandia on partially stabilized zirconium particles improves both ionic conductivity of the electrolyte and power density of the fuel cell distinctly below 750 °C. Anodes were pre-sintered at 1200 °C before co-sintering with the electrolyte film to ensure that the shrinkage percentage was close to that of the electrolyte during co-sintering, avoiding warping of cell.
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Original languageEnglish
Pages (from-to)302–307
JournalProgress in Natural Science: Materials International
Volume23
Issue number3
Early online date25 May 2013
DOIs
Publication statusPublished - Jun 2013

    Research areas

  • Thin film, Core-shell, Solid oxide fuel cells, Spray, Zirconia

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