Microtubular SOFC using doped LaGaO3 electrolyte film prepared with dip coating method

Kohei Hosoi, Jong Eun Hong, Takaaki Sakai, Shintaro Ida, Tatsumi Ishihara

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4 Citations (Scopus)

Abstract

Preparation of Microtubular cell using doped lanthanum gallate (LSGM) electrolyte with a dip coating and co-sintering process was studied. In order to suppress Ni diffusion from Ni-based anode substrate to LSGM electrolyte layer, Ti added La-doped ceria (Ti-LDC) was inserted as buffer layer. The amount of Ni diffused in LSGM electrolyte was investigated by EDX analysis as a function of sintering temperatures. It was found that sintering at 1350°C is suitable from the sintering density and the Ni diffusion. The cell sintered at 1350°C exhibited the higher power density than that of the conventional LSGM micro-tubular cell, even though a small amount of Ni diffusion was still observed at the Ti-LDC buffer layer/LSGM electrolyte interface. The microtubular cell with around 50μm thickness showed the open circuit potential higher than 1.0V and the maximum power density of 0.69, 0.31 and 0.12W/cm2 at 700, 600 and 500°C, respectively, were achieved.

Original languageEnglish
Pages (from-to)182-186
Number of pages5
JournalJournal of the Ceramic Society of Japan
Volume123
Issue number1436
DOIs
Publication statusPublished - Apr 1 2015

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All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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