Influence of anode pore forming additives on the densification of supported BaCe0.7Ta0.1Y0.2O3−δ electrolyte membranes based on a solid state reaction

Lei Bi, S. Fang, Zetian Tao, Shangquan Zhang, Ranran Peng, Wei Liu

Research output: Contribution to journalArticleAcademic

30 Citations (Scopus)

Abstract

We describe a solid state reaction for the preparation of both NiO–BaCe0.7Ta0.1Y0.2O3−δ anode substrates and BaCe0.7Ta0.1Y0.2O3−δ (BCTY10) electrolyte membranes on porous NiO–BCTY10 anode substrates. The amounts of the pore forming additive in the substrates showed a significant influence on the densification of the BCTY10 membranes. After sintering at 1450 °C for 5 h, the BCTY10 membrane on a NiO–BCTY10 anode containing 30 wt.% starch achieved a high density and showed adequate chemical stability against H2O and CO2. The chemical stability of BCTY10 was even better than that of BaCe0.7Zr0.1Y0.2O3−δ. With a mixture of BaCe0.7Zr0.1Y0.2O3−δ (BZCY7) and La0.7Sr0.3FeO3−δ (LSF) as a cathode, a single fuel cell with 12 μm thick BCTY10 electrolyte generated maximum power densities of 142, 93, 29 mW/cm2 at 700, 600 and 500 °C, respectively. The electrolyte resistance and interfacial polarization resistance of the cell under open circuit conditions were also investigated.
Original languageUndefined
Pages (from-to)2567-2573
JournalJournal of the European Ceramic Society
Volume29
Issue number12
DOIs
Publication statusPublished - 2009

Keywords

  • Pore forming additive
  • Solid state reaction
  • IR-80093
  • Sintering
  • Fuel cell
  • Membranes

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