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, Shumin Fang, Zetian Tao, Shangquan Zhang, Ranran Peng, Wei Liu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

33 Scopus citations

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 languageEnglish (US)
Pages (from-to)2567-2573
Number of pages7
JournalJournal of the European Ceramic Society
Volume29
Issue number12
DOIs
StatePublished - Sep 1 2009

Keywords

  • Fuel cell
  • Membranes
  • Pore forming additive
  • Sintering
  • Solid state reaction

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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