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Influence of anode pore forming additives on the densification of supported BaCe0.7Ta0.1Y0.2O3−δ electrolyte membranes based on a solid state reaction
- Source :
-
Journal of the European Ceramic Society . Sep2009, Vol. 29 Issue 12, p2567-2573. 7p. - Publication Year :
- 2009
-
Abstract
- 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 5h, the BCTY10 membrane on a NiO–BCTY10 anode containing 30wt.% 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 12μm thick BCTY10 electrolyte generated maximum power densities of 142, 93, 29mW/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. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 09552219
- Volume :
- 29
- Issue :
- 12
- Database :
- Academic Search Index
- Journal :
- Journal of the European Ceramic Society
- Publication Type :
- Academic Journal
- Accession number :
- 41240998
- Full Text :
- https://doi.org/10.1016/j.jeurceramsoc.2009.02.017