Email this article Modification of mixed conducting Ba0.5Sr0.5Co0.8Fe0.2O3–δ by partial substitution of cobalt with tungsten
- Authors: Popov M.P.1, Bychkov S.F.1, Nemudry A.P.1,2
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Affiliations:
- Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch
- Novosibirsk State University
- Issue: Vol 52, No 7 (2016)
- Pages: 648-654
- Section: Article
- URL: https://journals.rcsi.science/1023-1935/article/view/187976
- DOI: https://doi.org/10.1134/S1023193516070156
- ID: 187976
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Abstract
The Ba0.5Sr0.5Co0.8–xWxFe0.2O3–δ (х = 0–0.1) materials prepaMIECred by partial substitution of cobalt in BSCF with tungsten were studied. The tungsten solubility limit in the structure of cubic perovskite BSCF was shown to be ~2%. The doping with the highly charged W6+ (2%) cation improved the functional properties of BSCF: it increased the oxygen permeability and membrane stability in the CO2-containing atmosphere and suppressed the cubic–hexagonal perovskite polymorphic transition. This stabilizes high oxygen fluxes during long-term stability tests.
About the authors
M. P. Popov
Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch
Email: nemudry@solid.nsc.ru
Russian Federation, Novosibirsk
S. F. Bychkov
Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch
Email: nemudry@solid.nsc.ru
Russian Federation, Novosibirsk
A. P. Nemudry
Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch; Novosibirsk State University
Author for correspondence.
Email: nemudry@solid.nsc.ru
Russian Federation, Novosibirsk; Novosibirsk
