High Temperature Defect Equilibrium, Solid State Properties and Crystal Structure of La 0.6 Sr 0.4 Co 1-y Fe y O 3-δ (y=0.2, 0.4, 0.6, 0.8) for Cathode of Solid Oxide Fuel Cells

Oxygen nonstoichiometry of La0.6Sr0.4Co1-yFeyO3-δ (y=0.2, 0.8) were measured by high temperature gravimetry and coulometric titration as a function of temperature and oxygen partial pressure. The lattice constant is also observed by HT-XRD as a function of temperature and oxygen partial pressure. Th...

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Bibliographic Details
Published in:ECS transactions 2009-09, Vol.25 (2), p.2375-2380
Main Authors: Fukuda, Yasuhiro, Hashimoto, Shin-ichi, Sato, Kazuhisa, Yashiro, Keiji, Mizusaki, Junichiro
Format: Article
Language:English
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Summary:Oxygen nonstoichiometry of La0.6Sr0.4Co1-yFeyO3-δ (y=0.2, 0.8) were measured by high temperature gravimetry and coulometric titration as a function of temperature and oxygen partial pressure. The lattice constant is also observed by HT-XRD as a function of temperature and oxygen partial pressure. The relationship between lattice constant and oxygen deficiency is determined from these results. Almost linear behavior was obtained between them.
ISSN:1938-5862
1938-6737
DOI:10.1149/1.3205790