PrBaCo2O6-δ - Ce0.8Sm0.2O1.9 composite cathodes for intermediate temperature solid oxide fuel cells / Tsvetkov D.S., Tsvetkova N.S., Ivanov I.L., Malyshkin D.A., Sereda V.V., Zuev A.Yu. // ECS Transactions. - 2015. - V. 68, l. 1. - P. 965-976.

ISSN:
19385862
Type:
Conference Paper
Abstract:
The single phase oxide PrBaCo2O6-δ and composites (100-y) PrBaCo2O6-δ - y Ce0.8Sm0.2O1.9 (y = 10-30 wt.%) were investigated as cathode materials for intermediate temperature solid oxide fuel cells. The chemical compatibility, thermal expansion, DC conductivity and electrochemical performance of these materials were studied. As a result, exchange by Pr and Sm was found between PrBaCo2O6-δ and Ce0.8Sm0.2O1.9. Cation exchange for both oxides was found not to lead to change of the crystal structure and results in slightly decreasing a and c cell parameters for Ce0.8Sm0.2O1.9 and PrBaCo2O6-δ, respectively. This exchange was shown to affect significantly both thermal expansion and total conductivity of the composites studied. As a consequence, thermal expansion coefficient of the composite cathodes exceeds significantly that of the electrolyte. © The Electrochemical Society.
Author keywords:
Index keywords:
Cathodes; Crystal structure; Electrodes; Expansion; Fuel cells; Fuel storage; Gas fuel purification; Thermal expansion; Cath-ode materials; Cation exchanges; Chemical compatibility; Composite cathode;
DOI:
10.1149/06801.0965ecst
Смотреть в Scopus:
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84938778516&doi=10.1149%2f06801.0965ecst&partnerID=40&md5=af508ba21f9d4b2f38eb8085fb185616
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Link https://www.scopus.com/inward/record.uri?eid=2-s2.0-84938778516&doi=10.1149%2f06801.0965ecst&partnerID=40&md5=af508ba21f9d4b2f38eb8085fb185616
Affiliations Department of Chemistry, Institute of Natural Sciences, Ural Federal University, Ekaterinburg, Russian Federation
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Editors Eguchi K.Singhal S.C.
Publisher Electrochemical Society Inc.
Conference name 14th International Symposium on Solid Oxide Fuel Cells, SOFC 2015; held as part of the Electrochemical Society, ECS Conference on Electrochemical Energy Conversion and Storage
Conference date 26 July 2015 through 31 July 2015
Conference code 113202
ISBN 9781607685395
Language of Original Document English
Abbreviated Source Title ECS Transactions
Source Scopus