Improved electrochemical performance and thermal compatibility of Fe- and Cu-doped SmBaCo2O5+delta-Ce0.9Gd0.1O1.95 composite cathode for intermediate-temperature solid oxide fuel cells

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dc.contributor.authorLee, Seung-Junko
dc.contributor.authorKim, Dong-Seokko
dc.contributor.authorPandurangan, Muralidharanko
dc.contributor.authorJo, Seung-Hwanko
dc.contributor.authorKim, Do-Kyungko
dc.date.accessioned2013-03-11T05:42:17Z-
dc.date.available2013-03-11T05:42:17Z-
dc.date.created2012-02-06-
dc.date.created2012-02-06-
dc.date.issued2011-03-
dc.identifier.citationJOURNAL OF POWER SOURCES, v.196, no.6, pp.3095 - 3098-
dc.identifier.issn0378-7753-
dc.identifier.urihttp://hdl.handle.net/10203/98412-
dc.description.abstractFe- and Cu-doped SmBaCo2O5+delta (FC-SBCO)-Ce0.9Gd0.1O1.95 (CGO) composites with various CGO contents (0-40 wt.%) are investigated as new cathode materials for intermediate-temperature solid oxide fuel cells (IT-SOFCs) based on a Ce0.9Gd0.1O1.95 electrolyte. The effect of CGO incorporation on the thermal expansion coefficient (TEC), electrochemical properties and thermal stability of the FC-SBCO-CGO composites is investigated. A composite cathode of 30 wt.% CGO-70 wt.% FC-SBCO (CS30-70) coated on a Ce0.9Gd0.1O1.95 electrolyte shows the lowest area specific resistance (ASR), i.e., 0.049 Omega cm(2) at 700 degrees C. The TEC of the CS30-70 cathode is 14.1 x 10(-6) degrees C-1 up to 900 degrees C, which is a lower value than that of the FC-SBCO (16.6 x 10(-6) degrees C-1) counterpart. Long-term thermal stability and thermal cycle tests of the CS30-70 cathode are performed. Stable ARS values are observed during both type of test. An electrolyte-supported (300-mu m thick) single-cell configuration of CS30-70/CGO/Ni-CGO delivers a maximum power density of 535 mW cm(-2) at 700 degrees C. The unique composite composition of CS30-70 demonstrates improved electrochemical performance and good thermal stability for IT-SOFCs. (C) 2010 Elsevier B.V. All rights reserved.-
dc.languageEnglish-
dc.publisherELSEVIER SCIENCE BV-
dc.titleImproved electrochemical performance and thermal compatibility of Fe- and Cu-doped SmBaCo2O5+delta-Ce0.9Gd0.1O1.95 composite cathode for intermediate-temperature solid oxide fuel cells-
dc.typeArticle-
dc.identifier.wosid000287058800019-
dc.identifier.scopusid2-s2.0-78751612209-
dc.type.rimsART-
dc.citation.volume196-
dc.citation.issue6-
dc.citation.beginningpage3095-
dc.citation.endingpage3098-
dc.citation.publicationnameJOURNAL OF POWER SOURCES-
dc.identifier.doi10.1016/j.jpowsour.2010.10.110-
dc.contributor.localauthorKim, Do-Kyung-
dc.type.journalArticleArticle-
dc.subject.keywordAuthorComposite cathode-
dc.subject.keywordAuthorCitrate combustion synthesis-
dc.subject.keywordAuthorDouble-perovskite-
dc.subject.keywordAuthorElectrochemical performance-
dc.subject.keywordAuthorIntermediate-temperature-
dc.subject.keywordAuthorSolid oxide fuel cells-
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