DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, Jung Hyun | ko |
dc.contributor.author | Kim, Yongmin | ko |
dc.contributor.author | Connor, Paul A. | ko |
dc.contributor.author | Irvine, John T. S. | ko |
dc.contributor.author | Bae, Joongmyeon | ko |
dc.contributor.author | Zhou, Wuzong | ko |
dc.date.accessioned | 2013-03-11T20:09:29Z | - |
dc.date.available | 2013-03-11T20:09:29Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 2009-12 | - |
dc.identifier.citation | JOURNAL OF POWER SOURCES, v.194, no.2, pp.704 - 711 | - |
dc.identifier.issn | 0378-7753 | - |
dc.identifier.uri | http://hdl.handle.net/10203/100143 | - |
dc.description.abstract | The synthesis, conductivity properties, area specific resistance (ASR) and thermal expansion behaviour of the layered perovskite SmBaCo2O5+d (SBCO) are investigated for use as a cathode material for intermediate-temperature solid oxide fuel cells (IT-SOFCs). The SBCO is prepared and shows the expected orthorhombic pattern. The electrical conductivity of SBCO exhibits a metal-insulator transition at about 200 degrees C. The maximum conductivity is 570 S cm(-1) at 200 degrees C and its value is higher than 170 S cm(-1) over the whole temperature range investigated. Under variable oxygen partial pressure SBCO is found to be a p-type conductor. The ASR of a composite cathode (50 wt% SBCO and 50 wt% Ce0.9Gd0.1O2-d. SBCO:50) on a Ce0.9Gd0.1O2-d (CGO91) electrolyte is 0.05 Omega cm(2) at 700 degrees C. An abrupt increase in thermal expansion is observed in the vicinity of 320 degrees C and is ascribed to the generation of oxygen vacancies. The coefficients of thermal expansion (CTE) of SBCO is 19.7 and 20.0 x 10(-6) K-1 at 600 and 700 degrees C, respectively. By contrast, CTE values for SBCO:50 are 12.3, 12.5 and 12.7 x 10(-6) K-1 at 500, 600 and 700 degrees C, that is, very similar to the value of the CGO91 electrolyte. (C) 2009 Elsevier B.V. All rights reserved. | - |
dc.language | English | - |
dc.publisher | ELSEVIER SCIENCE BV | - |
dc.subject | ELECTRICAL-PROPERTIES | - |
dc.subject | PHASE-TRANSITION | - |
dc.subject | SPIN-STATE | - |
dc.subject | CONDUCTIVITY | - |
dc.subject | GD | - |
dc.subject | SM | - |
dc.subject | DY | - |
dc.subject | LNBACO(2)O(5+DELTA) | - |
dc.subject | SYSTEM | - |
dc.subject | PR | - |
dc.title | Structural, thermal and electrochemical properties of layered perovskite SmBaCo2O5+d, a potential cathode material for intermediate-temperature solid oxide fuel cells | - |
dc.type | Article | - |
dc.identifier.wosid | 000270620500017 | - |
dc.identifier.scopusid | 2-s2.0-69449097341 | - |
dc.type.rims | ART | - |
dc.citation.volume | 194 | - |
dc.citation.issue | 2 | - |
dc.citation.beginningpage | 704 | - |
dc.citation.endingpage | 711 | - |
dc.citation.publicationname | JOURNAL OF POWER SOURCES | - |
dc.identifier.doi | 10.1016/j.jpowsour.2009.06.024 | - |
dc.contributor.localauthor | Bae, Joongmyeon | - |
dc.contributor.nonIdAuthor | Connor, Paul A. | - |
dc.contributor.nonIdAuthor | Irvine, John T. S. | - |
dc.contributor.nonIdAuthor | Zhou, Wuzong | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | Layered perovskite | - |
dc.subject.keywordAuthor | Solid oxide fuel cell | - |
dc.subject.keywordAuthor | Cathode | - |
dc.subject.keywordAuthor | Electrical conductivity | - |
dc.subject.keywordAuthor | Area specific resistance | - |
dc.subject.keywordPlus | ELECTRICAL-PROPERTIES | - |
dc.subject.keywordPlus | PHASE-TRANSITION | - |
dc.subject.keywordPlus | SPIN-STATE | - |
dc.subject.keywordPlus | CONDUCTIVITY | - |
dc.subject.keywordPlus | GD | - |
dc.subject.keywordPlus | SM | - |
dc.subject.keywordPlus | DY | - |
dc.subject.keywordPlus | LNBACO(2)O(5+DELTA) | - |
dc.subject.keywordPlus | SYSTEM | - |
dc.subject.keywordPlus | PR | - |
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