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dc.citation.endPage 19912 -
dc.citation.number 45 -
dc.citation.startPage 19906 -
dc.citation.title PHYSICAL CHEMISTRY CHEMICAL PHYSICS -
dc.citation.volume 15 -
dc.contributor.author Jun, Areum -
dc.contributor.author Shin, Jeeyoung -
dc.contributor.author Kim, Guntae -
dc.date.accessioned 2023-12-22T03:11:48Z -
dc.date.available 2023-12-22T03:11:48Z -
dc.date.created 2013-11-19 -
dc.date.issued 2013-12 -
dc.description.abstract Cobalt-containing cathodes often encounter problems such as high thermal expansion coefficients (TEC) and poor stability, making them unsuitable for practical use as cathode materials for intermediate-temperature solid oxide fuel cells (IT-SOFCs). This study focuses on the effects of Cu doping in the Co site of SmBa0.5Sr0.5Co2O5+δ in terms of structural characteristics, electrical properties, electrochemical performance, redox properties, and performance stability as an IT-SOFC cathode material. The TEC value of a SmBa0.5Sr0.5Co 1.5Cu0.5O5+δ (SBSCCu50) sample is 12.8 × 10-6 K-1, which is lower than that (13.7 × 10-6 K-1) of a SmBa0.5Sr0.5Co 2O5+δ (SBSCO) sample at 700 °C. SBSCCu50 showed higher redox stability at lower p(O2) and a more stable cell power output while retaining desirable electrochemical performance, as compared with SBSCO. SBSCCu50 displayed reduced TEC values and enhanced redox and performance stability, as well as satisfactory electrical properties and electrochemical performance under typical fuel cell operating conditions. The results indicate that SBSCCu50 is a promising material as a cathode for IT-SOFCs. -
dc.identifier.bibliographicCitation PHYSICAL CHEMISTRY CHEMICAL PHYSICS, v.15, no.45, pp.19906 - 19912 -
dc.identifier.doi 10.1039/c3cp53883d -
dc.identifier.issn 1463-9076 -
dc.identifier.scopusid 2-s2.0-84886991907 -
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/2679 -
dc.identifier.url http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84886991907 -
dc.identifier.wosid 000326470200046 -
dc.language 영어 -
dc.publisher ROYAL SOC CHEMISTRY -
dc.title High redox and performance stability of layered SmBa0.5Sr 0.5Co1.5Cu0.5O5+δ perovskite cathodes for intermediate-temperature solid oxide fuel cells -
dc.type Article -
dc.relation.journalWebOfScienceCategory Chemistry, Physical; Physics, Atomic, Molecular & Chemical -
dc.relation.journalResearchArea Chemistry; Physics -
dc.description.journalRegisteredClass scie -
dc.description.journalRegisteredClass scopus -

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