Interfacial modification of La0.80Sr0.20MnO3-delta-Er0.4Bi0.6O3 cathodes for high performance lower temperature solid oxide fuel cells

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dc.contributor.authorLee, Kang Taekko
dc.contributor.authorJung, Doh Wonko
dc.contributor.authorYoon, Hee Sungko
dc.contributor.authorLidie, Ashley A.ko
dc.contributor.authorCamaratta, Matthew A.ko
dc.contributor.authorWachsman, Eric D.ko
dc.date.accessioned2020-03-19T03:22:58Z-
dc.date.available2020-03-19T03:22:58Z-
dc.date.created2020-03-02-
dc.date.created2020-03-02-
dc.date.issued2012-12-
dc.identifier.citationJOURNAL OF POWER SOURCES, v.220, pp.324 - 330-
dc.identifier.issn0378-7753-
dc.identifier.urihttp://hdl.handle.net/10203/272866-
dc.description.abstractThe performance of conventional La0.80Sr0.20MnO3-delta (LSM) cathodes was dramatically improved using a highly conductive Er-0.4Bi1.6O3 (ESB) phase. ESB was utilized not only as the ion-conducting phase in the LSM-ESB cathode, but also as an electrolyte coupled to the LSM-ESB cathode. The electrode area specific resistance (ASR) measured from a symmetric cell consisting of LSM-ESB electrodes on an ESB electrolyte was only 0.43 Omega cm(2) at 600 degrees C, which is similar to 60% lower than that of identical LSM-ESB cathodes on Gd0.1Ce0.9O1.95 (GDC) electrolytes (1.11 Omega cm(2)). Deconvolution of the impedance spectra reveals that this significantly smaller cathode ASR with an ESB electrolyte is due to a higher rate of oxygen incorporation at the cathode/ESB electrolyte interface. The maximum power density (MPD) of an anode-supported solid oxide fuel cell (SOFC) with an LSM-ESB cathode on an ESB/GDC bilayered electrolyte reached similar to 1013 mW cm(-2) at 650 degrees C. The measured MPDs at low temperatures, from 450 to 650 degrees C, are to date the highest reported values for SOFCs using LSM-based composite cathodes. (C) 2012 Elsevier B.V. All rights reserved.-
dc.languageEnglish-
dc.publisherELSEVIER SCIENCE BV-
dc.titleInterfacial modification of La0.80Sr0.20MnO3-delta-Er0.4Bi0.6O3 cathodes for high performance lower temperature solid oxide fuel cells-
dc.typeArticle-
dc.identifier.wosid000309990300045-
dc.identifier.scopusid2-s2.0-84865296314-
dc.type.rimsART-
dc.citation.volume220-
dc.citation.beginningpage324-
dc.citation.endingpage330-
dc.citation.publicationnameJOURNAL OF POWER SOURCES-
dc.identifier.doi10.1016/j.jpowsour.2012.08.004-
dc.contributor.localauthorLee, Kang Taek-
dc.contributor.nonIdAuthorJung, Doh Won-
dc.contributor.nonIdAuthorYoon, Hee Sung-
dc.contributor.nonIdAuthorLidie, Ashley A.-
dc.contributor.nonIdAuthorCamaratta, Matthew A.-
dc.contributor.nonIdAuthorWachsman, Eric D.-
dc.description.isOpenAccessN-
dc.type.journalArticleArticle-
dc.subject.keywordAuthorLower temperature solid oxide fuel cells-
dc.subject.keywordAuthorStabilized bismuth oxides-
dc.subject.keywordAuthorLanthanum strontium manganese oxides-
dc.subject.keywordAuthorHigh performance cathodes-
dc.subject.keywordPlusYTTRIA-STABILIZED ZIRCONIA-
dc.subject.keywordPlusSURFACE EXCHANGE COEFFICIENTS-
dc.subject.keywordPlusCOMPOSITE SOFC CATHODES-
dc.subject.keywordPlusBILAYERED ELECTROLYTES-
dc.subject.keywordPlusIMPEDANCE SPECTROSCOPY-
dc.subject.keywordPlus(LA,SR)MNO3 CATHODES-
dc.subject.keywordPlusOXYGEN-TRANSFER-
dc.subject.keywordPlusIT-SOFCS-
dc.subject.keywordPlusCONDUCTIVITY-
dc.subject.keywordPlusELECTRODES-
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