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DC Field | Value | Language |
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dc.citation.endPage | 17 | - |
dc.citation.startPage | 10 | - |
dc.citation.title | JOURNAL OF POWER SOURCES | - |
dc.citation.volume | 201 | - |
dc.contributor.author | Choi, Sihyuk | - |
dc.contributor.author | Shin, Jeeyoung | - |
dc.contributor.author | Kim, Guntae | - |
dc.date.accessioned | 2023-12-22T05:16:59Z | - |
dc.date.available | 2023-12-22T05:16:59Z | - |
dc.date.created | 2013-06-17 | - |
dc.date.issued | 2012-03 | - |
dc.description.abstract | The effect of Fe substitution for Co on the thermodynamic and electrical properties of the double perovskites, PrBaCo2-xFexO5+delta (PBCF, x = 0, 0.5, 1), are investigated as cathode materials for intermediate-temperature solid oxide fuel cells (IT-SOFCs). At a given temperature, the electrical conductivity decreases with increasing Fe content, x, in the PBCF-YSZ composites in air. PBCF-YSZ (x = 1) composite appear to be more stable than PBCF-YSZ (x = 0) composite down to lower oxygen partial pressure, p(O-2), at the same temperature. The higher oxidation enthalpies of the x = 1 composite can also explain the superior stability at roughly the same p(O-2). The high entropy change for the x =1 composite can indicate the high probability in the formation of interstitial oxygen at approximately the same p(O-2). Impedance spectra of symmetrical cells (PBCF-YSZ/YSZ/PBCF-YSZ) show lower cathode polarization losses with increasing amounts of Fe. The maximum power densities of x = 0 composite and x = 0.5 composite are 0.68 and 0.72 W cm(-2), respectively, at 973 K. The maximum power density of the x = 1 composite is, however, about 20% higher than that of the other composites. Considering redox stability and electrochemical performance, higher Fe content of PrBaCo2-xFexO5+delta (x = 1) is more suitable as a cathode material than x = 0 composite in IT-SOFC application. | - |
dc.identifier.bibliographicCitation | JOURNAL OF POWER SOURCES, v.201, pp.10 - 17 | - |
dc.identifier.doi | 10.1016/j.jpowsour.2011.09.096 | - |
dc.identifier.issn | 0378-7753 | - |
dc.identifier.scopusid | 2-s2.0-83655161378 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/3518 | - |
dc.identifier.url | http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=83655161378 | - |
dc.identifier.wosid | 000300264400002 | - |
dc.language | 영어 | - |
dc.publisher | ELSEVIER SCIENCE BV | - |
dc.title | The electrochemical and thermodynamic characterization of PrBaCo2-xFexO5+delta (x=0, 0.5, 1) infiltrated into yttria-stabilized zirconia scaffold as cathodes for solid oxide fuel cells | - |
dc.type | Article | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary | - |
dc.relation.journalResearchArea | Chemistry; Electrochemistry; Energy & Fuels; Materials Science | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | Solid oxide fuel cells | - |
dc.subject.keywordAuthor | Cathode | - |
dc.subject.keywordAuthor | Double perovskite | - |
dc.subject.keywordAuthor | Oxygen nonstoichiometry | - |
dc.subject.keywordAuthor | Thermodynamic property | - |
dc.subject.keywordAuthor | Electrochemical performance | - |
dc.subject.keywordPlus | OXYGEN NONSTOICHIOMETRY | - |
dc.subject.keywordPlus | ELECTRICAL-PROPERTIES | - |
dc.subject.keywordPlus | COMPOSITE CATHODES | - |
dc.subject.keywordPlus | SURFACE EXCHANGE | - |
dc.subject.keywordPlus | GDBACO2O5+X | - |
dc.subject.keywordPlus | ELECTRODES | - |
dc.subject.keywordPlus | DIFFUSION | - |
dc.subject.keywordPlus | LA2-XSRXNIO4+DELTA | - |
dc.subject.keywordPlus | PEROVSKITES | - |
dc.subject.keywordPlus | PERFORMANCE | - |
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