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DC Field | Value | Language |
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dc.citation.endPage | 223 | - |
dc.citation.startPage | 217 | - |
dc.citation.title | ELECTROCHIMICA ACTA | - |
dc.citation.volume | 81 | - |
dc.contributor.author | Choi, Sihyuk | - |
dc.contributor.author | Shin, Jeeyoung | - |
dc.contributor.author | Ok, Kang Min | - |
dc.contributor.author | Kim, Guntae | - |
dc.date.accessioned | 2023-12-22T04:41:25Z | - |
dc.date.available | 2023-12-22T04:41:25Z | - |
dc.date.created | 2013-06-11 | - |
dc.date.issued | 2012-10 | - |
dc.description.abstract | The effect of Sr substitution for Nd on Nd1-xSrxCoO3-delta (NSC)(x = 0.3, 0.4, 0.5, 0.6, and 0.7) is investigated to evaluate NSC as a cathode material based on Gd0.1Ce0.9O1.95 (GDC) electrolyte for intermediate-temperature solid oxide fuel cells (IT-SOFCs). The NSC powders are prepared by the glycine nitrate method. At a given temperature, the electrical conductivity increases with increasing Sr content up to x = 0.5 and then decreases for x > 0.5. The redox behavior of NSC (x = 0.3, 0.5, and 0.7) cathodes is studied by the coulometric titration at 700 degrees C. In order to investigate the area specific resistances of NSC-GDC cathodes, symmetrical half cells (cathode/electrolyte/cathode) are measured using impedance spectroscopy at various temperatures in air under open circuit voltage (OCV) condition. The electrochemical performance of NSC-GDC cathodes is measured using an NSC-GDC/GDC/Ni-GDC anode supported cell. The maximum power density of NSC-GDC cathodes increases with increasing strontium content up to x = 0.5 and then decreases at 700 degrees C. In terms of electrical conductivity and electrochemical performance, Nd1-xSrxCoO3-delta (x = 0.5) is more suitable as a cathode material based on GDC electrolyte in IT-SOFC applications. | - |
dc.identifier.bibliographicCitation | ELECTROCHIMICA ACTA, v.81, pp.217 - 223 | - |
dc.identifier.doi | 10.1016/j.electacta.2012.07.090 | - |
dc.identifier.issn | 0013-4686 | - |
dc.identifier.scopusid | 2-s2.0-84865286691 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/2976 | - |
dc.identifier.url | http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84865286691 | - |
dc.identifier.wosid | 000309330500032 | - |
dc.language | 영어 | - |
dc.publisher | PERGAMON-ELSEVIER SCIENCE LTD | - |
dc.title | Chemical compatibility, redox behavior, and electrochemical performance of Nd1-xSrxCoO3-delta cathodes based on Ce1.9Gd0.1O1.95 for intermediate-temperature solid oxide fuel cells | - |
dc.type | Article | - |
dc.relation.journalWebOfScienceCategory | Electrochemistry | - |
dc.relation.journalResearchArea | Electrochemistry | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | Solid oxide fuel cells | - |
dc.subject.keywordAuthor | Cathode | - |
dc.subject.keywordAuthor | Electrical conductivity | - |
dc.subject.keywordAuthor | Oxygen non-stoichiometry | - |
dc.subject.keywordAuthor | Electrochemical performance | - |
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