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DC Field | Value | Language |
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dc.citation.endPage | 12366 | - |
dc.citation.number | 23 | - |
dc.citation.startPage | 12357 | - |
dc.citation.title | JOURNAL OF MATERIALS CHEMISTRY A | - |
dc.citation.volume | 3 | - |
dc.contributor.author | Chaianansutcharit, Soamwadee | - |
dc.contributor.author | Hosoi, Kohei | - |
dc.contributor.author | Hyodo, Junji | - |
dc.contributor.author | Ju, Young-Wan | - |
dc.contributor.author | Ishihara, Tatsumi | - |
dc.date.accessioned | 2023-12-22T01:09:53Z | - |
dc.date.available | 2023-12-22T01:09:53Z | - |
dc.date.created | 2015-10-21 | - |
dc.date.issued | 2015-06 | - |
dc.description.abstract | Ruddlesden Popper type oxides of LnSr(3)Fe(3)O(10-delta) (Ln - La, Pr, Nd, Sm, Eu, and Gd) have been investigated as active cathodes for solid oxide fuel cells (SOFCs). Among the examined LnSr(3)Fe(3)O(10-delta), it was found that PrSr3Fe3O10-delta shows the highest activity for the cathode reaction. The prepared LnSr(3)Fe(3)O(10-delta) oxides have a tetragonal crystal structure with the space group I4/mmm. With decreasing the ionic size of Ln(3+), the unit cell volume and crystallite size decrease. The temperature and P-O2 dependences of electrical conductivities indicate the metal-like behaviour and the predominant hole conduction. The thermal expansion coefficient (TEC) values derived from the non-linear expansion curves of LnSr(3)Fe(3)O(10-delta) are reasonably compatible with those of La0.9Sr0.1Ga0.8Mg0.2O3 (LSGM) electrolyte. The catalytic activity as cathodes for H-2-SOFCs depended on Ln ions. A high cathodic activity was achieved on LnSr(3)Fe(3)O(10-delta) (PSFO10) and a maximum power density of 0.51 W cm(-2) was achieved at 1073 K when 0.3 mm thick LSGM electrolyte was used. The surface exchange coefficient, k, also confirms the high activity for the dissociation of oxygen on PSFO10. Therefore, PrSr3Fe3O10-delta is highly promising as a cathode for low temperature SOFCs | - |
dc.identifier.bibliographicCitation | JOURNAL OF MATERIALS CHEMISTRY A, v.3, no.23, pp.12357 - 12366 | - |
dc.identifier.doi | 10.1039/c5ta01273b | - |
dc.identifier.issn | 2050-7488 | - |
dc.identifier.scopusid | 2-s2.0-84930939492 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/17527 | - |
dc.identifier.url | http://pubs.rsc.org/en/Content/ArticleLanding/2015/TA/C5TA01273B#!divAbstract | - |
dc.identifier.wosid | 000355736700032 | - |
dc.language | 영어 | - |
dc.publisher | ROYAL SOC CHEMISTRYROYAL SOC CHEMISTRY | - |
dc.title | Ruddlesden Popper oxides of LnSr(3)Fe(3)O(10-delta) (Ln = La, Pr, Nd, Sm, Eu, and Gd) as active cathodes for low temperature solid oxide fuel cells | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical; Energy & Fuels; Materials Science, Multidisciplinary | - |
dc.relation.journalResearchArea | Chemistry; Energy & Fuels; Materials Science | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordPlus | CRYSTAL-CHEMISTRY | - |
dc.subject.keywordPlus | SURFACE EXCHANGE | - |
dc.subject.keywordPlus | PEROVSKITE OXIDE | - |
dc.subject.keywordPlus | DIFFUSIVITY | - |
dc.subject.keywordPlus | COMPOSITE | - |
dc.subject.keywordPlus | CONDUCTOR | - |
dc.subject.keywordPlus | OXIDATION | - |
dc.subject.keywordPlus | ELECTRODE | - |
dc.subject.keywordPlus | LAGAO3 | - |
dc.subject.keywordPlus | YSZ | - |
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