Oxygen Surface Exchange at Grain Boundaries of Oxide Ion Conductors
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lee, Wonyoung | - |
dc.contributor.author | Jung, Hee Joon | - |
dc.contributor.author | Lee, Min Hwan | - |
dc.contributor.author | Kim, Young Beom | - |
dc.contributor.author | Park, Joong Sun | - |
dc.contributor.author | Sinclair, Robert | - |
dc.contributor.author | Prinz, Fritz B. | - |
dc.date.accessioned | 2022-07-16T16:10:41Z | - |
dc.date.available | 2022-07-16T16:10:41Z | - |
dc.date.created | 2021-05-13 | - |
dc.date.issued | 2012-03 | - |
dc.identifier.issn | 1616-301X | - |
dc.identifier.uri | https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/166016 | - |
dc.description.abstract | The role of grain boundaries on oxygen surface exchange in an oxide ion conductor is reported. Atomic-scale characterization of the microstructure and chemical composition near the grain boundaries of gadolinia-doped ceria (GDC) thin films show the segregation of dopants and oxygen vacancies along the grain boundaries using the energy dispersive spectroscopy in scanning transmission electron microscopy (STEM-EDS). Kelvin probe microscopy is employed to verify the charge distribution near grain boundaries and shows that the grain boundary is positively charged, indicating a high concentration of oxygen vacancies. AC impedance spectroscopy on polycrystalline GDC membranes with thin interfacial layers with different grain boundary densities at the cathodes demonstrated that the cells with higher grain boundary density result in lower electrode impedance and higher exchange current density. These experimental evidences clearly show that grain boundaries on the surface provide preferential reaction sites for facilitated oxygen incorporation into the GDC electrolyte. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | WILEY-V C H VERLAG GMBH | - |
dc.title | Oxygen Surface Exchange at Grain Boundaries of Oxide Ion Conductors | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kim, Young Beom | - |
dc.identifier.doi | 10.1002/adfm.201101996 | - |
dc.identifier.scopusid | 2-s2.0-84863288271 | - |
dc.identifier.wosid | 000300931500008 | - |
dc.identifier.bibliographicCitation | ADVANCED FUNCTIONAL MATERIALS, v.22, no.5, pp.965 - 971 | - |
dc.relation.isPartOf | ADVANCED FUNCTIONAL MATERIALS | - |
dc.citation.title | ADVANCED FUNCTIONAL MATERIALS | - |
dc.citation.volume | 22 | - |
dc.citation.number | 5 | - |
dc.citation.startPage | 965 | - |
dc.citation.endPage | 971 | - |
dc.type.rims | ART | - |
dc.type.docType | 정기 학술지(letter(letters to the editor)) | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalResearchArea | Physics | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Physics, Applied | - |
dc.relation.journalWebOfScienceCategory | Physics, Condensed Matter | - |
dc.subject.keywordPlus | COMPOSITE ELECTROLYTE | - |
dc.subject.keywordPlus | ELECTRICAL-PROPERTIES | - |
dc.subject.keywordPlus | FUEL-CELL | - |
dc.subject.keywordPlus | ZIRCONIA | - |
dc.subject.keywordPlus | CONDUCTIVITY | - |
dc.subject.keywordPlus | IMPEDANCE | - |
dc.subject.keywordPlus | SEGREGATION | - |
dc.subject.keywordAuthor | doped ceria | - |
dc.subject.keywordAuthor | grain boundaries | - |
dc.subject.keywordAuthor | surface oxygen exchange | - |
dc.subject.keywordAuthor | solid oxide fuel cells | - |
dc.subject.keywordAuthor | vacancy segregation | - |
dc.identifier.url | https://onlinelibrary.wiley.com/doi/10.1002/adfm.201101996 | - |
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