Enhanced oxygen exchange and incorporation at surface grain boundaries on an oxide ion conductor
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Shim, Joon Hyung | - |
dc.contributor.author | Park, Joong Sun | - |
dc.contributor.author | Holme, Timothy P. | - |
dc.contributor.author | Crabb, Kevin | - |
dc.contributor.author | Lee, Wonyoung | - |
dc.contributor.author | Kim, Young Beom | - |
dc.contributor.author | Tian, Xu | - |
dc.contributor.author | Guer, Turgut M. | - |
dc.contributor.author | Prinz, Fritz B. | - |
dc.date.accessioned | 2021-09-06T23:35:27Z | - |
dc.date.available | 2021-09-06T23:35:27Z | - |
dc.date.created | 2021-06-18 | - |
dc.date.issued | 2012-01 | - |
dc.identifier.issn | 1359-6454 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/109227 | - |
dc.description.abstract | This study reports spectrometric and spectroscopic evidence indicating a pronounced role of surface grain boundaries in enhancing oxygen incorporation on oxide ion conducting ceramic yttria stabilized zirconia (YSZ). Oxygen isotope exchange measurements were carried out using high spatial resolution (50 nm) secondary ion mass spectrometry (SIMS) under cathodically biased conditions as well as on bare YSZ surface. Surface mapping of the 180 distribution by SIMS clearly shows high activity at surface grain boundaries, suggesting that these boundary regions provide preferential pathways for oxygen incorporation into YSZ in both cases, albeit the effect is less pronounced without bias. The results are supported by a.c. impedance spectroscopy measurements conducted on polycrystalline YSZ membranes with surface grains engineered for different sizes, which indicate that smaller grains (i.e. higher grain boundary densities) exhibit lower electrode impedances. These results open up the possibility of engineering nanostructured YSZ surfaces containing a high density of grain boundaries to achieve enhanced performance of electrochemical devices, particularly for solid oxide fuel cells operating at low temperatures. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | PERGAMON-ELSEVIER SCIENCE LTD | - |
dc.subject | YTTRIA-STABILIZED ZIRCONIA | - |
dc.subject | FUEL-CELLS | - |
dc.subject | POLYCRYSTALLINE MATERIALS | - |
dc.subject | HIGH-TEMPERATURE | - |
dc.subject | DIFFUSION | - |
dc.subject | SEGREGATION | - |
dc.subject | ELECTROLYTES | - |
dc.subject | CERAMICS | - |
dc.subject | BLOCKING | - |
dc.subject | TZP | - |
dc.title | Enhanced oxygen exchange and incorporation at surface grain boundaries on an oxide ion conductor | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Shim, Joon Hyung | - |
dc.identifier.doi | 10.1016/j.actamat.2011.09.050 | - |
dc.identifier.scopusid | 2-s2.0-80054846937 | - |
dc.identifier.wosid | 000297822300001 | - |
dc.identifier.bibliographicCitation | ACTA MATERIALIA, v.60, no.1, pp.1 - 7 | - |
dc.relation.isPartOf | ACTA MATERIALIA | - |
dc.citation.title | ACTA MATERIALIA | - |
dc.citation.volume | 60 | - |
dc.citation.number | 1 | - |
dc.citation.startPage | 1 | - |
dc.citation.endPage | 7 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalResearchArea | Metallurgy & Metallurgical Engineering | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Metallurgy & Metallurgical Engineering | - |
dc.subject.keywordPlus | YTTRIA-STABILIZED ZIRCONIA | - |
dc.subject.keywordPlus | FUEL-CELLS | - |
dc.subject.keywordPlus | POLYCRYSTALLINE MATERIALS | - |
dc.subject.keywordPlus | HIGH-TEMPERATURE | - |
dc.subject.keywordPlus | DIFFUSION | - |
dc.subject.keywordPlus | SEGREGATION | - |
dc.subject.keywordPlus | ELECTROLYTES | - |
dc.subject.keywordPlus | CERAMICS | - |
dc.subject.keywordPlus | BLOCKING | - |
dc.subject.keywordPlus | TZP | - |
dc.subject.keywordAuthor | Grain boundary | - |
dc.subject.keywordAuthor | Yttria stabilized zirconia | - |
dc.subject.keywordAuthor | Secondary ion mass spectrometry | - |
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
(02841) 서울특별시 성북구 안암로 14502-3290-1114
COPYRIGHT © 2021 Korea University. All Rights Reserved.
Certain data included herein are derived from the © Web of Science of Clarivate Analytics. All rights reserved.
You may not copy or re-distribute this material in whole or in part without the prior written consent of Clarivate Analytics.