Local impedance spectroscopic and microstructural analyses of Al-in-diffused Li7La3Zr2O12
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Ahn, Jee Hyun | - |
dc.contributor.author | Park, Seung-Young | - |
dc.contributor.author | Lee, Jae-Myung | - |
dc.contributor.author | Park, Youngsin | - |
dc.contributor.author | Lee, Jong-Heun | - |
dc.date.accessioned | 2021-09-05T08:47:06Z | - |
dc.date.available | 2021-09-05T08:47:06Z | - |
dc.date.created | 2021-06-15 | - |
dc.date.issued | 2014-05-15 | - |
dc.identifier.issn | 0378-7753 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/98507 | - |
dc.description.abstract | A cylindrical Li7La3Zr2O12 specimen in contact with an Al2O3 crucible is sintered and the effect of Al diffusion on the microstructure, phase composition, and Li-ion conductivity of Li7La3Zr2O12 is investigated. The decrease in the Li-ion conductivity and Al concentration with increasing distance from the contact area with the Al2O3 crucible is confirmed using spatially resolved local-impedance spectroscopy and compositional analysis. The region close to the Al2O3 crucible shows abnormally large grains (size > 0.7 mm) within a matrix of fine grains (size: 10 mu m), abundant intergranular liquid, the Li7La3Zr2O12 phase mostly in cubic form, and a high Li-ion conductivity (8.5 x 10(-5) S cm(-1)). In contrast, the region far from the Al2O3 crucible exhibits uniform fine grains (size: 10 mu m), scarce intergranular liquid, the tetragonal form of the Li7La3Zr2O12 phase, and a low Li-ion conductivity (1.1 x 10(-6) S cm(-1)). The incorporation of Al into the Li7La3Zr2O12 lattice and the resulting increase in the number of Li-ion vacancies is suggested to be the main reason for the increase in the Li-ion conductivity. The origins of the abnormal grain growth induced by the diffusion of Al are discussed in relation to the atomic surface structures of Li7La3Zr2O12 and the presence of intergranular liquid phase. (c) 2014 Elsevier B.V. All rights reserved. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ELSEVIER SCIENCE BV | - |
dc.subject | ABNORMAL GRAIN-GROWTH | - |
dc.subject | SOLID-ELECTROLYTE | - |
dc.subject | SINGLE-CRYSTALS | - |
dc.subject | STATE | - |
dc.subject | INTERFACE | - |
dc.subject | EVOLUTION | - |
dc.title | Local impedance spectroscopic and microstructural analyses of Al-in-diffused Li7La3Zr2O12 | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Lee, Jong-Heun | - |
dc.identifier.doi | 10.1016/j.jpowsour.2013.12.115 | - |
dc.identifier.scopusid | 2-s2.0-84892684382 | - |
dc.identifier.wosid | 000332496300036 | - |
dc.identifier.bibliographicCitation | JOURNAL OF POWER SOURCES, v.254, pp.287 - 292 | - |
dc.relation.isPartOf | JOURNAL OF POWER SOURCES | - |
dc.citation.title | JOURNAL OF POWER SOURCES | - |
dc.citation.volume | 254 | - |
dc.citation.startPage | 287 | - |
dc.citation.endPage | 292 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Electrochemistry | - |
dc.relation.journalResearchArea | Energy & Fuels | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Electrochemistry | - |
dc.relation.journalWebOfScienceCategory | Energy & Fuels | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.subject.keywordPlus | ABNORMAL GRAIN-GROWTH | - |
dc.subject.keywordPlus | SOLID-ELECTROLYTE | - |
dc.subject.keywordPlus | SINGLE-CRYSTALS | - |
dc.subject.keywordPlus | STATE | - |
dc.subject.keywordPlus | INTERFACE | - |
dc.subject.keywordPlus | EVOLUTION | - |
dc.subject.keywordAuthor | Zirconium-containing lithium garnet | - |
dc.subject.keywordAuthor | Solid state lithium-ion conductor | - |
dc.subject.keywordAuthor | All-solid lithium-ion battery | - |
dc.subject.keywordAuthor | Impedance spectroscopy | - |
dc.subject.keywordAuthor | Abnormal grain growth | - |
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.