Effects of MgO Coating on the Structural and Electrochemical Characteristics of LiCoO2 as Cathode Materials for Lithium Ion Battery
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Shim, Jae-Hyun | - |
dc.contributor.author | Lee, Sanghun | - |
dc.contributor.author | Park, Sung Soo | - |
dc.date.available | 2020-02-28T17:44:48Z | - |
dc.date.created | 2020-02-06 | - |
dc.date.issued | 2014-04-22 | - |
dc.identifier.issn | 0897-4756 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/12696 | - |
dc.description.abstract | To understand the origin of enhanced electrochemical performances of MgO-coated LiCoO2 as cathode materials for lithium ion battery, we investigate the internal structures of the materials at the nanometer scale. The MgO-coated LiCoO2 are annealed at various temperatures of 750-810 degrees C so as to find the optimized heat-treatment condition. The surface morphologies and crystalline structures are characterized by SEM, TEM, EELS, and XRD. The electrochemical results show that the MgO-coated LiCoO2 delivers a high capacity with excellent retention property. In particular, the sample annealed at 810 degrees C, which possesses the high doping level of Me2+ ion in the Li sites, exhibits the highest retention capacity without undergoing phase transformation in the interfaces between the MgO-coating layer and the bulk LiCoO2 during cycling. Lithium and vacancy ordering in the delithiated state is monitored by TEM measurements. comparison with the bare LiCoO2, we reveal that the MgO-coating layer plays a role in the prevention of lithium and vacancy ordering in the near-interfaces, which is in agreement with the excellent electrochemical cycling performances of the MgO-coated sample annealed at 810 degrees C. As a result, depending on the thermal treatment temperature, the Mg2+ ions from MgO layer diffuse into Co and Li sites in LiCoO2, competitively, and affect the structural stability and electrochemical performances. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.relation.isPartOf | CHEMISTRY OF MATERIALS | - |
dc.subject | DOPED LICOO2 | - |
dc.subject | ELECTRONIC-PROPERTIES | - |
dc.subject | THERMAL-STABILITY | - |
dc.subject | IMPROVEMENT | - |
dc.subject | INTERCALATION | - |
dc.subject | PERFORMANCE | - |
dc.subject | LIXCOO2 | - |
dc.subject | TEMPERATURE | - |
dc.subject | TRANSITION | - |
dc.subject | STORAGE | - |
dc.title | Effects of MgO Coating on the Structural and Electrochemical Characteristics of LiCoO2 as Cathode Materials for Lithium Ion Battery | - |
dc.type | Article | - |
dc.type.rims | ART | - |
dc.description.journalClass | 1 | - |
dc.identifier.wosid | 000334991300009 | - |
dc.identifier.doi | 10.1021/cm403846a | - |
dc.identifier.bibliographicCitation | CHEMISTRY OF MATERIALS, v.26, no.8, pp.2537 - 2543 | - |
dc.identifier.scopusid | 2-s2.0-84899408339 | - |
dc.citation.endPage | 2543 | - |
dc.citation.startPage | 2537 | - |
dc.citation.title | CHEMISTRY OF MATERIALS | - |
dc.citation.volume | 26 | - |
dc.citation.number | 8 | - |
dc.contributor.affiliatedAuthor | Lee, Sanghun | - |
dc.type.docType | Article | - |
dc.subject.keywordPlus | DOPED LICOO2 | - |
dc.subject.keywordPlus | ELECTRONIC-PROPERTIES | - |
dc.subject.keywordPlus | THERMAL-STABILITY | - |
dc.subject.keywordPlus | IMPROVEMENT | - |
dc.subject.keywordPlus | INTERCALATION | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | LIXCOO2 | - |
dc.subject.keywordPlus | TEMPERATURE | - |
dc.subject.keywordPlus | TRANSITION | - |
dc.subject.keywordPlus | STORAGE | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
1342, Seongnam-daero, Sujeong-gu, Seongnam-si, Gyeonggi-do, Republic of Korea(13120)031-750-5114
COPYRIGHT 2020 Gachon 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.