2013年
Effects of ZrO2 Coating on LiCoO2 Thin-Film Electrode Studied by In Situ X-ray Absorption Spectroscopy
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
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- 巻
- 160
- 号
- 5
- 開始ページ
- A3054
- 終了ページ
- A3060
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1149/2.006305jes
- 出版者・発行元
- ELECTROCHEMICAL SOC INC
Surface modification effects on interfacial reaction for zirconia (ZrO2) coated lithium cobalt oxide (LiCoO2) are studied. ZrO2-coated LiCoO2 thin-film electrodes are prepared by a pulsed laser deposition with different preparation periods. Cyclic voltammetry measurements clearly show that cycle performance and high-potential durability are improved by the ZrO2 coating. AC impedance spectroscopy reveals that there are two types of resistance associated with ZrO2 coating; one Is the charge transfer resistance which depends on the Li+-containing electrolyte concentration, and the other is the ZrO2-layer resistance which depends on the deposition periods of ZrO2 coatings. In situ total-reflection fluorescence X-ray absorption spectroscopy for ZrO2-coated LiCoO2 thin-film electrodes reveals that the ZrO2 coating layer suppresses the reduction reaction by electrolyte contact, leading to improving its cycle performance. Depth-resolved X-ray absorption spectroscopy reveals that the ZrO2 coating layer can prevent the increase of local distortion of the LiCoO2 electrode when overcharged, leading to high-potential durability. (C) 2013 The Electrochemical Society.
- リンク情報
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- DOI
- https://doi.org/10.1149/2.006305jes
- J-GLOBAL
- https://jglobal.jst.go.jp/detail?JGLOBAL_ID=201302259766103659
- Web of Science
- https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000320202800010&DestApp=WOS_CPL
- URL
- http://www.scopus.com/inward/record.url?eid=2-s2.0-84875714806&partnerID=MN8TOARS
- URL
- http://orcid.org/0000-0002-1491-2647
- ID情報
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- DOI : 10.1149/2.006305jes
- ISSN : 0013-4651
- eISSN : 1945-7111
- J-Global ID : 201302259766103659
- ORCIDのPut Code : 42857415
- SCOPUS ID : 84875714806
- Web of Science ID : WOS:000320202800010