Electrochemical stability in cerium-phosphate–coated LiCoO2 thin films

The electrochemical stability of LiCoO2 thin films was improved by cerium-phosphate coating deposited at room temperature. The cerium-phosphate coating layer also effectively suppressed the increase of charge-transfer resistance during cycling. However, the cycling stability and the initial capacity...

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Bibliographic Details
Published inJournal of materials research Vol. 22; no. 3; pp. 688 - 694
Main Authors Ahn, Donggi, Kim, Chunjoong, Lee, Joon-Gon, Kim, Byoungsoo, Park, Yejun, Park, Byoungwoo
Format Journal Article
LanguageEnglish
Published New York, USA Cambridge University Press 01.03.2007
Subjects
Coating
Energy storage
Li
Coating
Energy storage
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Summary:The electrochemical stability of LiCoO2 thin films was improved by cerium-phosphate coating deposited at room temperature. The cerium-phosphate coating layer also effectively suppressed the increase of charge-transfer resistance during cycling. However, the cycling stability and the initial capacity of the coated LiCoO2 thin films deteriorated as the annealing temperature increased, different from other metal-phosphate coating. These phenomena were attributed to the interdiffusion between the cerium-phosphate coating layer and LiCoO2 thin film, instead of the nanocrystal formation in the amorphous coating layer.
Bibliography:PII:S0884291400093080
ark:/67375/6GQ-LR7K6WCX-4
istex:9AB91E58F5890324985B388BE29C5A9414D3726A
ArticleID:09308
ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0884-2914
2044-5326
DOI:10.1557/jmr.2007.0092