Electrochemical stability in cerium-phosphate–coated LiCoO 2 thin films
The electrochemical stability of LiCoO 2 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 capacit...
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| Published in: | Journal of materials research Vol. 22; no. 3; pp. 688 - 694 |
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| Main Authors: | , , , , , |
| Format: | Journal Article |
| Language: | English |
| Published: |
01-03-2007
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| Online Access: | Get full text |
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| Summary: | The electrochemical stability of LiCoO
2
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 LiCoO
2
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 LiCoO
2
thin film, instead of the nanocrystal formation in the amorphous coating layer. |
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| ISSN: | 0884-2914 2044-5326 |
| DOI: | 10.1557/jmr.2007.0092 |