Abstract
Modification by surface coating of cathode materials is one of the preferred methods to achieve improved electrochemical performance, especially at a high-charge cut-off voltage. In this study, ZnO-coated LiCoO2 powders were prepared by plasma-enhanced chemical vapor deposition (PE-CVD). In our previous work [1], the roles of ZnO coating in the capacity retention of LiCoO2 during high-voltage cycling in the range of 3.0 V-4.5 V and the thermal stability of the charged LiCoO2 electrode were investigated as a function of the coating amount. This study confirms the positive effect of ZnO coating on cyclic performances of LiCoO2, in particular at various C-rates and operating temperatures. In addition, the structural stability of the LiCoO2 materials coated with different amount of ZnO during cycling was investigated using cyclic voltammetry.
Original language | English |
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Pages (from-to) | e122-e126 |
Journal | Current Applied Physics |
Volume | 10 |
Issue number | 4 SUPPL. |
DOIs | |
Publication status | Published - 2010 Nov |
Keywords
- Cathode materials
- Lithium-ion batteries
- Plasma-enhanced chemical vapor deposition
- Structural stability
- Zinc oxide coating
ASJC Scopus subject areas
- General Materials Science
- General Physics and Astronomy