Comparative Studies on ZnO-Coated and Uncoated LiCoO2 Cycled at Various Rates and Temperatures

Title
Comparative Studies on ZnO-Coated and Uncoated LiCoO2 Cycled at Various Rates and Temperatures
Authors
문석민장원영변동진이중기
Keywords
LiCoO2; Cathode materials; Zinc oxide coating; Plasma-enhanced chemical vapor deposition; Lithium-ion batteries; Structural stability
Issue Date
2010-11
Publisher
Current applied physics
Citation
VOL 10, NO 4, e122-e126
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 Ve4.5 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.
URI
http://pubs.kist.re.kr/handle/201004/38942
ISSN
1567-1739
Appears in Collections:
KIST Publication > Article
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE