Comparative studies on ZnO-coated and uncoated LiCoO2 cycled at various rates and temperatures

Seok Min Moon; Wonyoung Chang; Dongjin Byun; Joong Kee Lee

doi:10.1016/j.cap.2010.07.031

Comparative studies on ZnO-coated and uncoated LiCoO₂ cycled at various rates and temperatures

Seok Min Moon, Wonyoung Chang, Dongjin Byun, Joong Kee Lee

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

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
Pages (from-to)	e122-e126
Journal	Current Applied Physics
Volume	10
Issue number	4 SUPPL.
DOIs	https://doi.org/10.1016/j.cap.2010.07.031
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

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.cap.2010.07.031

Cite this

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title = "Comparative studies on ZnO-coated and uncoated LiCoO2 cycled at various rates and temperatures",

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.",

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