Author:
Wang Zhaoxiang,Huang Xuejie,Chen Liquan
Abstract
Comparative study has been carried out by Fourier transform infrared and X-ray photoelectron spectroscopy to understand the electrochemical performance improvement of nanometer-sized magnesium oxide (nano-MgO) modified commercial
LiCoO
2
(
MgO
/
LiCoO
2
)
cathode materials for lithium-ion batteries. It is found that the configuration of the solvent molecules of the electrolyte are very sensitive to the disturbance of nano-MgO and commercial
LiCoO
2
.
Modifying the surface of commercial
LiCoO
2
particles with nano-MgO can suppress such chemical reactions on the electrode surface significantly. In addition, by hindering the formation of oxygen with high oxidizing power and by physically separating the electrolyte from direct contact with the active cathode material, surface coating suppresses the interaction between
LiCoO
2
and the electrolyte at the uncharged state and alleviates the electrolyte decomposition at charged states. © 2002 The Electrochemical Society. All rights reserved.
Publisher
The Electrochemical Society
Subject
Materials Chemistry,Electrochemistry,Surfaces, Coatings and Films,Condensed Matter Physics,Renewable Energy, Sustainability and the Environment,Electronic, Optical and Magnetic Materials
Cited by
92 articles.
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