Journal
JOURNAL OF POWER SOURCES
Volume 167, Issue 2, Pages 504-509Publisher
ELSEVIER
DOI: 10.1016/j.jpowsour.2007.02.036
Keywords
surface modification; molten salt; performance improvement; lithium ion batteries
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The surface of commercial LiCoO2 was modified by molten salt method. The structure and electrochemical and thermal performances of the MgCl2-treated LiCoO2 were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), differential scanning calorimetry (I)SQ, X-ray photoelectron spectroscopy and galvanostatic cycling. It is found that surface modification improves the structural and thermal stability as well as the rate performance of LiCoO2. These improvements were attributed to the formation of homogeneous solid solution on the surface of the LiCO02 particle. (C) 2007 Elsevier B.V. All rights reserved.
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