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Frontiers of Chemistry in China

ISSN 1673-3495

ISSN 1673-3614(Online)

CN 11-5726/O6

Front. Chem. China    2008, Vol. 3 Issue (1) : 64-69    https://doi.org/10.1007/s11458-008-0020-5
Effect of TiO-coating on structure and electrochemical performance of LiCoNiMnO
ZHANG Xinxiang, YANG Xiao, HUANG Youyuan, ZHOU Henghui, CHEN Jitao
College of Chemistry and Molecular Engineer, Peking University;
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Abstract LiCo0.2Ni0.4Mn0.4O2, as the cathode material for lithium ion batteries, was modified by TiO2-coating. The effect of TiO2-coating on the structure and electrochemical performance of LiCo0.2Ni0.4Mn0.4O2 was characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and galvanostatic charge-discharge tests. The results suggest that a small amount of TiO2-coating does not change the crystalline structure, but considerably improves the electrochemical performance of LiCo0.2Ni0.4Mn0.4O2 in terms of capacity delivery and cyclability. XPS measurements confirm that the improved electrochemical performance is most possibly attributed to a decrease in interaction between the layered material and non-aqueous electrolyte during the charge-discharge processes.
Issue Date: 05 March 2008
 Cite this article:   
YANG Xiao,ZHANG Xinxiang,HUANG Youyuan, et al. Effect of TiO-coating on structure and electrochemical performance of LiCoNiMnO[J]. Front. Chem. China, 2008, 3(1): 64-69.
 URL:  
https://academic.hep.com.cn/fcc/EN/10.1007/s11458-008-0020-5
https://academic.hep.com.cn/fcc/EN/Y2008/V3/I1/64
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