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Synthesis and Electrochemical Properties of a LiNi0.7Co0.3O1.9Cl0.1 Cathode Material for Lithium-Ion Battery

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Abstract:

Partial oxygen in LiNi0.7Co0.3O2 was replaced by chlorine to form LiNi0.7Co0.3O1.9Cl0.1. Phase structure of LiNi0.7Co0.3O1.9Cl0.1 was identified as a pure hexagonal lattice of α-NaFeO2 type by X-ray diffraction. Discharge capacity of LiNi0.7Co0.3O1.9Cl0.1 was 202 mAh/g in initial cycle at 15 mA/g current density in 2.5- 4.3 V potential window. The constant current charge/discharge experiments and cyclic voltammograms showed that chlorine addition was effective to improve reversible capacity and cycle stability of LiNi0.7Co0.3O2.

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Periodical:

Key Engineering Materials (Volumes 336-338)

Pages:

463-465

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.336-338.463

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Online since:

April 2007

Authors:

Xin Lu Li, Fei Yu Kang, Yong Ping Zheng, Xiu Juan Shi, Wan Ci Shen

Keywords:

Cathode, Chlorine Addition, Lithium-Ion Battery

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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