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Progress of Research on the Li―rich Cathode Materials xLi2MnO3· (1―x) LiMO2 (M=Co, Fe, Ni1/2Mn1/2…) for Li―ion Batteries

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Author(s): ZHAO Yu-Juan, FENG Hai-Lan, ZHAO Chun-Song, SUN Zhao-Qin

Journal: Journal of Inorganic Materials
ISSN 1000-324X

Volume: 26;
Issue: 7;
Start page: 673;
Date: 2011;
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Keywords: Li-rich cathode materials; structure; synthesis methods; electrochemical performance; review

ABSTRACT
A new generation of Li―rich solid solution materials is cathode material xLi2MnO3·(1―x)LiMO2 (M= Co, Fe, Ni1/2Mn1/2…) because of its excellent electrochemical performance. The series of Li―rich cathode material exhibits high capacity and excellent cycleability, which may be associated with a new electrochemical charge―discharge mechanism, It is proposed to satisfy the high energy Li―ion batteries. The structure, synthesis methods and electrochemical properties of the Li―rich cathode materials were reviewed in this paper. The factors affecting the electrochemical properties of the cathode materials were discussed, and the recent research progress on improving the electrochemical performance of Li―rich cathode materials was summarized. In addition, the characteristics and the trend of different Li―rich cathode materials were described.
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