Significant improvement of electrochemical performance of AlF3-coated Li[Ni0.8Co0.1Mn0.1]O2 cathode materials

被引：202

作者：

Woo, S. -U. ^{[1
]}

Yoon, C. S.

Amine, K.

Belharouak, I.

Sun, Y. -K.

机构：

[1] Hanyang Univ, Dept Chem Engn, Seoul 133791, South Korea

[2] Hanyang Univ, Div Engn & Mat Sci, Ctr Informat & Commun Mat, Seoul 133791, South Korea

[3] Argonne Natl Lab, Electrochem Technol Program, Div Chem Engn, Argonne, IL 60439 USA

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2007年 / 154卷 / 11期

关键词：

THERMAL-STABILITY; CYCLING BEHAVIOR; LITHIUM; ELECTRODE; R(3)OVER-BAR-M; SUBSTITUTION; PARTICLES;

D O I：

10.1149/1.2776160

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The particle surface of Li[Ni0.8Co0.1Mn0.1]O-2 was modified with AlF3 as a coating material to improve the electrochemical properties. The effect of AlF3 coating on Li[Ni0.8Co0.1Mn0.1]O-2 cathode was extensively studied with respect to the structural and electrochemical properties, and thermal stability. The AlF3 coating on Li[Ni0.8Co0.1Mn0.1]O-2 particles improved the overall electrochemical properties, such as the cyclability, rate capability, and thermal stability, compared to pristine Li[Ni0.8Co0.1Mn0.1]O-2. Electrochemical impedance spectroscopy and transmission electron microscopy showed that the AlF3 coating on Li[Ni0.8Co0.1Mn0.1]O-2 particles played an important role in stabilizing the interface between the cathode and electrolyte.

引用

页码：A1005 / A1009

页数：5

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