Electrochemical and thermal characterization of AlF3-coated Li[Ni0.8Co0.15Al0.05]O2 cathode in lithium-ion cells

被引:112
作者
Kim, H. -B. [1 ]
Park, B. -C. [1 ]
Myung, S. -T. [2 ]
Amine, K. [3 ]
Prakash, Jai [4 ]
Sun, Y. -K. [1 ]
机构
[1] Hanyang Univ, Ctr Informat & Commun Mat, Dept Chem Engn, Seoul 133791, South Korea
[2] Iwate Univ, Dept Chem Engn, Morioka, Iwate 0208551, Japan
[3] Argonne Natl Lab, Div Chem Engn, Electrochem Technol Program, Argonne, IL 60439 USA
[4] IIT, Dept Environm Chem & Engn, Chicago, IL 60616 USA
关键词
Li[Ni0.8Co0.15Al0.05]O-2; aluminum fluoride; coating; cathode; lithium battery; capacity retention;
D O I
10.1016/j.jpowsour.2007.12.109
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Li[Ni0.8Co0.15Al0.05]O-2 particles are modified with A1F(3) as a new coating material. Even though the initial discharge capacity of the coated Li[Ni0.8Co0.15Al0.05]O-2 is almost the same as that of the pristine material, the capacity retention and the thermal stability, in a highly oxidized state are both significantly improved. This effect is attributed to the thin A1F(3) coating layer protecting the oxidized cathode particles from attack by hydrogen fluoride in the electrolyte. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码:347 / 350
页数:4
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