Synthesis and improved electrochemical performance of Al (OH)3-coated Li[Ni1/3Mn1/3Co1/3]O2 cathode materials at elevated temperature

被引：115
作者：
Jang, SB
Kang, SH
Amine, K
Bae, YC
Sun, YK [1 ]
机构：
[1] Hanyang Univ, Dept Chem Engn, Ctr Informat & Commun Mat, Seoul 133791, South Korea
[2] Argonne Natl Lab, Electrochem Technol Program, Div Chem Technol, Argonne, IL 60439 USA
来源：
ELECTROCHIMICA ACTA | 2005年 / 50卷 / 20期
关键词：
hydroxide; layered cathode materials; coating; rate capability; DSC;
D O I：
10.1016/j.electacta.2005.01.037
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Spherical Li[Ni1/3Co1/3Mn1/3]O-2 powders were synthesized from LiOH center dot H2O and coprecipitated spherical metal hydroxide, (Ni1/3Mn1/3Co1/3)(OH)(2) and coated with Al(OH)(3). The Al(OH)(3)-coated Li[Ni1/3Co1/3Mn1/3]O-2 showed a capacity retention of 80% at 320 mA g(-1) (2C-rate) based on 20 mA g(-1)(0.1 C-rate), while the pristine Li[Ni1/3Co1/3Mn1/3]O-2 delivered only 45% at the same current density. Also, unlike pristine Li[Ni1/3Co1/3Mn1/3]O-2, the Al(OH)(3)-coated Li[Ni1/3Co1/3Mn1/3]O-2 cathode exhibits excellent rate capability and good thermal stability. (c) 2005 Elsevier Ltd. All rights reserved.
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页码：4168 / 4173
页数：6
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