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

被引：113

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.

引用

页码：4168 / 4173

页数：6

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