Structural and electrochemical properties of nanosize layered Li[Li1/5Ni1/10Co1/5Mn1/2]O2

被引：45

作者：

Park, KS ^{[1
]}

Cho, MH ^{[1
]}

Jin, SJ ^{[1
]}

Nahm, KS ^{[1
]}

机构：

[1] Chonbuk Natl Univ, Sch Chem Engn & Technol, Chonju 561756, South Korea

来源：

ELECTROCHEMICAL AND SOLID STATE LETTERS | 2004年 / 7卷 / 08期

关键词：

D O I：

10.1149/1.1759292

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The Li[Li1/5Ni1/10Co1/5Mn1/2]O-2 cathode material was synthesized using a sol-gel method. The Li[Li1/5Ni1/10Co1/5Mn1/2]O-2 was formed with typical hexagonal structure. The discharge capacity of Li[Li1/5Ni1/10Co1/5Mn1/2]O-2 delivered 190 mAh/g at the first cycle. But the discharge capacity gradually increased with cycle number to be 231 mAh/g after 13th cycle and reached 229 mAh/g after 40 cycles with capacity fading ratio of 0.014 %/cycle. The oxidation states of Ni and Co were 21 and 31, respectively, while Mn was in the 4+ oxidation state in the Li[Li1/5Ni1/10Co1/5Mn1/2]O-2. But the oxidation state of Mn was reversibly changed between 4+ and 3+ after the first cycle. (C) 2004 The Electrochemical Society.

引用

页码：A239 / A241

页数：3

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