Electrochemical performance of layered Li[Li0.15Ni0.275-xMgxMn0.575]O2 cathode materials for lithium secondary batteries

被引：64

作者：

Sun, YK ^{[1
]}

Kim, MG

Kang, SH

Amine, K

机构：

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

[2] Pohang Univ Sci & Technol, Pohang Accelerator Lab, Beamline Res Div, Pohang 790784, South Korea

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

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2003年 / 13卷 / 02期

关键词：

D O I：

10.1039/b209379k

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：

The Li[Li0.15Ni0.275-xMgxMn0.575]O-2 (x=0, 0.02, and 0.04) powders have been synthesized using a sol-gel method. The layered structure of the materials is stabilized by a small amount of Mg substitution for Ni. The structural stability and cycling behavior are improved by an increase in the Mg content. The XAS measurements show that charge compensation by delithiation could be achieved by the oxidation of the oxygen ion as well as by the oxidation of Ni2+ to Ni3+, while maintaining the Mn atoms in the 4 oxidation state.

引用

页码：319 / 322

页数：4

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