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Issue 2, 2003
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Electrochemical performance of layered Li[Li0.15Ni0.275−xMgxMn0.575]O2 cathode materials for lithium secondary batteries

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Abstract

The Li[Li0.15Ni0.275−xMgxMn0.575]O2 (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.

Graphical abstract: Electrochemical performance of layered Li[Li0.15Ni0.275−MgMn0.575]O2 cathode materials for lithium secondary batteries

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Article information


Submitted
24 Sep 2002
Accepted
21 Nov 2002
First published
23 Dec 2002

J. Mater. Chem., 2003,13, 319-322
Article type
Paper

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

Y.-K. Sun, M. G. Kim, S.-H. Kang and K. Amine, J. Mater. Chem., 2003, 13, 319
DOI: 10.1039/B209379K

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