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Electrochemical study of Si doped LiNixMnyCo(1-x-y)O2 as cathode material for Li-ion secondary battery

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3 Author(s)
Seong-Hwan Na ; Battery Res. Group, Korea Electrotechnol. Res. Inst., Changwon, South Korea ; Hyun-Soo Kim ; Seong-In Moon

A new synthetic route of Li[NiMnCo]O2 was contrived and its electrochemical characteristics were enhanced by doping small amount of Si. The newly synthesized Li[NiMnCo]O2 showed the capacity of 175 mAh/g and good cycle life at as high cut-off voltage as 4.5V. Si-doped material showed improved rate capability, specific capacity, and cycle life. It seems that the increased lattice parameters and lowered electrochemical impedance are the main causes for the improvement.

Published in:

Industrial Electronics Society, 2004. IECON 2004. 30th Annual Conference of IEEE  (Volume:1 )

Date of Conference:

2-6 Nov. 2004