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Synthesis and Characterization of Lithiated Nickel Based Metal Oxides as Positive Electrode Materials for Lithium Ion Batteries

Published online by Cambridge University Press:  10 February 2011

S. Fujitani ,
H. Fujimoto ,
T. Nohma  and
K. Nishio
S. Fujitani
Affiliation:
New Materials Research Center, Sanyo Electric Co.,Ltd., 1-18-13, Hashiridani, Hirakata, Osaka, 573-8534, Japans_fujitani@rd.sanyo.co.jp
H. Fujimoto
Affiliation:
New Materials Research Center, Sanyo Electric Co.,Ltd., 1-18-13, Hashiridani, Hirakata, Osaka, 573-8534, Japans_fujitani@rd.sanyo.co.jp
T. Nohma
Affiliation:
New Materials Research Center, Sanyo Electric Co.,Ltd., 1-18-13, Hashiridani, Hirakata, Osaka, 573-8534, Japans_fujitani@rd.sanyo.co.jp
K. Nishio
Affiliation:
New Materials Research Center, Sanyo Electric Co.,Ltd., 1-18-13, Hashiridani, Hirakata, Osaka, 573-8534, Japans_fujitani@rd.sanyo.co.jp
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Abstract

LiNi1−xCoxO2(x=0.2, 0.3, 0.4) was synthesized through a sintering process from two different types of source materials of nickel and cobalt, namely each respective hydroxide and oxide, and composite hydroxide. Influence of the difference on charge-discharge characteristics, crystal structure and distribution of the metal elements was investigated.

The composite hydroxides formulated in Ni1−xCox(OH)2 as the source material brought better homogenized composite lithiated nickel based metal oxides exhibiting the larger specific discharge capacity. Further modification of LiNi0.6Co0.4)2 by manganese through sintering from the composite hydroxide including manganese brought a good charge-discharge cycle performance as well as a high discharge capacity of 160mAh/g level.

A cylindrical test cell of 18mm in diameter and 65mm in height using the LiNi0.6Co0.3Mn0.1O2 exhibited discharge capacity of 1700mAh which is larger than that using LiCoO2, and also exhibited a competitive charge-discharge cycle performance to commercialized lithium ion batteries.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 575: Symposium CC – New Materials for Batteries & Fuel Cells , 1999 , 21
Copyright
Copyright © Materials Research Society 2000

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References

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