Chemistry of inorganic compounds – Oxygen or compound thereof – Metal containing
Patent
1997-05-30
1999-07-27
Kalafut, Stephen
Chemistry of inorganic compounds
Oxygen or compound thereof
Metal containing
423599, 429224, H01M 450
Patent
active
059286229
ABSTRACT:
Technologies regarding camcorder, cellular phone and note book PC etc. have been developing rapidly according to the development of electronics, communication and computer industries. The secondary battery which can be used continuously by recharging has been required for the electric power of such instruments. Therefore, present invention relates to a high-capacity LiMn.sub.2 O.sub.4 compound used for non-aqueous electrolyte lithium ion battery, more particularly, to a method for preparing LiMn.sub.2 O.sub.4 intercalation compound doped with Li and Co ion, which comprises the following steps of : synthesis of spinel type LiMn.sub.2 O.sub.4 powder; dissolving and treating LiMn.sub.2 O.sub.4 powder in the solution to adsorb Li and Co ion; and thermal treatment of said LiMn.sub.2 O.sub.4 to obtain LiMn.sub.2 O.sub.4 doped with Li and Co ion.
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Electrochemical Characteristics of Spinel Phase LiMn.sub.2 O.sub.4 -Based Cathode Materials Prepared by the Pechini Process, W. Liu, K. Kowal and G.C. Farrington, J. Electrochem. Soc., vol. 143, No. 11., Nov. 1996, pp. 3590-3596.
Dissolution of Spinel Oxides and Capacity Losses in 4 V Li/Li.sub.X Mn.sub.2 O.sub.4 Cells, Dong H. Jang, Young J. Shin, and Seung M. Oh, J. Electrochem. Soc., vol. 143, No. 7, Jul. 1996, pp. 2204-2211.
The Spinel Phases LiM.sub.y Mn.sub.2-y O.sub.4 (M=Co, Cr, Ni) as the Cathode for Rechargeable Lithium Batteries, Li Guohua, H. Ikuta, T. Uchida, and M. Wakihara, J. Electrochem. Soc., vol. 143, No. 1, Jan. 1996, pp. 178-182.
Hwang Kang Seon
Kim Dong Hwan
Kim Seung Eui
Kalafut Stephen
Korea Kumho Petrochemical Co. Ltd.
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