Title:
PRODUCTION OF LITHIUM-CONTAINING COMPOSITE OXIDE FOR LITHIUM SECONDARY BATTERY POSITIVE ELECTRODE ACTIVE MATERIAL
Document Type and Number:
Japanese Patent JP3806262
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To increase uniformity of a crystal phase by setting moisture content of Li compound to a specific amount when mixing Co compound with Li compound.
SOLUTION: Composite oxide is represented by a general formula LixMyCO1-yO2. In the formula, x: 0.9-1.1, y: 0-0.9, M: at least one or more elements of Ni, Mn, Fe, V, Cr, Al, Mg, Ti, Y, Ce, Nb, Zr, Si, and Ca. This composite oxide is produced by mixing Co compound with Li compound setting moisture content of Li compound to 0.15-5 wt.% and sintering them. As the Co compound, one or more of cobalt oxide, cobalt hydroxide, cobalt oxyhydroxide, and cobalt carbonate are preferable. As the Li compound, lithium carbonate or lithium hydroxide is used, and preferably, is added as micro powder with 1-10 μm weight-average grain size.
Inventors:
Junichi Yamashita
Application Number:
JP7448299A
Publication Date:
August 09, 2006
Filing Date:
March 18, 1999
Export Citation:
Assignee:
SEIMI CHEMICAL CO.,LTD.
International Classes:
C01G51/00; H01M4/505; H01M4/525; (IPC1-7): H01M4/58; C01G51/00; H01M4/02
Domestic Patent References:
| JP11139828A | ||||
| JP11079751A | ||||
| JP11343120A | ||||
| JP10081519A | ||||
| JP10072219A | ||||
| JP8255632A | ||||
| JP4056064A |
Attorney, Agent or Firm:
Patent Corporation MIP
Shinya Mayama
Shinya Mayama