发明授权
- 专利标题: Lithium-containing complex oxide and method of producing same
- 专利标题(中): 含锂复合氧化物及其制造方法
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申请号: US10510800申请日: 2003-01-15
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公开(公告)号: US07288242B2公开(公告)日: 2007-10-30
- 发明人: Hiroshi Tasaki , Yoshio Kajiya
- 申请人: Hiroshi Tasaki , Yoshio Kajiya
- 申请人地址: JP Tokyo
- 专利权人: Nikko Materials Co., Ltd.
- 当前专利权人: Nikko Materials Co., Ltd.
- 当前专利权人地址: JP Tokyo
- 代理机构: Flynn, thiel, Boutell & Tanis, P.C.
- 优先权: JP2002-108801 20020411
- 国际申请: PCT/JP03/00249 WO 20030115
- 国际公布: WO03/084873 WO 20031016
- 主分类号: C01D15/00
- IPC分类号: C01D15/00 ; C01D15/02
摘要:
A lithium-containing complex oxide exhibits a high performance as a cathode active material of a lithium secondary cell or the like and having a high tap density. A granular lithium-containing complex oxide, such as lithium manganese complex oxide, is made up of “complex oxide grains produced by integrating lithium-rich material grains abnormally grown during a firing reaction with the surfaces of the base grains by sintering.” The number of complex oxide grains is not more than 50 per gram of the complex grains. A metal oxide such as manganese oxide and lithium carbonate not more than 5 μm in average grain size are mixed by means of a mixer which grinds and mixes particles by using a shearing force and heated and fired at a warming rate of not more than 50° C./h., thus producing the lithium-containing complex oxide.