发明授权
- 专利标题: Lithium-manganese composite oxides for lithium ion battery and process for preparing same
- 专利标题(中): 锂离子电池用锂锰复合氧化物及其制备方法
-
申请号: US12310172申请日: 2008-04-14
-
公开(公告)号: US08114309B2公开(公告)日: 2012-02-14
- 发明人: Yoshio Kajiya , Hirohito Sato , Ryuichi Nagase
- 申请人: Yoshio Kajiya , Hirohito Sato , Ryuichi Nagase
- 申请人地址: JP Tokyo
- 专利权人: JX Nippon Mining & Metals Corporation
- 当前专利权人: JX Nippon Mining & Metals Corporation
- 当前专利权人地址: JP Tokyo
- 代理机构: Drinker Biddle & Reath LLP
- 优先权: JP2007-188340 20070719
- 国际申请: PCT/JP2008/057298 WO 20080414
- 国际公布: WO2009/011157 WO 20090122
- 主分类号: H01M4/50
- IPC分类号: H01M4/50 ; C01G45/02
摘要:
A lithium-manganese composite oxide for a lithium ion battery having a good cycle property at high-temperature and battery property of high capacity is provided. A spinel type lithium-manganese composite oxide for a lithium ion battery represented by a general formula: Li1+xMn2-yMyO4 (wherein M is one or more elements selected from Al, Mg, Si, Ca, Ti, Cu, Ba, W and Pb, and, −0.1≦x≦0.2, and 0.06≦y≦0.3), and when D10, D50 and D90 are defined as a particle size at which point the cumulative frequency of volume reaches 10%, 50% and 90% respectively, d10 is not less than 2 μm and not more than 5 μM, d50 is not less than 6 μm and not more than 9 μm, and d90 is not less than 12 μm and not more than 15 μM, and BET specific surface area thereof is greater than 1.0 m2/g and not more than 2.0 m2/g, and the tap density thereof is not less than 0.5 g/cm3 and less than 1.0 g/cm3.