公开(公告)号：US20050152831A1

公开(公告)日：2005-07-14

申请号：US10510800

申请日：2003-01-15

申请人： Hiroshi Tasaki ,  Yoshio Kajiya

发明人： Hiroshi Tasaki ,  Yoshio Kajiya

IPC分类号： C01G45/00 ,  C01G45/12 ,  H01M4/02 ,  H01M4/36 ,  H01M4/485 ,  H01M4/505 ,  H01M4/58 ,  H01M10/05

CPC分类号： H01M4/505 ,  C01G45/1242 ,  C01P2004/03 ,  C01P2004/32 ,  C01P2006/11 ,  H01M10/052 ,  H01M2004/021

摘要： Means for stably supplying a lithium-containing complex oxide exhibiting a high performance as a cathode active material of a lithium secondary cell or the like and having a high tap density. Granular lithium-containing complex oxide such as lithium manganese complex oxide comprises “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. 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 shearing force and heating and firing them at a warming rate of not more than 50° C./h., thus producing the lithium-containing complex oxide.

摘要翻译： 用于稳定地供给表现出高性能的含锂复合氧化物作为锂二次电池等的正极活性物质并具有高振实密度的方法。 颗粒状含锂复合氧化物如锂锰复合氧化物包括“通过将烧结反应期间异常生长的富含锂的材料颗粒与基体颗粒的表面通过烧结而形成的复合氧化物颗粒”。 复合氧化物颗粒的数量不超过每克复合颗粒的50个。 金属氧化物如氧化锰和不超过5μm的平均晶粒尺寸的碳酸锂通过混合器混合，该混合器通过使用剪切力研磨和混合颗粒并加热，并以不高于50℃的升温速率进行烧制 ./h，从而制备含锂复合氧化物。