公开(公告)号：US20190157667A1

公开(公告)日：2019-05-23

申请号：US16223248

申请日：2018-12-18

Applicant: TODA KOGYO CORP.

Inventor： Minoru Yamazaki ,  Osamu Sasaki ,  Shoichi Fujino ,  Hideharu Mitsui ,  Takayuki Yamamura ,  Kunihiro Uramatsu ,  Akihisa Kajiyama ,  Ryuta Masaki

IPC: H01M4/36 ,  H01M4/505 ,  H01M4/485 ,  H01M10/0525 ,  H01M4/525

Abstract: The present invention relates to lithium composite oxide particles which can be produced by mixing nickel-cobalt-manganese-based compound particles, a zirconium raw material and a lithium raw material with each other and then calcining the resulting mixture, and comprise a Zr compound that is allowed to be present on a surface thereof, in which the Zr compound is represented by the chemical formula: Lix(Zr1-yAy)Oz wherein x, y and z are 2.0≤x≤8.0; 0≤y≤1.0; and 2.0≤z≤6.0, respectively, and a content of Zr in the lithium composite oxide particles is 0.05 to 1.0% by weight. By using the lithium composite oxide particles as a positive electrode active substance, it is possible to produce a lithium ion secondary battery that has a low electric resistance at a high temperature, and is excellent in cycle characteristic at a high temperature as well as high-temperature rate characteristic.

公开(公告)号：US20150024273A1

公开(公告)日：2015-01-22

申请号：US14384784

申请日：2013-03-14

Applicant: TODA KOGYO CORP.

Inventor： Minoru Yamazaki ,  Osamu Sasaki ,  Shoichi Fujino ,  Hideharu Mitsui ,  Takayuki Yamamura ,  Kunihiro Uramatsu ,  Akihisa Kajiyama ,  Ryuta Masaki

IPC: H01M4/36 ,  H01M4/1391 ,  H01M10/0525 ,  H01M4/04

CPC classification number: H01M4/366 ,  C01G53/50 ,  C01P2002/52 ,  C01P2004/03 ,  C01P2004/51 ,  C01P2004/61 ,  C01P2004/80 ,  C01P2006/12 ,  C01P2006/40 ,  H01M4/0416 ,  H01M4/0471 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M2004/028 ,  H01M2220/30

Abstract: The present invention relates to lithium composite oxide particles which can be produced by mixing nickel-cobalt-manganese-based compound particles, a zirconium raw material and a lithium raw material with each other and then calcining the resulting mixture, and comprise a Zr compound that is allowed to be present on a surface thereof, in which the Zr compound is represented by the chemical formula: Lix(Zr1-yAy)Oz wherein x, y and z are 2.0≦x≦8.0; 0≦y≦1.0; and 2.0≦z≦6.0, respectively, and a content of Zr in the lithium composite oxide particles is 0.05 to 1.0% by weight. By using the lithium composite oxide particles as a positive electrode active substance, it is possible to produce a lithium ion secondary battery that has a low electric resistance at a high temperature, and is excellent in cycle characteristic at a high temperature as well as high-temperature rate characteristic.

Abstract translation: 本发明涉及通过将镍钴锰系化合物颗粒，锆原料和锂原料彼此混合，然后煅烧所得混合物而制备的锂复合氧化物颗粒，并且包含Zr化合物 允许存在于其表面，其中Zr化合物由以下化学式表示：Lix（Zr1-yAy）Oz其中x，y和z分别为2.0和nlE; x＆lt; lE; 8.0; 0＆nlE; y＆nlE; 1.0; 和2.0＆nlE; z＆nlE; 6.0，并且锂复合氧化物颗粒中的Zr含量为0.05-1.0重量％。 通过使用锂复合氧化物粒子作为正极活性物质，可以制造在高温下具有低电阻的锂离子二次电池，并且在高温下具有优异的循环特性， 温度特性。