公开(公告)号：US10193141B2

公开(公告)日：2019-01-29

申请号：US15121110

申请日：2015-02-24

Applicant: TODA KOGYO CORP. ,  DENKA COMPANY LIMITED

Inventor： Akihisa Kajiyama ,  Teruaki Santoki ,  Daisuke Morita ,  Ryuta Masaki ,  Takahiko Sugihara ,  Tsuyoshi Wakiyama ,  Kazutoshi Matsumoto ,  Akira Yoda ,  Taro Inada ,  Hiroshi Yokota ,  Takashi Kawasaki

IPC: H01M4/36 ,  H01M4/525 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/505 ,  H01M4/131 ,  H01M4/136 ,  H01M4/58 ,  H01M10/052 ,  H01M4/02

Abstract: An object of the present invention is to provide a positive electrode mixture capable of conducting stable charging and discharging with a less amount of gasses generated which has an operating voltage or an initial crystal phase transition voltage of not less than 4.5 V on the basis of lithium. The present invention relates to a positive electrode mixture comprising carbon black having a bulk density of not more than 0.1 g/cm3, a crystallite size of 10 to 40 Å, an iodine adsorption of 1 to 150 mg/g, a volatile content of not more than 0.1% and a metal impurity content of not more than 20 ppm, and a positive electrode active substance having an operating voltage or an initial crystal phase transition voltage of not less than 4.5 V on the basis of lithium.

公开(公告)号：US11492266B2

公开(公告)日：2022-11-08

申请号：US16663546

申请日：2019-10-25

Applicant: TODA KOGYO CORP.

Inventor： Akihisa Kajiyama ,  Ryuta Masaki ,  Tsuyoshi Wakiyama ,  Tetsuya Kashima ,  Shoichi Fujino ,  Osamu Sasaki ,  Kazutoshi Matsumoto

IPC: C01G51/00 ,  H01M4/525 ,  C01G53/00 ,  C01G45/12 ,  H01M4/505 ,  H01M4/04 ,  H01M10/0525 ,  H01M4/02

Abstract: Provided herein are processes for producing positive electrode active substance particles for non-aqueous electrolyte secondary batteries which is excellent in life characteristics of a battery with respect to a repeated charging and discharging performance thereof, as well as a non-aqueous electrolyte secondary battery. In particular, provided herein are processes for producing a positive electrode active substance for non-aqueous electrolyte secondary batteries comprising lithium transition metal layered oxide having a composition represented by the formula: Lia(NixCoyMn1-x-y)O2 wherein a is 1.0≤a≤1.15; x is 0

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：US09515315B2

公开(公告)日：2016-12-06

申请号：US14380523

申请日：2013-02-22

Applicant: TODA KOGYO CORP.

Inventor： Kazumichi Koga ,  Ryuta Masaki ,  Akihisa Kajiyama ,  Hiroaki Masukuni

IPC: H01M4/36 ,  H01M10/0525 ,  H01M4/50 ,  C01G25/00 ,  H01M4/505 ,  H01M4/485 ,  H01M8/04

CPC classification number: H01M4/364 ,  C01G25/00 ,  C01P2002/32 ,  C01P2002/72 ,  C01P2004/03 ,  C01P2004/62 ,  H01M4/485 ,  H01M4/502 ,  H01M4/505 ,  H01M8/04671 ,  H01M10/0525 ,  H01M2220/30 ,  Y02E60/122 ,  Y02P70/54

Abstract: The present invention relates to positive electrode active substance particles for non-aqueous electrolyte secondary batteries, comprising an oxide having a spinel structure and comprising at least Li and Mn as main components and an oxide comprising at least Li and Zr, in which the oxide comprising at least Li and Zr forms a mixed phase comprising two or more phases, and a content of the oxide comprising at least Li and Zr in the positive electrode active substance particles is 0.1 to 4% by weight. The present invention provides positive electrode active substance particles for non-aqueous electrolyte secondary batteries which are excellent in high-temperature characteristics and a process for producing the positive electrode active substance particles, and a non-aqueous electrolyte secondary battery.

Abstract translation: 本发明涉及非水电解质二次电池用正极活性物质粒子，其包含具有尖晶石结构且至少包含Li和Mn作为主要成分的氧化物和至少包含Li和Zr的氧化物，其中包含 至少Li和Zr形成包含两相或更多相的混合相，并且正极活性物质颗粒中至少包含Li和Zr的氧化物的含量为0.1至4重量％。 本发明提供高温特性优异的非水电解质二次电池用正极活性物质粒子和正极活性物质粒子的制造方法以及非水电解质二次电池。

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。

公开(公告)号：US20150037677A1

公开(公告)日：2015-02-05

申请号：US14380523

申请日：2013-02-22

Applicant: TODA KOGYO CORP.

Inventor： Kazumichi Koga ,  Ryuta Masaki ,  Akihisa Kajiyama ,  Hiroaki Masukuni

IPC: H01M4/36 ,  H01M10/0525 ,  H01M4/50

CPC classification number: H01M4/364 ,  C01G25/00 ,  C01P2002/32 ,  C01P2002/72 ,  C01P2004/03 ,  C01P2004/62 ,  H01M4/485 ,  H01M4/502 ,  H01M4/505 ,  H01M8/04671 ,  H01M10/0525 ,  H01M2220/30 ,  Y02E60/122 ,  Y02P70/54

Abstract: The present invention relates to positive electrode active substance particles for non-aqueous electrolyte secondary batteries, comprising an oxide having a spinel structure and comprising at least Li and Mn as main components and an oxide comprising at least Li and Zr, in which the oxide comprising at least Li and Zr forms a mixed phase comprising two or more phases, and a content of the oxide comprising at least Li and Zr in the positive electrode active substance particles is 0.1 to 4% by weight. The present invention provides positive electrode active substance particles for non-aqueous electrolyte secondary batteries which are excellent in high-temperature characteristics and a process for producing the positive electrode active substance particles, and a non-aqueous electrolyte secondary battery.

Abstract translation: 本发明涉及非水电解质二次电池用正极活性物质粒子，其包含具有尖晶石结构且至少包含Li和Mn作为主要成分的氧化物和至少包含Li和Zr的氧化物，其中包含 至少Li和Zr形成包含两相或更多相的混合相，并且正极活性物质颗粒中至少包含Li和Zr的氧化物的含量为0.1至4重量％。 本发明提供高温特性优异的非水电解质二次电池用正极活性物质粒子和正极活性物质粒子的制造方法以及非水电解质二次电池。