公开(公告)号：US10516165B2

公开(公告)日：2019-12-24

申请号：US15918956

申请日：2018-03-12

Applicant: SUMITOMO METAL MINING CO., LTD. ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hiroyuki Toya ,  Shin Imaizumi ,  Kensaku Mori ,  Atsushi Fukui ,  Kenji Ikeuchi ,  Kazuomi Ryoshi ,  Toshiyuki Osako ,  Hiroki Nagai

IPC: H01M4/505 ,  C01G53/00 ,  H01M4/131 ,  H01M4/525 ,  H01M10/052

Abstract: An object of the present invention is to provide nickel cobalt manganese composite hydroxide particles having a small particle diameter and a uniform particle size distribution, and a method for producing the same. A method for producing a nickel cobalt manganese composite hydroxide by a crystallization reaction is provided. The method includes: a nucleation step of performing nucleation by controlling a pH of an aqueous solution for nucleation including metal compounds containing nickel, cobalt and manganese, and an ammonium ion donor to 12.0 to 14.0 in terms of the pH as measured at a liquid temperature of 25° C. as a standard; and a particle growth step of growing nuclei by controlling a pH of an aqueous solution for particle growth containing nuclei formed in the nucleation step to 10.5 to 12.0 in terms of the pH as measured at a liquid temperature of 25° C. as a standard.

公开(公告)号：US10424787B2

公开(公告)日：2019-09-24

申请号：US14890349

申请日：2014-05-12

Applicant: SUMITOMO METAL MINING CO., LTD.

Inventor： Yasutaka Kamata ,  Taira Aida ,  Hiroyuki Toya

IPC: H01M4/525 ,  H01M4/485 ,  H01M4/505 ,  C01G53/00 ,  C01G53/04 ,  C30B1/04 ,  C30B1/10 ,  C30B7/14 ,  C30B29/10 ,  C30B29/22 ,  H01M10/052 ,  H01M4/02

Abstract: Provided is a cathode active material that can simultaneously improve the capacity characteristics, output characteristics, and cycling characteristics of a rechargeable battery when used as cathode material for a non-aqueous electrolyte rechargeable battery. After performing nucleation by controlling an aqueous solution for nucleation that includes a metal compound that includes at least a transition metal and an ammonium ion donor so that the pH value becomes 12.0 to 14.0 (nucleation process), nuclei are caused to grow by controlling aqueous solution for particle growth that includes the nuclei so that the pH value is less than in the nucleation process and is 10.5 to 12.0 (particle growth process). When doing this, the reaction atmosphere in the nucleation process and at the beginning of the particle growth process is a non-oxidizing atmosphere, and in the particle growth process, atmosphere control by which the reaction atmosphere is switched from this non-oxidizing atmosphere to an oxidizing atmosphere, and is then switched again to a non-oxidizing atmosphere is performed at least one time. Cathode active material is obtained with the composite hydroxide particles that are obtained by this kind of crystallization reaction as a precursor.

公开(公告)号：US10038190B2

公开(公告)日：2018-07-31

申请号：US15144132

申请日：2016-05-02

Applicant: SUMITOMO METAL MINING CO., LTD.

Inventor： Hiroyuki Toya ,  Atsushi Fukui

IPC: H01M4/525 ,  C01G53/00 ,  C01G45/00 ,  C01G51/00 ,  H01M4/505 ,  C01D15/02 ,  H01M4/485 ,  C30B29/22 ,  H01M2/02 ,  H01M2/16 ,  H01M4/131 ,  H01M4/134 ,  H01M4/38 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/0585 ,  H01M4/04 ,  H01M4/1391 ,  H01M4/02

CPC classification number: H01M4/525 ,  C01D15/02 ,  C01G45/006 ,  C01G51/006 ,  C01G53/006 ,  C01G53/42 ,  C01G53/50 ,  C01P2002/52 ,  C01P2004/01 ,  C01P2004/51 ,  C01P2004/61 ,  C01P2004/84 ,  C01P2006/12 ,  C01P2006/40 ,  C30B29/22 ,  H01M2/0222 ,  H01M2/1653 ,  H01M4/043 ,  H01M4/0471 ,  H01M4/131 ,  H01M4/134 ,  H01M4/1391 ,  H01M4/382 ,  H01M4/485 ,  H01M4/505 ,  H01M4/623 ,  H01M4/625 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/0585 ,  H01M2004/021 ,  H01M2004/027 ,  H01M2004/028 ,  H01M2220/20 ,  H01M2220/30 ,  Y02P70/54

Abstract: A transition metal composite hydroxide can be used as a precursor to allow a lithium transition metal composite oxide having a small and highly uniform particle diameter to be obtained. A method also is provided for producing a transition metal composite hydroxide represented by a general formula (1) MxWsAt(OH)2+α, coated with a compound containing the additive element, and serving as a precursor of a positive electrode active material for nonaqueous electrolyte secondary batteries. The method includes producing a composite hydroxide particle, forming nuclei, growing a formed nucleus; and forming a coating material containing a metal oxide or hydroxide on the surfaces of composite hydroxide particles obtained through the upstream step.

公开(公告)号：US20170050864A1

公开(公告)日：2017-02-23

申请号：US15342480

申请日：2016-11-03

Applicant: SUMITOMO METAL MINING CO., LTD.

Inventor： Satoshi Matsumoto ,  Shuhei Oda ,  Katsuya Inoue ,  Hiroyuki Toya

IPC: C01G53/00 ,  H01M10/0525 ,  H01M4/525 ,  H01M4/36 ,  H01M4/505

CPC classification number: C01G53/50 ,  C01G45/1228 ,  C01G45/125 ,  C01G51/50 ,  C01G53/00 ,  C01G53/006 ,  C01P2002/52 ,  C01P2004/03 ,  C01P2004/51 ,  C01P2004/61 ,  C01P2004/84 ,  H01M4/366 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/028

Abstract: Provided are a positive electrode active material for nonaqueous secondary batteries, the material having a narrow particle-size distribution and a monodisperse property and being capable of increasing a battery capacity; an industrial production method thereof; and a nonaqueous secondary battery using the positive electrode active material and having excellent electrical characteristics. The positive electrode active material is represented by a general formula: Li1+uNixCoyMnzMtO2+α (wherein, 0.05≦u≦0.95, x+y+z+t=1, 0≦x≦0.5, 0≦y≦0.5, 0.5≦z

Abstract translation: 本发明提供一种非水系二次电池用正极活性物质，其粒径分布窄，单分散性好，能够提高电池容量; 其工业生产方法; 以及使用正极活性物质并具有优异的电特性的非水二次电池。 正极活性物质由以下通式表示：Li1 + uNixCoyMnzMtO2 +α（其中，0.05≤u≤0.95，x + y + z + t =1,0.0≤x≤0.5,0≤y≤0.5,0.5≤ z <0.8,0≤t≤0.1，M为添加元素，选自Mg，Ca，Al，Ti，V，Cr，Zr，Nb，Mo和W中的至少一种元素）的平均粒径 为3〜12μm，具有[（d90-d10）/平均粒径]，表示粒径分布规格的指数为0.60以下。