公开(公告)号：US11876222B2

公开(公告)日：2024-01-16

申请号：US17898027

申请日：2022-08-29

Applicant: SUMITOMO METAL MINING CO., LTD.

Inventor： Atsushi Fukui ,  Katsuya Inoue ,  Shuhei Oda ,  Hiroyuki Toya

IPC: H01M4/525 ,  C01G53/00 ,  H01M4/505 ,  H01M10/0525 ,  H01M4/02

CPC classification number: H01M4/525 ,  C01G53/006 ,  C01G53/50 ,  H01M4/505 ,  H01M10/0525 ,  C01P2002/52 ,  C01P2004/03 ,  C01P2004/32 ,  C01P2004/34 ,  C01P2004/51 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2006/11 ,  C01P2006/12 ,  C01P2006/40 ,  H01M2004/028

Abstract: Provided are a cathode active material having a suitable particle size and high uniformity, and a nickel composite hydroxide as a precursor of the cathode active material. When obtaining nickel composite hydroxide by a crystallization reaction, nucleation is performed by controlling a nucleation aqueous solution that includes a metal compound, which includes nickel, and an ammonium ion donor so that the pH value at a standard solution temperature of 25° C. becomes 12.0 to 14.0, after which, particles are grown by controlling a particle growth aqueous solution that includes the formed nuclei so that the pH value at a standard solution temperature of 25° C. becomes 10.5 to 12.0, and so that the pH value is lower than the pH value during nucleation. The crystallization reaction is performed in a non-oxidizing atmosphere at least in a range after the processing time exceeds at least 40% of the total time of the particle growth process from the start of the particle growth process where the oxygen concentration is 1 volume % or less, and with controlling an agitation power requirement per unit volume into a range of 0.5 kW/m3 to 4 kW/m3 at least during the nucleation process.

公开(公告)号：US10256505B2

公开(公告)日：2019-04-09

申请号：US15313194

申请日：2015-05-26

Applicant: SUMITOMO METAL MINING CO., LTD.

Inventor： Katsuya Inoue ,  Tetsufumi Komukai

IPC: H01M10/0562 ,  H01M10/056 ,  H01M4/505 ,  H01M4/525 ,  C01G53/00 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/36 ,  H01M4/485 ,  H01M4/62

Abstract: Provided is a positive electrode active material that can be used to fabricate a nonaqueous electrolyte secondary battery having excellent output characteristics not only in an environment at normal temperature but also in all temperature environments from extremely low to high temperatures.A positive electrode active material for nonaqueous electrolyte secondary batteries, the positive electrode active material includes a boron compound and lithium-nickel-cobalt-manganese composite oxide of general formula (1) having a layered hexagonal crystal structure. The lithium-nickel-cobalt-manganese composite oxide includes secondary particles composed of agglomerated primary particles. The boron compound is present on at least part of the surface of the primary particles, and contains lithium. Li1+sNixCoyMnzMotMwO2  (1)

公开(公告)号：US09786913B2

公开(公告)日：2017-10-10

申请号：US14907005

申请日：2014-07-22

Applicant: SUMITOMO METAL MINING CO., LTD.

Inventor： Katsuya Inoue ,  Hiroyuki Toya

IPC: H01M2/00 ,  H01M4/525 ,  C01G53/00 ,  H01M4/505 ,  H01M4/36 ,  H01M4/02

CPC classification number: H01M4/525 ,  C01G53/00 ,  C01G53/006 ,  C01G53/50 ,  C01P2002/50 ,  C01P2002/60 ,  C01P2002/74 ,  C01P2004/50 ,  C01P2004/61 ,  C01P2006/12 ,  C01P2006/40 ,  H01M4/366 ,  H01M4/505 ,  H01M2004/028

Abstract: To provide a cathode active material for a non-aqueous electrode rechargeable battery, with which it is possible to improve input/output characteristics, particularly by reducing resistance in a low SOC state in which DCIR increases, and to provide a manufacturing method for same. The cathode active material includes layered hexagonal crystal lithium nickel manganese composite oxide particles represented by the general formula (A): Li1+uNixMnyCozMtO2 (where 0≦u≦0.20, x+y+z+t=1, 0.30≦x ≦0.70, 0.10≦y≦0.55, 0≦z≦0.40, 0≦t≦0.10, and M is one or more elements selected from Al, Ti, V, Cr, Zr, Nb, Mo, and W), and further including Na, Mg, Ca and SO4, in which the total amount of Na, Mg and Ca is 0.01 to 0.1 mass %, the amount of SO4 is 0.1 to 1.0 mass %, and the ratio of the integrated intensity of the diffraction peak on plane (003) to that on plane (104) obtained by powder X-ray diffraction measurement using CuKα rays is 1.20 or greater.

公开(公告)号：US20170187065A1

公开(公告)日：2017-06-29

申请号：US15313194

申请日：2015-05-26

Applicant: SUMITOMO METAL MINING CO., LTD.

Inventor： Katsuya Inoue ,  Tetsufumi Komukai

IPC: H01M10/0562 ,  H01M10/056

CPC classification number: H01M10/0562 ,  C01G53/006 ,  C01G53/50 ,  C01P2004/03 ,  C01P2004/34 ,  C01P2004/45 ,  C01P2004/51 ,  C01P2004/61 ,  C01P2004/84 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/366 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/62 ,  H01M10/056

Abstract: Provided is a positive electrode active material that can be used to fabricate a nonaqueous electrolyte secondary battery having excellent output characteristics not only in an environment at normal temperature but also in all temperature environments from extremely low to high temperatures.A positive electrode active material for nonaqueous electrolyte secondary batteries, the positive electrode active material includes a boron compound and lithium-nickel-cobalt-manganese composite oxide of general formula (1) having a layered hexagonal crystal structure. The lithium-nickel-cobalt-manganese composite oxide includes secondary particles composed of agglomerated primary particles. The boron compound is present on at least part of the surface of the primary particles, and contains lithium. Li1+sNixCoyMnzMotMwO2   (1)

公开(公告)号：US12288876B2

公开(公告)日：2025-04-29

申请号：US18524333

申请日：2023-11-30

Applicant: SUMITOMO METAL MINING CO., LTD.

Inventor： Atsushi Fukui ,  Katsuya Inoue ,  Shuhei Oda ,  Hiroyuki Toya

IPC: H01M4/525 ,  C01G53/50 ,  C01G53/82 ,  H01M4/02 ,  H01M4/505 ,  H01M10/0525

Abstract: Provided are a cathode active material having a suitable particle size and high uniformity, and a nickel composite hydroxide as a precursor of the cathode active material. When obtaining nickel composite hydroxide by a crystallization reaction, nucleation is performed by controlling a nucleation aqueous solution that includes a metal compound, which includes nickel, and an ammonium ion donor so that the pH value at a standard solution temperature of 25° C. becomes 12.0 to 14.0, after which, particles are grown by controlling a particle growth aqueous solution that includes the formed nuclei so that the pH value at a standard solution temperature of 25° C. becomes 10.5 to 12.0, and so that the pH value is lower than the pH value during nucleation. The crystallization reaction is performed in a non-oxidizing atmosphere at least in a range after the processing time exceeds at least 40% of the total time of the particle growth process from the start of the particle growth process where the oxygen concentration is 1 volume % or less, and with controlling an agitation power requirement per unit volume into a range of 0.5 kW/m3 to 4 kW/m3 at least during the nucleation process.

公开(公告)号：US11038168B2

公开(公告)日：2021-06-15

申请号：US15892681

申请日：2018-02-09

Applicant: SUMITOMO METAL MINING CO., LTD.

Inventor： Atsushi Fukui ,  Katsuya Inoue ,  Shuhei Oda ,  Hiroyuki Toya

IPC: H01M4/525 ,  C01G53/00 ,  H01M4/505 ,  H01M10/0525 ,  H01M4/02

Abstract: Provided are a cathode active material having a suitable particle size and high uniformity, and a nickel composite hydroxide as a precursor of the cathode active material. When obtaining nickel composite hydroxide by a crystallization reaction, nucleation is performed by controlling a nucleation aqueous solution that includes a metal compound, which includes nickel, and an ammonium ion donor so that the pH value at a standard solution temperature of 25° C. becomes 12.0 to 14.0, after which, particles are grown by controlling a particle growth aqueous solution that includes the formed nuclei so that the pH value at a standard solution temperature of 25° C. becomes 10.5 to 12.0, and so that the pH value is lower than the pH value during nucleation. The crystallization reaction is performed in a non-oxidizing atmosphere at least in a range after the processing time exceeds at least 40% of the total time of the particle growth process from the start of the particle growth process where the oxygen concentration is 1 volume % or less, and with controlling an agitation power requirement per unit volume into a range of 0.5 kW/m3 to 4 kW/m3 at least during the nucleation process.

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。

公开(公告)号：US11545663B2

公开(公告)日：2023-01-03

申请号：US17318692

申请日：2021-05-12

Applicant: SUMITOMO METAL MINING CO., LTD.

Inventor： Atsushi Fukui ,  Katsuya Inoue ,  Shuhei Oda ,  Hiroyuki Toya

IPC: H01M4/525 ,  C01G53/00 ,  H01M4/505 ,  H01M10/0525 ,  H01M4/02

Abstract: Provided are a cathode active material having a suitable particle size and high uniformity, and a nickel composite hydroxide as a precursor of the cathode active material. When obtaining nickel composite hydroxide by a crystallization reaction, nucleation is performed by controlling a nucleation aqueous solution that includes a metal compound, which includes nickel, and an ammonium ion donor so that the pH value at a standard solution temperature of 25° C. becomes 12.0 to 14.0, after which, particles are grown by controlling a particle growth aqueous solution that includes the formed nuclei so that the pH value at a standard solution temperature of 25° C. becomes 10.5 to 12.0, and so that the pH value is lower than the pH value during nucleation. The crystallization reaction is performed in a non-oxidizing atmosphere at least in a range after the processing time exceeds at least 40% of the total time of the particle growth process from the start of the particle growth process where the oxygen concentration is 1 volume % or less, and with controlling an agitation power requirement per unit volume into a range of 0.5 kW/m3 to 4 kW/m3 at least during the nucleation process.

公开(公告)号：US10483539B2

公开(公告)日：2019-11-19

申请号：US15500135

申请日：2015-07-01

Applicant: SUMITOMO METAL MINING CO., LTD.

Inventor： Katsuya Inoue ,  Hiroyuki Toya

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

Abstract: A positive electrode active material for a non-aqueous electrolyte secondary battery, which enables a non-aqueous electrolyte secondary battery to achieve great battery characteristics, and a process for producing the material, as well as a non-aqueous electrolyte secondary batter. Provided is a positive electrode active material for a non-aqueous electrolyte secondary battery, where secondary particles of lithium-nickel-cobalt-manganese composite oxide particles are composed of outer-shell parts with a high manganese concentration and central parts with a low manganese concentration, which are lower in manganese concentration than the outer-shell parts, primary particles constituting the outer-shell parts of the secondary particles with the high manganese concentration are composed of outer peripheral parts with a low manganese concentration and inner parts with a high manganese concentration, and the ratio of the manganese concentration in the inner part to the manganese concentration in the outer peripheral part is 1.5 to 2.5 in the primary particles.