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：US11742479B2

公开(公告)日：2023-08-29

申请号：US16509941

申请日：2019-07-12

Applicant: SUMITOMO METAL MINING CO., LTD.

Inventor： Taira Aida ,  Hiroyuki Toya

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

CPC classification number: H01M4/505 ,  C01G53/50 ,  H01M4/525 ,  H01M10/0525 ,  H01M2004/028

Abstract: Provided is a precursor of a positive electrode active material containing, in a reduced amount, impurities which do not contribute to a charge/discharge reaction but rather corrode a firing furnace and peripheral equipment and thus having excellent battery characteristics and safety, and production method thereof.
A method for producing a precursor of a positive electrode active material for nonaqueous electrolyte secondary batteries having a hollow structure or porous structure includes obtaining the precursor by washing nickel-manganese composite hydroxide particles having a particular composition ratio and a pore structure in which pores are present within the particles with an aqueous carbonate solution having a carbonate concentration of 0.1 mol/L or more.

公开(公告)号：US11735728B2

公开(公告)日：2023-08-22

申请号：US16764976

申请日：2018-11-21

Applicant: SUMITOMO METAL MINING CO., LTD.

Inventor： Toshiaki Aihara ,  Hiroyuki Toya

IPC: H01M4/525 ,  H01M4/04 ,  H01M4/36 ,  H01M4/505 ,  H01M4/52 ,  H01M10/0525 ,  H01M4/02

CPC classification number: H01M4/525 ,  H01M4/0471 ,  H01M4/366 ,  H01M4/505 ,  H01M4/523 ,  H01M10/0525 ,  H01M2004/028

Abstract: A cathode active material for a non-aqueous electrolyte secondary battery including primary particles of a lithium nickel complex oxide represented by a general formula: LizNi1−x−yCoxMyO2+α, and secondary particles in which the primary particles aggregate, wherein a plurality of coated lithium nickel complex oxide particles are formed by disposing a compound containing tungsten and lithium on surfaces of the secondary particles and surfaces of the primary particles positioned inside the secondary particles, and wherein a relative standard deviation of a ratio of a number of atoms of tungsten to a number of atoms of a metallic component other than lithium contained in the coated lithium nickel complex oxide particles is 0.4 or lower.

公开(公告)号：US10797302B2

公开(公告)日：2020-10-06

申请号：US15568567

申请日：2016-04-15

Applicant: SUMITOMO METAL MINING CO., LTD.

Inventor： Yuki Furuichi ,  Tetsufumi Komukai ,  Hiroyuki Toya

IPC: H01M4/00 ,  H01B1/08 ,  H01M4/131 ,  H01M4/505 ,  H01M4/525 ,  H01M4/62 ,  C01G53/00 ,  H01M4/36 ,  C01G53/04 ,  H01M10/0525

Abstract: Provided is a method for producing the positive electrode active material for nonaqueous electrolyte secondary batteries, including a first step of mixing a Li-metal composite oxide powder which is represented by the general formula: LizNi1-x-yCoxMyO2 (where 0≤x≤0.35, 0≤y≤0.35, and 0.97≤z≤1.30 are satisfied, and M is at least one element selected from Mn, V, Mg, Mo, Nb, Ti and Al) and constituted by primary particles and secondary particles, to an alkaline solution with a W compound dissolved therein, and immersing a resulting mixture, followed by solid-liquid separation, to obtain a W mixture with W uniformly dispersed on the surface of the primary particles of the composite oxide, and a second step of heat-treating the W mixture to thereby form a compound containing W and Li on the surface of the primary particles of the composite oxide powder.

公开(公告)号：US10236504B2

公开(公告)日：2019-03-19

申请号：US14898521

申请日：2014-06-13

Applicant: SUMITOMO METAL MINING CO., LTD.

Inventor： Yasutaka Kamata ,  Hiroyuki Toya

IPC: H01M4/505 ,  C01G53/00 ,  H01M10/00 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/05 ,  H01M4/02

Abstract: Achieved is a nickel-cobalt-manganese composite hydroxide which is excellent in reactivity with a lithium compound, and able to achieve a positive electrode active material which has excellent thermal stability and battery characteristics. The nickel-cobalt-manganese composite hydroxide is intended to serve as a precursor for a positive electrode active material of a non-aqueous electrolyte secondary battery, and represented by a general formula: Ni1-x-y-zCoxMnyMz(OH)2 (0

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：US09406930B2

公开(公告)日：2016-08-02

申请号：US14366871

申请日：2012-12-20

Applicant: SUMITOMO METAL MINING CO., LTD.

Inventor： Atsushi Fukui ,  Hiroyuki Toya

IPC: H01M4/00 ,  H01M4/36 ,  H01M4/505 ,  H01M4/525 ,  C01G53/00 ,  H01M4/04 ,  H01M4/1391 ,  H01M10/0525

CPC classification number: H01M4/364 ,  C01G53/006 ,  C01G53/42 ,  C01G53/44 ,  C01G53/50 ,  C01P2004/32 ,  C01P2004/45 ,  C01P2004/51 ,  C01P2004/61 ,  C01P2004/84 ,  C01P2006/12 ,  H01M4/0471 ,  H01M4/0497 ,  H01M4/1391 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  Y02E60/122 ,  Y02P70/54

Abstract: Provided is a lithium composite oxide having a uniform and suitable particle size and high specific surface area due to a hollow structure that can be produced on an industrial scale. A nickel composite hydroxide as a raw material thereof is obtained controlling the particle size distribution of the nickel composite hydroxide, the nickel composite hydroxide having a structure comprising a center section that comprises minute primary particles, and an outer-shell section that exists on the outside of the center section and comprises plate shaped primary particles that are larger than the primary particles of the center section, by a nucleation process and a particle growth process that are separated by controlling the pH during crystallization, and by controlling the reaction atmosphere in each process and the manganese content in a metal compound that is supplied in each process.

Abstract translation: 本发明提供一种锂复合氧化物，其具有均匀且适当的粒径和比表面积，由于可以工业规模生产的中空结构。 获得镍复合氢氧化物作为其原料，其控制镍复合氢氧化物的粒度分布，镍复合氢氧化物具有包括微小初级颗粒的中心部分的结构和存在于外部的外壳部分 的中心部分，并且通过成核过程和通过控制结晶期间的pH分离的成核过程和颗粒生长过程，并且通过控制每个过程中的反应气氛，包括大于中心部分的初级颗粒的板状初级颗粒 以及在各工序中供给的金属化合物中的锰含量。

公开(公告)号：US09318739B2

公开(公告)日：2016-04-19

申请号：US13925971

申请日：2013-06-25

Applicant: SUMITOMO METAL MINING CO., LTD.

Inventor： Hiroyuki Toya ,  Kazuomi Ryoshi ,  Toshiyuki Osako

IPC: H01M4/88 ,  H01M4/485 ,  C01G53/00 ,  H01M10/052 ,  H01M4/131 ,  H01M4/36 ,  H01M4/48 ,  H01M4/1391 ,  H01M10/04 ,  H01M4/02

CPC classification number: H01M4/131 ,  C01G53/00 ,  C01G53/006 ,  C01G53/50 ,  C01P2002/52 ,  C01P2004/03 ,  C01P2004/32 ,  C01P2004/50 ,  C01P2004/51 ,  C01P2004/61 ,  C01P2004/88 ,  H01M4/1391 ,  H01M4/362 ,  H01M4/483 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0427 ,  H01M10/052 ,  H01M2004/028 ,  Y02E60/122 ,  Y02P70/54

Abstract: To obtain a non-aqueous electrolyte secondary battery having high capacity, high output and good cyclability, nickel manganese composite hydroxide particles are a precursor for a cathode active material having lithium nickel manganese composite oxide with a hollow structure and a small and uniform particle size.An aqueous solution for nucleation includes a metallic compounds that contains nickel and a metallic compound that contains manganese, but does not include a complex ion formation agent that forms complex ions with nickel, manganese and cobalt. After nucleation is performed, an aqueous solution for particle growth is controlled so that the temperature of the solution is 60° C. or greater, and so that the pH value that is measured at a standard solution temperature of 25° C. is 9.5 to 11.5, and is less than the pH value in the nucleation step.

Abstract translation: 为了获得具有高容量，高产出和良好循环性能的非水电解质二次电池，镍锰复合氢氧化物颗粒是具有中空结构和小而均匀粒径的具有锂镍锰复合氧化物的阴极活性材料的前体。 用于成核的水溶液包括含有镍的金属化合物和含有锰的金属化合物，但不包括与镍，锰和钴形成复合离子的复合离子形成剂。 在成核后，控制用于颗粒生长的水溶液使溶液的温度为60℃或更高，并且使得在25℃的标准溶液温度下测量的pH值为9.5至 11.5，并且小于成核步骤中的pH值。

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.