公开(公告)号：US11056681B2

公开(公告)日：2021-07-06

申请号：US17007707

申请日：2020-08-31

Applicant: SUMITOMO METAL MINING CO., LTD.

Inventor： Yuki Furuichi ,  Tetsufumi Komukai ,  Hiroyuki Toya

IPC: H01B1/08 ,  H01M4/04 ,  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：US20180123118A1

公开(公告)日：2018-05-03

申请号：US15568567

申请日：2016-04-15

Applicant: SUMITOMO METAL MINING CO., LTD.

Inventor： Yuki Furuichi ,  Tetsufumi Komukai ,  Hiroyuki Toya

IPC: H01M4/131 ,  C01G53/04 ,  H01M10/0525 ,  H01M4/525 ,  H01M4/505

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：US09941515B2

公开(公告)日：2018-04-10

申请号：US14898924

申请日：2014-06-13

Applicant: SUMITOMO METAL MINING CO., LTD.

Inventor： Yasutaka Kamata ,  Hiroyuki Toya

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

CPC classification number: H01M4/525 ,  C01G53/006 ,  C01G53/50 ,  C01P2002/50 ,  C01P2002/52 ,  C01P2002/74 ,  C01P2004/03 ,  C01P2004/84 ,  C01P2006/12 ,  C01P2006/14 ,  C01P2006/40 ,  H01M4/505 ,  H01M10/0525 ,  H01M2004/028 ,  H01M2220/20

Abstract: Achieved is a nickel-cobalt-manganese composite hydroxide which is excellent in reactivity with a lithium compound, and excellent thermal stability and battery characteristics. The nickel-cobalt-manganese composite hydroxide is represented by a general formula: Ni1-x-y-zCoxMnyMz (OH)2 (0

公开(公告)号：US20230369580A1

公开(公告)日：2023-11-16

申请号：US18220905

申请日：2023-07-12

Applicant: SUMITOMO METAL MINING CO., LTD.

Inventor： Taira Aida ,  Hiroyuki Toya

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

CPC classification number: H01M4/505 ,  H01M4/525 ,  C01G53/50 ,  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：US10601036B2

公开(公告)日：2020-03-24

申请号：US15129159

申请日：2015-03-12

Applicant: SUMITOMO METAL MINING CO., LTD.

Inventor： Taira Aida ,  Hiroyuki Toya

IPC: H01M4/1391 ,  H01M4/505 ,  H01M4/525 ,  C01G53/00 ,  H01M10/0525 ,  H01M4/02

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：US20190341610A1

公开(公告)日：2019-11-07

申请号：US16509941

申请日：2019-07-12

Applicant: SUMITOMO METAL MINING CO., LTD.

Inventor： Taira Aida ,  Hiroyuki Toya

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

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：US10396356B2

公开(公告)日：2019-08-27

申请号：US15656567

申请日：2017-07-21

Applicant: SUMITOMO METAL MINING CO., LTD.

Inventor： Hiroyuki Toya ,  Kazuomi Ryoshi ,  Toshiyuki Osako

IPC: H01M4/131 ,  H01M4/485 ,  C01G53/00 ,  H01M10/052 ,  H01M4/36 ,  H01M4/48 ,  H01M4/505 ,  H01M4/525 ,  H01M4/1391 ,  H01M10/04 ,  H01M4/02

Abstract: Provided are nickel manganese composite hydroxide particles that are a precursor for forming cathode active material comprising lithium nickel manganese composite oxide having hollow structure of particles having a small and uniform particle size for obtaining a non-aqueous electrolyte secondary battery having high capacity, high output and good cyclability. When obtaining the nickel manganese composite hydroxide particles from a crystallization reaction, an aqueous solution for nucleation, which includes at least a metallic compound that contains nickel and a metallic compound that contains manganese, and does not include a complex ion formation agent that forms complex ions with nickel, manganese and cobalt, 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 11.5 to 13.5, and after nucleation is performed, an aqueous solution for particle growth, which includes the nuclei that were formed in the nucleation step and does not substantially include a complex ion formation agent that forms complex ions with nickel, manganese and cobalt, 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.

公开(公告)号：US20170110726A1

公开(公告)日：2017-04-20

申请号：US15129159

申请日：2015-03-12

Applicant: SUMITOMO METAL MINING CO., LTD.

Inventor： Taira Aida ,  Hiroyuki Toya

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

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：US20160248091A1

公开(公告)日：2016-08-25

申请号：US15144132

申请日：2016-05-02

Applicant: SUMITOMO METAL MINING CO., LTD.

Inventor： Hiroyuki Toya ,  Atsushi Fukui

IPC: H01M4/525 ,  H01M4/134 ,  H01M4/38 ,  H01M4/505 ,  H01M4/62 ,  C30B29/22 ,  H01M10/0585 ,  H01M10/0569 ,  H01M10/0568 ,  H01M2/02 ,  H01M2/16 ,  H01M4/131 ,  H01M10/0525

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.

Abstract translation: 可以使用过渡金属复合氢氧化物作为前体，以获得具有小而高度均匀粒径的锂过渡金属复合氧化物。 还提供了一种制备由通式（1）MxWsAt（OH）2 +α表示的过渡金属复合氢氧化物的方法，所述过渡金属复合氢氧化物涂覆有含有添加元素的化合物，并且用作非水性正极活性材料的前体 电解质二次电池。 该方法包括制备复合氢氧化物颗粒，形成核，生长形成的核; 并且在通过上游步骤获得的复合氢氧化物颗粒的表面上形成含有金属氧化物或氢氧化物的涂料。

公开(公告)号：US09391318B2

公开(公告)日：2016-07-12

申请号：US13941253

申请日：2013-07-12

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

Inventor： Hiroki Nagai ,  Masahiro Morita ,  Kensaku Mori ,  Shin Imaizumi ,  Kenji Ikeuchi ,  Toshiyuki Osako ,  Hiroyuki Toya

IPC: H01M10/0525 ,  H01M4/36 ,  H01M4/505 ,  H01M4/525 ,  C01G53/00 ,  H01M4/02 ,  H01M4/131

CPC classification number: H01M4/366 ,  C01G53/006 ,  C01G53/50 ,  C01P2002/52 ,  C01P2004/03 ,  C01P2004/61 ,  C01P2006/11 ,  C01P2006/12 ,  C01P2006/16 ,  H01M4/131 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M2004/021 ,  Y02E60/122 ,  Y02P70/54 ,  Y02T10/7011

Abstract: Active material particles are provided that exhibit performance suitable for increasing the output of a lithium secondary battery and little deterioration due to charge-discharge cycling. The active material particles provided by the present invention have a hollow structure having secondary particles including an aggregate of a plurality of primary particles of a lithium transition metal oxide, and a hollow portion formed inside the secondary particles, and through holes that penetrates to the hollow portion from the outside are formed in the secondary particles. BET specific surface area of the active material particles is 0.5 to 1.9 m2/g.

Abstract translation: 提供活性物质颗粒，其表现出适合于增加锂二次电池的输出并且由于充放电循环而导致的劣化。 由本发明提供的活性物质颗粒具有中空结构，其具有二次粒子，其具有多个锂过渡金属氧化物的一次粒子的聚集体和形成在二次粒子内部的中空部分，以及穿透到中空部的通孔 从二次颗粒形成从外部的部分。 活性物质粒子的BET比表面积为0.5〜1.9m 2 / g。