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公开(公告)号：US20190260024A1
公开(公告)日：2019-08-22
申请号：US16320748
申请日：2017-06-06
Applicant: SUMITOMO METAL MINING CO., LTD.
Inventor： Takuma Nakamura , Haruki Kaneda , Takehide Honma , Takaaki Ando , Koji Yamaji
IPC: H01M4/525 , C01G53/00 , C01G53/04 , H01M4/505 , H01M10/0525
Abstract: Provided are a nickel-manganese composite hydroxide capable of producing a secondary battery having a high particle fillability and excellent battery characteristics when used as a precursor of a positive electrode active material and a method for producing the same. A nickel-manganese composite hydroxide is represented by General Formula: NixMnyMz(OH)2+α and contains a secondary particle formed of a plurality of flocculated primary particles. The primary particles have an aspect ratio of at least 3, and at least some of the primary particles are disposed radially from a central part of the secondary particle toward an outer circumference thereof. The secondary particle has a ratio I(101)/I(001) of a diffraction peak intensity I(101) of a 101 plane to a peak intensity I(001) of a 001 plane, measured by an X-ray diffraction measurement, of up to 0.15.
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公开(公告)号：US11742483B2
公开(公告)日：2023-08-29
申请号：US17865714
申请日：2022-07-15
Applicant: SUMITOMO METAL MINING CO., LTD.
Inventor： Takuma Nakamura , Haruki Kaneda , Takehide Honma , Takaaki Ando , Koji Yamaji
CPC classification number: H01M4/525 , C01G53/00 , C01G53/006 , C01G53/04 , C01G53/50 , H01M4/505 , H01M10/0525 , C01P2002/74 , C01P2004/03 , C01P2004/50 , C01P2004/51 , C01P2004/54 , C01P2004/61 , C01P2004/64 , C01P2006/11 , C01P2006/14 , C01P2006/16 , C01P2006/40 , H01M2004/028
Abstract: Provided are a nickel-manganese composite hydroxide capable of producing a secondary battery having a high particle fillability and excellent battery characteristics when used as a precursor of a positive electrode active material and a method for producing the same. A nickel-manganese composite hydroxide is represented by General Formula: NixMnyMz(OH)2+α and contains a secondary particle formed of a plurality of flocculated primary particles. The primary particles have an aspect ratio of at least 3, and at least some of the primary particles are disposed radially from a central part of the secondary particle toward an outer circumference thereof. The secondary particle has a ratio I(101)/I(001) of a diffraction peak intensity I(101) of a 101 plane to a peak intensity I(001) of a 001 plane, measured by an X-ray diffraction measurement, of up to 0.15.
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公开(公告)号：US10236507B2
公开(公告)日：2019-03-19
申请号：US15115375
申请日：2015-01-29
Applicant: SUMITOMO METAL MINING CO., LTD.
Inventor： Koji Yamaji , Takehide Honma , Ryozo Ushio
Abstract: The object of the present invention is to improve the roundness of nickel-manganese composite hydroxide particles obtained by a crystallization process, and to improve the filling characteristic of cathode active material produced using the nickel-manganese composite hydroxide particles as a precursor. A reaction aqueous solution is formed by supplying a raw material aqueous solution including at least Ni and Mn, an aqueous solution including an ammonium-ion donor, and an alkali solution into a reaction tank, and mixing, then nickel-manganese composite hydroxide particles are crystallized. When doing this, the oxygen concentration inside the reaction tank is controlled to be 3.0% by volume or greater, the temperature of the reaction aqueous solution is controlled to be 35° C. to 60° C., and the nickel-ion concentration is controlled to be 1,000 mg/L or greater. As a result, nickel-manganese composite hydroxide particles are obtained that include secondary particles formed by an aggregation of plural primary particles and expressed by the general formula: NixMnyMt(OH)2+α (where 0.05≤x≤0.95, 0.05≤y≤0.95, 0≤t≤0.20, x+y+t=1, 0≤α≤0.5, and M is one or more elements selected from among Co, Ti, V, Cr, Zr, Nb, Mo, Hf, Ta and W); and the average value of the roundness of cathode active material having a particle size that is 70% the average particle size or more is 0.82 or greater, and the tap density is 2.20 g/cm3 or greater.
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公开(公告)号：US10858265B2
公开(公告)日：2020-12-08
申请号：US15569504
申请日：2016-04-27
Applicant: SUMITOMO METAL MINING CO., LTD.
Inventor： Takehide Honma , Koji Yamaji , Ryozo Ushio
IPC: C01G53/00 , H01M4/525 , H01M4/485 , H01M4/36 , H01M4/131 , H01M10/052 , H01M4/505 , H01M10/0525
Abstract: Provided is a cathode active material for a non-aqueous electrolyte secondary battery that improves the cycling characteristic and high-temperature storability without impairing the charge/discharge capacity and the output characteristics. A nickel cobalt containing composite hydroxide is obtained by using a batch type crystallization method in which a raw material aqueous solution that includes Ni, Co and Mg is supplied in an inert atmosphere to a reaction aqueous solution that is controlled so that the temperature is within the range 45° C. to 55° C., the pH value is within the range 10.8 to 11.8 at a reference liquid temperature of 25° C., and the ammonium-ion concentration is within the range 8 g/L to 12 g/L. An Al-coated composite hydroxide that is expressed by the general formula: Ni1-x-y-zCoxAlyMgz(OH)2 (where, 0.05≤x≤0.20, 0.01≤y≤0.06, and 0.01≤z≤0.03) is obtained by mixing a slurry that includes the nickel cobalt containing composite hydroxide with a coating aqueous solution that includes Al to form a mixed aqueous solution, and coating the secondary particles with a coating film that includes Al or an Al compound. A cathode active material that is configured so that component elements that include Al are uniformly dispersed in the secondary particles is synthesized using the Al-coated composite hydroxide as a precursor.
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公开(公告)号：US10361433B2
公开(公告)日：2019-07-23
申请号：US15527411
申请日：2015-11-13
Applicant: SUMITOMO METAL MINING CO., LTD.
Inventor： Koji Yamaji , Ryozo Ushio , Takehide Honma , Satoshi Yoshio
Abstract: A positive electrode active material for a nonaqueous electrolyte secondary battery contains lithium nickel cobalt zinc composite oxide represented by general formula (1): LiwNi1-x-y-zCoxZnyMzO2 (0.95≤w≤1.10, 0.05≤x≤0.3, 0.005≤y≤0.08, and 0≤z≤0.3, where M is at least one metal element selected from the group consisting of Mg, Al, Ti, Mn, Fe, and Cu), wherein the lithium nickel cobalt zinc composite oxide has a form of secondary particles each corresponding to an aggregation of primary particles of hexagonal lithium-containing composite oxide with a layered structure, contains zinc oxide on at least a part of a surface of the primary particles and/or a surface of the secondary particles, and has a (003)-plane crystallite diameter of 100 nm or larger and 160 nm or smaller, the diameter being obtained by X-ray diffraction and the Scherrer equation.
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Patent Agency Ranking
公开(公告)号：US20180331358A1
公开(公告)日：2018-11-15
申请号：US15527411
申请日：2015-11-13
Applicant: SUMITOMO METAL MINING CO., LTD.
Inventor： Koji Yamaji , Ryozo Ushio , Takehide Honma , Satoshi Yoshio
IPC: H01M4/525 , H01M4/36 , C01G53/00 , H01M10/0525
CPC classification number: H01M4/525 , C01G9/02 , C01G53/00 , C01G53/42 , C01G53/50 , C01P2002/60 , C01P2004/32 , C01P2004/50 , C01P2004/61 , C01P2004/84 , C01P2006/40 , H01M4/366 , H01M10/0525 , H01M2004/021 , H01M2004/028
Abstract: A positive electrode active material for a nonaqueous electrolyte secondary battery contains lithium nickel cobalt zinc composite oxide represented by general formula (1): LiwNi1-x-y-zCoxZnyMzO2(0.95≤w≤1.10, 0.05≤x≤0.3, 0.005≤y≤0.08, and 0≤z≤0.3, where M is at least one metal element selected from the group consisting of Mg, Al, Ti, Mn, Fe, and Cu), wherein the lithium nickel cobalt zinc composite oxide has a form of secondary particles each corresponding to an aggregation of primary particles of hexagonal lithium-containing composite oxide with a layered structure, contains zinc oxide on at least a part of a surface of the primary particles and/or a surface of the secondary particles, and has a (003)-plane crystallite diameter of 100 nm or larger and 160 nm or smaller, the diameter being obtained by X-ray diffraction and the Scherrer equation.
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公开(公告)号：US10084188B2
公开(公告)日：2018-09-25
申请号：US14411192
申请日：2013-07-01
Applicant: SUMITOMO METAL MINING CO., LTD.
Inventor： Kensaku Mori , Masanori Takagi , Koji Yamaji , Takehide Honma , Ryozo Ushio
IPC: H01M4/525 , C01G53/00 , H01M4/131 , H01M10/052 , H01M4/02
CPC classification number: H01M4/525 , C01G53/006 , C01G53/42 , C01G53/50 , C01G53/66 , C01P2004/62 , C01P2006/11 , C01P2006/12 , C01P2006/40 , H01M4/131 , H01M10/052 , H01M2004/028 , H01M2220/30
Abstract: A positive electrode active material is provided that has a high capacity, a low irreversible capacity, an excellent initial charge/discharge efficiency, and excellent rate characteristics. This positive electrode active material comprises a hexagonal lithium nickel complex oxide having a layer structure and represented by the general formula LixNi1−y−zCoyMzO2 (0.98≤x≤1.04, 0.25≤y≤0.40, 0≤z≤0.07, and M is at least one element selected from Al, Ti, Mn, Ga, Mg, and Nb), wherein a lithium occupancy rate in a lithium main layer as obtained by Rietveld analysis from the x-ray diffraction pattern is at least 98.7%, and a crystallite diameter as calculated from the peak for the (003) plane in x-ray diffraction is 50 to 300 nm.
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公开(公告)号：US12195352B2
公开(公告)日：2025-01-14
申请号：US17083411
申请日：2020-10-29
Applicant: SUMITOMO METAL MINING CO., LTD.
Inventor： Takehide Honma , Koji Yamaji , Ryozo Ushio
IPC: C01G53/00 , H01M4/131 , H01M4/36 , H01M4/485 , H01M4/505 , H01M4/525 , H01M10/052 , H01M10/0525
Abstract: Provided is a cathode active material for a non-aqueous electrolyte secondary battery that improves the cycling characteristic and high-temperature storability without impairing the charge/discharge capacity and the output characteristics. A nickel cobalt containing composite hydroxide is obtained by using a batch type crystallization method in which a raw material aqueous solution that includes Ni, Co and Mg is supplied in an inert atmosphere to a reaction aqueous solution that is controlled so that the temperature is within the range 45° C. to 55° C., the pH value is within the range 10.8 to 11.8 at a reference liquid temperature of 25° C., and the ammonium-ion concentration is within the range 8 g/L to 12 g/L. An Al-coated composite hydroxide that is expressed by the general formula: Ni1-x-y-zCoxAlyMgz(OH)2 (where, 0.05≤x≤0.20, 0.01≤y≤0.06, and 0.01≤z≤0.03) is obtained by mixing a slurry that includes the nickel cobalt containing composite hydroxide with a coating aqueous solution that includes Al to form a mixed aqueous solution, and coating the secondary particles with a coating film that includes Al or an Al compound. A cathode active material that is configured so that component elements that include Al are uniformly dispersed in the secondary particles is synthesized using the Al-coated composite hydroxide as a precursor.
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公开(公告)号：US20220399544A1
公开(公告)日：2022-12-15
申请号：US17865714
申请日：2022-07-15
Applicant: SUMITOMO METAL MINING CO., LTD.
Inventor： Takuma Nakamura , Haruki Kaneda , Takehide Honma , Takaaki Ando , Koji Yamaji
IPC: H01M4/525 , C01G53/00 , C01G53/04 , H01M4/505 , H01M10/0525
Abstract: Provided are a nickel-manganese composite hydroxide capable of producing a secondary battery having a high particle fillability and excellent battery characteristics when used as a precursor of a positive electrode active material and a method for producing the same. A nickel-manganese composite hydroxide is represented by General Formula: NixMnyMz(OH)2+α and contains a secondary particle formed of a plurality of flocculated primary particles. The primary particles have an aspect ratio of at least 3, and at least some of the primary particles are disposed radially from a central part of the secondary particle toward an outer circumference thereof. The secondary particle has a ratio I(101)/I(001) of a diffraction peak intensity I(101) of a 101 plane to a peak intensity I(001) of a 001 plane, measured by an X-ray diffraction measurement, of up to 0.15.
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公开(公告)号：US11476460B2
公开(公告)日：2022-10-18
申请号：US16320748
申请日：2017-06-06
Applicant: SUMITOMO METAL MINING CO., LTD.
Inventor： Takuma Nakamura , Haruki Kaneda , Takehide Honma , Takaaki Ando , Koji Yamaji
Abstract: Provided are a nickel-manganese composite hydroxide capable of producing a secondary battery having a high particle fillability and excellent battery characteristics when used as a precursor of a positive electrode active material and a method for producing the same. A nickel-manganese composite hydroxide is represented by General Formula: NixMnyMz(OH)2+α and contains a secondary particle formed of a plurality of flocculated primary particles. The primary particles have an aspect ratio of at least 3, and at least some of the primary particles are disposed radially from a central part of the secondary particle toward an outer circumference thereof. The secondary particle has a ratio I(101)/I(001) of a diffraction peak intensity I(101) of a 101 plane to a peak intensity I(001) of a 001 plane, measured by an X-ray diffraction measurement, of up to 0.15.
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