Patents Assigned to Sumitomo Metal Mining Co., Ltd.
  • Patent number: 11312116
    Abstract: Boride particles represented by a general formula XB, (where X is at least one kind of metal element selected from Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Sr, Ca, and m is a number indicating an amount of boron in the general formula) are provided, wherein an amount of carbon included in the boride particles is 0.2% by mass or less, as measured by a combustion-infrared absorption method.
    Type: Grant
    Filed: December 28, 2016
    Date of Patent: April 26, 2022
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Kenji Fukuda, Mitsunobu Miratsu, Hirofumi Tsunematsu, Takeshi Chonan
  • Patent number: 11316155
    Abstract: There is provided a cathode active material precursor for a non-aqueous electrolyte secondary battery that is a complex metal hydroxide with a flow factor of 10 or greater to 20 or smaller.
    Type: Grant
    Filed: December 25, 2017
    Date of Patent: April 26, 2022
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Kenji Tashiro, Masanori Takagi
  • Publication number: 20220119274
    Abstract: A nickel manganese cobalt composite hydroxide, which is a precursor of a positive electrode active material, and which is composed of secondary particles to which primary particles containing a nickel, a manganese, and a cobalt are aggregated, or composed of the primary particles and the secondary particles, wherein a sodium content contained in the nickel manganese cobalt composite hydroxide is less than 0.0005% by mass. Also, a ratio of an average particle size of a lithium nickel manganese cobalt composite oxide divided by an average particle size of the nickel manganese cobalt composite hydroxide, which is a precursor, is 0.95 to 1.05, and further, when observing 100 or more particles of the lithium nickel manganese cobalt composite oxide selected randomly by a scanning electron microscope, a number that an aggregation of secondary particles is observed is 5% or less with respect to a total number of observed secondary particles.
    Type: Application
    Filed: December 26, 2019
    Publication date: April 21, 2022
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Hiroko OSHITA, Kazuomi RYOSHI
  • Patent number: 11305243
    Abstract: A chemical reaction device that supplies a raw material liquid into a solution and causes particles to precipitate in the solution is provided. The chemical reaction device includes an agitation tank configured to accommodate the solution, an impeller configured to agitate the solution, and a plurality of discharge parts configured to discharge the raw material liquid into the solution.
    Type: Grant
    Filed: June 12, 2017
    Date of Patent: April 19, 2022
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Shuhei Nakakura, Kazuhiko Tsuchioka, Koichiro Maki, Motoaki Saruwatari, Kazuomi Ryoshi, Masafumi Yoshida
  • Publication number: 20220115655
    Abstract: The cathode active material is capable of reducing cathode resistance of a secondary battery by enhancing electron conductivity thereof without reducing discharge capacity of the secondary battery. The method for manufacturing a cathode active material includes: mixing transition metal-containing composite compound particles containing lanthanum with a lithium compound to obtain a lithium mixture; calcinating the lithium mixture at a temperature equal to or lower than the melting point of the lithium compound; and then subjecting the lithium mixture to main firing at a firing temperature within a range of 725° C. to 1000° C. Lithium carbonate is preferably used as the lithium compound, and in this case, the calcination temperature is within a range of 600° C. to 723° C. It is preferable to obtain the transition metal-containing composite compound particles containing lanthanum by a coprecipitation method and to uniformly disperse a lanthanum element in the particles.
    Type: Application
    Filed: July 3, 2019
    Publication date: April 14, 2022
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Satoshi Kanada, Tetsutaro Hayashi
  • Publication number: 20220106198
    Abstract: A nickel cobalt aluminum composite hydroxide, which is a precursor of a positive electrode active material, and which is composed of secondary particles to which primary particles containing a nickel, a cobalt, and an aluminum are aggregated, or composed of the primary particles and the secondary particles, wherein a sodium content contained in the nickel cobalt aluminum composite hydroxide is less than 0.0005% by mass. Also, a ratio of an average particle size of a lithium nickel cobalt aluminum composite oxide divided by an average particle size of the nickel cobalt aluminum composite hydroxide, which is a precursor, is 0.95 to 1.05, and further, when observing 100 or more particles of the lithium nickel cobalt aluminum composite oxide selected randomly by a scanning electron microscope, a number that an aggregation of secondary particles is observed is 5% or less with respect to a total number of observed secondary particles.
    Type: Application
    Filed: December 26, 2019
    Publication date: April 7, 2022
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Hiroko OSHITA, Kazuomi RYOSHI
  • Publication number: 20220109139
    Abstract: A method for producing a positive electrode active material for a lithium ion secondary battery containing lithium-nickel composite oxide, includes: mixing a nickel compound, a lithium compound, and organic compound particles to obtain a lithium mixture; molding the lithium mixture to obtain a molded body; firing the molded body to obtain a fired body; and crushing the fired body to obtain lithium-nickel composite oxide powder.
    Type: Application
    Filed: December 23, 2019
    Publication date: April 7, 2022
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventor: Jun Suzuki
  • Patent number: 11296316
    Abstract: Provided are a positive electrode active material with which a nonaqueous electrolyte secondary battery having a high energy density can be obtained, a nickel-manganese composite hydroxide suitable as a precursor of the positive electrode active material, and production methods capable of easily producing these in an industrial scale. Provided is a nickel-manganese composite hydroxide represented by General Formula (1): NixMnyMz(OH)2+? and containing a secondary particle formed of a plurality of flocculated primary particles. The nickel-manganese composite hydroxide has a half width of a diffraction peak of a (001) plane obtained by X-ray diffraction measurement of at least 0.10° and up to 0.40° and has a degree of sparsity/density represented by [(void area within secondary particle/cross section of secondary particle)×100](%) of at least 0.5% and up to 10%. Also provided is a production method of the nickel-manganese composite hydroxide.
    Type: Grant
    Filed: July 28, 2017
    Date of Patent: April 5, 2022
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Haruki Kaneda, Yuki Koshika, Takaaki Ando
  • Publication number: 20220102718
    Abstract: A nickel manganese cobalt composite hydroxide, which is a precursor of positive electrode active material, and composed of secondary particles wherein primary particles containing nickel, manganese, and cobalt are aggregated, or composed of primary and secondary particles, wherein sodium content contained in nickel manganese cobalt composite hydroxide is less than 0.0005% by mass, and void ratio of particles of nickel manganese cobalt composite hydroxide is 20% to 50%. Also, ratio of average particle size of lithium nickel manganese cobalt composite oxide divided by average particle size of nickel manganese cobalt composite hydroxide, which is a precursor, is 0.95 to 1.05, and further, when observing 100 or more particles of lithium nickel manganese cobalt composite oxide selected randomly by scanning electron microscope, number that aggregation of secondary particles is observed is 5% or less with respect to total number of observed secondary particles.
    Type: Application
    Filed: December 26, 2019
    Publication date: March 31, 2022
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Hiroko OSHITA, Kazuomi RYOSHI
  • Patent number: 11289688
    Abstract: A method for producing a positive electrode active material for nonaqueous electrolyte secondary batteries is disclosed which includes cleaning a powder formed of a lithium-nickel composite oxide represented by a general formula LizNi1-x-yCoxMyO2 where 0?x?0.35; 0?y?0.10; 0.95?z?1.10; and M is at least one element selected from Mn, V, Mg, Mo, Nb, Ti, and Al with an aqueous lithium carbonate solution and drying the cleaned powder.
    Type: Grant
    Filed: November 19, 2020
    Date of Patent: March 29, 2022
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Hiroko Oshita, Kazuomi Ryoshi
  • Patent number: 11283072
    Abstract: Transition metal composite hydroxide particles as a precursor to a cathode active material for use in a non-aqueous electrolyte rechargeable battery, where the transition metal composite hydroxide has secondary particles formed by an aggregation of plate-shaped primary particles and fine primary particles, are described. The secondary particles have a center section formed by the plate-shaped primary particles, a layered structure with a low-density section formed by the fine primary particles, and a high-density section formed by the plate-shaped primary particles on the outside of the center section. The average value of the ratio of the center section outer diameter to the particle size of the secondary particles is 30% to 80%, and the average value of the ratio of the high-density section radial direction thickness to the particle size of the secondary particles is 5% to 25%.
    Type: Grant
    Filed: August 13, 2019
    Date of Patent: March 22, 2022
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Yasutaka Kamata, Taira Aida, Hiroyuki Toya
  • Publication number: 20220081318
    Abstract: Provided are surface-treated infrared-absorbing fine particles that are infrared-absorbing fine particles each having a crystallite size greater than or equal to 30 nm and a surface that is coated with a coating layer that contains at least one selected from a hydrolysis product of a metal chelate compound, a polymer of the hydrolysis product of the metal chelate compound, a hydrolysis product of a metal cyclic oligomer compound, and a polymer of the hydrolysis product of the metal cyclic oligomer compound.
    Type: Application
    Filed: December 12, 2019
    Publication date: March 17, 2022
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Hirofumi TSUNEMATSU, Takeshi CHONAN
  • Patent number: 11261520
    Abstract: Disclosed herein is a roll-to-roll long base material surface processing device capable of performing surface processing on a long base material with little occurrence of wrinkling in the long base material at low costs. The surface processing device includes: two can rolls that cool a long resin film transferred in a roll-to-roll manner in a vacuum chamber with a cooling medium circulated therein by wrapping the long resin film around outer circumferences thereof; and surface processing units typified by magnetron sputtering cathodes provided so as to face the outer circumferences of the two can rolls, wherein a second can roll of the two can rolls other than a most upstream first can roll has a gas release mechanism that releases a gas from the outer circumference.
    Type: Grant
    Filed: August 23, 2017
    Date of Patent: March 1, 2022
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventor: Hideharu Okami
  • Publication number: 20220055916
    Abstract: Provided is a production method and a production apparatus that increase a throughput of nickel sulfate per equipment. A first dissolution step I of introducing a nickel briquette, sulfuric acid, and water to a leaching tank (1) and dissolving the nickel briquette to obtain a primary nickel sulfate solution, and a second dissolution step II of introducing the primary nickel sulfate solution and additionally introducing a nickel briquette to a leaching adjustment tank (2) and dissolving the additionally introduced nickel briquette with free sulfuric acid in the primary nickel sulfate solution to obtain a nickel sulfate solution are executed in this order.
    Type: Application
    Filed: October 23, 2019
    Publication date: February 24, 2022
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventor: Hitoshi ISHIDA
  • Publication number: 20220052339
    Abstract: A positive electrode active material containing a lithium metal composite oxide composed of secondary particles formed by aggregated primary particles, comprising lithium, at least one metal element and at least one additive element, the lithium metal composite oxide having a crystal structure of layered rock salt structure and the metal element including nickel in a content of 60 to 90 atomic percent and the additive element including boron in content of more than 1.0 atomic percent and 6.0 atomic percent or less, the nickel content and the boron content each with respect to the sum of the metal element and the additive element, the porosity of the secondary particles being 8% or more and 20% or less; a non-aqueous electrolyte secondary battery containing the positive electrode active material; and a process for producing the positive electrode active material.
    Type: Application
    Filed: November 1, 2021
    Publication date: February 17, 2022
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Jun SUZUKI, Koji YAMAJI
  • Patent number: 11248133
    Abstract: A near infrared absorbing-fine-particle dispersion liquid having absorption in a near infrared region, having clear contrast, and being applicable to offset printing; a method for producing the same; an anti-counterfeit ink composition using the near infrared absorbing-fine-particle dispersion liquid; and anti-counterfeit printed matter using the near infrared absorbing-fine-particles. The near infrared absorbing-fine-particle dispersion liquid contains a solvent of one or more from vegetable oils or vegetable oil-derived compounds; near infrared absorbing-fine-particles of 2 mass % or more and 25 mass % or less, selected from one or more of hexaboride fine-particles expressed by formula XBa (where X is one or more kinds of specified elements, and 4.0?a?6.2); and a dispersant soluble in solvent and having a fatty acid in its structure, where the viscosity is 180 mPa·s or less. The anti-counterfeit printed matter is excellent in anti-counterfeit effect due to the near infrared absorbing-fine-particles.
    Type: Grant
    Filed: October 24, 2019
    Date of Patent: February 15, 2022
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Mika Okada, Hideaki Fukuyama
  • Patent number: 11251428
    Abstract: A method for manufacturing a positive electrode active material includes: (a) preparing a fired powder of a lithium nickel composite oxide by mixing a nickel compound selected from a nickel hydroxide including nickel, and an element selected from other transition metal elements, elements of the second group and elements of the thirteenth group of the Periodic System, a nickel oxyhydroxide thereof, and a nickel oxide obtained by roasting thereof, and a lithium compound, and firing the mixture at a maximum temperature of 650° C. to 850° C. under oxygen atmosphere; and (b) preparing a lithium nickel composite oxide powder by mixing the fired powder with water to obtain a slurry, washing the fired powder with water at a temperature of 10° C. to 40° C., while controlling an electrical conductivity of a liquid portion of the slurry to 30 mS/cm to 60 mS/cm, then filtering and drying the resultant fired powder.
    Type: Grant
    Filed: February 7, 2020
    Date of Patent: February 15, 2022
    Assignees: SUMITOMO METAL MINING CO., LTD., PANASONIC CORPORATION
    Inventors: Tomoko Iwanaga, Hideo Sasaoka, Satoshi Matsumoto, Yutaka Kawatate, Shinji Arimoto
  • Publication number: 20220041465
    Abstract: Provided are a positive electrode active material with which a nonaqueous electrolyte secondary battery having a high energy density can be obtained, a nickel-manganese composite hydroxide suitable as a precursor of the positive electrode active material, and production methods capable of easily producing these in an industrial scale. Provided is a nickel-manganese composite hydroxide represented by General Formula (1): NixMnyMz(OH)2+? and containing a secondary particle formed of a plurality of flocculated primary particles. The nickel-manganese composite hydroxide has a half width of a diffraction peak of a (001) plane obtained by X-ray diffraction measurement of at least 0.10° and up to 0.40° and has a degree of sparsity/density represented by [(void area within secondary particle/cross section of secondary particle)×100](%) of at least 0.5% and up to 10%. Also provided is a production method of the nickel-manganese composite hydroxide.
    Type: Application
    Filed: October 26, 2021
    Publication date: February 10, 2022
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Haruki Kaneda, Yuki Koshika, Takaaki Ando
  • Publication number: 20220037659
    Abstract: A main object of the present disclosure is to provide an all solid state battery with good capacity property. The present disclosure achieves the object by providing an all solid state battery comprising a cathode layer including a composite cathode active material, an anode layer, and a solid electrolyte layer formed between the cathode layer and the anode layer, and the composite cathode active material includes a cathode active material represented by LiaNixCoyAlzNbbO2 wherein 1.0?a?1.05, x+y+z+b=1, 0.8?x?0.83, 0.13?y?0.15, 0.03?z?0.04, 0<b?0.011; and a coating layer covering at least a part of a surface of the cathode active material and including an ion conductive oxide, and at least one of the cathode layer and the solid electrolyte layer includes a sulfide solid electrolyte.
    Type: Application
    Filed: July 22, 2021
    Publication date: February 3, 2022
    Applicants: Toyota Jidosha Kabushiki Kaisha, Sumitomo Metal Mining Co., Ltd.
    Inventors: Hideaki Nishimura, Yohei Shindo, Masaru Kuboto, So Yubuchi, Hitomi Nakamura, Ryousuke Okamoto, Kazuhide Hayashi, Mikako Touma
  • Patent number: 11235558
    Abstract: A solar radiation shielding laminated structure, having high visible light transmission property and solar radiation shielding property, low haze value, and high environmental stability with inexpensive production cost, using solar radiation shielding fine particles having high visible light transmission property and excellent solar shielding property and weather resistance, and provides a solar radiation shielding laminated structure in which an interlayer is sandwiched between two laminated sheets; the interlayer having, as an intermediate film, one or more kinds selected from a resin sheet containing solar radiation shielding fine particles and a resin film containing solar radiation shielding fine particles, the laminated sheets being selected from a sheet-glass not containing solar radiation shielding fine particles and a resin board not containing solar radiation shielding fine particles; wherein the solar radiation shielding fine particles are solar radiation shielding fine particles containing calcium
    Type: Grant
    Filed: September 14, 2018
    Date of Patent: February 1, 2022
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Kenji Adachi, Satoshi Yoshio