Patents Assigned to Sumitomo Metal Mining Co., Ltd.
  • Patent number: 11447663
    Abstract: An adhesive composition layer that transmits light in a visible light region and absorbs light in a near-infrared region, has a low haze value, and a near-infrared absorbing film, a laminated structure, a laminated body using the above adhesive composition and adhesive layer, and an adhesive layer, a near-infrared absorbing film, a laminated structure, a laminated body, and an adhesive composition containing composite tungsten oxide fine particles, a dispersant, a metal coupling agent having an amino group, an adhesive, and a crosslinking agent, wherein the composite tungsten oxide fine particles include a hexagonal crystal structure, and the composite tungsten oxide fine particles have lattice constant values such as 7.3850 ? or more and 7.4186 ? or less on the a-axis, and 7.5600 ? or more and 7.6240 ? or less on the c-axis, and the composite tungsten oxide fine particles having an average particle size of 100 nm or less.
    Type: Grant
    Filed: September 14, 2018
    Date of Patent: September 20, 2022
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Mika Okada, Hirofumi Tsunematsu, Takeshi Chonan
  • Publication number: 20220293933
    Abstract: A positive electrode active material for a lithium ion secondary battery, including a lithium-nickel composite oxide having a hexagonal layered structure and configured by particles including at least either single primary particles or secondary particles with a plurality of aggregated primary particles, wherein the particles included in the positive electrode active material have a cross section having one or more crystal faces, and the one or more crystal faces in the particles have an average misorientation of 0.7° or less from a reference orientation of each of the one or more crystal faces.
    Type: Application
    Filed: August 28, 2020
    Publication date: September 15, 2022
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Haruki Kaneda, Yuki Koshika, Yuki Koyama
  • Publication number: 20220293938
    Abstract: Provided are a positive electrode active material that can provide a secondary battery extremely excellent in output characteristics and having sufficient volume energy density, a nickel-manganese composite hydroxide as a precursor thereof, and methods for producing these. A nickel-manganese composite hydroxide is represented by General Formula (1): NixMnyMz(OH)2+? and contains a secondary particle formed of a plurality of flocculated primary particles. The nickel-manganese composite hydroxide has a half width of a (001) plane of at least 0.40° and has an average degree of sparsity/density represented by [(a void area within the secondary particle/a cross section of the secondary particle)×100] (%) falling within a range of greater than 22% and up to 40%.
    Type: Application
    Filed: May 31, 2022
    Publication date: September 15, 2022
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Haruki Kaneda, Yuki Koshika, Takaaki Ando
  • Patent number: 11444282
    Abstract: A positive electrode material for a lithium ion secondary battery containing carbon, in which, when a peak of the carbon that is measured by Raman scattering and is present at 2200 to 3400 cm?1 is peak-separated into peaks including five types of Voigt functions of a peak 1 having a peak top present at 2200 to 2380 cm?1, a peak 2 having a peak top present at 2400 to 2550 cm?1, a peak 3 having a peak top present at 2600 to 2750 cm?1, a peak 4 having a peak top present at 2850 to 2950 cm?1, and a peak 5 having a peak top present at 3100 to 3250 cm?1, an average of proportions of Gaussian functions in the peak 3 and the peak 4 is 90% or more and less than 100%.
    Type: Grant
    Filed: September 24, 2020
    Date of Patent: September 13, 2022
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Tsutomu Nozoe, Toyomasa Nakano
  • Publication number: 20220285676
    Abstract: A positive electrode active material for a lithium ion secondary battery, the positive electrode active material including a lithium-nickel composite oxide having a hexagonal layered structure and configured by single primary particles or by single primary particles and secondary particles with a plurality of aggregated primary particles, wherein a number proportion of the single primary particles to all of the particles is 30% or more, a ratio of a (003) diffraction peak intensity I(003) to a (104) diffraction peak intensity I(104) (I(003)/I(104)) is 2.0 or more, and a degree of circularity is 0.93 or more and 1.00 or less.
    Type: Application
    Filed: August 28, 2020
    Publication date: September 8, 2022
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Haruki Kaneda, Yuki Koshika, Yuki Furuichi
  • Publication number: 20220285679
    Abstract: A positive electrode active material for a lithium ion secondary battery, the positive electrode active material including a lithium-nickel composite oxide having a hexagonal layered structure and configured by particles including at least either single primary particles or secondary particles with a plurality of aggregated primary particles, wherein the particles of the positive electrode active material have a cross section having an area proportion of a crystal face having a maximum area in the particle of 80% or more when one crystal face is defined as a region having a crystal misorientation of 15° or less.
    Type: Application
    Filed: August 28, 2020
    Publication date: September 8, 2022
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Haruki Kaneda, Yuki Koshika
  • Patent number: 11437627
    Abstract: A metal adsorbent-carrying carbon material for a positive electrode for lithium ion secondary batteries including a carbon material; and a metal adsorbent which is supported on the carbon material, wherein the metal adsorbent is a material which can adsorb iron ions (Fe2+, Fe3+).
    Type: Grant
    Filed: March 25, 2021
    Date of Patent: September 6, 2022
    Assignee: Sumitomo Metal Mining Co., Ltd.
    Inventors: Shinichi Tanaka, Tsutomu Nozoe
  • Publication number: 20220278322
    Abstract: The positive electrode active material for a lithium ion secondary battery contains a lithium-nickel composite oxide, in which the lithium-nickel composite oxide contains lithium, nickel, manganese, titanium, niobium, and optionally an element M1, an amount of substance ratio of the respective elements is represented as Li:Ni:Mn:M:Ti:Nb=a:(1?x1?y1?b?c):x1:y1:b:c (provided that, 0.95?a?1.25, (1?x1?y1?b?c)<0.80, 0.03?x1?0.35, 0?y1?0.35, 0.005?b?0.05, and 0.001<c?0.03), in the amount of substance ratio, (b+c)?0.06 and b>c are satisfied, and an amount of lithium to be eluted in water is 0.07% by mass or less.
    Type: Application
    Filed: June 30, 2020
    Publication date: September 1, 2022
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Yuki Koshika, Haruki Kaneda
  • Patent number: 11426976
    Abstract: To provide a copper-clad laminate which maintains adhesion between a resin film and a conductor layer and which suppresses the occurrence of wrinkles. A copper-clad laminate has a base film containing a thermoplastic resin, an underlying metal layer film-formed on a surface of the base film by a dry plating method, and a copper layer film-formed on a surface of the underlying metal layer. The underlying metal layer has a mean thickness of 0.3 to 1.9 nm. Since the underlying metal layer has a mean thickness of 0.3 nm or more, it is possible to maintain adhesion between the base film and a conductor layer. Since the underlying metal layer has a mean thickness of 1.9 nm or less, it is possible to suppress an increase in the temperature of a film during film-forming of the underlying metal layer, and it is possible to suppress the occurrence of wrinkles.
    Type: Grant
    Filed: May 13, 2020
    Date of Patent: August 30, 2022
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Junichi Nagata, Hironori Tanba
  • Patent number: 11430990
    Abstract: Provided are a positive electrode active material with which a secondary battery having high charging and discharging capacities and an excellent cycle characteristic can be obtained, and a method for producing the same. A positive electrode active material for a nonaqueous electrolyte secondary battery includes a lithium-metal composite oxide represented by a general formula: LiaNixCoyMnzMtO2+? and containing a secondary particle formed of a plurality of flocculated primary particles. A void ratio obtained from an image analysis result of a cross section of the secondary particle, the image thereof being obtained by a scanning electron microscope, is at least 5% and up to 50% in a first area that is from a central part of the secondary particle to one half of a radius of the secondary particle, and is up to 1.5% in a second area that is outside the first area.
    Type: Grant
    Filed: July 28, 2017
    Date of Patent: August 30, 2022
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Takaaki Ando, Haruki Kaneda, Jun Suzuki
  • Patent number: 11430991
    Abstract: The present invention relates to a lithium-nickel composite oxide, wherein the lithium-nickel composite oxide is represented by a following general formula: Li1+uNixCoyAsBtO2+?, wherein u, x, y, s, t and ? in the formula satisfy 0?u<0.3, 0.03?x?0.93, 0.03?y?0.50, 0.04?s?0.6, 0?t<0.1, 0??<0.3 and x+y+s+t=1, wherein an element A is at least one selected from Mn and Al, and an element B is at least one selected from Mg, Ca, Ti, V, Zr, Nb, Mo, Sr and W, and wherein a content of Fe is less than 10 ppb, and a content of Cr is less than 10 ppb.
    Type: Grant
    Filed: March 27, 2019
    Date of Patent: August 30, 2022
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventor: Yoshihiro Inoue
  • Publication number: 20220271272
    Abstract: The method includes: a dry mixing process of mixing a tungsten compound with a lithium nickel manganese cobalt-containing composite oxide that is a base material to obtain a mixture; a water spray mixing process of spraying water to the mixture while the mixture is stirred, to mix the mixture; a heat treatment process of subjecting the mixture obtained after the water spray mixing process to a heat treatment at a temperature of 500° C. or lower; and a drying process of drying the mixture obtained after the heat treatment process at a temperature of 500° C. or lower to obtain a W- and Li-containing compound-coated lithium nickel manganese cobalt-containing composite oxide in which fine particles and coating films of a W- and Li-containing compound exist on a surface of the primary particles, and in at least drying process, the drying is performed using a vacuum dry mixing apparatus in a vacuum atmosphere.
    Type: Application
    Filed: June 8, 2020
    Publication date: August 25, 2022
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Toshihiro Kato, Tetsutaro Hayashi, Willy Shun Kai Bong
  • Patent number: 11424448
    Abstract: Provided is a positive electrode active material for a nonaqueous electrolyte secondary battery including a LiNi composite oxide having low internal resistance and excellent thermal stability. The positive electrode active material is obtained by performing a water washing process using a water spray on a LiNi composite oxide powder obtained by a firing step until the filtrate has an electric conductivity of 30 to 60 mS/cm, and then dried, where the LiNi composite oxide is represented by the composition formula (1): LibNi1?aM1aO2, where M1 represents at least one kind of element selected from transition metal elements other than Ni, group 2 elements, and group 13 elements, and 0.01?a?0.5, and 0.85?b?1.05.
    Type: Grant
    Filed: June 25, 2018
    Date of Patent: August 23, 2022
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Tomoko Nakayama, Jun Yokoyama, Tetsufumi Komukai
  • Publication number: 20220250144
    Abstract: Provided is a nickel powder in which growth of the nickel hydroxide component into a plate-shaped crystal is suppressed in the oxide film, and the content of coarse particles containing plate-shaped nickel hydroxide is small, and provided is a method for manufacturing the nickel powder by a wet process in which the nickel powder can be produced further simply and easily. A nickel powder including: particles having a substantially spherical shape and a number average size of 0.03 ?m to 0.4 ?m; and an oxide film, on the particle surface, containing a basic salt of nickel hydroxide, wherein the content of coarse particles having a particle size of more than 0.8 ?m is 200 mass ppm or less, and the content of coarse particles having a particle size of more than 1.2 ?m is 100 mass ppm or less.
    Type: Application
    Filed: July 30, 2020
    Publication date: August 11, 2022
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Yuki Kumagai, Atsushi Igari, Minseob Shin, Shingo Suto, Masaya Yukinobu
  • Publication number: 20220251400
    Abstract: An infrared-absorbing fine particle-containing composition, including: infrared absorbing fine particles, a dispersant, and a solvent, wherein the dispersant has a polyether structure, has a glass transition temperature of ?150° C. or higher and 0° C. or lower, and is contained in an amount of 10 parts by mass or more with respect to 100 parts by mass of the infrared absorbing fine particles, and a solvent content is 10 mass % or less.
    Type: Application
    Filed: July 9, 2020
    Publication date: August 11, 2022
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Hirofumi TSUNEMATSU, Takeshi CHONAN, Mika OKADA, Hideaki FUKUYAMA
  • Patent number: 11411214
    Abstract: A positive electrode active material for nonaqueous electrolyte secondary batteries and production method thereof that are able to improve the stability of positive electrode mixture material pastes used to produce nonaqueous electrolyte secondary batteries, as well as to improve the output characteristics and charge/discharge cycle characteristics of secondary batteries. A method for producing a positive electrode active material for nonaqueous electrolyte secondary batteries includes mixing a fired powder formed of a lithium-metal composite oxide having a layered crystal structure, a first compound which is at least one selected from a group consisting of a lithium-free oxide, a hydrate of the oxide, and a lithium-free inorganic acid salt, and water and drying a mixture resulting from the mixing. The fired powder includes secondary particles formed by agglomeration of primary particles. The first compound reacts with lithium ions in the presence of water to form a second compound including lithium.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: August 9, 2022
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Taira Aida, Jiro Okada, Tetsufumi Komukai, Koji Yamaji, Ryozo Ushio
  • Patent number: 11411210
    Abstract: A positive electrode active material for a non-aqueous electrolyte secondary battery includes a lithium metal composite oxide, wherein the lithium metal composite oxide is represented by a general formula: LiaNi1-x-y-zCoxDyEzO2 (wherein, in the formula, 0.05?x?0.35, 0?y?0.35, 0.002?z?0.05, 1.00?a?1.30, an element D is at least one type of element selected from Mn, V, Mo, Nb, Ti, and W, and an element E is an element forming an alloy with lithium at a potential more noble than a potential in which ions of the element E are reduced), wherein the lithium metal composite oxide includes primary and secondary particles formed by aggregating the primary particles, wherein an oxide containing the element E exists at a surface of at least either of the primary and secondary particles.
    Type: Grant
    Filed: June 27, 2018
    Date of Patent: August 9, 2022
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Takahiro Toma, Atsushi Fukui, Taira Aida, Tetsufumi Komukai
  • Patent number: 11404690
    Abstract: The presently disclosed subject matter is directed to a positive electrode active material for a non-aqueous electrolyte secondary battery including a lithium transition metal-containing composite oxide, comprising secondary particles formed by aggregates of primary particles. The secondary particles comprise: an outer-shell section formed by an aggregate of the primary particles; at least one aggregate section formed by an aggregate of primary particles and existing on an inside of the outer-shell section, and electrically and structurally connected to the outer-shell section; and at least one space section existing on the inside of the outer-shell section and in which there are no primary particles. The average particle size of the secondary particles being within the range 1 ?m to 15 ?m, an index [(d90-d10)/average particle size] that indicates a spread of a particle size distribution of the secondary particles being 0.7 or less, and the surface area per unit volume being 1.7 m2/cm3 or greater.
    Type: Grant
    Filed: December 10, 2019
    Date of Patent: August 2, 2022
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Takahiro Toma, Taira Aida, Tetsufumi Komukai, Yasutaka Kamata
  • Patent number: 11390534
    Abstract: A tungsten trioxide whose IWO2.90/IWO3.00 is less than or equal to 0.15 is provided. IWO2.90/IWO3.00 indicates a ratio of a peak intensity IWO2.90 of a (200) plane of WO2.90 to a peak intensity IWO3.00 of a (200) plane of WO3.00 in an XRD pattern.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: July 19, 2022
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Toshiaki Aihara, Hiroyuki Toya
  • Patent number: 11389875
    Abstract: The purpose of the present invention is to provide a process for producing nickel powder capable of obtaining fine nickel powder in wet process, and also, capable of decreasing content of impurities by medicament (additive) used in crystallization of nickel powder which is reduction reaction. 1.
    Type: Grant
    Filed: December 5, 2017
    Date of Patent: July 19, 2022
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Junji Ishii, Hiroyuki Tanaka, Masaya Yukinobu