Patents by Inventor Haruki Kaneda

Haruki Kaneda has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20210280864
    Abstract: Provided is a positive electrode active material with which a nonaqueous electrolyte secondary battery can be obtained that achieves both high energy density and output characteristics and thermal stability at the time of short-circuit owing to low conductivity. A positive electrode active material for a nonaqueous electrolyte secondary battery contains a lithium-nickel-manganese composite oxide containing a secondary particle formed of a plurality of flocculated primary particles. The lithium-nickel-manganese composite oxide is represented by General Formula (1): LidNi1-a-b-cMnaMbNbcO2-?, at least part of niobium is solid-solved in the primary particles, and a maximum niobium concentration within the primary particles is at least one time and up to three times an average niobium concentration within the primary particles.
    Type: Application
    Filed: August 31, 2017
    Publication date: September 9, 2021
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Haruki KANEDA, Yuki KOSHIKA
  • Publication number: 20210234163
    Abstract: A positive electrode active material for non-aqueous electrolyte secondary battery containing a lithium-nickel-manganese composite oxide formed of secondary particles with a plurality of aggregated primary particles, in which the positive electrode active material is represented by a general formula (1): LidN1?a?b?cMnaMbNbcO2+?, at least a part of niobium is solid-dissolved inside the primary particles, and an amount of lithium to be eluted into water when the positive electrode active material is immersed in water is 0.02% by mass or more and 0.10% by mass or less with respect to the entire positive electrode active material as determined by a neutralization titration method.
    Type: Application
    Filed: January 25, 2019
    Publication date: July 29, 2021
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Takuma Nakamura, Haruki Kaneda, Yuki Koshika
  • Publication number: 20210167378
    Abstract: The present invention relates to a positive electrode active material for non-aqueous electrolyte secondary battery, including lithium-nickel composite oxide particles having a layer structure of hexagonal system; and a lithium tungstate coating film disposed on a surface of secondary particles of the lithium-nickel composite oxide particles, wherein the positive electrode active material for non-aqueous electrolyte secondary battery includes, as metallic elements, lithium (Li), nickel (Ni), cobalt (Co), element M (M) which is at least one element selected from Mn, V, Mg, Mo, Nb, Ti, Ca, Cr, Zr, Ta, and Al, and tungsten (W), wherein a ratio of amount of substance in the metallic elements contained is Li:Ni:Co:M:W=a:1-x-y:x:y:z, wherein 0.97?a?1.25, 0?x?0.35, 0?y?0.35, and 0.005?z?0.030.
    Type: Application
    Filed: May 29, 2019
    Publication date: June 3, 2021
    Inventors: Yuki KOSHIKA, Haruki KANEDA, Jun YOKOYAMA
  • Publication number: 20200411858
    Abstract: A metal composite hydroxide represented by a general formula (1): Ni1?x?yCoxMnyMz(OH)2+? (where 0.02?x?0.3, 0.02?y?0.3, 0?z?0.05, and ?0.5???0.5 are satisfied and M is at least one element selected from the group consisting of Mg, Ca, Al, Si, Fe, Cr, V, Mo, W, Nb, Ti, and Zr), in which the metal composite hydroxide contains a first particle having a core portion inside the particle and a shell portion formed around the core portion and [(D90?D10)/MV] is less than 0.80.
    Type: Application
    Filed: February 20, 2019
    Publication date: December 31, 2020
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Takahiro Toma, Haruki Kaneda, Yuki Koshika
  • Publication number: 20200388841
    Abstract: A positive electrode active material for a nonaqueous electrolyte secondary battery is disclosed which contains a lithium-nickel-manganese composite oxide containing a secondary particle formed of a plurality of flocculated primary particles and a lithium-niobium compound. The positive electrode active material is represented by General Formula (1): LidNi1-a-b-cMnaMbNbcO2+? (M is at least one element selected from Co, W, Mo, V, Mg, Ca, Al, Ti, Cr, Zr, and Ta; and 0.03?a?0.60, 0?b?0.60, 0.02?c?0.08, a+b+c<1, 0.95?d?1.20, and 0???0.5, the lithium-nickel-manganese composite oxide has a (003)-plane crystallite diameter of at least 50 nm and up to 130 nm, the lithium-niobium compound is present on surfaces of the primary particles, and part of niobium in the positive electrode active material is solid-solved in the primary particles.
    Type: Application
    Filed: December 25, 2017
    Publication date: December 10, 2020
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Haruki Kaneda, Yuki Koshika, Takuma Nakamura
  • Publication number: 20200259177
    Abstract: A positive electrode active material for obtaining a lithium ion secondary battery, wherein capacity, electron conductivity, durability, and heat stability at the time of overcharge are improved, durability and heat stability being achieved at a high level, and including: a lithium nickel manganese composite oxide composed of secondary particles, in which a plurality of primary particles are flocculated, wherein the composite oxide is represented by a general formula (1): LidNi1-a-b-cMnaMbTicO2 (wherein, M is at least one kind of element selected from Co, W, Mo, V, Mg, Ca, Al, Cr, Zr and Ta, 0.05?a?0.60, 0?b?0.60, 0.02?c?0.08, 0.95?d?1.20), at least a part of titanium in the composite oxide is solid-solved in the primary particles, and, a lithium titanium compound exists on a surface of the positive electrode active material for the lithium ion secondary battery.
    Type: Application
    Filed: September 25, 2018
    Publication date: August 13, 2020
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Takuma NAKAMURA, Haruki KANEDA, Yuki KOSHIKA
  • Publication number: 20200052295
    Abstract: A positive electrode active material reduces an eluted lithium amount when used for a nonaqueous electrolyte secondary battery, and a nickel-manganese composite hydroxide as a precursor. A nickel-manganese composite hydroxide contains a secondary particle formed of a plurality of mutually flocculated primary particles and is represented by Formula (1): Nix1Mny1Mz1(OH)2+? (0.70?x1?0.95, 0.05?y1?0.30, x1+y1+z1=1.0, and 0???0.4 are satisfied; and M is at least one element selected from Co, Al, Ti, V, Cr, Zr, Nb, Mo, Hf, Ta, Fe, and W). The nickel-manganese composite hydroxide has a manganese-rich layer from a particle surface to a particle inner part of the secondary particle. The manganese-rich layer is represented by Formula (2): Nix2Mny2Mz2(OH)2+?. The thickness of the manganese-rich layer is at least 5% and up to 20% of the radius of the secondary particle.
    Type: Application
    Filed: October 31, 2017
    Publication date: February 13, 2020
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Yuki Koshika, Haruki Kaneda, Takaaki Ando
  • Patent number: 10553870
    Abstract: The present invention industrially provides: a non-aqueous electrolyte secondary battery having a high energy density and high cycling characteristics; a cathode active material for a non-aqueous electrolyte secondary battery having a high packing efficiency; and a nickel manganese containing composite hydroxide having a small particle size, a narrow particle size distribution, and a high sphericity. When producing the nickel manganese containing composite hydroxide by a crystallization reaction using material solution where metal compounds including nickel and manganese dissolve, a nucleation process is performed in a non-oxidizing atmosphere by stirring an aqueous solution for nucleation, that includes the quantity of the material solution corresponding to 0.6% to 5.0% of the whole amount of substance of metal element included in a metal compound used for the overall crystallization reaction.
    Type: Grant
    Filed: September 27, 2016
    Date of Patent: February 4, 2020
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Haruki Kaneda, Takaaki Ando, Ryozo Ushio
  • Patent number: 10522830
    Abstract: Provided is a method for producing a positive electrode active material for nonaqueous electrolyte secondary batteries that achieves both high thermal stability and high charge/discharge capacity and has excellent cycle characteristics and an easy and safe production method thereof, and a nonaqueous electrolyte secondary battery using the positive electrode active material. A method for producing a positive electrode active material for nonaqueous electrolyte secondary batteries includes a crystallization step of adding an alkaline aqueous solution to a mixed aqueous solution containing at least nickel and cobalt for crystallization to obtain a nickel-containing hydroxide represented by a general formula Ni1?a??b?COa?Mb?(OH)2, a mixing step of mixing the obtained nickel-containing hydroxide, a lithium compound, and a niobium compound to obtain a lithium mixture, and a firing step of firing the lithium mixture in an oxidative atmosphere at 700 to 840° C. to obtain a lithium-transition metal composite oxide.
    Type: Grant
    Filed: November 20, 2014
    Date of Patent: December 31, 2019
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Haruki Kaneda, Hiroko Oshita, Masanori Takagi, Ryozo Ushio
  • Publication number: 20190296348
    Abstract: Provided are a positive electrode active material that can provide a nonaqueous electrolyte secondary battery having high energy density and excellent output characteristics, 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 diffraction peak of a (001) plane of at least 0.35° and up to 0.50° and has a degree of sparsity/density represented by [(a void area within the secondary particle/a cross section of the secondary particle)×100](%) within a range of greater than 10% and up to 25%.
    Type: Application
    Filed: July 28, 2017
    Publication date: September 26, 2019
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Haruki Kaneda, Yuki Koshika, Takaaki Ando
  • Publication number: 20190260024
    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+? 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.
    Type: Application
    Filed: June 6, 2017
    Publication date: August 22, 2019
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Takuma Nakamura, Haruki Kaneda, Takehide Honma, Takaaki Ando, Koji Yamaji
  • Publication number: 20190252680
    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: Application
    Filed: July 28, 2017
    Publication date: August 15, 2019
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Takaaki Ando, Haruki Kaneda, Jun Suzuki
  • Publication number: 20190248673
    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: July 28, 2017
    Publication date: August 15, 2019
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Haruki Kaneda, Yuki Koshika, Takaaki Ando
  • Publication number: 20190252681
    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: July 28, 2017
    Publication date: August 15, 2019
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Haruki Kaneda, Yuki Koshika, Takaaki Ando
  • Publication number: 20180316006
    Abstract: The present invention industrially provides: a non-aqueous electrolyte secondary battery having a high energy density and high cycling characteristics; a cathode active material for a non-aqueous electrolyte secondary battery having a high packing efficiency; and a nickel manganese containing composite hydroxide having a small particle size, a narrow particle size distribution, and a high sphericity. When producing the nickel manganese containing composite hydroxide by a crystallization reaction using material solution where metal compounds including nickel and manganese dissolve, a nucleation process is performed in a non-oxidizing atmosphere by stirring an aqueous solution for nucleation, that includes the quantity of the material solution corresponding to 0.6% to 5.0% of the whole amount of substance of metal element included in a metal compound used for the overall crystallization reaction.
    Type: Application
    Filed: September 27, 2016
    Publication date: November 1, 2018
    Inventors: Haruki Kaneda, Takaaki Ando, Ryozo Ushio
  • Patent number: 9774036
    Abstract: A method for manufacturing a positive active material for a nonaqueous electrolyte secondary battery having both thermal stability and charge-discharge capacity at a high level as well as excellent cycle characteristics. The method for manufacturing a positive active material for a nonaqueous electrolyte secondary battery includes: a step of adding a niobium salt solution and an acid simultaneously to a slurry of a nickel-containing hydroxide, and controlling the pH of the slurry at between 7 and 11 on a 25° C. basis to obtain a nickel-containing hydroxide coated with a niobium compound; a step of mixing the nickel-containing hydroxide coated with the niobium compound with a lithium compound to obtain a lithium mixture; and a step of firing the lithium mixture in an oxidizing atmosphere at 700° C. to 830° C. to obtain a lithium-transition metal composite oxide.
    Type: Grant
    Filed: August 13, 2013
    Date of Patent: September 26, 2017
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Masanori Takagi, Haruki Kaneda, Hiroko Oshita, Kensaku Mori
  • Publication number: 20160293952
    Abstract: Provided is a method for producing a positive electrode active material for nonaqueous electrolyte secondary batteries that achieves both high thermal stability and high charge/discharge capacity and has excellent cycle characteristics and an easy and safe production method thereof, and a nonaqueous electrolyte secondary battery using the positive electrode active material. A method for producing a positive electrode active material for nonaqueous electrolyte secondary batteries includes a crystallization step of adding an alkaline aqueous solution to a mixed aqueous solution containing at least nickel and cobalt for crystallization to obtain a nickel-containing hydroxide represented by a general formula Ni1?a??b?COa?Mb?(OH)2, a mixing step of mixing the obtained nickel-containing hydroxide, a lithium compound, and a niobium compound to obtain a lithium mixture, and a firing step of firing the lithium mixture in an oxidative atmosphere at 700 to 840° C. to obtain a lithium-transition metal composite oxide.
    Type: Application
    Filed: November 20, 2014
    Publication date: October 6, 2016
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Haruki KANEDA, Hiroko OSHITA, Masanori TAKAGI, Ryozo USHIO
  • Publication number: 20150194673
    Abstract: A method for manufacturing a positive active material for a nonaqueous electrolyte secondary battery having both thermal stability and charge-discharge capacity at a high level as well as excellent cycle characteristics. The method for manufacturing a positive active material for a nonaqueous electrolyte secondary battery includes: a step of adding a niobium salt solution and an acid simultaneously to a slurry of a nickel-containing hydroxide, and controlling the pH of the slurry at between 7 and 11 on a 25° C. basis to obtain a nickel-containing hydroxide coated with a niobium compound; a step of mixing the nickel-containing hydroxide coated with the niobium compound with a lithium compound to obtain a lithium mixture; and a step of firing the lithium mixture in an oxidizing atmosphere at 700° C. to 830° C. to obtain a lithium-transition metal composite oxide.
    Type: Application
    Filed: August 13, 2013
    Publication date: July 9, 2015
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Masanori Takagi, Haruki Kaneda, Hiroko Oshita, Kensaku Mori