Patents by Inventor Kensuke Nakura

Kensuke Nakura 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).

  • POSITIVE ELECTRODE ACTIVE MATERIAL CONTAINING LITHIUM COMPOSITE OXIDE AND COVERING MATERIAL, AND BATTERY INCLUDING POSITIVE ELECTRODE ACTIVE MATERIAL
    Publication number: 20190036113
    Abstract: A positive electrode active material contains a lithium composite oxide and a covering material. The lithium composite oxide contains at least one element selected from the group consisting of fluorine, chlorine, nitrogen, and sulfur. The lithium composite oxide has a crystal structure that belongs to space group C2/m. The ratio I(003)/I(104) of a first integrated intensity I(003) of a first peak corresponding to a (003) plane to a second integrated intensity I(104) of a second peak corresponding to a (104) plane in an XRD pattern of the lithium composite oxide satisfies 0.05?I(003)/I(104)?0.90. The covering material has an electron conductivity of 106 S/m or less.
    Type: Application
    Filed: July 18, 2018
    Publication date: January 31, 2019
    Inventors: TAKAYUKI ISHIKAWA, RYUICHI NATSUI, KENSUKE NAKURA
  • POSITIVE ELECTRODE ACTIVE MATERIAL CONTAINING LITHIUM COMPOSITE OXIDE AND COVERING MATERIAL, AND BATTERY INCLUDING POSITIVE ELECTRODE ACTIVE MATERIAL
    Publication number: 20190036106
    Abstract: A positive electrode active material contains a lithium composite oxide and a covering material. The lithium composite oxide has a crystal structure that belongs to space group Fd-3m. The ration I(111)/I(400) of a first integrated intensity I(111) of a first peak corresponding to a (111) plane to a second integrated intensity I(400) of a second peak corresponding to a (400) plane in an XRD pattern of the lithium composite oxide satisfies 0.05?I(111)/I(400)?0.90. The covering material has an electron conductivity of 106 S/m or less.
    Type: Application
    Filed: July 13, 2018
    Publication date: January 31, 2019
    Inventors: TAKAYUKI ISHIKAWA, RYUICHI NATSUI, KENSUKE NAKURA
  • NEGATIVE ELECTRODE ACTIVE MATERIAL CONTAINING CARBON AND BORON, AND NITROGEN OR PHOSPHORUS, AND BATTERY INCLUDING THE SAME
    Publication number: 20190027778
    Abstract: A negative electrode active material includes a plurality of layers and lithium located between the plurality of layers, each of the plurality of layers containing carbon and boron, and nitrogen or phosphorus, wherein a molar ratio of the boron to the carbon is more than 0.6.
    Type: Application
    Filed: July 3, 2018
    Publication date: January 24, 2019
    Inventors: AKIRA KANO, RYOHEI MIYAMAE, KENSUKE NAKURA
  • LITHIUM SECONDARY BATTERY INCLUDING ELECTROLYTE CONTAINING CARBORANE ANION
    Publication number: 20190006714
    Abstract: A lithium secondary battery includes a positive electrode, a negative electrode on which a lithium metal is deposited in a charged state, a separator disposed between the positive electrode and the negative electrode, and a nonaqueous electrolyte containing a nonaqueous solvent and a lithium salt containing a carborane anion.
    Type: Application
    Filed: June 11, 2018
    Publication date: January 3, 2019
    Inventors: AKIRA KANO, HIROTETSU SUZUKI, JUNICHI SAKAMOTO, KENSUKE NAKURA
  • NEGATIVE ELECTRODE ACTIVE MATERIAL FOR RECHARGEABLE BATTERY USING CONVERSION REACTION, AND BATTERY INCLUDING THE SAME
    Publication number: 20190006705
    Abstract: A negative electrode active material includes a compound represented by a composition formula of MgxMe1-xO1-xH2x, where Me is at least one selected from the group consisting of Mn, Fe, Co, Ni, and Cu, and 0.5?x?0.9.
    Type: Application
    Filed: June 14, 2018
    Publication date: January 3, 2019
    Inventors: KAZUKO ASANO, AKIRA KANO, KENSUKE NAKURA
  • LITHIUM SECONDARY BATTERY INCLUDING ELECTROLYTE CONTAINING LITHIUM BORON COMPOUND
    Publication number: 20190006664
    Abstract: A lithium secondary battery includes a positive electrode, a negative electrode depositing a lithium metal in a charged state, a separator disposed between the positive electrode and the negative electrode, and a nonaqueous electrolyte containing a nonaqueous solvent and a lithium salt represented by a formula LiB(C6H5-mRm)4, where Rs each independently represent F or CF3, and m is an integer of 1 to 5.
    Type: Application
    Filed: June 11, 2018
    Publication date: January 3, 2019
    Inventors: AKIRA KANO, HIROTETSU SUZUKI, JUNICHI SAKAMOTO, KENSUKE NAKURA
  • LITHIUM SECONDARY BATTERY INCLUDING LITHIUM METAL AS NEGATIVE ELECTRODE ACTIVE MATERIAL
    Publication number: 20180337395
    Abstract: A lithium secondary battery includes: a positive electrode; a negative electrode including a negative electrode collector having a surface, on which a lithium metal is deposited during charge; a separator disposed between the positive electrode and the negative electrode; and a nonaqueous electrolyte solution filled between the positive electrode and the negative electrode. The negative electrode collector includes projection portions projecting from the surface toward the separator. There is no projection portion on an imaginary line extending from a first end to a second end opposite to the first end of the surface of the negative electrode collector and traversing a space between the projection portions.
    Type: Application
    Filed: April 26, 2018
    Publication date: November 22, 2018
    Inventors: TOORU MATSUI, JUNICHI SAKAMOTO, KAZUKO ASANO, AKIRA KANO, KENSUKE NAKURA
  • LITHIUM SECONDARY BATTERY INCLUDING LITHIUM METAL AS NEGATIVE ELECTRODE ACTIVE MATERIAL
    Publication number: 20180337394
    Abstract: A lithium secondary battery includes: a positive electrode; a negative electrode; a separator disposed between the positive electrode and the negative electrode; and a nonaqueous electrolyte solution filled between the positive electrode and the negative electrode. The negative electrode includes: an electrically conductive layer having a surface; and lithium metal pieces arranged spaced from each other on the surface of the electrically conductive layer. There is no lithium metal on an imaginary line extending from a first end to a second end opposite to the first end of the surface of the electrically conductive layer and traversing a space between the lithium metal pieces.
    Type: Application
    Filed: April 26, 2018
    Publication date: November 22, 2018
    Inventors: TOORU MATSUI, JUNICHI SAKAMOTO, KAZUKO ASANO, AKIRA KANO, KENSUKE NAKURA
  • POSITIVE ELECTRODE ACTIVE MATERIAL CONTAINING LITHIUM COMPOSITE OXIDE AND LITHIUM COMPOSITE OXYFLUORIDE, AND BATTERY INCLUDING POSITIVE ELECTRODE CONTAINING POSITIVE ELECTRODE ACTIVE MATERIAL
    Publication number: 20180205073
    Abstract: A positive electrode active material contains a lithium composite oxide and a lithium composite oxyfluoride. The lithium composite oxyfluoride covers at least part of the surface of the lithium composite oxide. The lithium composite oxyfluoride is represented by a composition formula Li?Me2?O?F?, where Me2 represents at least one selected from the group consisting of Mn, Co, Ni, Fe, Al, Cu, V, Nb, Mo, Ti, Cr, Zr, Zn, Na, K, Ca, Mg, Pt, Au, Ru, and W; and 1.0???2.1; 0.8???1.3; 1.5???2.9; and 0.1???1.5. The crystal structure of the lithium composite oxyfluoride belongs to space group Fm-3m.
    Type: Application
    Filed: December 18, 2017
    Publication date: July 19, 2018
    Inventors: RYUICHI NATSUI, KENSUKE NAKURA
  • POSITIVE ELECTRODE ACTIVE MATERIAL CONTAINING LITHIUM COMPOSITE OXYFLUORIDE AND ORGANOSILICON COMPOUND, AND BATTERY INCLUDING POSITIVE ELECTRODE CONTAINING THE POSITIVE ELECTRODE ACTIVE MATERIAL
    Publication number: 20180205087
    Abstract: A positive electrode active material contains a lithium composite oxyfluoride and an organosilicon compound binding to the lithium composite oxyfluoride. The organosilicon compound has insulation property.
    Type: Application
    Filed: December 12, 2017
    Publication date: July 19, 2018
    Inventors: TAKAYUKI ISHIKAWA, RYUICHI NATSUI, KENSUKE NAKURA
  • Lithium ion secondary battery and method for manufacturing the same
    Patent number: 9979012
    Abstract: A lithium ion secondary battery includes a positive electrode; a negative electrode; a separator disposed between the positive electrode and the negative electrode; and a non-aqueous electrolyte, wherein the positive electrode contains, as a positive electrode active material, a lithium-containing transition metal compound that belongs to space group Fd3-m and that contains lithium and transition metal M (M represents Mo, or Mo and at least one selected from the group consisting of Mn, Co, Ni, W, and V), a molar ratio of the lithium to the transition metal M is 2.7 or more and 3.3 or less, and a ratio of a mass of the lithium-containing transition metal compound to a total mass of the positive electrode active material in the positive electrode is 0.8 or more.
    Type: Grant
    Filed: August 1, 2014
    Date of Patent: May 22, 2018
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Ryuichi Natsui, Kensuke Nakura
  • POSITIVE ELECTRODE ACTIVE MATERIAL AND BATTERY USING POSITIVE ELECTRODE ACTIVE MATERIAL
    Publication number: 20180138496
    Abstract: A positive electrode active material comprising: a compound which has a crystal structure belonging to space group Fm-3m and which is represented by the following composition formula: LixMeyO?X?. In the formula, the Me represents one or more elements selected from the group consisting of Mn, Ni, Co, Fe, Al, Sn, Cu, Nb, Mo, Bi, Ti, V, Cr, Y, Zr, Zn, Na, K, Ca, Mg, Pt, Au, Ag, Ru, Ta, W, La, Ce, Pr, Sm, Eu, Dy, and Er. The X represents one element selected from the group consisting of Cl, Br, I, N, and S. The following conditions are satisfied: 0.5?x?1.5; 0.5?y?1.0; 1??<2; and 0<??1.
    Type: Application
    Filed: September 12, 2017
    Publication date: May 17, 2018
    Inventors: ISSEI IKEUCHI, RYUICHI NATSUI, KENSUKE NAKURA
  • POSITIVE-ELECTRODE ACTIVE MATERIAL AND BATTERY
    Publication number: 20180097227
    Abstract: A positive-electrode active material contains a compound that has a crystal structure belonging to a space group FM3-M and that is represented by the composition formula (1) and a lithium ion conductor, LixMeyO?F???(1) wherein Me denotes one or two or more elements selected from the group consisting of Mn, Co, Ni, Fe, Al, B, Ce, Si, Zr, Nb, Pr, Ti, W, Ge, Mo, Sn, Bi, Cu, Mg, Ca, Ba, Sr, Y, Zn, Ga, Er, La, Sm, Yb, V, and Cr, and the following conditions are satisfied. 17?x?2.2 0.8?y?1.3 1???2.5 0.
    Type: Application
    Filed: November 22, 2017
    Publication date: April 5, 2018
    Inventors: RYUICHI NATSUI, KENSUKE NAKURA
  • POSITIVE ELECTRODE FOR A BATTERY AND BATTERY INCLUDING POSITIVE ELECTRODE ACTIVE MATERIAL
    Publication number: 20180090757
    Abstract: A positive electrode active material for a battery, the positive electrode active material comprising a compound having a crystal structure of space group Fm-3m and represented by composition formula (1): LixMe1?Me2?O2 . . . (1). In the formula, Me1 represents one or more elements selected from the group consisting of Mn, Ni, Co, Fe, Al, Sn, Cu, Nb, Mo, Bi, Ti, V, Cr, Y, Zr, Zn, Na, K, Ca, Mg, Pt, Au, Ag, Ru, Ta, W, La, Ce, Pr, Sm, Eu, Dy, and Er, Me2 represents one or more elements selected from the group consisting of B, Si, and P, and the following conditions are met: 0<?; 0<?; ?+?=y; 0.5?x/y?3.0; and 1.5?x+y?2.3.
    Type: Application
    Filed: July 12, 2017
    Publication date: March 29, 2018
    Inventors: ISSEI IKEUCHI, RYUICHI NATSUI, KENSUKE NAKURA
  • POSITIVE-ELECTRODE ACTIVE MATERIAL AND BATTERY
    Publication number: 20180090760
    Abstract: A positive-electrode active material contains a compound that has a crystal structure belonging to a space group FM3-M and contains is represented by the composition formula (1) and an insulating compound, LixMeyO?F???(1) wherein Me denotes one or two or more elements selected from the group consisting of Mn, Co, Ni, Fe, Al, B, Ce, Si, Zr, Nb, Pr, Ti, W, Ge, Mo, Sn, Bi, Cu, Mg, Ca, Ba, Sr, Y, Zn, Ga, Er, La, Sm, Yb, V, and Cr, and the following conditions are satisfied. 1.7?x?2.2 0.8?y?1.3 1???2.5 0.
    Type: Application
    Filed: November 15, 2017
    Publication date: March 29, 2018
    Inventors: RYUICHI NATSUI, KENSUKE NAKURA
  • POSITIVE-ELECTRODE ACTIVE MATERIAL AND BATTERY
    Publication number: 20180090747
    Abstract: A positive-electrode active material containing a compound that has a crystal structure belonging to the space group FM-3M and is represented by the composition formula (1): LixMeyO?Fp ??(1) wherein Me denotes one or two or more elements selected from the group consisting of Mn, Co, Ni, Fe, and Al, and the following conditions are satisfied. 1.3?x?2.2 0.8?y?1.3 1???2.93 0.
    Type: Application
    Filed: November 14, 2017
    Publication date: March 29, 2018
    Inventors: RYUICHI NATSUI, KENSUKE NAKURA
  • POSITIVE-ELECTRODE ACTIVE MATERIAL AND BATTERY
    Publication number: 20180090745
    Abstract: A positive-electrode active material contains a compound that has a crystal structure belonging to the space group FM3-M and that is represented by the composition formula (1): LixMeyO?F???(1) wherein Me denotes one or two or more elements selected from the group consisting of B, Ce, Si, Zr, Nb, Pr, Ti, W, Ge, Mo, Sn, and solid solutions thereof, and the following conditions are satisfied. 1.8?x?2.2 0.8?y?1.3 1.2???2.5 0.5???1.
    Type: Application
    Filed: November 14, 2017
    Publication date: March 29, 2018
    Inventors: KAZUKO ASANO, RYUICHI NATSUI, KENSUKE NAKURA
  • POSITIVE-ELECTRODE ACTIVE MATERIAL AND BATTERY
    Publication number: 20180090746
    Abstract: A positive-electrode active material contains a compound that has a crystal structure belonging to a space group FM3-M and that is represented by the composition formula (1): LixAyMezO?F???(1) wherein A denotes Na or K, Me denotes one or two or more elements selected from the group consisting of Mn, Co, Ni, Fe, Al, B, Ce, Si, Zr, Nb, Pr, Ti, W, Ge, Mo, Sn, Bi, Cu, Mg, Ca, Ba, Sr, Y, Zn, Ga, Er, La, Sm, Yb, V, and Cr, and the following conditions are satisfied. 1.7?x+y?2.2 0?y?0.2 0.8?z?1.3 1???2.5 0.
    Type: Application
    Filed: November 14, 2017
    Publication date: March 29, 2018
    Inventors: RYUICHI NATSUI, KENSUKE NAKURA
  • Cathode active material for nonaqueous electrolyte secondary battery, nonaqueous electrolyte secondary battery, and method of producing cathode active material for nonaqueous electrolyte secondary battery
    Patent number: 9893356
    Abstract: The cathode active material for a nonaqueous electrolyte secondary battery according to an aspect of the present disclosure mainly comprises a compound represented by a composition formula: LixNay(Li?Na?Mn1????)O2, where x, y, ?, and ? satisfy 0.75?x?1.0, 0<y?0.01, 0.75<x+y?1, 0.16???0.3, 0???0.01, and 0.2??+??0.3.
    Type: Grant
    Filed: April 1, 2015
    Date of Patent: February 13, 2018
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Ryuichi Natsui, Kensuke Nakura
  • Heating reaction container
    Patent number: 9873099
    Abstract: Heating reaction container comprises: a first member; a second member; and a third member. An opening is closed by the second member being detachably fitted in the first member and by the third member being detachably fitted in the second member. ?1, ?2, and ?3 satisfy a relation of ?3>?2>?1, ?3=?2>?1, or ?3>?2=?1, where ?1 represents a thermal expansion coefficient of a first material of the first member, ?2 represents a thermal expansion coefficient of a second material of the second member, and ?3 represents a thermal expansion coefficient of a third material of the third member. A gap is present before heating, and a space is sealed, through the heating, by a first contact surface coming into intimate contact with a second contact surface and by a third contact surface coming into intimate contact with a fourth contact surface.
    Type: Grant
    Filed: March 7, 2016
    Date of Patent: January 23, 2018
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Kazuyoshi Honda, Kensuke Nakura, Ryuichi Natsui