Patents by Inventor Norio Takami

Norio Takami 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).

  • Active material, electrode, secondary battery, battery pack, and vehicle
    Patent number: 11139476
    Abstract: According to one embodiment, there is provided an active material represented by a general formula Lix(NiaCobMncMd)1?s(Nb1?tTat)sO2. Here, M is at least one selected from the group consisting of Li, Ca, Mg, Al, Ti, V, Cr, Zr, Mo, Hf, and W, and 1.0?x?1.3, 0?a?0.9, 0?b?1.0, 0?c?0.8, 0?d?0.5, a+b+c+d=1, 0.005?s?0.3, and 0.0005?t?0.1 are satisfied.
    Type: Grant
    Filed: September 3, 2019
    Date of Patent: October 5, 2021
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tetsuya Sasakawa, Yasuhiro Harada, Norio Takami
  • Secondary battery, battery pack, vehicle, and stationary power supply
    Patent number: 11139463
    Abstract: According to one embodiment, a secondary battery is provided. The secondary battery includes a positive electrode, a negative electrode including titanium oxide particles, and an aqueous electrolyte. The surfaces of the titanium oxide particles are partially covered with an alkyl-based silane compound. The ratio IB/IA of the intensity IB of the second peak PB to the intensity IA of the first peak PA is within a range of 4 to 10. The first peak PA is a maximum peak present within a range of 3200 cm?1 to 3600 cm?1 in an infrared absorption spectrum of the titanium oxide particles. The second peak PB is a maximum peak present within a range of 565 cm?1 to 570 cm?1 in the infrared absorption spectrum of the titanium oxide particles.
    Type: Grant
    Filed: September 7, 2018
    Date of Patent: October 5, 2021
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yumiko Sekiguchi, Shinsuke Matsuno, Norio Takami
  • SECONDARY BATTERY, BATTERY PACK, AND VEHICLE
    Publication number: 20210296631
    Abstract: According to one embodiment, provided is a secondary battery including a positive electrode, a negative electrode, and an electrolyte. The negative electrode includes a niobium-titanium composite oxide having fluorine atoms on at least part of a surface the niobium-titanium composite oxide. An abundance ratio AF of fluorine atoms, an abundance ratio ATi of titanium atoms, and an abundance ratio ANb of niobium atoms on a surface of the negative electrode according to X-ray photoelectron spectroscopy satisfy a relationship of 3.5?AF/(ATi+ANb)?50.
    Type: Application
    Filed: August 31, 2020
    Publication date: September 23, 2021
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Keigo HOSHINA, Wen ZHANG, Tetsuya SASAKAWA, Yasuhiro HARADA, Norio TAKAMI
  • COMPOSITE ELECTROLYTE, SECONDARY BATTERY, BATTERY PACK, AND VEHICLE
    Publication number: 20210296681
    Abstract: According to one embodiment, a composite electrolyte includes inorganic solid particles, an ionic liquid and 0.5 to 10% by weight of a fibrous polymer. The ionic liquid includes cations and anions. The fibrous polymer has an average fiber diameter of 1 to 100 nm.
    Type: Application
    Filed: August 31, 2020
    Publication date: September 23, 2021
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Norio Takami, Takashi Kishi
  • ELECTRODE, SECONDARY BATTERY, BATTERY PACK, AND VEHICLE
    Publication number: 20210296653
    Abstract: According to one embodiment, an electrode includes a current collector and an active material-containing layer. The active material-containing layer includes an active material, a conductive agent, and cellulose fiber. The conductive agent includes carbon fiber. The active material-containing layer includes a first surface brought into contact with the current collector, and a second surface. 2000/mm2 or less of first agglomerates are present on the second surface. Each of the first agglomerates includes at least one of the carbon fiber or the cellulose fiber, and does not include the active material. Each of the first agglomerates has a longest diameter of 5 ?m or more and a shortest diameter of 1 ?m or more.
    Type: Application
    Filed: August 31, 2020
    Publication date: September 23, 2021
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Mitsuru ISHIBASHI, Wen ZHANG, Kazuomi Yoshima, Keigo HOSHINA, Norio TAKAMI
  • SECONDARY BATTERY, BATTERY PACK, VEHICLE, AND STATIONARY POWER SUPPLY
    Publication number: 20210296684
    Abstract: According to one embodiment, a secondary battery includes a positive electrode, a negative electrode, a nonaqueous electrolyte and a separator. The positive electrode includes a halide including one or more metal elements selected from the group consisting of copper, iron, nickel, cobalt, tin, and zinc. The negative electrode includes one or more selected from the group consisting of lithium metal, a lithium alloy, and a compound capable of having Li inserted and extracted. The nonaqueous electrolyte contains aluminum ions. The separator has lithium ion conductivity and is interposed between the positive electrode and the negative electrode.
    Type: Application
    Filed: August 31, 2020
    Publication date: September 23, 2021
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Norio TAKAMI, Takashi Kishi, Yasuhiro Harada
  • ELECTRODE, SECONDARY BATTERY, BATTERY PACK, AND VEHICLE
    Publication number: 20210296635
    Abstract: According to one embodiment, an electrode is provided. The electrode includes an active material-containing layer including active material particles containing a niobium-titanium composite oxide and a nitrogen atom-containing binder. The spectral data obtained by performing X-ray photoelectron spectroscopy measurement on a surface of the active material-containing layer includes a first peak existing at 210±5 eV position, a second peak existing at 458±5 eV position, and a third peak existing at 400±5 eV position. In the X-ray photoelectron spectroscopy measurement, an element ratio r1 of a nitrogen atom to a niobium atom and a titanium atom is within the range of 0.2 to 2.
    Type: Application
    Filed: August 31, 2020
    Publication date: September 23, 2021
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Kazuomi YOSHIMA, Yasuhiro HARADA, Norio TAKAMI
  • NEGATIVE ELECTRODE, SECONDARY BATTERY, BATTERY PACK, AND VEHICLE
    Publication number: 20210288306
    Abstract: According to one embodiment, a negative electrode is provided. The negative electrode includes a negative electrode active material-containing layer including a niobium titanium composite oxide and a sulfur-containing coating. Spectral data obtained by X-ray photoelectron spectroscopy on the surface of the negative electrode active material-containing layer includes a first peak with a peak top existing in the range of 208 eV to 210 eV and a second peak with a peak top existing in the range of 160 eV to 165 eV. The ratio (P2/P1) of the peak height P2 of the second peak to the peak height P1 of the first peak falls within the range of 0.05 to 2.
    Type: Application
    Filed: August 31, 2020
    Publication date: September 16, 2021
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Taro FUKAYA, Keigo HOSHINA, Yasuhiro HARADA, Norio TAKAMI
  • Inorganic compound particles, composite electrolyte, composite electrode, secondary battery, battery pack, and vehicle
    Patent number: 11108085
    Abstract: A plurality of inorganic compound particles contain a solvent, wherein a weight ratio of the solvent to the inorganic compound particles is greater than or equal to 8 weight % and less than or equal to 25 weight %; the inorganic compound particles having a lithium ion conductivity at 25° C. that is greater than or equal to 1×10-10 S/cm; and an average particle diameter of the inorganic compound particles is greater than or equal to 0.1 ?m and less than or equal to 5 ?m.
    Type: Grant
    Filed: August 31, 2018
    Date of Patent: August 31, 2021
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kazuomi Yoshima, Yasuhiro Harada, Norio Takami
  • Active material, active material composite material, electrode, secondary battery, battery pack, and vehicle
    Patent number: 11063256
    Abstract: According to one embodiment, an active material is provided. The active material includes particles of a monoclinic niobium titanium composite oxide. The particles include primary particles. The primary particles have an average aspect ratio of 5 or more.
    Type: Grant
    Filed: September 5, 2018
    Date of Patent: July 13, 2021
    Assignees: KABUSHIKI KAISHA TOSHIBA, Toshiba Infrastructure Systems & Solutions Corporation
    Inventors: Yasuhiro Harada, Norio Takami, Taro Fukaya, Takuya Iwasaki
  • Electrode structure, secondary battery, battery pack, and vehicle
    Patent number: 11050048
    Abstract: According to one embodiment, an electrode structure is provided. The electrode structure includes an electrode and a separator. The electrode includes an active material-containing layer. The active material-containing layer contains active material particles. The separator includes a layer of organic fibers and inorganic solid particles. The layer of organic fibers is on the active material containing layer. The inorganic solid particles are on the layer of organic fibers. The inorganic solid particles are disposed so as to be biased to a surface side opposite to an electrode side of the separator.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: June 29, 2021
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tomoe Kusama, Yasuhiro Harada, Kazuomi Yoshima, Norio Takami
  • Lithium ion secondary battery, battery pack, and vehicle
    Patent number: 11043693
    Abstract: According to one embodiment, a lithium ion secondary battery is provided. The lithium ion secondary battery includes a negative electrode containing a negative electrode active material-containing layer, a positive electrode, and an electrolyte containing Li ions and Na ions. The negative electrode active material-containing layer contains a Na-containing titanium composite oxide. A ratio (WE/WA) of an Na amount WE (g/g) in the electrolyte to an Na amount WA (g/g) in the negative electrode active material-containing layer satisfies Formula (1) below: 1×10?1?WE/WA?1×105??(1).
    Type: Grant
    Filed: February 28, 2018
    Date of Patent: June 22, 2021
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yusuke Namiki, Yasuhiro Harada, Norio Takami
  • Secondary battery, battery pack, and vehicle
    Patent number: 11018378
    Abstract: According to an embodiment, a secondary battery is provided. The secondary battery includes a positive electrode, a negative electrode, separator, and an aqueous electrolyte. The separator is located at least between the positive electrode and the negative electrode. The separator includes a composite film. The composite film includes a mixture of a polymeric material and ion conductive solid electrolyte particles having alkali metal ions conductivity. The polymeric material includes a polymer comprising a monomer unit. The monomer unit is a hydrocarbon with a functional group including at least one element selected from the group consisting of oxygen (O), sulfur (S), nitrogen (N), and fluorine (F). A ratio of the polymer in the polymeric material is not less than 70 mol %.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: May 25, 2021
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yasuyuki Hotta, Shinsuke Matsuno, Norio Takami, Kazuomi Yoshima
  • Electrode group, secondary battery, battery pack, and vehicle
    Patent number: 10978691
    Abstract: According to one embodiment, there is provided an electrode group including an electrically insulating layer, a first electrode, and a second electrode. The second electrode is stacked in a first direction on the first electrode with the electrically insulating layer interposed therebetween. The first electrode includes plural first end portions in one or more second directions among directions orthogonal to the first direction. The plural first end portions are disposed at different positions in at least one of the second directions.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: April 13, 2021
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Takashi Kishi, Kazuomi Yoshima, Tomoko Sugizaki, Yasuhiro Harada, Norio Takami
  • Secondary battery, battery pack, and vehicle
    Patent number: 10978752
    Abstract: According to one embodiment, a secondary battery is provided. The secondary battery includes a negative electrode. The negative electrode includes an active material composite. The active material composite includes active material particles and a layer covering at least a portion of surfaces of the active material particles. The active material particles include titanium-containing oxide particles. The layer contains N and Si. The layer includes a first surface facing the at least the portion of surfaces of the active material particles and a second surface defining a layer thickness from the first surface. An N concentration in the layer decreases from the first surface to the second surface. A Si concentration in the layer increases from the first surface to the second surface.
    Type: Grant
    Filed: September 5, 2018
    Date of Patent: April 13, 2021
    Assignees: KABUSHIKI KAISHA TOSHIBA, Toshiba Infrastructure Systems & Solutions Corporation
    Inventors: Taro Fukaya, Takashi Kishi, Kazuki Ise, Kazuomi Yoshima, Yasunobu Yamashita, Yasuhiro Harada, Norio Takami
  • SEPARATOR, ELECTRODE GROUP, SECONDARY BATTERY, BATTERY PACK, VEHICLE, AND STATIONARY POWER SUPPLY
    Publication number: 20210091358
    Abstract: A separator includes an inorganic particle layer including an inorganic particle, a polymeric binder and a fiber substance. A mass ratio of the fiber substance with respect to a total mass of the inorganic particle, the polymeric binder and the fiber substance is 0.1 mass % or more and 40 mass % or less.
    Type: Application
    Filed: May 26, 2020
    Publication date: March 25, 2021
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Wataru UNO, Yasuyuki HOTTA, Shinsuke MATSUNO, Norio TAKAMI
  • Active material, nonaqueous electrolyte battery, battery pack and vehicle
    Patent number: 10957900
    Abstract: According to one embodiment, there is provided an active material. The active material includes secondary particles. The secondary particles include first primary particles and second primary particles. The first primary particles include an orthorhombic Na-containing niobium-titanium composite oxide. The second primary particles include at least one selected from the group consisting of a carbon black, a graphite, a titanium nitride, a titanium carbide, a lithium titanate having a spinel structure, a titanium dioxide having an anatase structure, and a titanium dioxide having a rutile structure.
    Type: Grant
    Filed: September 9, 2016
    Date of Patent: March 23, 2021
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Keigo Hoshina, Yasuhiro Harada, Norio Takami
  • Electrode, secondary battery, battery pack, and vehicle
    Patent number: 10957906
    Abstract: According to one embodiment, an electrode is provided. The electrode includes an active material-containing layer which contains an active material. The active material includes a plurality of primary particles containing a niobium-titanium composite oxide. The average crystallite diameter of the plurality of primary particles is 90 nm or more. The average particle size (D50) of the plurality of primary particles is in a range of 0.1 ?m to 5 ?m. The average value (FUave) of the roughness shape coefficient (FU) according to Formula (1) below is less than 0.70 in 100 primary particles among the plurality of primary particles.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: March 23, 2021
    Assignees: KABUSHIKI KAISHA TOSHIBA, Toshiba Infrastructure Systems & Solutions Corporation
    Inventors: Yasuhiro Harada, Norio Takami, Kazuki Ise, Kazuomi Yoshima
  • COMPOSITE OXIDE, ACTIVE MATERIAL COMPOSITE MATERIAL, ELECTRODE, BATTERY, BATTERY PACK, AND VEHICLE
    Publication number: 20210083263
    Abstract: According to one embodiment, provided is a composite oxide containing lithium, niobium, and tantalum. A mass ratio of tantalum with respect to niobium is in a range of from 0.01% to 1.0%.
    Type: Application
    Filed: February 27, 2020
    Publication date: March 18, 2021
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yasuhiro HARADA, Norio TAKAMI, Kazuomi YOSHIMA, Yasunobu YAMASHITA
  • SEPARATOR, ELECTRODE GROUP, SECONDARY BATTERY, BATTERY PACK, VEHICLE, AND STATIONARY POWER SUPPLY
    Publication number: 20210083251
    Abstract: According to one embodiment, a separator is provided. The separator includes a composite membrane. The composite membrane includes a substrate layer, a first composite layer, and a second composite layer. The first composite layer is located on one surface of the substrate layer. The second composite layer is located on the other surface of the substrate layer. The composite membrane has a coefficient of air permeability of 1×10?14 m2 or less. The first composite layer has a first surface and a second surface. The first surface is in contact with the substrate layer. The second surface is located on an opposite side to the first surface. Denseness of a portion including the first surface is lower than denseness of a portion including the second surface in the first composite layer.
    Type: Application
    Filed: February 28, 2020
    Publication date: March 18, 2021
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yasuyuki HOTTA, Hayato SEKI, Kazuomi YOSHIMA, Shinsuke MATSUNO, Norio TAKAMI