Patents by Inventor Nobuhiro Ogihara

Nobuhiro Ogihara 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).

  • Patent number: 11201330
    Abstract: A power storage device electrode includes a layered structure having an organic framework layer containing aromatic dicarboxylic acid anions and an alkali metal element layer in which alkali metal elements are coordinated to oxygen atoms contained in the carboxylic acid anion to form a framework as an electrode active material, and in the whole of the electrode active material, a conductive material and a water-soluble polymer, carboxymethyl cellulose as the water-soluble polymer is contained in a range of 1.5 mass % or more and 3.5 mass % or less. In addition, the layered structure is produced by a spray drying method, and the peak intensity ratio when the power storage device electrode is subjected to X-ray diffraction measurement satisfies a predetermined range.
    Type: Grant
    Filed: September 26, 2019
    Date of Patent: December 14, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Nobuhiro Ogihara, Osamu Hiruta, Yukiyoshi Ueno
  • Publication number: 20210384499
    Abstract: A main object of the present disclosure is to provide a method for producing an active material with a high productivity. The present disclosure achieves the object by providing a method for producing an active material, the method comprising steps of: a preparing step of preparing a dope solution including a metal ion that is an ion of a metal element M, and an aromatic hydrocarbon compound in a reduced condition, a precursor alloy producing step of producing a precursor alloy by doping the metal element M included in the dope solution to a Si raw material including a Si element, and a void forming step of forming a void by extracting the metal element M from the precursor alloy using an extracting agent.
    Type: Application
    Filed: May 28, 2021
    Publication date: December 9, 2021
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tetsuya WASEDA, Jun YOSHIDA, Hiroyuki KAWAURA, Yasuhito KONDO, Ryo SUZUKI, Hiroyuki NAKANO, Nobuhiro OGIHARA
  • Patent number: 11196089
    Abstract: An electricity storage device includes a positive electrode containing a positive electrode active material, a negative electrode containing a negative electrode active material, and an electrolyte that includes an organic crystal layer including a layered structure and an organic solvent introduced into the organic crystal layer and that is interposed between the positive electrode and the negative electrode to conduct alkali metal ions. The layered structure includes an organic backbone layer containing an aromatic dicarboxylic acid anion having an aromatic ring structure, and an alkali metal element layer containing an alkali metal element that is coordinated with oxygen contained in a carboxylic acid of the organic backbone layer to form a framework. At least one of the positive electrode and the negative electrode adsorbs and desorbs the ions to store and release electric charge.
    Type: Grant
    Filed: March 11, 2019
    Date of Patent: December 7, 2021
    Assignee: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventor: Nobuhiro Ogihara
  • Patent number: 11183686
    Abstract: The electrolyte according to the present disclosure is an electrolyte that conducts alkali metal ions and is used for producing an energy storage device. The electrolyte includes an organic crystal layer including a layered structure, the layered structure including an organic skeletal layer including aromatic dicarboxylic acid anions having an aromatic ring structure and an alkali metal element layer including an alkali metal element to which oxygen included in carboxylic acid anions of the organic skeletal layer are coordinated to form a skeleton, and an organic solvent charged in the organic crystal layer.
    Type: Grant
    Filed: September 17, 2018
    Date of Patent: November 23, 2021
    Assignee: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventor: Nobuhiro Ogihara
  • Publication number: 20210083334
    Abstract: A liquid composition is for use to feed carrier ions to a non-aqueous electrolyte secondary battery. The liquid composition includes a solvent and a dissolved substance. The dissolved substance includes an ionic compound. The ionic compound consists of a radical anion of an aromatic compound and a metal cation. The aromatic compound is a polyacene or a polyphenyl. The metal cation is an ion of the same type as the carrier ions.
    Type: Application
    Filed: August 27, 2020
    Publication date: March 18, 2021
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Katsuhiko NAGAYA, Shinobu OKAYAMA, Yukimasa NISHIDE, Nobuhiro OGIHARA, Yasuhito KONDO, Tsuyoshi SASAKI
  • Patent number: 10930962
    Abstract: The nitrogen battery of the present disclosure includes a positive electrode that uses nitrogen as a positive electrode active material, a negative electrode, and an ion conducting medium that contains a silane compound and conducts alkali metal ions.
    Type: Grant
    Filed: January 28, 2019
    Date of Patent: February 23, 2021
    Assignee: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventors: Nobuhiro Ogihara, Yoko Hase
  • Patent number: 10879015
    Abstract: A viologen compound is a crystalline compound including a heterocyclic moiety in which a carboxylate of an alkali metal is bound directly or indirectly to both ends of a basic skeleton containing 4,4?-bipyridinium and an anionic moiety that pairs with 4,4?-bipyridinium. The viologen compound can be used, for example, as a negative electrode active material for an electricity storage device including a negative electrode containing the negative electrode active material, a positive electrode containing a positive electrode active material capable of giving and receiving anions, and an ion-conducting medium that is disposed between the positive electrode and the negative electrode and conducts anions.
    Type: Grant
    Filed: November 23, 2018
    Date of Patent: December 29, 2020
    Assignee: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventors: Hitoshi Kumagai, Yuka Makino, Masaki Hasegawa, Nobuhiro Ogihara
  • Publication number: 20200106100
    Abstract: A power storage device electrode includes a layered structure having an organic framework layer containing aromatic dicarboxylic acid anions and an alkali metal element layer in which alkali metal elements are coordinated to oxygen atoms contained in the carboxylic acid anion to form a framework as an electrode active material, and in the whole of the electrode active material, a conductive material and a water-soluble polymer, carboxymethyl cellulose as the water-soluble polymer is contained in a range of 1.5 mass % or more and 3.5 mass % or less. In addition, the layered structure is produced by a spray drying method, and the peak intensity ratio when the power storage device electrode is subjected to X-ray diffraction measurement satisfies a predetermined range.
    Type: Application
    Filed: September 26, 2019
    Publication date: April 2, 2020
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Nobuhiro OGIHARA, Osamu HIRUTA, Yukiyoshi UENO
  • Patent number: 10566625
    Abstract: An electricity storage device 20 includes a positive electrode 22, a negative electrode 23 containing a layered structure of an aromatic dicarboxylic acid metal salt as an electrode active material, and an ion conducting medium 27 capable of conducting carrier ions. The layered structure is formed by spray-drying a solution prepared by containing aromatic dicarboxylic acid anions and alkali metal cations by using a spray-drying apparatus.
    Type: Grant
    Filed: January 31, 2018
    Date of Patent: February 18, 2020
    Assignee: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventors: Masaki Hasegawa, Nobuhiro Ogihara
  • Publication number: 20190305378
    Abstract: An electricity storage device includes a positive electrode containing a positive electrode active material, a negative electrode containing a negative electrode active material, and an electrolyte that includes an organic crystal layer including a layered structure and an organic solvent introduced into the organic crystal layer and that is interposed between the positive electrode and the negative electrode to conduct alkali metal ions. The layered structure includes an organic backbone layer containing an aromatic dicarboxylic acid anion having an aromatic ring structure, and an alkali metal element layer containing an alkali metal element that is coordinated with oxygen contained in a carboxylic acid of the organic backbone layer to form a framework. At least one of the positive electrode and the negative electrode adsorbs and desorbs the ions to store and release electric charge.
    Type: Application
    Filed: March 11, 2019
    Publication date: October 3, 2019
    Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventor: Nobuhiro OGIHARA
  • Patent number: 10418187
    Abstract: The carbon porous body of the present disclosure includes micropores and mesopores. A micropore volume determined at a temperature of 77K by as plot analysis of a nitrogen adsorption isotherm is 100 (cm3 (STP)/g) or more. A BET specific surface area determined from the nitrogen adsorption isotherm is 1,000 m2/g or more. The derivative of the nitrogen adsorption isotherm is 300 (cm3 (STP)/g) or more over the range where relative pressure P/P0 in the nitrogen adsorption isotherm is from 0.10 to 0.20 inclusive, and the derivative of the nitrogen adsorption isotherm is 200 (cm3 (STP)/g) or more over the range where the relative pressure P/P0 in the nitrogen adsorption isotherm is from 0.20 to 0.95 inclusive. The amount of nitrogen adsorbed when the relative pressure P/P0 in the nitrogen adsorption isotherm is 0.98 is 1,200 (cm3 (STP)/g) or more.
    Type: Grant
    Filed: February 17, 2017
    Date of Patent: September 17, 2019
    Assignee: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventors: Masaki Hasegawa, Nobuhiro Ogihara, Norihiko Setoyama
  • Publication number: 20190260014
    Abstract: The nitrogen battery of the present disclosure includes a positive electrode that uses nitrogen as a positive electrode active material, a negative electrode, and an ion conducting medium that contains a silane compound and conducts alkali metal ions.
    Type: Application
    Filed: January 28, 2019
    Publication date: August 22, 2019
    Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventors: Nobuhiro OGIHARA, Yoko HASE
  • Publication number: 20190180950
    Abstract: A viologen compound is a crystalline compound including a heterocyclic moiety in which a carboxylate of an alkali metal is bound directly or indirectly to both ends of a basic skeleton containing 4,4?-bipyridinium and an anionic moiety that pairs with 4,4?-bipyridinium. The viologen compound can be used, for example, as a negative electrode active material for an electricity storage device including a negative electrode containing the negative electrode active material, a positive electrode containing a positive electrode active material capable of giving and receiving anions, and an ion-conducting medium that is disposed between the positive electrode and the negative electrode and conducts anions.
    Type: Application
    Filed: November 23, 2018
    Publication date: June 13, 2019
    Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventors: Hitoshi KUMAGAI, Yuka MAKINO, Masaki HASEGAWA, Nobuhiro OGIHARA
  • Publication number: 20190123346
    Abstract: The electrolyte according to the present disclosure is an electrolyte that conducts alkali metal ions and is used for producing an energy storage device. The electrolyte includes an organic crystal layer including a layered structure, the layered structure including an organic skeletal layer including aromatic dicarboxylic acid anions having an aromatic ring structure and an alkali metal element layer including an alkali metal element to which oxygen included in carboxylic acid anions of the organic skeletal layer are coordinated to form a skeleton, and an organic solvent charged in the organic crystal layer.
    Type: Application
    Filed: September 17, 2018
    Publication date: April 25, 2019
    Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventor: Nobuhiro OGIHARA
  • Publication number: 20180301290
    Abstract: An electricity storage device includes a negative electrode having a layered structure that includes an organic backbone layer containing an aromatic compound having an aromatic ring structure, the aromatic compound being in the form of dicarboxylate anions, and an alkali metal element layer containing an alkali metal element coordinated with oxygen in the dicarboxylate anions to form a backbone, a positive electrode that provides electric double-layer capacity, and a nonaqueous electrolyte solution provided between the negative electrode and the positive electrode, the nonaqueous electrolyte solution containing an alkali metal salt. The layered structure may be provided in layers by a ?-electron interaction of the aromatic compound and may have a monoclinic crystal structure belonging to the space group P21/c. The positive electrode may contain activated carbon having a specific surface area of 1,000 m2/g or more.
    Type: Application
    Filed: June 14, 2016
    Publication date: October 18, 2018
    Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventor: Nobuhiro OGIHARA
  • Publication number: 20180287157
    Abstract: An electricity storage device 20 includes a positive electrode 22, a negative electrode 23 containing a layered structure of an aromatic dicarboxylic acid metal salt as an electrode active material, and an ion conducting medium 27 capable of conducting carrier ions. The layered structure is formed by spray-drying a solution prepared by containing aromatic dicarboxylic acid anions and alkali metal cations by using a spray-drying apparatus.
    Type: Application
    Filed: January 31, 2018
    Publication date: October 4, 2018
    Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventors: Masaki HASEGAWA, Nobuhiro OGIHARA
  • Publication number: 20170279116
    Abstract: The present invention aims at: providing an accelerated reaction in a liquid-phase reaction; forming, by way of the reaction, a metal oxide nanoparticle and carbon that carries the metal oxide nanoparticle in a highly dispersed state; and providing an electrode containing the carbon and an electrochemical device using the electrode. In order to solve the above-mentioned problem, shear stress and centrifugal force are applied to the reactant in the rotating reactor so that an accelerated chemical reaction is attained in the course of the reaction. Further, the carbon carrying a metal oxide nanoparticle in a highly dispersed state comprises: a metal oxide nanoparticle produced by the accelerated chemical reaction, wherein shear stress and centrifugal force are applied to a reactant in a rotating reactor in the course of the reaction; and carbon dispersed in the rotating reactor by applying shear stress and centrifugal force.
    Type: Application
    Filed: June 12, 2017
    Publication date: September 28, 2017
    Inventors: Katsuhiko NAOI, Nobuhiro OGIHARA, Shuichi ISHIMOTO
  • Publication number: 20170256365
    Abstract: The carbon porous body of the present disclosure includes micropores and mesopores. A micropore volume determined at a temperature of 77K by as plot analysis of a nitrogen adsorption isotherm is 100 (cm3 (STP)/g) or more. A BET specific surface area determined from the nitrogen adsorption isotherm is 1,000 m2/g or more. The derivative of the nitrogen adsorption isotherm is 300 (cm3 (STP)/g) or more over the range where relative pressure P/P0 in the nitrogen adsorption isotherm is from 0.10 to 0.20 inclusive, and the derivative of the nitrogen adsorption isotherm is 200 (cm3 (STP)/g) or more over the range where the relative pressure P/P0 in the nitrogen adsorption isotherm is from 0.20 to 0.95 inclusive. The amount of nitrogen adsorbed when the relative pressure P/P0 in the nitrogen adsorption isotherm is 0.98 is 1,200 (cm3 (STP)/g) or more.
    Type: Application
    Filed: February 17, 2017
    Publication date: September 7, 2017
    Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventors: Masaki HASEGAWA, Nobuhiro OGIHARA, Norihiko SETOYAMA
  • Patent number: 8932758
    Abstract: An electrode active material of the present invention is made of a layered composition including organic backbone layers containing an aromatic compound that is a dicarboxylic acid anion having a naphthalene backbone; and alkali metal element layers containing an alkali metal element coordinated to oxygen contained in the carboxylic acid anion to form a backbone. The layered composition has an interplanar spacing between (002) planes of 0.42400 to 0.42800 nm, an interplanar spacing between (102) planes of 0.37000 to 0.37600 nm, an interplanar spacing between (211) planes of 0.32250 to 0.32650 nm, and an interplanar spacing between (112) planes of 0.30400 to 0.30700 nm, as measured by X-ray diffraction. Preferably, the layered composition has an interplanar spacing between (200) planes of 0.50500 to 0.50950 nm as measured by X-ray diffraction.
    Type: Grant
    Filed: April 4, 2013
    Date of Patent: January 13, 2015
    Assignee: Kabushiki Kaisha Toyota Chuo Kenkyusho
    Inventors: Nobuhiro Ogihara, Takao Inoue
  • Patent number: 8795893
    Abstract: A nonaqueous secondary battery electrode contains, as an electrode active material, a layered composition including organic backbone layers containing an aromatic compound that is a dicarboxylic acid anion having two or more aromatic ring structures and having the two carboxylic acid anions of the dicarboxylic acid anion bonded to diagonally opposite positions of the aromatic compound and alkali metal element layers containing an alkali metal element coordinated to oxygen contained in the carboxylic acid anion to form a backbone. The nonaqueous secondary battery electrode is preferably used as a negative electrode. In addition, the layered composition is preferably formed in layers by ?-electron interaction of the aromatic compound and has a monoclinic crystal structure belonging to the space group P21/c.
    Type: Grant
    Filed: October 19, 2011
    Date of Patent: August 5, 2014
    Assignee: Kabushiki Kaisha Toyota Chuo Kenkyusho
    Inventor: Nobuhiro Ogihara