Patents by Inventor Hirofumi Nakamoto

Hirofumi Nakamoto 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: 20170352887
    Abstract: An object of the present disclosure is to provide an anode layer for a fluoride ion battery in which decomposition of a binder is restrained. The present disclosure attains the object by providing an anode layer to be used for a fluoride ion battery, the anode layer comprising an anode active material and a non-fluorine-based binder having aromaticity.
    Type: Application
    Filed: May 31, 2017
    Publication date: December 7, 2017
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, HONDA MOTOR CO., LTD., KYOTO UNIVERSITY
    Inventors: Hirofumi NAKAMOTO, Masao ICHIKAWA, Zempachi OGUMI, Takeshi ABE
  • Publication number: 20170352921
    Abstract: An object of the present disclosure is to provide a liquid electrolyte for a fluoride ion battery in which decomposition of a solvent is restrained. The present disclosure attains the object by providing a liquid electrolyte for a fluoride ion battery comprising a plurality of carbonate-based solvents and a fluoride salt, wherein the plurality of carbonate-based solvents contain: i) only propylene carbonate (PC) and dimethyl carbonate (DMC), ii) only ethylene carbonate (EC) and ethyl methyl carbonate (EMC), or iii) only ethyl methyl carbonate (EMC) and dimethyl carbonate (DMC).
    Type: Application
    Filed: May 31, 2017
    Publication date: December 7, 2017
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, KYOTO UNIVERSITY
    Inventors: Hirofumi NAKAMOTO, Zempachi OGUMI, Takeshi ABE
  • Publication number: 20170346316
    Abstract: An object of the present disclosure is to provide a secondary battery system that functions at high voltage. The present disclosure attains the object by providing a secondary battery system comprising: a hybrid ion battery provided with a cathode active material layer having a cathode active material that contains a metal element capable of taking two kinds or more of a positive valence, an anode active material layer having an anode active material that contains a metal element capable of taking a valence of +2 or more, and an electrolyte layer containing an alkali metal ion and fluoride anion, and formed between the cathode active material layer and the anode active material layer; and a controlling portion that controls charging and discharging of the hybrid ion battery; wherein the controlling portion controls discharging so that a potential of the cathode active material includes a potential range higher than 0.23 V (vs. SHE).
    Type: Application
    Filed: May 5, 2017
    Publication date: November 30, 2017
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, KYOTO UNIVERSITY
    Inventors: Hirofumi NAKAMOTO, Zempachi OGUMI, Takeshi ABE
  • Patent number: 9755276
    Abstract: An object of the present invention is to provide a liquid electrolyte for a fluoride ion battery with improved fluoride ion stability. By providing a liquid electrolyte for a fluoride ion battery comprising a fluoride salt and a diol compound in which one or two ether bonds are disposed between two OH groups, the present invention achieves the aforementioned object.
    Type: Grant
    Filed: July 31, 2015
    Date of Patent: September 5, 2017
    Assignees: Toyota Jidosha Kabushiki Kaisha, Kyoto University
    Inventors: Hirofumi Nakamoto, Zempachi Ogumi, Takeshi Abe
  • Patent number: 9722288
    Abstract: An object of the present invention is to provide a liquid electrolyte for batteries, which has excellent ion conductivity, a method for producing the liquid electrolyte and a battery including the liquid electrolyte. Disclosed is a liquid electrolyte for batteries, comprising a mesoionic compound represented by the following general formula (1): wherein R1 and R2 are each independently an alkyl group having 1 to 3 carbon atoms.
    Type: Grant
    Filed: August 28, 2012
    Date of Patent: August 1, 2017
    Assignees: NAGOYA INSTITUTE OF TECHNOLOGY, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tsunehisa Hirashita, Shuki Araki, Katsuyuki Kagami, Hirofumi Nakamoto, Taishi Shiotsuki
  • Patent number: 9620817
    Abstract: The present invention is to provide: a liquid electrolyte for batteries, which has excellent stability to lithium metals; a method for producing the liquid electrolyte; and a lithium battery comprising the liquid electrolyte. Presented is a liquid electrolyte for lithium batteries, wherein the liquid electrolyte comprises a mesoionic compound represented by the following general formula (1): wherein R1 is an aliphatic hydrocarbon group having 1 to 3 carbon atoms, and R2 is a group represented by any one of the following general formulae (2), (3) and (4): General Formula (2): —ClH2l—(OCH2)m—CnH2n+1; General Formula (3): —CxH2x—(CH2OCH2)y—CzH2z+1; and General Formula (4): —CpH2p—(C2H4OCH2)q—CrH2r+1.
    Type: Grant
    Filed: September 9, 2013
    Date of Patent: April 11, 2017
    Assignees: NAGOYA INSTITUTE OF TECHNOLOGY, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tsunehisa Hirashita, Shuki Araki, Hirofumi Nakamoto, Atsushi Shirasawa
  • Publication number: 20170077521
    Abstract: A main object of the present invention is to provide an anode current collector that is capable of inhibiting the reaction with liquid electrolyte. The present invention achieves the object by providing an anode current collector to be used for a fluoride ion battery; and the anode current collector being a simple substance of Fe, Mg, or Ti, or an alloy containing one or more of these metal elements.
    Type: Application
    Filed: August 31, 2016
    Publication date: March 16, 2017
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, KYOTO UNIVERSITY
    Inventors: Hirofumi NAKAMOTO, Zempachi OGUMI, Takeshi ABE
  • Publication number: 20170062805
    Abstract: An object of the present invention is to provide a fluoride ion battery in which excess voltage at the time of charging is decreased. The present invention achieves the object by providing a fluoride ion battery comprising a cathode active material layer containing a cathode active material, an anode active material layer containing an anode active material, and an electrolyte layer formed between the cathode active material layer and the anode active material layer; wherein the anode active material is an alloy containing at least a Ce element and a Pb element.
    Type: Application
    Filed: August 8, 2016
    Publication date: March 2, 2017
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, KYOTO UNIVERSITY
    Inventors: Hirofumi NAKAMOTO, Hidenori MIKI, Zempachi OGUMI, Takeshi ABE
  • Publication number: 20170018795
    Abstract: The problem to be solved is to provide a liquid electrolyte for a fluoride ion battery which allows a larger capacity of the battery. Solving the problem by providing a liquid electrolyte for a fluoride ion battery including a fluoride salt and a solvent to dissolve the fluoride salt, characterized in that the solvent is an aromatic material having an aromatic cation and an anion, and a molar ratio of the aromatic cation to a fluoride ion is more than 1.
    Type: Application
    Filed: January 19, 2015
    Publication date: January 19, 2017
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, KYOTO UNIVERSITY
    Inventors: Hirofumi NAKAMOTO, Zempachi OGUMI, Jun-ichi YAMAKI
  • Patent number: 9490501
    Abstract: An electrolytic solution for a fluoride ion battery includes: a fluoride salt; and an alcohol material that has one OH group, and in which a molar ratio of the alcohol material is more than 1 with respect to fluoride ions of the fluoride salt.
    Type: Grant
    Filed: April 15, 2015
    Date of Patent: November 8, 2016
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, KYOTO UNIVERSITY
    Inventors: Hirofumi Nakamoto, Zempachi Ogumi, Jun-ichi Yamaki
  • Publication number: 20160294009
    Abstract: The object of the present invention is to provide an electrolyte for a fluoride ion battery with high activity for fluoridating an active material. The present invention solves the problem by providing an electrolyte for a fluoride ion battery comprising a fluoride complex salt as at least one of LiPF6 and LiBF4, and an organic solvent; and B/A is 0.125 or more in the case where a substance amount of the organic solvent is regarded as A (mol) and a substance amount of the fluoride complex salt is regarded as B (mol).
    Type: Application
    Filed: March 16, 2016
    Publication date: October 6, 2016
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, KYOTO UNIVERSITY
    Inventors: Hirofumi NAKAMOTO, Zempachi OGUMI, Takeshi ABE
  • Publication number: 20160285129
    Abstract: A method for manufacturing a fluoride ion conducting electrolyte solution which can improve ionic conductivity includes a step of heating a fluoride and/or a solvent when the fluoride and the solvent are mixed, wherein a heating temperature at the step is lower than a temperature at which the solvent decomposes.
    Type: Application
    Filed: December 1, 2014
    Publication date: September 29, 2016
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, KYOTO UNIVERSITY
    Inventors: Hirofumi NAKAMOTO, Jun-ichi YAMAKI, Zempachi OGUMI
  • Publication number: 20160261003
    Abstract: A problem of the present invention is to provide a liquid electrolyte for a fluoride ion battery, in which fluoride anion conductivity is imparted to an ionic liquid containing fluoride complex anions. The present invention solves the problem by providing a liquid electrolyte for a fluoride ion battery, which comprises an ionic liquid containing specific fluoride complex anions and an anion acceptor having a specific acceptor number.
    Type: Application
    Filed: February 11, 2016
    Publication date: September 8, 2016
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, KYOTO UNIVERSITY
    Inventors: Hirofumi NAKAMOTO, Zempachi OGUMI, Jun-ichi YAMAKI
  • Publication number: 20160204471
    Abstract: An object of the present invention is to provide a liquid electrolyte for a lithium battery in which lowering of reactivity of a Li ion and an electrode active material due to a glyme is suppressed. In the present invention, the above object is achieved by providing a liquid electrolyte for a lithium battery comprising: a glyme represented by general formula: R1—O(CH2CH2O)n—R2 (in which R1 and R2 each independently represent an alkyl group with 4 or less carbon atoms or a fluoroalkyl group with 4 or less carbon atoms, and n is in the range of 2 to 10); a Li amide salt having a Li ion and a sulfonylamide anion; and a fluoride salt represented by XF (in which X represents Li, Na, K, Rb, or Cs).
    Type: Application
    Filed: November 23, 2015
    Publication date: July 14, 2016
    Inventors: Hirofumi NAKAMOTO, Zempachi OGUMI, Takeshi ABE
  • Patent number: 9306253
    Abstract: Provided is an electrolyte solution capable of further increasing the output of a lithium air battery, the electrolyte solution for a lithium air battery having a total bonding strength between Li2O2 is no less than 0.14.
    Type: Grant
    Filed: June 15, 2012
    Date of Patent: April 5, 2016
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hirofumi Nakamoto, Taishi Shiotsuki, Atsushi Shirasawa, Yushi Suzuki
  • Publication number: 20160087308
    Abstract: The present invention aims to a liquid electrolyte for a fluoride ion battery having high stability with respect to a fluoride ion. The present invention attains the object by providing a liquid electrolyte for a fluoride ion battery comprising: a fluoride salt; an alkali metal amide salt having an alkali metal cation and an amide anion; and a glyme represented by general formula: R1—O(CH2CH2O)n—R2 (in which R1 and R2 each independently represent an alkyl group with 4 or less carbon atoms or a fluoroalkyl group with 4 or less carbon atoms, and n is in the range of 2 to 10).
    Type: Application
    Filed: September 11, 2015
    Publication date: March 24, 2016
    Inventors: Hirofumi NAKAMOTO, Zempachi OGUMI, Takeshi ABE
  • Patent number: 9276289
    Abstract: An object of the present invention is to provide an ambient temperature molten salt having excellent electron conductivity in addition to ion conductivity. The present invention attains the object by providing an ambient temperature molten salt including a first imidazolium salt having a cationic segment represented by the general formula (1) and an anionic segment represented by MX4 (where M is a transition metal and X is a halogen); and a second salt having a cationic segment as a monovalent cation and an anionic segment as a halogen.
    Type: Grant
    Filed: October 22, 2010
    Date of Patent: March 1, 2016
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hirofumi Nakamoto, Fuminori Mizuno
  • Publication number: 20160043439
    Abstract: An object of the present invention is to provide a liquid electrolyte for a fluoride ion battery allowing a reaction between an active material and a fluoride ion. By providing a liquid electrolyte for a fluoride ion battery comprising: a fluoride salt; and a sulfonium compound having a cation in which R1, R2, and R3 (R1, R2, and R3 each independently represent hydrogen, an alkyl group, or a fluoroalkyl group) are bound to the S element, and an anion, wherein the molar ratio of the cation relative to the total of the cation and the fluoride ion (S+/(S++F?)) is 0.96 or more, the present invention achieves the aforementioned object.
    Type: Application
    Filed: July 31, 2015
    Publication date: February 11, 2016
    Inventors: Hirofumi Nakamoto, Zempachi Ogumi, Takeshi Abe
  • Publication number: 20160043440
    Abstract: An object of the present invention is to provide a liquid electrolyte for a fluoride ion battery with improved fluoride ion stability. By providing a liquid electrolyte for a fluoride ion battery comprising a fluoride salt and a diol compound in which one or two ether bonds are disposed between two OH groups, the present invention achieves the aforementioned object.
    Type: Application
    Filed: July 31, 2015
    Publication date: February 11, 2016
    Inventors: Hirofumi Nakamoto, Zempachi Ogumi, Takeshi Abe
  • Patent number: 9231278
    Abstract: Provided is an electrolyte solution for a magnesium battery, containing a mesoionic compound represented by the following general formula (1): (in general formula (1), R1 and R2 are each independently a C1-7 hydrocarbyl group or oxygen-containing hydrocarbyl group and X is O or S).
    Type: Grant
    Filed: February 27, 2014
    Date of Patent: January 5, 2016
    Assignees: NATIONAL UNIVERSITY CORPORATION NAGOYA INSTITUTE OF TECHNOLOGY, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tsunehisa Hirashita, Hirofumi Nakamoto