Patents by Inventor HIROTETSU SUZUKI

HIROTETSU SUZUKI 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: 20210020911
    Abstract: Provided is a battery including: a positive electrode containing a positive electrode active material; a negative electrode; and an electrolyte solution containing a nonaqueous solvent. The positive electrode active material contains a compound represented by composition formula (1) below and having a crystal structure belonging to space group FM3-M: LixMeyO?F?. (1) Here, Me is 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 C. x, y, ?, and ? satisfy the following conditions: 1.7?x?2.2, 0.8?y?1.3, 1???2.5, and 0.5???2, respectively. The nonaqueous solvent includes at least one solvent selected from hydrofluoroethers, phosphazenes, phosphates, and perfluoropolyethers.
    Type: Application
    Filed: September 30, 2020
    Publication date: January 21, 2021
    Inventors: Hirotetsu SUZUKI, Ryuichi NATSUI, Nobuhiko HOJO
  • Publication number: 20200381737
    Abstract: Provided is a secondary battery comprising a cathode comprising a cathode current collector and a cathode mixture layer containing and a cathode active material, an anode comprising an anode current collector and coating layer, and a non-aqueous electrolyte containing a non-aqueous solvent and a lithium salt which has been dissolved in the non-aqueous solvent. A surface of the anode current collector is coated with the coating layer. The coating layer contains an alkaline earth metal fluoride. During charge, a lithium metal is deposited on the anode. During discharge, the lithium metal is dissolved in the non-aqueous electrolyte.
    Type: Application
    Filed: April 29, 2020
    Publication date: December 3, 2020
    Inventor: HIROTETSU SUZUKI
  • Publication number: 20200381721
    Abstract: Provides is a cathode active material comprising particles each containing a lithium composite oxide, a coating layer containing an ammonium phosphate compound containing a metal other than lithium. The coating layer coats each of the particles. The metal other than lithium includes at least one selected from the group consisting of manganese, nickel, and cobalt.
    Type: Application
    Filed: April 13, 2020
    Publication date: December 3, 2020
    Inventor: HIROTETSU SUZUKI
  • Publication number: 20200381722
    Abstract: Provided is a cathode active material comprising particles each containing a lithium composite oxide; and a coating layer containing an ammonium phosphate compound and coating each of the particles.
    Type: Application
    Filed: April 13, 2020
    Publication date: December 3, 2020
    Inventor: HIROTETSU SUZUKI
  • Publication number: 20200381714
    Abstract: A cathode active material comprising a particle containing a lithium composite oxide, and a coating layer containing an ammonium phosphate compound and a polymer containing a structure unit represented by the following formula (1): where R is a hydrogen atom or a methyl group, wherein the particle is coated with the coating layer.
    Type: Application
    Filed: April 14, 2020
    Publication date: December 3, 2020
    Inventor: HIROTETSU SUZUKI
  • Patent number: 10833316
    Abstract: Provided is a battery including: a positive electrode containing a positive electrode active material; a negative electrode; and an electrolyte solution containing a nonaqueous solvent. The positive electrode active material contains a compound represented by composition formula (1) below and having a crystal structure belonging to space group FM3-M: LixMeyO?F?. (1) Here, Me is 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 C. x, y, ?, and ? satisfy the following conditions: 1.7?x?2.2, 0.8?y?1.3, 1???2.5, and 0.5???2, respectively. The nonaqueous solvent includes at least one solvent selected from hydrofluoroethers, phosphazenes, phosphates, and perfluoropolyethers.
    Type: Grant
    Filed: November 15, 2017
    Date of Patent: November 10, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Hirotetsu Suzuki, Ryuichi Natsui, Nobuhiko Hojo
  • Patent number: 10700380
    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: Grant
    Filed: June 11, 2018
    Date of Patent: June 30, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Akira Kano, Hirotetsu Suzuki, Junichi Sakamoto, Kensuke Nakura
  • Publication number: 20190379035
    Abstract: Provided is a lithium secondary battery comprising a cathode, an anode, and a non-aqueous electrolyte having lithium ion conductivity. A lithium metal is precipitated on a surface of the anode during charge of the lithium secondary battery. The lithium metal is dissolved from the surface of the anode in the non-aqueous electrolyte during discharge of the lithium secondary battery. The non-aqueous electrolyte contains a solvent and a lithium salt. The solvent includes a fluorinated ether. The fluorinated ether has a fluorination ratio of more than 0% and not more than 60%.
    Type: Application
    Filed: May 13, 2019
    Publication date: December 12, 2019
    Inventors: HIROTETSU SUZUKI, AKIRA KANO
  • Patent number: 10411303
    Abstract: A battery electrolyte comprises: a non-aqueous solvent including a perfluoropolyether that is functionalized at only one molecule end, the perfluoropolyether including perfluoroalkyl chains and oxygen atoms in such a manner that a perfluoroalkyl chain and an oxygen atom are alternately bound to each other; and a metal salt that is a magnesium salt, an alkaline earth metal salt, or an alkali metal salt, and that is dissolved in the non-aqueous solvent.
    Type: Grant
    Filed: May 25, 2017
    Date of Patent: September 10, 2019
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Hirotetsu Suzuki, Nobuhiko Hojo
  • Patent number: 10403935
    Abstract: Provided is an electrolytic solution including a nonaqueous solvent and an alkali metal salt. The alkali metal salt is dissolved in the nonaqueous solvent. The nonaqueous solvent contains a perfluoropolyether having a weight-average molecular weight of 350 or more and less than 760. Also provided is a battery including the electrolytic solution, a positive electrode containing a positive electrode active material that can occlude and release an alkali metal cation, and a negative electrode containing a negative electrode active material that can occlude and release the alkali metal cation.
    Type: Grant
    Filed: May 19, 2016
    Date of Patent: September 3, 2019
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Hirotetsu Suzuki, Nobuhiko Hojo
  • 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
  • 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
  • Publication number: 20180337430
    Abstract: A nonaqueous electrolyte includes a nonaqueous solvent and an alkali metal salt dissolved in the nonaqueous solvent. The nonaqueous solvent contains a perfluoropolyether and a nitrile compound represented by a formula Rf—CN, where Rf represents a hydrocarbon group which has a carbon number of 2 to 4 and in which at least one hydrogen atom is substituted with fluorine.
    Type: Application
    Filed: March 27, 2018
    Publication date: November 22, 2018
    Inventors: HIROTETSU SUZUKI, NOBUHIKO HOJO
  • Publication number: 20180331392
    Abstract: A nonaqueous electrolyte includes a nonaqueous solvent and an alkali metal salt dissolved in the nonaqueous solvent. The nonaqueous solvent contains a polar organic solvent, a perfluoropolyether, and a diester compound represented by a formula R1—O—C(?O)—[—(CF2)—]a—C(?O)—O—R2, where a is an integer of 1 to 4, and each of R1 and R2 represents one selected from the group consisting of an alkyl group having a carbon number of 1 to 4 and a hydrocarbon group which has a carbon number of 1 to 4 and in which at least one hydrogen atom is substituted with fluorine.
    Type: Application
    Filed: March 27, 2018
    Publication date: November 15, 2018
    Inventors: TOMOFUMI HAMAMURA, NOBUHIKO HOJO, HIROTETSU SUZUKI
  • Patent number: 10069164
    Abstract: Provided is an electrolytic solution including a nonaqueous solvent and an alkali metal salt. The alkali metal salt is dissolved in the nonaqueous solvent. The nonaqueous solvent contains a perfluoropolyether. The molecular ends of the perfluoropolyether are each an unsubstituted alkyl ether or an unsubstituted carboxylate. The perfluoropolyether has a repeating unit composed of a perfluoroalkyl chain and an oxygen atom. Also provided is a battery including the electrolytic solution, a positive electrode containing a positive electrode active material that can occlude and release an alkali metal cation, and a negative electrode containing a negative electrode active material that can occlude and release the alkali metal cation.
    Type: Grant
    Filed: May 19, 2016
    Date of Patent: September 4, 2018
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Hirotetsu Suzuki, Nobuhiko Hojo
  • Patent number: 10050310
    Abstract: A non-aqueous electrolytic solution of the present invention includes: a solvent component including a glyme solvent and a phosphazene solvent; and an alkali metal salt composed of an alkali metal cation and an anion, the alkali metal salt being dissolved in the solvent component. The phosphazene solvent is a cyclic phosphazene compound represented by the formula (1). where X1 to X6 each independently represent a halogen atom or OR1, R1 is a substituted or unsubstituted aromatic group or a substituted or unsubstituted saturated aliphatic group, the aromatic group and the saturated aliphatic group each optionally contain a halogen atom, a nitrogen atom, an oxygen atom, a sulfur atom, or a silicon atom, and the saturated aliphatic group is linear or cyclic.
    Type: Grant
    Filed: July 18, 2014
    Date of Patent: August 14, 2018
    Assignee: Panasonic Corporation
    Inventors: Hirotetsu Suzuki, Nobuhiko Hojo, Takayuki Nakatsutsumi
  • Patent number: 9923246
    Abstract: Provided is an electrolytic solution including a nonaqueous solvent and an alkali metal salt. The alkali metal salt is dissolved in the nonaqueous solvent. The nonaqueous solvent contains a perfluoropolyether and a fluorinated phosphate. Also provided is a battery including the electrolytic solution, a positive electrode containing a positive electrode active material that can occlude and release an alkali metal cation, and a negative electrode containing a negative electrode active material that can occlude and release the alkali metal cation.
    Type: Grant
    Filed: May 18, 2016
    Date of Patent: March 20, 2018
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Hirotetsu Suzuki, Nobuhiko Hojo
  • Publication number: 20180069267
    Abstract: Provided is a battery including: a positive electrode containing a positive electrode active material; a negative electrode; and an electrolyte solution containing a nonaqueous solvent. The positive electrode active material contains a compound represented by composition formula (1) below and having a crystal structure belonging to space group FM3-M: LixMeyO?F?. (1) Here, Me is 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 C. x, y, ?, and ? satisfy the following conditions: 1.7?x?2.2, 0.8?y?1.3, 1???2.5, and 0.5???2, respectively. The nonaqueous solvent includes at least one solvent selected from hydrofluoroethers, phosphazenes, phosphates, and perfluoropolyethers.
    Type: Application
    Filed: November 15, 2017
    Publication date: March 8, 2018
    Inventors: HIROTETSU SUZUKI, RYUICHI NATSUI, NOBUHIKO HOJO
  • Publication number: 20170358827
    Abstract: A battery electrolyte comprises: a non-aqueous solvent including a perfluoropolyether that is functionalized at only one molecule end, the perfluoropolyether including perfluoroalkyl chains and oxygen atoms in such a manner that a perfluoroalkyl chain and an oxygen atom are alternately bound to each other; and a metal salt that is a magnesium salt, an alkaline earth metal salt, or an alkali metal salt, and that is dissolved in the non-aqueous solvent.
    Type: Application
    Filed: May 25, 2017
    Publication date: December 14, 2017
    Inventors: HIROTETSU SUZUKI, NOBUHIKO HOJO
  • Patent number: 9640840
    Abstract: A sodium secondary battery includes a positive electrode, a negative electrode, and a non-aqueous electrolytic solution including a non-aqueous solvent. The non-aqueous solvent includes a fluoro group-containing chain carboxylic acid ester represented by General Formula (1): wherein R1 is an aromatic group, an unsaturated aliphatic group or a saturated aliphatic group; R2, R3 and R4 are each a hydrogen atom, an aromatic group, an unsaturated aliphatic group or a saturated aliphatic group; and at least one of R1, R2, R3 and R4 includes one or more fluoro groups.
    Type: Grant
    Filed: November 25, 2014
    Date of Patent: May 2, 2017
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Takayuki Nakatsutsumi, Nobuhiko Hojo, Hirotetsu Suzuki, Yu Otsuka