Patents by Inventor Akitoshi Hayashi

Akitoshi Hayashi 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: 11349123
    Abstract: An amorphous oxide-based positive electrode active material that is a production material of a positive electrode for an all-solid secondary battery, wherein the amorphous oxide-based positive electrode active material (i) comprises an alkali metal selected from Li and Na; a second metal selected from Co, Ni, Mn, Fe, Cr, V, Cu, Ti, Zn, Zr, Nb, Mo, Ru and Sn; an ionic species selected from phosphate ion, sulfate ion, borate ion, silicate ion, aluminate ion, germanate ion, nitrate ion, carbonate ion and halide ion; and an oxygen atom (except for the oxygen atom constituting the ionic species); (ii) contains at least an amorphous phase; and (iii) is a production material of a positive electrode with a thickness of 20 ?m or more.
    Type: Grant
    Filed: March 8, 2017
    Date of Patent: May 31, 2022
    Assignee: UNIVERSITY PUBLIC CORPORATION OSAKA
    Inventors: Akitoshi Hayashi, Masahiro Tatsumisago
  • Patent number: 11342580
    Abstract: A solid electrolyte for all-solid sodium battery expressed by Na3-xSbS4-xAx, wherein A is selected from F, Cl, Br, I, NO3, BH4, BF4, PF6, ClO4, BH4, CF3SO3, (CF3SO2)2N, (C2F5SO2)2N, (FSO2)2N, and [B(C2O4)2]; and x is 0<x<3.
    Type: Grant
    Filed: November 5, 2018
    Date of Patent: May 24, 2022
    Assignee: UNIVERSITY PUBLIC CORPORATION OSAKA
    Inventors: Akitoshi Hayashi, Masahiro Tatsumisago, Atsushi Sakuda
  • Publication number: 20210296707
    Abstract: A solid electrolyte for an all-solid-state sodium battery, represented by formula: Na3?xSb1?x?xS4, wherein ? is selected from elements that provide Na3?xSb1?x?xS4 exhibiting a higher ionic conductivity than Na3SbS4, and x is 0<x<1.
    Type: Application
    Filed: July 23, 2019
    Publication date: September 23, 2021
    Inventors: Akitoshi HAYASHI, Masahiro TATSUMISAGO, Atsushi SAKUDA
  • Publication number: 20200335815
    Abstract: A solid electrolyte for all-solid sodium battery expressed by Na3-xSbS4-xAx, wherein A is selected from F, Cl, Br, I, NO3, BH4, BF4, PF6, ClO4, BH4, CF3SO3, (CF3SO2)2N, (C2F5SO2)2N, (FSO2)2N, and [B(C2O4)2]; and x is 0<x<3.
    Type: Application
    Filed: November 5, 2018
    Publication date: October 22, 2020
    Inventors: Akitoshi HAYASHI, Masahiro TATSUMISAGO, Atsushi SAKUDA
  • Patent number: 10734634
    Abstract: A positive electrode for an all-solid secondary battery, comprising a positive electrode active material expressed by A2S.AX, wherein A is an alkali metal; and X is selected from I, Br, Cl, F, BF4, BH4, SO4, BO3, PO4, O, Se, N, P, As, Sb, PF6, AsF6, ClO4, NO3, CO3, CF3SO3, CF3COO, N(SO2F)2 and N(CF3SO2)2.
    Type: Grant
    Filed: October 20, 2015
    Date of Patent: August 4, 2020
    Assignee: JAPAN SCIENCE AND TECHNOLOGY AGENCY
    Inventors: Akitoshi Hayashi, Masahiro Tatsumisago
  • Patent number: 10439198
    Abstract: A forming solution for forming a layer containing a solid electrolyte for an all-solid-state alkali metal secondary battery comprising a component derived from A2S and MxSy (A is selected from Li and Na; M is selected from P, Si, Ge, B, Al and Ga; and x and y are a number that gives a stoichiometric ratio in accordance with a species of M) as a starting material for manufacturing the solid electrolyte, a nonpolar organic solvent and a polar organic solvent having a polarity value higher than that of the nonpolar organic solvent by 0.3 or more.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: October 8, 2019
    Assignee: JAPAN SCIENCE AND TECHNOLOGY AGENCY
    Inventors: Akitoshi Hayashi, Masahiro Tatsumisago, Kiyoharu Tadanaga
  • Publication number: 20190181446
    Abstract: An amorphous oxide-based positive electrode active material that is a production material of a positive electrode for an all-solid secondary battery, wherein the amorphous oxide-based positive electrode active material (i) comprises an alkali metal selected from Li and Na; a second metal selected from Co, Ni, Mn, Fe, Cr, V, Cu, Ti, Zn, Zr, Nb, Mo, Ru and Sn; an ionic species selected from phosphate ion, sulfate ion, borate ion, silicate ion, aluminate ion, germanate ion, nitrate ion, carbonate ion and halide ion; and an oxygen atom (except for the oxygen atom constituting the ionic species); (ii) contains at least an amorphous phase; and (iii) is a production material of a positive electrode with a thickness of 20 ?m or more.
    Type: Application
    Filed: March 8, 2017
    Publication date: June 13, 2019
    Inventors: Akitoshi HAYASHI, Masahiro TATSUMISAGO
  • Patent number: 10033067
    Abstract: An ion conductive glass ceramics having the formula Na2S—P2S5, wherein the Na2S in the ion conductive glass ceramics is contained in an amount of from 70 to 75 mole %, and wherein the ion conductive glass ceramics has a state where crystal parts are dispersed in the glass ingredient of an amorphous state and where the crystal parts contain tetragonal Na3PS4.
    Type: Grant
    Filed: April 14, 2017
    Date of Patent: July 24, 2018
    Assignee: JAPAN SCIENCE AND TECHNOLOGY AGENCY
    Inventors: Akitoshi Hayashi, Masahiro Tatsumisago
  • Publication number: 20170317337
    Abstract: A positive electrode for an all-solid secondary battery, comprising a positive electrode active material expressed by A2S.AX, wherein A is an alkali metal; and X is selected from I, Br, Cl, F, BF4, BH4, SO4, BO3, PO4, O, Se, N, P, As, Sb, PF6, AsF6, ClO4, NO3, CO3, CF3SO3, CF3COO, N(SO2F)2 and N(CF3SO2)2.
    Type: Application
    Filed: October 20, 2015
    Publication date: November 2, 2017
    Inventors: Akitoshi HAYASHI, Masahiro TATSUMISAGO
  • Publication number: 20170222259
    Abstract: An ion conductive glass ceramics having the formula Na2S—P2S5, wherein the Na2S in the ion conductive glass ceramics is contained in an amount of from 70 to 75 mole %, and wherein the ion conductive glass ceramics has a state where crystal parts are dispersed in the glass ingredient of an amorphous state and where the crystal parts contain tetragonal Na3PS4.
    Type: Application
    Filed: April 14, 2017
    Publication date: August 3, 2017
    Inventors: Akitoshi HAYASHI, Masahiro TATSUMISAGO
  • Patent number: 9640835
    Abstract: An ion conducting glass-ceramics represented by the general formula (I): Na2S-MxSy—NaSb, wherein M and N are different and selected from P, Si, Ge, B, Al and Ga; x, y, a and b are integers indicating the stoichiometric ratio depending on the species of M and N; and the content of Na2S is more than 60 mol % and less than 80 mol %.
    Type: Grant
    Filed: February 20, 2013
    Date of Patent: May 2, 2017
    Assignee: JAPAN SCIENCE AND TECHNOLOGY AGENCY
    Inventors: Akitoshi Hayashi, Masahiro Tatsumisago
  • Patent number: 9634360
    Abstract: An all-solid-state secondary cell is provided comprising at least a positive electrode, a negative electrode and a solid electrolyte layer which is positioned between the positive electrode and the negative electrode. The positive electrode contains a positive electrode active material consisting of Na2Sx (x=1 to 8) and the solid electrolyte layer contains an ion conductive glass ceramics represented by a formula (I): Na2S-MxSy, wherein M is P, Si, Ge, B or Al; x and y each is an integer giving a stoichiometric ratio depending upon the type of M; and Na2S is contained in an amount of more than 67 mole % and less than 80 mole %.
    Type: Grant
    Filed: July 25, 2012
    Date of Patent: April 25, 2017
    Assignee: Japan Science and Technology Agency
    Inventors: Akitoshi Hayashi, Masahiro Tatsumisago
  • Patent number: 9537174
    Abstract: A sulfide solid electrolyte with excellent ion conductivity and a method for producing a crystallized glass contained in the sulfide solid electrolyte. A sulfide solid electrolyte comprising a crystallized glass represented by the following chemical formula yLi2S•(100-x-y)P2S5•xP2O5, wherein 0<x<25 and 67<y<80.
    Type: Grant
    Filed: August 31, 2010
    Date of Patent: January 3, 2017
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masahiro Tatsumisago, Akitoshi Hayashi, Shigenori Hama, Koji Kawamoto, Takamasa Ohtomo
  • Publication number: 20160240838
    Abstract: A forming solution for forming a layer containing a solid electrolyte for an all-solid-state alkali metal secondary battery comprising a component derived from A2S and MxSy (A is selected from Li and Na; M is selected from P, Si, Ge, B, Al and Ga; and x and y are a number that gives a stoichiometric ratio in accordance with a species of M) as a starting material for manufacturing the solid electrolyte, a nonpolar organic solvent and a polar organic solvent having a polarity value higher than that of the nonpolar organic solvent by 0.3 or more.
    Type: Application
    Filed: September 30, 2014
    Publication date: August 18, 2016
    Inventors: Akitoshi HAYASHI, Masahiro TATSUMISAGO, Kiyoharu TADANAGA
  • Patent number: 9397365
    Abstract: A solid electrolyte material for an all solid-state lithium secondary battery represented by Li2S-MIaSb-MIIxOy, wherein MI is selected from P, Si, Ge, B and Al; “a” and “b” respectively represent numbers that give a stoichiometric ratio in accordance with the kind of MI; MII is selected from Fe, Zn and Bi; and “x” and “y” respectively represent numbers that give a stoichiometric ratio in accordance with the kind of MII.
    Type: Grant
    Filed: March 25, 2011
    Date of Patent: July 19, 2016
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masahiro Tatsumisago, Akitoshi Hayashi, Shigenori Hama, Koji Kawamoto, Takamasu Ohtomo
  • Publication number: 20150249266
    Abstract: The main object of the present invention is to provide a sulfide solid electrolyte material with less hydrogen sulfide generation amount. The present invention solves the above-mentioned problem by providing a sulfide solid electrolyte material using a raw material composition containing Li2S and sulfide of an element of the group 14 or the group 15 in the periodic table, containing substantially no cross-linking sulfur and Li2S.
    Type: Application
    Filed: May 12, 2015
    Publication date: September 3, 2015
    Inventors: Masahiro TATSUMISAGO, Akitoshi HAYASHI, Shigenori HAMA, Koji KAWAMOTO, Yasushi TSUCHIDA, Hiroshi NAGASE, Yukiyoshi UENO, Masato KAMIYA
  • Publication number: 20150244024
    Abstract: The main object of the present invention is to provide a sulfide solid electrolyte material with less hydrogen sulfide generation amount. The present invention solves the above-mentioned problem by providing a sulfide solid electrolyte material using a raw material composition containing Li2S and sulfide of an element of the group 14 or the group 15 in the periodic table, containing substantially no cross-linking sulfur and Li2S.
    Type: Application
    Filed: May 12, 2015
    Publication date: August 27, 2015
    Inventors: Masahiro TATSUMISAGO, Akitoshi HAYASHI, Shigenori HAMA, Koji KAWAMOTO, Yasushi TSUCHIDA, Hiroshi NAGASE, Yukiyoshi UENO, Masato KAMIYA
  • Patent number: 9064615
    Abstract: The main object of the present invention is to provide a sulfide solid electrolyte material with less hydrogen sulfide generation amount. The present invention solves the above-mentioned problem by providing a sulfide solid electrolyte material obtained by using a raw material composition containing Li2S and sulfide of an element of the fourteenth family or the fifteenth family, characterized by not substantially containing cross-linking sulfur and Li2S.
    Type: Grant
    Filed: February 2, 2010
    Date of Patent: June 23, 2015
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masahiro Tatsumisago, Akitoshi Hayashi, Shigenori Hama, Koji Kawamoto, Yasushi Tsuchida, Hiroshi Nagase, Yukiyoshi Ueno, Masato Kamiya
  • Patent number: 8962194
    Abstract: A lithium-ion-conducting sulfide-based crystallized glass including: lithium (Li), phosphorus (P), and sulfur (S) elements, wherein the glass has diffraction peaks at 2?=17.8±0.3 deg, 18.2±0.3 deg, 19.8±0.3 deg, 21.8±0.3 deg, 23.8±0.3 deg, 25.9±0.3 deg, 29.5±0.3 deg and 30.0±0.3 deg in X-ray diffraction (CuK?: ?=1.5418 ?).
    Type: Grant
    Filed: January 31, 2005
    Date of Patent: February 24, 2015
    Assignees: Idemitsu Kosan Co., Ltd.
    Inventors: Minoru Senga, Yoshikatsu Seino, Masahiro Tatsumisago, Akitoshi Hayashi
  • Publication number: 20150030938
    Abstract: An ion conducting glass-ceramics represented by the general formula (I): Na2S—MxSy—NaSb, wherein M and N are different and selected from P, Si, Ge, B, Al and Ga; x, y, a and b are integers indicating the stoichiometric ratio depending on the species of M and N; and the content of Na2S is more than 60 mol % and less than 80 mol %.
    Type: Application
    Filed: February 20, 2013
    Publication date: January 29, 2015
    Applicant: OSAKA PREFECTURE UNIVERSITY PUBLIC CORPORATION
    Inventors: Akitoshi HAYASHI, Masahiro TATSUMISAGO