Patents by Inventor Ryoji Kanno

Ryoji Kanno 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: 11973183
    Abstract: A sulfide solid electrolyte is capable of suppressing a decrease in Li ion conductivity due to moisture. A sulfide solid electrolyte includes a Li element, a P element, a S element and an O element, and having a granular shape, and including a crystal portion oriented along the granular shape, on an inner surface of the sulfide solid electrolyte.
    Type: Grant
    Filed: March 1, 2019
    Date of Patent: April 30, 2024
    Assignees: TOKYO INSTITUTE OF TECHNOLOGY, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Ryoji Kanno, Satoshi Hori, Shinya Shiotani
  • Publication number: 20240039042
    Abstract: Disclosed is a solid electrolyte for a solid-state battery having improved water resistance. The solid electrolyte for a solid-state battery includes a sulfide-based solid electrolyte and a LiBr-containing absorbent material, wherein the binding energy of Li1s shows a peak observed at 54.2-56.1 eV, and the binding energy of Br3d shows a peak observed at 67.5-69.5 eV, as determined by X-ray photoelectron spectroscopy (XPS).
    Type: Application
    Filed: April 29, 2022
    Publication date: February 1, 2024
    Inventors: Eiichiro NARIMATSU, Hideyuki MAEDA, Keiko MATSUBARA, Ryoji KANNO, Satoshi HORI
  • Publication number: 20230253613
    Abstract: A main object of the present disclosure is to provide a sulfide solid electrolyte with excellent water resistance. The present disclosure achieves the object by providing a sulfide solid electrolyte including a LGPS type crystal phase, and containing Li, Ge, P, and S, wherein: when an X-ray photoelectron spectroscopy measurement is conducted to a surface of the sulfide solid electrolyte, a proportion of Ge2+ with respect to total amount of Ge is 20% or more.
    Type: Application
    Filed: October 3, 2022
    Publication date: August 10, 2023
    Applicants: Tokyo Institute of Technology, Toyota Jidosha Kabushiki Kaisha
    Inventors: Ryoji KANNO, Satoshi HORI, Keiichi MINAMI, Shinya SHIOTANI
  • Publication number: 20230238574
    Abstract: Disclosed are a solid electrolyte material including a naturally abundant element as a base, having lithium ion conductivity equal or superior to those of conventional sulfide solid electrolyte materials, being relatively inexpensive, and having a crystal structure, a manufacturing method thereof, and a battery using the same. The solid electrolyte material may include a naturally abundant element as a base, have lithium ion conductivity equal or superior to those of conventional sulfide solid electrolyte materials, be relatively inexpensive, and have a crystal structure. The sulfide solid electrolyte material includes a sulfide compound represented by a formula of Li2?4x?ySi1+x?yPyS3, and x and y satisfy conditions ?0.040?x?0.095 and 0.036?y?0.192.
    Type: Application
    Filed: January 24, 2023
    Publication date: July 27, 2023
    Inventors: Yong Sub Yoon, Sasaki Yuki, Sa Heum Kim, Ryoji Kanno, Hori Satoshi
  • Patent number: 11152641
    Abstract: Provided is a sulfide solid electrolyte material which has a composition that does not contain Ge, while having a smaller Li content than conventional sulfide solid electrolyte materials, and which has both lithium ion conductivity and chemical stability at the same time. A sulfide solid electrolyte which has a crystal structure represented by composition formula (Li3.45+??4?Sn?)(Si0.36Sn0.09)(P0.55??Si?)S4 (wherein ??0.67, ??0.33 and 0.43<?+? (provided that 0.23<??0.4 when ?=0.2 and 0.13<??0.4 when ?=0.3 may be excluded)), or a crystal structure represented by composition formula Li7+?Si?P1??S6 (wherein 0.1??<0.3).
    Type: Grant
    Filed: August 23, 2017
    Date of Patent: October 19, 2021
    Assignee: Tokyo Institute of Technology
    Inventors: Ryoji Kanno, Masaaki Hirayama, Kota Suzuki, Yulong Sun, Satoshi Hori
  • Publication number: 20210242491
    Abstract: A sulfide solid electrolyte is capable of suppressing a decrease in Li ion conductivity due to moisture. A sulfide solid electrolyte includes a Li element, a P element, a S element and an O element, and having a granular shape, and including a crystal portion oriented along the granular shape, on an inner surface of the sulfide solid electrolyte.
    Type: Application
    Filed: March 1, 2019
    Publication date: August 5, 2021
    Applicants: TOKYO INSTITUTE OF TECHNOLOGY, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Ryoji KANNO, Satoshi HORI, Shinya SHIOTANI
  • Patent number: 10897059
    Abstract: The problem of the present invention is to provide a sulfide solid electrolyte material with favorable reduction resistance. The present invention solves the problem by providing a sulfide solid electrolyte material having a peak at a position of 2?=30.26°±1.00° in X-ray diffraction measurement using a CuK? ray, and having a composition of Li(4?x?4y)Si(1?x+y)P(x)S(4?2a?z)O(2a+z) (a=1?x+y, 0.65?x?0.75, ?0.025?y?0.1, ?0.2?z?0).
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: January 19, 2021
    Assignees: TOKYO INSTITUTE OF TECHNOLOGY, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Ryoji Kanno, Satoshi Hori, Yuki Kato
  • Patent number: 10741299
    Abstract: (Problem to be Solved) The present invention was made in view of the above-described problems, with an object of providing a Li—P—S-based sulfide solid electrolyte material with both excellent electrochemical stability and a high lithium ion conductivity, providing a method of producing the Li—P—S-based sulfide solid electrolyte material, and providing a lithium battery including the sulfide solid electrolyte material. (Solution) There is provided a sulfide solid electrolyte material including a Li element, a P element, and a S element and having peaks at positions of 2?=17.90±0.20, 29.0±0.50, and 29.75±0.25? in powder X-ray diffraction measurement using a Cu-K? ray having an X-ray wavelength of 1.5418 ?, in which assuming that the diffraction intensity of the peak at 2?=17.90±0.20 is IA and the diffraction intensity of the peak at 2?=18.50±0.20 is IB, a value of IB/IA is less than 0.50.
    Type: Grant
    Filed: July 15, 2016
    Date of Patent: August 11, 2020
    Assignees: Tokyo Insititute of Technology, Toyota Jidosha Kabushiki Kaisha
    Inventors: Ryoji Kanno, Satoshi Hori
  • Patent number: 10541443
    Abstract: (Problem to be Solved) A solid electrolyte material with favorable ion conductivity is demanded from the viewpoint of the higher output of a battery. The present invention was made in view of the above-described problems, with an object of providing a sulfide solid electrolyte material with favorable Li ion conductivity and providing a lithium battery including the sulfide solid electrolyte material. (Solution) There are provided: a solid electrolyte including a sulfide-based solid electrolyte represented by a composition formula: (Li2S)x(MS2)y(P2S5)z, in which M is at least one selected from the group consisting of Ge, Sb, Si, Sn, B, Al, Ga, In, Zr, V, and Nb, and 0.53?x?0.74, 0.13?y?0.37, 0.04?z?0.15, and x+y+z=1 are satisfied; and a lithium battery including the solid electrolyte.
    Type: Grant
    Filed: July 8, 2016
    Date of Patent: January 21, 2020
    Assignees: Tokyo Institute of Technology, Tokyo Jidosha Kabushiki Kaisha
    Inventors: Ryoji Kanno, Yuki Inoue
  • Patent number: 10461363
    Abstract: A sulfide solid electrolyte material has favorable ion conductivity and resistance to reduction. The sulfide solid electrolyte material includes a peak at a position of 2?=29.86°±1.00° in X-ray diffraction measurement using a CuK? ray, and a composition of Li2y+3PS4 (0.1?y?0.175).
    Type: Grant
    Filed: June 8, 2015
    Date of Patent: October 29, 2019
    Assignees: TOKYO INSTITUTE OF TECHNOLOGY, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Ryoji Kanno, Masaaki Hirayama, Kota Suzuki, Satoshi Hori, Yuki Kato
  • Patent number: 10403933
    Abstract: In order to improve the stability of an electrolyte, an object of the present disclosure is to develop, among the sulfide solid electrolytes of Li—P—S—O based containing no metal element other than lithium, a new solid electrolyte having a possibility to have high ion conductivity and a method for producing for obtaining the same easily. The present disclosure achieves the object by providing a solid electrolyte material including a sulfide composition represented by a composition formula Li4-4y-xP4+1+y-xP5+xS4-zOz (Li4-4y-xP1+yS4-zOz), wherein 0.6?x<1, 0?z?0.2, and ?0.025?y?0.1, and a method for producing the same.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: September 3, 2019
    Assignees: TOKYO INSTITUTE OF TECHNOLOGY, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Ryoji Kanno, Satoshi Hori
  • Patent number: 10396395
    Abstract: To improve the stability of an electrolyte, among the sulfide solid electrolytes of Li—P—S—X based (X is at least one of F, Cl, N and OH) containing no metal element other than lithium, a new solid electrolyte having a possibility to have high ion conductivity and a method for producing for obtaining the same easily. The disclosure achieves the object by providing a solid electrolyte material including a sulfide composition represented by a composition formula Li4?4y?x?zP4+1+y?xP5+xS4?zXz (Li4?4y?x?zP1+yS4?zXz), wherein 0.2?x<1.0, 0?z?0.2, and 0?y?0.075, and X is at least one of F, Cl, N and OH, and the solid electrolyte material has a peak at a position of 2?=17.8°±0.1°, 19.1°±0.1°, 21.7°±0.1°, 23.8°±0.1° and 30.85°±0.1° in X-ray diffraction measurement using a CuK? ray, and method for producing the same.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: August 27, 2019
    Assignees: TOKYO INSTITUTE OF TECHNOLOGY, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Ryoji Kanno, Satoshi Hori
  • Publication number: 20190237801
    Abstract: Provided is a sulfide solid electrolyte material which has a composition that does not contain Ge, while having a smaller Li content than conventional sulfide solid electrolyte materials, and which has both lithium ion conductivity and chemical stability at the same time. A sulfide solid electrolyte which has a crystal structure represented by composition formula (Li3.45+??4?Sn?)(Si0.36Sn0.09)(P0.55??Si?)S4 (wherein ??0.67, ??0.33 and 0.43<?+? (provided that 0.23<??0.4 when ?=0.2 and 0.13<??0.4 when ?=0.3 may be excluded)), or a crystal structure represented by composition formula Li7+?Si?P1??S6 (wherein 0.1??<0.3).
    Type: Application
    Filed: August 23, 2017
    Publication date: August 1, 2019
    Applicant: Tokyo Institute of Technology
    Inventors: Ryoji KANNO, Masaaki HIRAYAMA, Kota SUZUKI, Yulong SUN, Satoshi HORI
  • Patent number: 10355308
    Abstract: The present invention aims to provide a sulfide solid electrolyte material with favorable ion conductivity, in which charge and discharge efficiency may be inhibited from decreasing. The object is attained by providing a sulfide solid electrolyte material, including: a Li element; a P element; and a S element, characterized in that the material has a peak at a position of 2?=30.21°±0.50° in X-ray diffraction measurement using a CuK? ray, and the sulfide solid electrolyte material does not substantially include a metallic element belonging to the third group to the sixteenth group.
    Type: Grant
    Filed: May 29, 2014
    Date of Patent: July 16, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Ryoji Kanno, Masaaki Hirayama, Yuki Kato, Takamasa Ohtomo, Hisatsugu Yamasaki
  • Publication number: 20190074541
    Abstract: To provide a sulfide solid electrolyte material which does not include Ge and which has excellent electrochemical stability and high lithium ion conductivity. A sulfide solid electrolyte, including a sulfide-based solid electrolyte represented by the composition formula: Li4-4z-x[SnySi1-y]1+z-xPxS4 (where 0.5?x?0.6, y=0.2, and 0?z??0.2), wherein the sulfide solid electrolyte has a peak at position 2?=29.58°±0.50° in X-ray diffraction measurement using CuK? radiation and does not have a peak at position 2?=27.33°±0.50° in X-ray diffraction measurement using CuK? radiation, or when the sulfide solid electrolyte has a peak at the position 2?=27.33°±0.50°, the value of IB/IA is less than 0.50 (where IA is the diffraction intensity of the 2?=29.58°±0.50° peak and IB is the diffraction intensity of the 2?=27.33°±0.50° peak).
    Type: Application
    Filed: March 10, 2017
    Publication date: March 7, 2019
    Applicant: Tokyo Institute of Technology
    Inventors: Ryoji Kanno, Masaaki HIRAYAMA, Kota SUZUKI, Yulong SUN
  • Publication number: 20180287204
    Abstract: To improve the stability of an electrolyte, among the sulfide solid electrolytes of Li—P—S—X based (X is at least one of F, Cl, N and OH) containing no metal element other than lithium, a new solid electrolyte having a possibility to have high ion conductivity and a method for producing for obtaining the same easily. The disclosure achieves the object by providing a solid electrolyte material including a sulfide composition represented by a composition formula Li4?4y?x?zP4+1+y?xP5+xS4?zXz (Li4?4y?x?zP1+yS4?zXz), wherein 0.2?x<1.0, 0?z?0.2, and 0?y?0.075, and X is at least one of F, Cl, N and OH, and the solid electrolyte material has a peak at a position of 2?=17.8°±0.1°, 19.1°±0.1°, 21.7°±0.1°, 23.8°±0.1° and 30.85°±0.1° in X-ray diffraction measurement using a CuK? ray, and method for producing the same.
    Type: Application
    Filed: March 27, 2018
    Publication date: October 4, 2018
    Applicants: TOKYO INSTITUTE OF TECHNOLOGY, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Ryoji KANNO, Satoshi HORI
  • Publication number: 20180287205
    Abstract: In order to improve the stability of an electrolyte, an object of the present disclosure is to develop, among the sulfide solid electrolytes of Li—P—S—O based containing no metal element other than lithium, a new solid electrolyte having a possibility to have high ion conductivity and a method for producing for obtaining the same easily. The present disclosure achieves the object by providing a solid electrolyte material including a sulfide composition represented by a composition formula Li4-4y-xP4+1+y-xP5+xS4-zOz (Li4-4y-xP1+yS4-zOz), wherein 0.6?x<1, 0?z?0.2, and ?0.025?y?0.1, and a method for producing the same.
    Type: Application
    Filed: March 28, 2018
    Publication date: October 4, 2018
    Applicants: TOKYO INSTITUTE OF TECHNOLOGY, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Ryoji KANNO, Satoshi HORI
  • Publication number: 20180226171
    Abstract: (Problem to be Solved) The present invention was made in view of the above-described problems, with an object of providing a Li—P—S-based sulfide solid electrolyte material with both excellent electrochemical stability and a high lithium ion conductivity, providing a method of producing the Li—P—S-based sulfide solid electrolyte material, and providing a lithium battery including the sulfide solid electrolyte material. (Solution) There is provided a sulfide solid electrolyte material including a Li element, a P element, and a S element and having peaks at positions of 2?=17.90±0.20, 29.0±0.50, and 29.75±0.25? in powder X-ray diffraction measurement using a Cu-K?ray having an X-ray wavelength of 1.5418 ?, in which assuming that the diffraction intensity of the peak at 2?=17.90±0.20 is IA and the diffraction intensity of the peak at 2?=18.50±0.20 is IB, a value of IB/IA is less than 0.50.
    Type: Application
    Filed: July 15, 2016
    Publication date: August 9, 2018
    Applicants: TOKYO INSTITUTE OF TECHNOLOGY, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Ryoji KANNO, Satoshi HORI
  • Patent number: 10033065
    Abstract: A main object of the present invention is to provide a sulfide solid electrolyte material having favorable ion conductivity and low reduction potential. The present invention solves the above-mentioned problem by providing a sulfide solid electrolyte material including an M1 element (such as a Li element), an M2 element (such as a Ge element, a Si element and a P element) and a S element, wherein the material has a peak at a position of 2?=29.58°±0.50° in X-ray diffraction measurement using a CuK? line; and when a diffraction intensity at the peak of 2?=29.58°±0.50° is regarded as IA and a diffraction intensity at a peak of 2?=27.33°±0.50° is regarded as IB, a value of IB/IA is less than 0.50, and M2 contains at least P and Si.
    Type: Grant
    Filed: February 5, 2013
    Date of Patent: July 24, 2018
    Assignees: TOKYO INSTITUTE OF TECHNOLOGY, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Ryoji Kanno, Masaaki Hirayama, Yuki Kato, Takamasa Otomo, Mitsuru Sakano
  • Publication number: 20180205116
    Abstract: (Problem to be Solved) A solid electrolyte material with favorable ion conductivity is demanded from the viewpoint of the higher output of a battery. The present invention was made in view of the above-described problems, with an object of providing a sulfide solid electrolyte material with favorable Li ion conductivity and providing a lithium battery including the sulfide solid electrolyte material. (Solution) There are provided: a solid electrolyte including a sulfide-based solid electrolyte represented by a composition formula: (Li2S)x(MS2)y(P2S5)z, in which M is at least one selected from the group consisting of Ge, Sb, Si, Sn, B, Al, Ga, In, Zr, V, and Nb, and 0.53?x?0.74, 0.13?y?0.37, 0.04?z?0.15, and x+y+z=1 are satisfied; and a lithium battery including the solid electrolyte.
    Type: Application
    Filed: July 8, 2016
    Publication date: July 19, 2018
    Applicants: TOKYO INSTITUTE OF TECHNOLOGY, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Ryoji KANNO, Yuki INOUE