Patents by Inventor Shintaro Aoyagi

Shintaro Aoyagi 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: 20210288328
    Abstract: To provide an electrode for a lithium ion secondary battery being an electrode for obtaining a lithium ion secondary battery including a foamed metal as a current collector and having a high energy density, and further capable of improving durability and input/output characteristics (output density), and a lithium ion secondary battery using the electrode for a lithium ion secondary battery. A porous coating layer is disposed on an electrode layer of the electrode for a lithium ion secondary battery using a current collector made of a foamed metal, an electrolytic solution extruded from the electrode layer due to expansion of a negative electrode active material can be absorbed and trapped in the coating layer.
    Type: Application
    Filed: March 8, 2021
    Publication date: September 16, 2021
    Inventors: Kiyoshi TANAAMI, Yuji ISOGAI, Makiko TAKAHASHI, Shintaro AOYAGI
  • Publication number: 20210288325
    Abstract: An object is to provide a non-aqueous electrolyte secondary battery negative electrode which can improve a battery life as compared with a conventional one, a non-aqueous electrolyte secondary battery including it and a method for manufacturing it. A non-aqueous electrolyte secondary battery negative electrode includes: a collector; and a negative electrode layer formed on the collector, the negative electrode layer includes a negative electrode active material, a conductivity aid, a binder and a skeleton-forming agent including a silicate having a siloxane bond or a phosphate having a phosphate bond and the skeleton-forming agent is arranged on at least the interface of the negative electrode layer with the collector.
    Type: Application
    Filed: March 10, 2021
    Publication date: September 16, 2021
    Inventors: Makiko Takahashi, Kiyoshi Tanaami, Tomohiro Kinoshita, Shintaro Aoyagi, Takashi Mukai, Yuta Ikeuchi, Taichi Sakamoto, Naoto Yamashita
  • Publication number: 20210288323
    Abstract: An object is to provide a non-aqueous electrolyte secondary battery negative electrode material which can improve a battery life as compared with a conventional one, a non-aqueous electrolyte secondary battery negative electrode including such a negative electrode material and a non-aqueous electrolyte secondary battery including such a negative electrode. A non-aqueous electrolyte secondary battery negative electrode material that includes a negative electrode active material formed of a silicon-based material a skeleton-forming agent including a silicate having a siloxane bond and an interface layer formed in an interface between the negative electrode active material and the skeleton-forming agent and formed of an inorganic material, a non-aqueous electrolyte secondary battery negative electrode including it and a non-aqueous electrolyte secondary battery are provided.
    Type: Application
    Filed: March 9, 2021
    Publication date: September 16, 2021
    Inventors: Makiko TAKAHASHI, Tomohiro KINOSHITA, Kiyoshi TANAAMI, Shintaro AOYAGI, Takashi MUKAI, Yuta IKEUCHI, Taichi SAKAMOTO, Naoto YAMASHI TA
  • Publication number: 20210257627
    Abstract: Provided is an electrode including a metal foam as a current collector for obtaining a lithium-ion secondary battery having a high energy density. More particularly, provided is a lithium-ion secondary battery electrode that achieves improved input/output properties (power density) and improved durability, and a lithium-ion secondary battery including the lithium-ion secondary battery electrode. An electrode is formed by providing, in an electrode layer, a region having an excessive amount of an electrolytic solution by forming a region where a current collector made of a metal foam contains no electrode material mixture.
    Type: Application
    Filed: February 4, 2021
    Publication date: August 19, 2021
    Inventors: Kiyoshi TANAAMI, Yuji ISOGAI, Makiko TAKAHASHI, Shintaro AOYAGI
  • Publication number: 20210257622
    Abstract: Provided are an electrode for lithium ion secondary batteries which is an electrode for obtaining a lithium ion secondary batteries having high energy density with foam metal as the collector, and further being able to improve durability and input/output characteristics (output density), as well as a lithium ion secondary battery made using this electrode for lithium ion secondary batteries. The electrode layer of the electrode for lithium ion secondary batteries using a collector consisting of foam metal is configured by dividing into a plurality of electrode divided parts, whereby the migration distance of electrons and migration distance of ions in each of the electrode divided parts is shortened.
    Type: Application
    Filed: February 1, 2021
    Publication date: August 19, 2021
    Inventors: Kiyoshi TANAAMI, Yuji ISOGAI, Makiko TAKAHASHI, Shintaro AOYAGI
  • Publication number: 20210119202
    Abstract: Provided is a lithium ion secondary battery electrode allowing excellent charge-and-discharge cycle characteristics to be obtained when used in a lithium ion secondary battery. The lithium ion secondary battery electrode includes a current collector composed of a metal porous body having a three-dimensional network structure in which columnar skeletons are three-dimensionally connected, a first active material held on one side of the current collector, and a second active material held on the other side of the current collector.
    Type: Application
    Filed: May 8, 2019
    Publication date: April 22, 2021
    Applicants: HONDA MOTOR CO., LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Kiyoshi Tanaami, Akihisa Tanaka, Shintaro Aoyagi, Kazuki Okuno, Akihisa Hosoe, Kikuo Senoo, Hiroshi Takebayashi
  • Publication number: 20210111398
    Abstract: To provide an electrode for lithium ion secondary batteries, and a lithium ion secondary battery made using this electrode for lithium ion secondary batteries, which can suppress an increase in electron resistance of a current collector area, and improve heat dissipation, in an electrode for lithium ion secondary batteries establishing a foam metal body as the collector. In the electrode for lithium ion secondary batteries made using a foam porous body consisting of metal as a current collector, the electrode shape is rectangular, and a current collector region is made to span at least two adjacent sides.
    Type: Application
    Filed: October 15, 2020
    Publication date: April 15, 2021
    Inventors: Kiyoshi TANAAMI, Yuji ISOGAI, Shintaro AOYAGI, Hideki SAKAI, Kazuki OKUNO, Akihisa HOSOE, Kikuo SENOO, Hiroshi TAKEBAYASHI
  • Publication number: 20210111411
    Abstract: To provide an electrode for lithium ion secondary batteries, and a lithium ion secondary battery made using this electrode for lithium ion secondary batteries, which can sufficiently secure electron conductivity between a foam metal body and an electrode active material in an electrode for lithium ion secondary batteries which establish a foam metal body as the collector, reduce the resistance of a lithium ion secondary batter, and improve the durability. A carbon layer consisting of carbon material is disposed on a surface of a foam porous body consisting of metal, and used as a collector. More specifically, an electrode for lithium ion secondary batteries includes a collector, and an electrode mixture filled into the collector, in which the collector is made to have a carbon layer consisting of carbon material on a surface of a foam porous body consisting of metal.
    Type: Application
    Filed: October 13, 2020
    Publication date: April 15, 2021
    Inventors: Kiyoshi TANAAMI, Yuji ISOGAI, Shintaro AOYAGI, Hideki SAKAI, Kazuki OKUNO, Akihisa HOSOE, Kikuo SENOO, Hiroshi TAKEBAYASHI
  • Publication number: 20210075020
    Abstract: In a lithium ion secondary battery (1), a positive electrode (2) and a negative electrode (3) are alternately adjacent to each other via separators (4) and (5). The positive electrode (2) includes a positive electrode current collector composed of a metal porous body, a first positive electrode active material (21) held on one side of the positive electrode current collector, and a second positive electrode active material (22) held on the other side. The negative electrode (3) includes a negative electrode current collector composed of a metal porous body, a first negative electrode active material (31) held on one side of the negative electrode current collector, and a second negative electrode active material (32) held on the other side. The first positive electrode active material (21) faces the first negative electrode active material (31), and the positive electrode active material (22) faces the second negative electrode active material (32).
    Type: Application
    Filed: May 9, 2019
    Publication date: March 11, 2021
    Applicants: HONDA MOTOR CO., LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Kiyoshi Tanaami, Akihisa Tanaka, Shintaro Aoyagi, Kazuki Okuno, Akihisa Hosoe, Kikuo Senoo, Hiroshi Takebayashi
  • Patent number: 9466835
    Abstract: A cathode active material is provided which has a charge and discharge capacity larger than that of FeF3 when used in a non-aqueous electrolyte secondary battery. The cathode active material for use in secondary batteries with a non-aqueous electrolyte includes an amorphous metal fluoride represented by a general formula Fe(1-x-ny)NaxMyF(3-2(x+ny)), wherein M is a metal element selected from a group consisting of Co, Ni, Cu, Mg, Al, Zn, and Sn, n represents an oxidation number of the metal element M, 0<x?0.4, and 0?y?0.1.
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: October 11, 2016
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Shintaro Aoyagi, Yuji Isogai, Akihiro Yoshizawa
  • Patent number: 9362561
    Abstract: Provided is a positive electrode material for a non-aqueous electrolyte secondary battery, having an energy density and a power density higher than those of a positive electrode material for a non-aqueous electrolyte secondary battery employing only iron fluoride as the positive electrode active material. The positive electrode material for a non-aqueous electrolyte secondary battery is characteristic in including a first positive electrode active material represented by a general formula: Fe(1?x?2y)NaxCoyF3?2(x+2y) (0<x?0.4, 0<y?0.1) and a second positive electrode active material composed of LiFePO4 having a surface coated with carbon.
    Type: Grant
    Filed: March 17, 2015
    Date of Patent: June 7, 2016
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Shintaro Aoyagi, Yuji Isogai, Akihiro Yoshizawa
  • Patent number: 9236605
    Abstract: Provided is a positive electrode active material capable of obtaining high capacity density and also capable of obtaining sufficient charge-discharge characteristics in a region which involves high current density, when the positive electrode active material is used in a non-aqueous electrolyte secondary battery. The positive electrode active material for the non-aqueous electrolyte secondary battery includes FeF3 in which at least a part of a surface thereof is coated with an electroconductive metal oxide.
    Type: Grant
    Filed: September 12, 2013
    Date of Patent: January 12, 2016
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Kaoru Omichi, Yuji Isogai, Shintaro Aoyagi
  • Publication number: 20150270546
    Abstract: Provided is a positive electrode material for a non-aqueous electrolyte secondary battery, having an energy density and a power density higher than those of a positive electrode material for a non-aqueous electrolyte secondary battery employing only iron fluoride as the positive electrode active material. The positive electrode material for a non-aqueous electrolyte secondary battery is characteristic in including a first positive electrode active material represented by a general formula: Fe(1-x-2y)NaxCoyF3-2(x+2y) (0<x?0.4, 0<y?0.1) and a second positive electrode active material composed of LiFePO4 having a surface coated with carbon.
    Type: Application
    Filed: March 17, 2015
    Publication date: September 24, 2015
    Inventors: Shintaro Aoyagi, Yuji Isogai, Akihiro Yoshizawa
  • Publication number: 20150263338
    Abstract: There is provided a cathode material capable of reducing the overvoltage in the charge and discharge time and attaining an excellent energy efficiency when the cathode material is used for a cathode of a non-aqueous electrolyte secondary battery. The cathode material is used for a cathode of a secondary battery comprising a non-aqueous electrolyte, and contains FeF3 and Li4Ti5O12 as cathode active materials.
    Type: Application
    Filed: March 5, 2015
    Publication date: September 17, 2015
    Inventors: Akihiro Yoshizawa, Yuji Isogai, Shintaro Aoyagi
  • Patent number: 9136032
    Abstract: Provided is a cathode material capable of obtaining high energy density and superior instantaneous output characteristics in a lithium ion secondary battery. The cathode material is used in a lithium ion secondary battery (1), and includes FeF3 and LiV3O8 as a cathode active material. A mass ratio of FeF3 to LiV3O8 of the cathode material is in a range of 86:14 to 43:57. The cathode material further comprises a conductive auxiliary.
    Type: Grant
    Filed: October 14, 2013
    Date of Patent: September 15, 2015
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Yuji Isogai, Shintaro Aoyagi, Kaoru Omichi
  • Publication number: 20150236348
    Abstract: A cathode active material is provided which has a charge and discharge capacity larger than that of FeF3 when used in a non-aqueous electrolyte secondary battery. The cathode active material for use in secondary batteries with a non-aqueous electrolyte includes an amorphous metal fluoride represented by a general formula Fe(1?x?ny)NaxMyF(3?2(x+ny)), wherein M is a metal element selected from a group consisting of Co, Ni, Cu, Mg, Al, Zn, and Sn, n represents an oxidation number of the metal element M, 0<x?0.4, and 0?y?0.1.
    Type: Application
    Filed: February 13, 2015
    Publication date: August 20, 2015
    Inventors: Shintaro Aoyagi, Yuji Isogai, Akihiro Yoshizawa
  • Publication number: 20140103263
    Abstract: Provided is a cathode material capable of obtaining high energy density and superior instantaneous output characteristics in a lithium ion secondary battery. The cathode material is used in a lithium ion secondary battery (1), and includes FeF3 and LiV3O8 as a cathode active material. A mass ratio of FeF3 to LiV3O8 of the cathode material is in a range of 86:14 to 43:57. The cathode material further comprises a conductive auxiliary.
    Type: Application
    Filed: October 14, 2013
    Publication date: April 17, 2014
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Yuji Isogai, Shintaro Aoyagi, Kaoru Omichi
  • Publication number: 20140079998
    Abstract: Provided is a positive electrode active material capable of obtaining high capacity density and also capable of obtaining sufficient charge-discharge characteristics in a region which involves high current density, when the positive electrode active material is used in a non-aqueous electrolyte secondary battery. The positive electrode active material for the non-aqueous electrolyte secondary battery includes FeF3 in which at least a part of a surface thereof is coated with an electroconductive metal oxide.
    Type: Application
    Filed: September 12, 2013
    Publication date: March 20, 2014
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Kaoru Omichi, Yuji Isogai, Shintaro Aoyagi
  • Publication number: 20140079999
    Abstract: The present invention provides a cathode material that can achieve a high energy density and excellent instantaneous output characteristics in lithium ion secondary batteries. The cathode material is used in a lithium ion secondary battery 1, and contains FeF3 and carbon-coated LiFePO4 as cathode active materials.
    Type: Application
    Filed: September 18, 2013
    Publication date: March 20, 2014
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Shintaro Aoyagi, Yuji Isogai, Kaoru Omichi