Patents by Inventor Shohei Unoki

Shohei Unoki 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: 20240332677
    Abstract: An air battery module includes a plurality of air battery cells connected in series. Each air battery cell includes a negative electrode current collector, a negative electrode plate, a separator, a positive electrode current collector supporting an air electrode, a water-repellent film, and a flow channel plate. The positive electrode current collector includes a conductive frame and two conductive connection parts formed integrally with the frame and extending in a direction away from the negative electrode current collector. The two connection parts are formed so as to face each other with the air electrode interposed therebetween. When the positive electrode side of a battery cell is connected to the negative electrode side of an adjacent battery cell, the connection part of the battery cell is contact with the negative electrode current collector of the adjacent battery cell and electrically connected thereto.
    Type: Application
    Filed: March 29, 2024
    Publication date: October 3, 2024
    Inventors: Yoshiyuki Ogihara, Takeshi Kajiwara, Shohei Unoki, Minori Nishi
  • Patent number: 11811069
    Abstract: A battery includes: an electrode group including an air electrode and a negative electrode that are stacked with a separator interposed therebetween; and a container housing the electrode group together with an alkaline electrolyte liquid. The air electrode includes a catalyst for an air electrode. This catalyst for an air electrode is a catalyst for an air electrode including an oxide containing at least bismuth (Bi), ruthenium (Ru), sodium (Na), and oxygen, and Na/(Ru+Bi+Na) representing an atomic ratio of the sodium to a sum of the bismuth, the ruthenium, and the sodium is 0.126 or more and 0.145 or less.
    Type: Grant
    Filed: April 21, 2022
    Date of Patent: November 7, 2023
    Assignee: FDK CORPORATION
    Inventors: Minori Inoue, Takeshi Kajiwara, Shohei Unoki, Takahiro Endo, Shigekazu Yasuoka, Yoshikatsu Watanabe
  • Publication number: 20230049091
    Abstract: A battery includes: an electrode group including an air electrode and a negative electrode that are stacked with a separator interposed therebetween; and a container housing the electrode group together with an alkaline electrolyte liquid. The air electrode includes a catalyst for an air secondary battery, and this catalyst for an air secondary battery includes a pyrochlore bismuth-ruthenium composite oxide having a full width at half maximum of a diffraction peak corresponding to a (222) face obtained by a powder X-ray diffraction method using CuK? rays as X-rays, of 0.350 deg or larger and 0.713 deg or smaller.
    Type: Application
    Filed: July 19, 2022
    Publication date: February 16, 2023
    Inventors: Shohei Unoki, Takeshi Kajiwara, Minori Inoue, Takahiro Endo, Shigekazu Yasuoka, Yoshikatsu Watanabe
  • Publication number: 20220359884
    Abstract: A battery includes: an electrode group including an air electrode and a negative electrode that are stacked with a separator interposed therebetween; and a container housing the electrode group together with an alkaline electrolyte liquid. The air electrode includes a catalyst for an air electrode. This catalyst for an air electrode is a catalyst for an air electrode including an oxide containing at least bismuth (Bi), ruthenium (Ru), sodium (Na), and oxygen, and Na/(Ru+Bi+Na) representing an atomic ratio of the sodium to a sum of the bismuth, the ruthenium, and the sodium is 0.126 or more and 0.145 or less.
    Type: Application
    Filed: April 21, 2022
    Publication date: November 10, 2022
    Inventors: Minori Inoue, Takeshi Kajiwara, Shohei Unoki, Takahiro Endo, Shigekazu Yasuoka, Yoshikatsu Watanabe
  • Patent number: 11495804
    Abstract: An air electrode catalyst for an air secondary battery includes a pyrochlore-type composite oxide having two or more crystal structures having a different amount of oxygen. A battery, according to some embodiments, includes an electrode group including an air electrode and a negative electrode stacked with a separator therebetween, and a container accommodating the electrode group along with an alkali electrolyte solution, wherein the air electrode includes the air electrode catalyst. The air electrode catalyst may have a pyrochlore-type composite oxide having a crystal structure represented by Bi2Ru2O6.92 and a crystal structure represented by Bi2Ru2O7.33.
    Type: Grant
    Filed: February 4, 2020
    Date of Patent: November 8, 2022
    Assignees: FDK CORPORATION, JAPAN METALS AND CHEMICALS CO., LTD.
    Inventors: Shohei Unoki, Takeshi Kajiwara, Takahiro Endo, Shigekazu Yasuoka, Yoshikatsu Watanabe
  • Patent number: 11355751
    Abstract: A battery includes an electrode group including an air electrode and a negative electrode stacked with a separator therebetween, and a battery case accommodating the electrode group along with an alkali electrolyte solution, wherein the air electrode includes an air electrode mixture containing a pyrochlore-type composite oxide and a manganese oxide, and the pyrochlore-type composite oxide is a bismuth-ruthenium oxide.
    Type: Grant
    Filed: October 28, 2019
    Date of Patent: June 7, 2022
    Assignee: FDK CORPORATION
    Inventors: Takeshi Kajiwara, Shohei Unoki, Takahiro Endo
  • Patent number: 11322751
    Abstract: A battery includes an electrode group including an air electrode and a negative electrode stacked with a separator therebetween, and an accommodating bag accommodating the electrode group along with an alkali electrolyte solution. The air electrode includes a catalyst for an air secondary battery. This catalyst for an air secondary battery is produced by a method for producing a catalyst for an air secondary battery, the method including a precursor preparation step of preparing a bismuth-ruthenium oxide precursor, a calcination step of calcining the bismuth-ruthenium oxide precursor obtained in this precursor preparation step to form a bismuth-ruthenium oxide, and a nitric acid treatment step of immersing the bismuth-ruthenium oxide obtained by this calcination step in a nitric acid aqueous solution.
    Type: Grant
    Filed: March 25, 2019
    Date of Patent: May 3, 2022
    Assignee: FDK CORPORATION
    Inventors: Shohei Unoki, Takeshi Kajiwara, Takahiro Endo, Shigekazu Yasuoka, Yoshikatsu Watanabe
  • Publication number: 20210043945
    Abstract: A battery includes an electrode group including an air electrode and a negative electrode stacked with a separator therebetween, and an accommodating bag accommodating the electrode group along with an alkali electrolyte solution. The air electrode includes a catalyst for an air secondary battery. This catalyst for an air secondary battery is produced by a method for producing a catalyst for an air secondary battery, the method including a precursor preparation step of preparing a bismuth-ruthenium oxide precursor, a calcination step of calcining the bismuth-ruthenium oxide precursor obtained in this precursor preparation step to form a bismuth-ruthenium oxide, and a nitric acid treatment step of immersing the bismuth-ruthenium oxide obtained by this calcination step in a nitric acid aqueous solution.
    Type: Application
    Filed: March 25, 2019
    Publication date: February 11, 2021
    Inventors: Shohei Unoki, Takeshi Kajiwara, Takahiro Endo, Shigekazu Yasuoka, Yoshikatsu Watanabe
  • Publication number: 20200251746
    Abstract: An air electrode catalyst for an air secondary battery includes a pyrochlore-type composite oxide having two or more crystal structures having a different amount of oxygen. A battery, according to some embodiments, includes an electrode group including an air electrode and a negative electrode stacked with a separator therebetween, and a container accommodating the electrode group along with an alkali electrolyte solution, wherein the air electrode includes the air electrode catalyst. The air electrode catalyst may have a pyrochlore-type composite oxide having a crystal structure represented by Bi2Ru2O6.92 and a crystal structure represented by Bi2Ru2O7.33.
    Type: Application
    Filed: February 4, 2020
    Publication date: August 6, 2020
    Inventors: Shohei Unoki, Takeshi Kajiwara, Takahiro Endo, Shigekazu Yasuoka, Yoshikatsu Watanabe
  • Publication number: 20200144616
    Abstract: A battery includes an electrode group including an air electrode and a negative electrode stacked with a separator therebetween, and a battery case accommodating the electrode group along with an alkali electrolyte solution, wherein the air electrode includes an air electrode mixture containing a pyrochlore-type composite oxide and a manganese oxide, and the pyrochlore-type composite oxide is a bismuth-ruthenium oxide.
    Type: Application
    Filed: October 28, 2019
    Publication date: May 7, 2020
    Inventors: Takeshi Kajiwara, Shohei Unoki, Takahiro Endo