Patents by Inventor Kento ISAI

Kento ISAI 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: 20250038202
    Abstract: A method of producing a cathode active material for a secondary battery is provided. The method includes preparing a mixture comprising a lithium source, a phosphate source, an iron source, a carbon source, a boron source comprising an oxo acid of boron, and a liquid medium; granulating the mixture to obtain a precursor; and heat-treating the precursor to obtain a lithium transition metal compound having an olivine structure, wherein in the mixture, a total molar amount of boron atoms contained in the boron source is more than 0% and less than 3% with respect to a total molar amount of iron atoms contained in the iron source as 100%.
    Type: Application
    Filed: July 25, 2024
    Publication date: January 30, 2025
    Applicant: NICHIA CORPORATION
    Inventors: Shigenobu NODA, Shunsuke SAWADA, Takashi ENOMOTO, Satoshi MATSUSHITA, Hideyuki KIRIE, Misaki KAWAI, Kento ISAI, Kenichi KOBAYASHI
  • Publication number: 20240429373
    Abstract: Provided is a cathode material that can further improve the high-rate performance in a lithium ion secondary battery. The cathode material inculeds secondary particles comprising: primary particles containing a lithium transition metal compound having an olivine structure; and carbon adhering to the surfaces of the primary particles, a plurality of which primary particles are aggregated. The content of the carbon is more than 0.5% by mass and 1.8% by mass or less with respect to the cathode material. The lithium transition metal compound has a crystallite size that is 50 nm to 70 nm. The cathode material has a specific surface area that is 14 m2/g to 45 m2/g.
    Type: Application
    Filed: October 31, 2022
    Publication date: December 26, 2024
    Applicant: NICHIA CORPORATION
    Inventors: Shigenobu NODA, Takashi ENOMOTO, Hideyuki KIRIE, Kento ISAI, Kenichi KOBAYASHI
  • Publication number: 20240021814
    Abstract: A method of manufacturing a positive electrode material for a lithium ion secondary battery includes: firing a mixture containing a lithium compound, a nickel-containing complex compound, and a molybdenum compound, to obtain first particles containing a lithium transition metal complex oxide having a composition in which a ratio of a number of moles of nickel to a total number of moles of metals other than lithium is greater than 0.6 and less than 1; and bringing the first particles into contact with a liquid medium in such that a solid content concentration of the first particles is in a range of 20 mass % to 80 mass % to remove a part of molybdenum element contained in the first particles to obtain second particles.
    Type: Application
    Filed: July 3, 2023
    Publication date: January 18, 2024
    Applicant: NICHIA CORPORATION
    Inventors: Hayato ISHIBASHI, Kenichi KOBAYASHI, Kento ISAI, Kenta KAWAI, Koichi SUMIWAKA
  • Publication number: 20230327079
    Abstract: Provided is a positive electrode active material which inhibits a decrease in discharge capacity while improving output in a low SOC region. The positive electrode active material includes: first particles that each consist of a first lithium transition metal composite oxide, the first lithium transition metal composite oxide having a layered structure and having a ratio of a number of moles of nickel to a total number of moles of metals other than lithium in a composition thereof being 0.
    Type: Application
    Filed: August 24, 2021
    Publication date: October 12, 2023
    Applicant: NICHIA CORPORATION
    Inventors: Kento ISAI, Kenichi KOBAYASHI, Kiyoto IKEBATA, Koichi SUMIWAKA, Hayato ISHIBASHI