Patents by Inventor TAKANORI OMAE

TAKANORI OMAE 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: 20210193999
    Abstract: A positive electrode active material according to the present disclosure includes: a lithium composite oxide which includes Mn and at least one selected from the group consisting of F, Cl, and N, and S. The lithium composite oxide has a crystalline structure which belongs to the space group Fd-3m, and a relationship 1.40?intensity ratio IMn1/IMn2?1.90 is satisfied. The intensity ratio IMn1/IMn2 is a ratio of an intensity IMn1 to an intensity IMn2. The intensity IMn1 and the intensity IMn2 are intensities of a first proximity peak and a second proximity peak, respectively, of the Mn in a radial distribution function of the Mn included in the lithium composite oxide.
    Type: Application
    Filed: February 3, 2021
    Publication date: June 24, 2021
    Inventors: TAKANORI OMAE, RYUICHI NATSUI, ISSEI IKEUCHI, KENSUKE NAKURA
  • Publication number: 20200388823
    Abstract: A cathode active material includes a lithium composite oxide having a crystal structure which belongs to a layered structure. The lithium composite oxide has a BET specific surface area of not less than 5 m2/g and not more than 10 m2/g. The lithium composite oxide has an average particle size of not less than 3 ?m and not more than 30 ?m. The lithium composite oxide, an average crystallite size calculated by an X-ray diffraction method is not less than 150 ? and not more than 350 ?.
    Type: Application
    Filed: March 16, 2020
    Publication date: December 10, 2020
    Inventors: TAKANORI OMAE, RYUICHI NATSUI, YU OTSUKA, SHUHEI UCHIDA
  • Publication number: 20200091514
    Abstract: A positive electrode active material contains a lithium composite oxide containing fluorine and oxygen. The lithium composite oxide satisfies 1<Zs/Za<8, where Zs represents a first ratio of a molar quantity of fluorine to a total molar quantity of fluorine and oxygen in XPS of the lithium composite oxide, and Za represents a second ratio of a molar quantity of fluorine to a total molar quantity of fluorine and oxygen in an average composition of the lithium composite oxide. An XRD pattern of the lithium composite oxide includes a first maximum peak within a first range of 18° to 20° at a diffraction angle 2? and a second maximum peak within a second range of 43° to 46° at the diffraction angle 2?. The ratio I(18°-20°)/I(43°-46°) of a first integrated intensity I(18°-20°) of the first maximum peak to a second integrated intensity I(43°-46°) of the second maximum peak satisfies 0.05?I(18°-20°)/I(43°-46°)?0.90.
    Type: Application
    Filed: November 19, 2019
    Publication date: March 19, 2020
    Inventors: TAKANORI OMAE, RYUICHI NATSUI, TAKAYUKI ISHIKAWA, KENSUKE NAKURA