Patents by Inventor Takeru Sawai

Takeru Sawai 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).

  • POSITIVE ELECTRODE ACTIVE MATERIAL PARTICLE, MANUFACTURING METHOD OF POSITIVE ELECTRODE ACTIVE MATERIAL PARTICLE, AND LITHIUM ION SECONDARY BATTERY
    Publication number: 20240088377
    Abstract: Disclosed are positive electrode active material particles having both high-capacity and cycling properties. The positive electrode active material particles of the present disclosure have an O2-type structure, and comprise: at least one element selected from Mn, Ni and Co; Li; an element M; and O, wherein the element M is at least one selected from B, Mg, Al, K, Ca, Ti, V, Cr, Fe, Cu, Zn, Ga, Ge, Sr, Y, Zr, Nb, Mo and W, and the molar concentration of the element M in the surface layer portion of the particles is higher than the molar concentration of the element M in the central portion of the particles.
    Type: Application
    Filed: September 6, 2023
    Publication date: March 14, 2024
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yosuke Tokuda, Issei Sugiyama, Takeru Sawai