Patents by Inventor Keisuke Asaka

Keisuke Asaka 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: 20240204179
    Abstract: Provided is a non-aqueous electrolyte secondary battery with enhanced discharging performance. A non-aqueous electrolyte secondary battery according to one aspect of the present disclosure is provided with an electrode having: a current collector; and a mixture layer that is formed on a surface of the current collector and that contains an active material, a conducting agent, and a binding agent. The mixture layer contains a first mixture layer facing the current collector and a second mixture layer laminated on a surface of the first mixture layer. A short-circuit resistance R1 of the first mixture layer and a short-circuit resistance R2 of the second mixture layer satisfy the relationship R1<R2.
    Type: Application
    Filed: April 12, 2022
    Publication date: June 20, 2024
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Tooru Matsui, Keisuke Asaka, Hirotetsu Suzuki, Motohiro Sakata, Kensuke Nakura
  • Publication number: 20240186530
    Abstract: Provided is a nonaqueous electrolyte secondary battery having improved discharge characteristics. A nonaqueous electrolyte secondary battery according to one aspect of the present disclosure comprises an electrode including a current collector and a mixture layer that is formed on a surface of the current collector and that contains an active material. The current collector includes an electron conductive layer having a gap on the surface in contact with the mixture layer, and an electrolytic solution is present inside the electron conductive layer.
    Type: Application
    Filed: April 12, 2022
    Publication date: June 6, 2024
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Tooru Matsui, Keisuke Asaka, Hirotetsu Suzuki, Motohiro Sakata, Kensuke Nakura
  • Publication number: 20230253560
    Abstract: The positive electrode for a secondary battery includes a positive electrode mixture layer including a positive electrode active material and a conductive material; the positive electrode active material includes a lithium transition metal composite oxide including at least Ni; and the conductive material includes a carbon fiber having an average fiber diameter d of 5 ?m or more and 30 ?m or less, and an average fiber length L of 50 ?m or more and 2000 ?m or less.
    Type: Application
    Filed: June 24, 2021
    Publication date: August 10, 2023
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Keisuke Asaka, Motohiro Sakata
  • Publication number: 20230099371
    Abstract: A nonaqueous electrolyte secondary battery includes a positive electrode, a negative electrode, and a nonaqueous electrolyte, wherein the positive electrode includes a composite oxide containing lithium and a transition metal, and an additive covering at least a portion of a surface of the composite oxide. The additive includes a metal oxide and a phosphate compound, and the phosphate compound has at least one intramolecular alkenyl group.
    Type: Application
    Filed: March 23, 2021
    Publication date: March 30, 2023
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Takuji TSUJITA, Keisuke ASAKA, Motohiro SAKATA
  • Publication number: 20230078924
    Abstract: A negative electrode for a secondary battery includes a negative electrode mixture layer having a negative electrode active material, a first layer covering at least a portion of a surface of the negative electrode active material, and a second layer covering at least a portion of a surface of the first layer, wherein the first layer includes a carbon material, and the second layer includes silicone.
    Type: Application
    Filed: February 25, 2021
    Publication date: March 16, 2023
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Saifullah Badar, Takuji Tsujita, Keisuke Asaka, Hirotetsu Suzuki, Motohiro Sakata
  • Publication number: 20230059278
    Abstract: A nonaqueous electrolyte secondary battery includes a positive electrode having a positive electrode mixture layer, a negative electrode, and a nonaqueous electrolyte, wherein the positive electrode mixture layer includes a positive electrode active material and inactive particles, the positive electrode active material includes a lithium-containing composite oxide, an average particle size D1 of the positive electrode active material and an average particle size D2 of the inactive particles satisfy D1>D2, and a viscosity at 30° C. of the nonaqueous electrolyte is less than 2 mPa·s.
    Type: Application
    Filed: January 21, 2021
    Publication date: February 23, 2023
    Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Keisuke Asaka, Takuji Tsujita, Motohiro Sakata
  • Publication number: 20190088880
    Abstract: A photovoltaic element includes at least a cathode, a photoelectric conversion layer, a hole extraction layer, and an anode in this order, the hole extraction layer containing a hole transporting material and a compound represented by formula (1) or (2): wherein, in formula (1), R1 represents an alkyl group having 8 to 14 carbon atoms or an alkanoyl group having 8 to 14 carbon atoms, and n represents a natural number of 1 to 9; and in formula (2), R2 represents an alkenyl group, and m represents a natural number.
    Type: Application
    Filed: March 13, 2017
    Publication date: March 21, 2019
    Inventors: Keisuke Asaka, Shuhei Yamamoto, Daisuke Kitazawa