Patents by Inventor Sota SHIBAHARA

Sota SHIBAHARA 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).

  • Patent number: 11664502
    Abstract: To provide an electrode for a non-aqueous electrolyte secondary battery which retains the shape while retaining a discharge capacity at a high rate. An electrode for a non-aqueous electrolyte secondary battery has a current collector and an electrode active material layer arranged on a surface of the current collector, and is used for a non-aqueous electrolyte secondary battery having a liquid volume coefficient of 1.4 to 2.0, in which the electrode active material layer includes an electrode active material and a binder including polyvinylidene fluoride (PVdF), and the polyvinylidene fluoride (PVdF) is in a non-crystallized state and is included in the range of 0.5 to 3.3% by volume with respect to the total volume of the electrode in the electrode active material layer.
    Type: Grant
    Filed: October 10, 2018
    Date of Patent: May 30, 2023
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Takeshi Nakano, Hiroyuki Tanaka, Takamasa Nakagawa, Sota Shibahara, Kenichiro Enoki, Yoshihiro Ikeda, Naoki Maeo, Shogo Isomura
  • Publication number: 20200358099
    Abstract: To provide an electrode for a non-aqueous electrolyte secondary battery, having excellent shape retention of an electrode active material layer and exhibiting high cycle durability. An electrode for a non-aqueous electrolyte secondary battery has a current collector and an electrode active material layer arranged on a surface of the current collector, and is used for a non-aqueous electrolyte secondary battery having a liquid volume coefficient of 1.4 or more, in which the electrode active material layer includes an electrode active material and polyvinylidene fluoride (PVdF), and the polyvinylidene fluoride (PVdF) binds the electrode active material in a fibrous form in the electrode active material layer.
    Type: Application
    Filed: October 10, 2018
    Publication date: November 12, 2020
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Takeshi NAKANO, Hiroyuki TANAKA, Takamasa NAKAGAWA, Sota SHIBAHARA, Kenichi KAWAKITA
  • Publication number: 20200295346
    Abstract: To provide a means capable of suppressing the generation of cracks in an electrode active material layer in the production of an electrode for a non-aqueous electrolyte secondary battery. Provided is a method for producing an electrode for use in a non-aqueous electrolyte secondary battery, including a current collector and an electrode active material layer including an electrode active material, arranged on a surface of the current collector, and a dispersion is by mixing the electrode active material, a binder formed of polyvinylidene fluoride (PVdF), a first solvent in which the polyvinylidene fluoride (PVdF) is not dissolved, and a second solvent in which the polyvinylidene fluoride (PVdF) can be dissolved. Then, an electrode active material slurry is prepared by removing the second solvent from the obtained dispersion. Then, a coating film is formed by coating the obtained electrode active material slurry on the surface of the current collector, thereby producing an electrode.
    Type: Application
    Filed: October 10, 2018
    Publication date: September 17, 2020
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Hiroyuki TANAKA, Takeshi NAKANO, Sota SHIBAHARA, Takamasa NAKAGAWA, Kenichiro ENOKI, Yoshihiro IKEDA, Naoki MAEO, Shogo ISOMURA
  • Publication number: 20200274164
    Abstract: To provide an electrode for a non-aqueous electrolyte secondary battery which retains the shape while retaining a discharge capacity at a high rate. An electrode for a non-aqueous electrolyte secondary battery has a current collector and an electrode active material layer arranged on a surface of the current collector, and is used for a non-aqueous electrolyte secondary battery having a liquid volume coefficient of 1.4 to 2.0, in which the electrode active material layer includes an electrode active material and a binder including polyvinylidene fluoride (PVdF), and the polyvinylidene fluoride (PVdF) is in a non-crystallized state and is included in the range of 0.5 to 3.3% by volume with respect to the total volume of the electrode in the electrode active material layer.
    Type: Application
    Filed: October 10, 2018
    Publication date: August 27, 2020
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Takeshi NAKANO, Hiroyuki TANAKA, Takamasa NAKAGAWA, Sota SHIBAHARA, Kenichiro ENOKI, Yoshihiro IKEDA, Naoki MAEO, Shogo ISOMURA