Patents by Inventor Taisuke Asano

Taisuke Asano 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: 20250105259
    Abstract: A negative electrode active material for nonaqueous electrolyte secondary batteries according to the present invention is characterized by containing composite particles that contain SiC and at least one of Si and an Si alloy, and is also characterized in that the composite particles have a crystallite diameter of 2.0 mm to 5.0 nm as calculated from the half width of the diffraction peak of the (111) plane of SiC in an XRD pattern obtained by an X-ray diffraction method.
    Type: Application
    Filed: January 17, 2023
    Publication date: March 27, 2025
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Takuya Jin, Yusuke Saito, Yosuke Sato, Taisuke Asano
  • Publication number: 20240413327
    Abstract: The disclosed negative electrode active material for a secondary battery includes silicate composite particles each including a silicate phase, and silicon particles dispersed in the silicate phase. A peak of an oxygen K-edge energy loss near edge structure (ELNES) at an interface between the silicate phase and the silicon particles is shifted to a lower energy side by 2.0 eV to 3.0 eV relative to a peak of the oxygen K-edge energy loss near edge structure in the silicate phase.
    Type: Application
    Filed: September 14, 2022
    Publication date: December 12, 2024
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Taisuke Asano, Toshiki Kamidaira, Yosuke Sato
  • Patent number: 12155061
    Abstract: A negative electrode active material for a secondary battery includes silicate composite particles each of which contain a silicate phase and silicon particles dispersed in the silicate phase, the silicate phase is an oxide phase containing Si, O, and alkali metals, and the alkali metals include at least K and Li.
    Type: Grant
    Filed: August 23, 2019
    Date of Patent: November 26, 2024
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yohei Uchiyama, Taisuke Asano, Yosuke Sato
  • Patent number: 12113216
    Abstract: A negative electrode active material for a secondary battery includes silicate composite particles each of which contain a silicate phase and silicon particles dispersed in the silicate phase, the silicate phase is an oxide phase containing Si, O, and alkali metals, and the alkali metals include at least Na and K.
    Type: Grant
    Filed: August 23, 2019
    Date of Patent: October 8, 2024
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yohei Uchiyama, Taisuke Asano, Yosuke Sato
  • Patent number: 12095076
    Abstract: A negative electrode active material for a secondary battery includes a silicate composite particle. The silicate composite particle contains silicate phases, silicon particles dispersed in the silicate phases, and a carbon phase. The silicate phases contain at least one selected from the group consisting of an alkali metal and an alkaline earth metal. At least parts of the carbon phase coat at least parts of surfaces of the silicon particles.
    Type: Grant
    Filed: December 4, 2019
    Date of Patent: September 17, 2024
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yosuke Sato, Yohei Uchiyama, Taisuke Asano
  • Publication number: 20240038974
    Abstract: Composite particles for a non-aqueous electrolyte secondary battery include a lithium zirconate phase, and a silicon phase dispersed in the lithium zirconate phase. In the composite particles, a content proportion MZr of zirconium in all elements other than oxygen is, for example, 14.6 mass % or more and 54.6 mass % or less, and a content proportion MLi of lithium in all elements other than oxygen is, for example, 0.9 mass % or more and 10.4. mass % or less.
    Type: Application
    Filed: October 8, 2021
    Publication date: February 1, 2024
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Toshiki Kamidaira, Taisuke Asano, Naoki Seki
  • Publication number: 20240021806
    Abstract: A negative electrode active material for a non-aqueous electrolyte secondary battery includes composite particles containing a lithium aluminate phase, and a silicon phase dispersed in the lithium aluminate phase.
    Type: Application
    Filed: September 22, 2021
    Publication date: January 18, 2024
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Taisuke ASANO, Toshiki KAMIDAIRA, Naoki SEKI
  • Publication number: 20230035333
    Abstract: A negative electrode active material tor a secondary battery includes a silicate composite particle including crystalline silicon particles, an amorphous phase comprising an Li element, an O element, and an Si element, and a silicon oxide phase, wherein the silicon oxide phase and the silicon particles are dispersed in the amorphous phase.
    Type: Application
    Filed: October 15, 2020
    Publication date: February 2, 2023
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Yohei Uchiyama, Yosuke Sato, Taisuke Asano, Keita Okazaki
  • Publication number: 20220263066
    Abstract: A negative electrode material for a non-aqueous electrolyte secondary battery, including a silicate phase, silicon particles dispersed in the silicate phase, and a crystal phase dispersed in the silicate phase. The silicate phase contains at least one element E1 selected from the group consisting of alkali metal elements and Group 2 elements. The crystal phase contains a rare earth element, silicon, and oxygen.
    Type: Application
    Filed: July 21, 2020
    Publication date: August 18, 2022
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Taisuke Asano, Yohei Uchiyama, Yosuke Sato
  • Publication number: 20220190314
    Abstract: A negative electrode for a non-aqueous electrolyte secondary battery includes a negative electrode mixture comprising a negative electrode active material capable of electrochemically absorbing and releasing lithium ions, a negative electrode additive, and an acrylic resin. The negative electrode active material includes a silicon containing material. The Negative electrode additive includes at least silicon dioxide and a group 2 element oxide, and the group 2 element oxide includes at least one selected from the group consisting of BeO, MgO, CaO, SrO, BaO and RaO. The acrylic resin includes at least a (meth)acrylic acid salt unit. The content of the group 2 element oxide in the negative electrode additive is less than 20 mass % relative to a total amount of the negative electrode additive.
    Type: Application
    Filed: March 11, 2020
    Publication date: June 16, 2022
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Yohei Uchiyama, Taisuke Asano, Yosuke Sato, Masahiro Soga
  • Patent number: 11271197
    Abstract: Disclosed is a negative electrode material for a non-aqueous electrolyte secondary battery, including: a lithium silicate phase; silicon particles dispersed in the lithium silicate phase; and at least one element Me dispersed in the lithium silicate phase, and selected from the group consisting of a rare-earth element and an alkaline-earth metal. The composition of the lithium silicate phase is represented, for example, by the formula: Li2zSiO2+z, and satisfies 0<z<2, and the element Me is dispersed in the lithium silicate phase, for example, as an Me oxide.
    Type: Grant
    Filed: February 16, 2018
    Date of Patent: March 8, 2022
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Taisuke Asano, Yohei Uchiyama, Taisuke Yamamoto, Tatsuya Akira, Norihisa Yamamoto, Hiroshi Minami
  • Publication number: 20220029151
    Abstract: A negative electrode active material for a secondary battery includes a silicate composite particle. The silicate composite particle contains silicate phases, silicon particles dispersed in the silicate phases, and a carbon phase. The silicate phases contain at least one selected from the group consisting of an alkali metal and an alkaline earth metal. At least parts of the carbon phase coat at least parts of surfaces of the silicon particles.
    Type: Application
    Filed: December 4, 2019
    Publication date: January 27, 2022
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Yosuke Sato, Yohei Uchiyama, Taisuke Asano
  • Publication number: 20210320299
    Abstract: A negative electrode active material for a secondary battery includes silicate composite particles each of which contain a silicate phase and silicon particles dispersed in the silicate phase, the silicate phase is an oxide phase containing Si, O, and alkali metals, and the alkali metals include at least Na and K.
    Type: Application
    Filed: August 23, 2019
    Publication date: October 14, 2021
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Yohei Uchiyama, Taisuke Asano, Yosuke Sato
  • Publication number: 20210242453
    Abstract: A negative electrode active material for a secondary battery includes silicate composite particles each of which contain a silicate phase and silicon particles dispersed in the silicate phase, the silicate phase is an oxide phase containing Si, O, and alkali metals, and the alkali metals include at least K and Li.
    Type: Application
    Filed: August 23, 2019
    Publication date: August 5, 2021
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Yohei Uchiyama, Taisuke Asano, Yosuke Sato
  • Publication number: 20200020932
    Abstract: Disclosed is a negative electrode material for a non-aqueous electrolyte secondary battery, including: a lithium silicate phase; silicon particles dispersed in the lithium silicate phase; and at least one element Me dispersed in the lithium silicate phase, and selected from the group consisting of a rare-earth element and an alkaline-earth metal. The composition of the lithium silicate phase is represented, for example, by the formula: Li2zSiO2+z, and satisfies 0<z<2, and the element Me is dispersed in the lithium silicate phase, for example, as an Me oxide.
    Type: Application
    Filed: February 16, 2018
    Publication date: January 16, 2020
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Taisuke Asano, Yohei Uchiyama, Taisuke Yamamoto, Tatsuya Akira, Norihisa Yamamoto, Hiroshi Minami