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    ELECTROCHEMICAL DEVICE
    1.
    发明公开
    ELECTROCHEMICAL DEVICE 审中-公开

    公开(公告)号：US20240282912A1

    公开(公告)日：2024-08-22

    申请号：US18548892

    申请日：2022-03-17

    Applicant: Panasonic Intellectual Property Management Co., Ltd.

    Inventor： NOBUHIRO SHIMAMURA ,  KENICHI NAGAMITSU

    IPC: H01M4/133 ,  H01M4/02 ,  H01M4/587 ,  H01M4/62 ,  H01M10/0525

    CPC classification number: H01M4/133 ,  H01M4/587 ,  H01M4/625 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/027

    Abstract: The present disclosure provides a high-output electrochemical device with a low internal resistance, the electrochemical device including a positive electrode, a negative electrode, and an electrolyte having lithium ion conductivity. The negative electrode includes a negative current collector and a negative electrode mixture layer supported on the negative current collector. The negative electrode mixture layer contains a conductive additive and a negative electrode active material reversibly doped with a lithium ion. A surface area A per unit mass of the negative electrode mixture layer and a mass B of the negative electrode mixture layer supported on a unit area of the negative current collector on one surface satisfy a relationship of 200≤AB≤1,400.

    ELECTROCHEMICAL DEVICE
    4.
    发明申请
    ELECTROCHEMICAL DEVICE 有权

    公开(公告)号：US20230025107A1

    公开(公告)日：2023-01-26

    申请号：US17906414

    申请日：2021-03-29

    Applicant: Panasonic Intellectual Property Management Co., Ltd.

    Inventor： KENICHI NAGAMITSU

    IPC: H01M4/60 ,  H01M10/0525

    Abstract: An electrochemical device includes a positive electrode containing a positive electrode active material, a negative electrode containing a negative electrode active material, and an electrolytic solution. The positive electrode active material contains a conductive polymer, and the electrolytic solution contains anions with which the conductive polymer is doped and dedoped. In the discharged state, the concentration of the anions in the electrolytic solution is in the range from 1.1 mol/L to 1.6 mol/L, inclusive.

    LITHIUM-ION CAPACITOR
    7.
    发明公开
    LITHIUM-ION CAPACITOR 审中-公开

    公开(公告)号：US20240128030A1

    公开(公告)日：2024-04-18

    申请号：US18549151

    申请日：2022-03-17

    Applicant: Panasonic Intellectual Property Management Co., Ltd.

    Inventor： SHOHEI MASUDA ,  KENICHI NAGAMITSU ,  NAO MATSUMURA

    IPC: H01G11/06 ,  H01G11/28 ,  H01G11/42 ,  H01G11/62

    CPC classification number: H01G11/06 ,  H01G11/28 ,  H01G11/42 ,  H01G11/62

    Abstract: In a lithium-ion capacitor, the positive electrode includes a positive current collector and a positive electrode mixture layer. The positive electrode mixture layer contains a positive electrode active material. An electrostatic capacity of the positive current collector is less than or equal to 20 μF/cm2. The negative electrode includes a negative current collector and a negative electrode mixture layer. The negative electrode mixture layer contains a negative electrode active material. The electrolyte contains a first lithium salt and a second lithium salt. The first lithium salt is a lithium salt of a fluorine-containing inorganic acid, and the second lithium salt is a lithium salt of a fluorine-containing acid imide. A proportion of a molar concentration of the first lithium salt in a total molar concentration of the first lithium salt and the second lithium salt in the electrolyte is more than 0% and less than or equal to 35%.

    ELECTROCHEMICAL DEVICE
    8.
    发明公开
    ELECTROCHEMICAL DEVICE 审中-公开

    公开(公告)号：US20230231133A1

    公开(公告)日：2023-07-20

    申请号：US17998946

    申请日：2021-05-18

    Applicant: Panasonic Intellectual Property Management Co., Ltd.

    Inventor： KENICHI NAGAMITSU ,  NOBUHIRO SHIMAMURA

    IPC: H01M4/587 ,  H01M10/0525 ,  H01M10/0562 ,  H01M4/133 ,  H01G11/42 ,  H01G11/66 ,  H01G11/58

    CPC classification number: H01M4/587 ,  H01M10/0525 ,  H01M10/0562 ,  H01M4/133 ,  H01G11/42 ,  H01G11/66 ,  H01G11/58 ,  H01M2300/008 ,  H01M2004/021

    Abstract: An electrochemical device includes a positive electrode, a negative electrode, and an electrolyte having lithium ion conductivity. The positive electrode includes a positive current collector and a positive electrode mixture layer supported on the positive current collector. The positive electrode mixture layer contains a positive electrode active material reversibly doped with an anion. The negative electrode includes a negative current collector and a negative electrode mixture layer supported on the negative current collector. The negative electrode mixture layer contains a negative electrode active material reversibly doped with lithium ions. The negative electrode active material contains non-graphitizable carbon. A ratio Mp/Mn of a mass Mp of the positive electrode active material supported on a unit area of the positive electrode to a mass Mn of the negative electrode active material supported on a unit area of the negative electrode is in a range from 1.1 to 2.5, inclusive.

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