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    NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY
    23.
    发明公开
    NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY 审中-公开

    公开(公告)号：US20230395810A1

    公开(公告)日：2023-12-07

    申请号：US18268426

    申请日：2021-12-17

    Applicant: Panasonic Intellectual Property Management Co., Ltd.

    Inventor： Yohei Uchiyama ,  Takahiro Fukuoka

    IPC: H01M4/70 ,  H01M10/0587 ,  H01M4/13 ,  H01M10/0525

    CPC classification number: H01M4/70 ,  H01M10/0587 ,  H01M4/13 ,  H01M10/0525 ,  H01M2004/027

    Abstract: A non-aqueous electrolyte secondary battery includes an electrode group, and a non-aqueous electrolyte. The electrode group includes a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode. The negative electrode includes a negative electrode current collector having a belt-like shape and having a first end and a second end in a short-side direction of the negative electrode current collector. The negative electrode current collector includes at least one slit group constituted of a plurality of slits extending in a form of a dashed line along the short-side direction from one end of the first end and the second end toward the other end, and a hole formed on the other end side of the plurality of slits and having a width larger than an average width of the plurality of slits.

    NEGATIVE ELECTRODE ACTIVE MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERIES
    28.
    发明申请
    NEGATIVE ELECTRODE ACTIVE MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERIES 审中-公开

    公开(公告)号：US20200350563A1

    公开(公告)日：2020-11-05

    申请号：US16957156

    申请日：2018-10-29

    Applicant: Panasonic Intellectual Property Management Co., Ltd.

    Inventor： Yohei Uchiyama ,  Norihisa Yamamoto ,  Tatsuya Akira

    IPC: H01M4/36 ,  H01M4/58 ,  H01M10/0525 ,  H01M4/38

    Abstract: A negative electrode active material for non-aqueous electrolyte secondary batteries, including: lithium silicate composite particles including a lithium silicate phase and silicon particles dispersed in the lithium silicate phase, the lithium silicate phase being an oxide phase including Li, Si, O, and M, where M is an element other than the following elements: Group 1 elements of alkali metals, Group 16 elements of oxygen group, Group 18 elements of rare gas, and Si. An amount of each element relative to a total amount of Li, Si and M in the lithium silicate phase is 3 to 55 mol % for Li, 25 mol % or more for Si, and 3 to 50 mol % for M. A carbon material is present inside the lithium silicate composite particles; and an area ratio of the carbon material occupying a cross section of the composite particles is 0.008 to 6%.

    LITHIUM SECONDARY BATTERY
    29.
    发明申请
    LITHIUM SECONDARY BATTERY 有权

    公开(公告)号：US20240421283A1

    公开(公告)日：2024-12-19

    申请号：US18704635

    申请日：2022-10-28

    Applicant: Panasonic Intellectual Property Management Co., Ltd.

    Inventor： Yohei Uchiyama ,  Akira Kano

    IPC: H01M4/134 ,  H01M4/02 ,  H01M10/0525 ,  H01M10/0587

    Abstract: A lithium secondary battery including a positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode, and a nonaqueous electrolyte having lithium-ion conductivity. At the negative electrode, lithium metal deposits during charging, and the lithium metal dissolves during discharging. The negative electrode includes a resin film, and a lithium metal layer laminated with the resin film.

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