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    DRY CATHODE FILM, DRY CATHODE INCLUDING THE SAME, AND ALL-SOLID SECONDARY BATTERY INCLUDING THE DRY CATHODE FILM
    4.
    发明申请
    DRY CATHODE FILM, DRY CATHODE INCLUDING THE SAME, AND ALL-SOLID SECONDARY BATTERY INCLUDING THE DRY CATHODE FILM 有权

    公开(公告)号：US20250079445A1

    公开(公告)日：2025-03-06

    申请号：US18495657

    申请日：2023-10-26

    Applicant: Samsung SDI Co., Ltd.

    Inventor： Sungnim Jo ,  Inhyuk Son ,  Taehyun Park ,  Hyungsub Lim ,  Kyueun Shim ,  Jieun Lee

    IPC: H01M4/36 ,  H01M4/40 ,  H01M4/58 ,  H01M4/583 ,  H01M10/0562

    Abstract: A dry cathode film includes a first dry cathode active material layer adjacent to a cathode current collector, and a second dry cathode active material layer on the first dry cathode active material layer. The first dry cathode active material layer and the second dry cathode active material layer each independently include a dry cathode active material including a composite of Li2S, a lithium salt, and a carbon-based material; a dry sulfide-based solid electrolyte; and a dry binder. A content of the dry cathode active material in the first dry cathode active material layer is greater than a content of the dry cathode active material in the second dry cathode active material layer, and a content of the dry sulfide-based solid electrolyte in the first dry cathode active material layer is less than a content of the dry sulfide-based solid electrolyte in the second dry cathode active material layer.

    SOLID SECONDARY BATTERY, AND METHOD OF PREPARING THE SAME
    5.
    发明申请
    SOLID SECONDARY BATTERY, AND METHOD OF PREPARING THE SAME 有权

    公开(公告)号：US20250062397A1

    公开(公告)日：2025-02-20

    申请号：US18497764

    申请日：2023-10-30

    Applicant: SAMSUNG SDI CO., LTD.

    Inventor： Hyungsub Lim ,  Inhyuk Son ,  Sungnim Jo ,  Kyueun Shim ,  Taehyun Park ,  Jieun Lee

    IPC: H01M10/0562 ,  H01M4/133 ,  H01M4/136 ,  H01M4/1393 ,  H01M4/40

    Abstract: A solid secondary battery may include a cathode layer, an anode layer, and a solid electrolyte layer, wherein the cathode layer includes a cathode current collector and a cathode active material layer on one side or two sides of the cathode current collector, the cathode active material layer includes a composite cathode active material, the composite cathode active material includes a composite of i) M2S, ii) an alkali metal salt, iii) an inorganic electronically-conductive structure, and iv) a two-dimensional carbonaceous structure or a fibrous carbonaceous material having an aspect ratio of 2 or more, wherein M is an alkali metal, and the alkali metal is Li or Na, wherein the inorganic electronically-conductive structure has an electronic conductivity of 10−3 S/cm or more, the composite includes a solid solution of the M2S and the alkali metal salt, and the two-dimensional carbonaceous structure is graphene, graphene oxide, or a combination thereof.

    SOLID SECONDARY BATTERY
    6.
    发明申请
    SOLID SECONDARY BATTERY 有权

    公开(公告)号：US20250006982A1

    公开(公告)日：2025-01-02

    申请号：US18429082

    申请日：2024-01-31

    Applicant: Samsung SDI Co., Ltd.

    Inventor： Inhyuk Son ,  Sungnim Jo ,  Kyueun Shim ,  Hyungsub Lim ,  Taehyun Park ,  Jieun Lee

    IPC: H01M10/056 ,  H01M10/42 ,  H01M50/383

    Abstract: A solid secondary battery includes a cathode layer, an anode layer, and a solid electrolyte layer between the cathode layer and the anode layer and further includes a first organic electrolyte between the cathode layer and the solid electrolyte layer, a second organic electrolyte between the anode layer and the solid electrolyte layer, a third organic electrolyte in the solid electrolyte layer, or any combination thereof, wherein the first organic electrolyte, the second organic electrolyte, and the third organic electrolyte each independently include a polymer electrolyte, a liquid electrolyte, or any combination thereof, the liquid electrolyte having a viscosity of 10 cps or more at 25° C. and 1 atm, wherein the cathode layer includes a cathode current collector and a cathode active material layer on at least one surface of the cathode current collector, the cathode active material layer including a Li2S-containing composite.

    ALL SOLID SECONDARY BATTERY
    10.
    发明申请
    ALL SOLID SECONDARY BATTERY 有权

    公开(公告)号：US20250079504A1

    公开(公告)日：2025-03-06

    申请号：US18641064

    申请日：2024-04-19

    Applicant: Samsung SDI Co., Ltd.

    Inventor： Taehyun Park ,  Inhyuk Son ,  Sungnim Jo ,  Kyueun Shim ,  Jieun Lee ,  Hyungsub Lim

    IPC: H01M10/0562 ,  H01M4/02 ,  H01M4/133 ,  H01M4/136 ,  H01M4/36 ,  H01M4/38 ,  H01M4/583 ,  H01M10/0568 ,  H01M50/414

    Abstract: An all solid secondary battery including a cathode, an anode, and a solid electrolyte layer provided between the cathode and the anode is provided. The anode includes an anode current collector and a first anode active material layer provided on one surface of the anode current collector. The cathode includes a cathode current collector and a cathode active material layer provided on one surface or two surfaces of the cathode current collector and containing a cathode active material, which Li2S, a Li2S composite, or a combination thereof. The all solid secondary battery includes an interlayer positioned between the anode and the solid electrolyte layer and containing a single lithium ion conducting polymer (SLICP) and a liquid electrolyte.

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