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    ALL-SOLID-STATE SODIUM-ION SECONDARY BATTERY
    1.
    发明申请
    ALL-SOLID-STATE SODIUM-ION SECONDARY BATTERY 有权

    公开(公告)号：US20250070231A1

    公开(公告)日：2025-02-27

    申请号：US18721260

    申请日：2022-12-20

    Applicant: NIPPON ELECTRIC GLASS CO., LTD.

    Inventor： Kei TSUNODA ,  Hideo YAMAUCHI

    IPC: H01M10/0562 ,  H01M4/02 ,  H01M4/58 ,  H01M4/583 ,  H01M10/054

    Abstract: Provided is an all-solid-state sodium-ion secondary battery having an excellent charge-discharge efficiency and capable of increasing the energy density. An all-solid-state sodium-ion secondary battery 1 includes: a solid electrolyte layer 2 having a first principal surface 2a and a second principal surface 2b opposed to each other; a positive electrode layer 3 provided on the first principal surface 2a of the solid electrolyte layer 2; and a negative electrode layer 4 provided on the second principal surface 2b of the solid electrolyte layer 2, wherein a capacity ratio of the negative electrode layer 4 to the positive electrode layer 3 (negative electrode layer/positive electrode layer) is not less than 0.10 and not more than 1.10.

    BATTERY ELECTRODE PLATE, ELECTRODE PLATE ASSEMBLY, BATTERY AND ELECTRICAL DEVICE
    3.
    发明申请
    BATTERY ELECTRODE PLATE, ELECTRODE PLATE ASSEMBLY, BATTERY AND ELECTRICAL DEVICE 有权

    公开(公告)号：US20250070142A1

    公开(公告)日：2025-02-27

    申请号：US18947005

    申请日：2024-11-14

    Applicant: CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED

    Inventor： Yuefei CHEN ,  Jiali JIANG ,  Guoan MAO ,  Junqi CAO

    IPC: H01M4/36 ,  H01M4/02 ,  H01M4/58

    Abstract: The present application relates to the technical field of batteries, and in particular, to a battery electrode plate, an electrode plate assembly, a battery, and an electrical device. The battery electrode plate of the present application comprises a current collector, at least one surface of the current collector being provided with a first coating area, the first coating area being provided with an active material layer, and the active material layer comprising a first active material layer, a second active material layer, and a third active material layer that are connected sequentially from top to bottom along the height direction of the current collector, wherein the attenuation speed of the active material of the second active material layer is smaller than that of the active material in any one of the first active material layer and the third active material layer.

    EFFECTIVE CATHODE ACTIVE MATERIAL COATING TECHNIQUE – DRY COATING
    5.
    发明申请
    EFFECTIVE CATHODE ACTIVE MATERIAL COATING TECHNIQUE – DRY COATING 有权

    公开(公告)号：US20250070110A1

    公开(公告)日：2025-02-27

    申请号：US18783615

    申请日：2024-07-25

    Applicant: Pacific Industrial Development Corporation

    Inventor： Bing Tan ,  John Nodes ,  Yuhao Liao ,  Luqman Azhari

    IPC: H01M4/04 ,  H01M4/02 ,  H01M4/36 ,  H01M4/505 ,  H01M4/525 ,  H01M4/58

    Abstract: A process for preparing a coated cathode active material for use in energy storage devices that includes the steps of providing at least one coating material having an average D50 particle size that is in the range of 0.01-1.5 μm; providing one or more cathode active materials; blending the at least one coating material and the one or more cathode active materials with a plurality of milling beads to form a dry mixture, wherein the milling beads have a bead size ranging from 0.1 mm to 2.0 mm; rotating the dry mixture at a speed that is in the range of 50 rpm to 800 rpm for one or more hours to form the coated cathode active material; and separating the coated cathode active material from the milling beads. The coated cathode active material has an average particle size in the range of 2 μm to 30 μm.

    Method of preparing lithium metal phosphate cathode materials
    6.
    发明授权
    Method of preparing lithium metal phosphate cathode materials 有权

    公开(公告)号：US12234148B2

    公开(公告)日：2025-02-25

    申请号：US17743071

    申请日：2022-05-12

    Applicant: Rivian IP Holdings, LLC

    Inventor： Majid Talebiesfandarani ,  Soo Kim ,  Ki Tae Park

    IPC: C01B25/30 ,  C01B25/45 ,  H01M4/58 ,  H01M10/0525

    Abstract: A process of preparing a lithium metal phosphate includes contacting a water-soluble metal precursor, a water-insoluble metal precursor, and a phosphate precursor in an acidic aqueous medium; to form a reaction mixture; precipitating from the reaction mixture a metal phosphate; collecting the metal phosphate; combining the metal phosphate with a lithium precursor; and calcining the combined metal phosphate and lithium precursor at elevated temperature to form a lithium metal phosphate; wherein a mol ratio of water-soluble metal precursor to water-insoluble metal precursor is from 0.5:99.5 to 99.5:0.5.

    POSITIVE ELECTRODE FOR SECONDARY BATTERY AND SECONDARY BATTERY
    7.
    发明申请
    POSITIVE ELECTRODE FOR SECONDARY BATTERY AND SECONDARY BATTERY 有权

    公开(公告)号：US20250062345A1

    公开(公告)日：2025-02-20

    申请号：US18938726

    申请日：2024-11-06

    Applicant: MURATA MANUFACTURING CO., LTD.

    Inventor： Yuichiro HASHIZUME

    IPC: H01M4/58 ,  H01M4/02 ,  H01M4/36 ,  H01M4/62 ,  H01M10/0525

    Abstract: A secondary battery includes: a positive electrode including a positive electrode active material layer; a negative electrode; and an electrolytic solution, in which the positive electrode active material layer includes: a plurality of positive electrode active material particles; and a dispersant. Each of the plurality of positive electrode active material particles includes an olivine type iron-containing phosphate compound, and the dispersant includes a carboxymethylcellulose salt. The plurality of positive electrode active material particles has a volume-based average particle size of 0.6 μm or more, and the dispersant has a weight average molecular weight in terms of polyethylene oxide/polyethylene glycol that satisfies a relationship represented by a formula (1). M≤135106×D+548936  (1) (M represents a weight average molecular weight in terms of polyethylene oxide/polyethylene glycol of a dispersant; and D represents a volume-based average particle size of a plurality of positive electrode active material particles.)

    SOLID SECONDARY BATTERY AND METHOD OF MANUFACTURING THE SAME
    8.
    发明申请
    SOLID SECONDARY BATTERY AND METHOD OF MANUFACTURING THE SAME 有权

    公开(公告)号：US20250062317A1

    公开(公告)日：2025-02-20

    申请号：US18496685

    申请日：2023-10-27

    Applicant: Samsung SDI Co., Ltd.

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

    IPC: H01M4/136 ,  H01M4/133 ,  H01M4/134 ,  H01M4/36 ,  H01M4/38 ,  H01M4/58 ,  H01M4/587 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/0562

    Abstract: A solid secondary battery and a method of manufacturing the same are provided. The solid secondary battery includes a cathode layer, an anode layer, a solid electrolyte layer provided between the cathode layer and the anode layer, wherein the cathode layer includes a cathode current collector and a cathode active material layer provided on one surface or two surfaces of the cathode current collector. The cathode active material layer includes a composite cathode active material, and the composite cathode active material includes a composite of M2S, an alkali metal salt, and an inorganic electronic-conductive structure, wherein M is an alkali metal, and the alkali metal is Li or Na. The inorganic electronic-conductive structure has an electronic conductivity of 11×10−3 S/cm or more, and the composite includes a solid solution of the M2S and the alkali metal salt.

    Secondary battery and apparatus containing the secondary battery
    10.
    发明授权
    Secondary battery and apparatus containing the secondary battery 有权

    公开(公告)号：US12230800B2

    公开(公告)日：2025-02-18

    申请号：US17547280

    申请日：2021-12-10

    Applicant: Contemporary Amperex Technology Co., Limited

    Inventor： Jianjun Ma ,  Rui Shen ,  Libing He ,  Baojian Zhu ,  Lei Chen

    IPC: H01M4/587 ,  H01M4/505 ,  H01M4/525 ,  H01M4/58 ,  H01M10/0525 ,  H01M4/02

    Abstract: This application discloses a secondary battery including a positive electrode plate and a negative electrode plate, wherein the positive electrode plate comprises a positive electrode current collector and a positive electrode film disposed on a surface of the positive electrode current collector and comprising a positive active material, the negative electrode plate comprises a negative electrode current collector and a negative electrode film disposed on a surface of the negative electrode current collector and comprising a negative active material. The positive active material comprises one or more of layered lithium transition metal oxides and modified compounds thereof, and a resistance R of the negative electrode plate satisfies: 6.0 mΩ≤R≤12.0 mΩ; or the positive active material comprises one or more of lithium-containing phosphates with olivine structure and modified compounds thereof, and a resistance R of the negative electrode plate satisfies: 3.0 mΩ≤R≤7.0 mΩ.

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