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    METHOD OF PRODUCING POSITIVE ELECTRODE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
    1.
    发明申请
    METHOD OF PRODUCING POSITIVE ELECTRODE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY 有权

    公开(公告)号：US20250070158A1

    公开(公告)日：2025-02-27

    申请号：US18946591

    申请日：2024-11-13

    Applicant: Nichia Corporation

    Inventor： Kenichi KOBAYASHI

    IPC: H01M4/525 ,  C01G53/00 ,  H01M4/505 ,  H01M10/0525

    Abstract: A method of producing a positive electrode active material for a nonaqueous electrolyte secondary battery, the method includes preparing nickel-containing composite oxide particles having a ratio 1D90/1D10 of a 90% particle size 1D90 to a 10% particle size 1D10 in volume-based cumulative particle size distribution of 3 or less; obtaining a raw material mixture containing the composite oxide particles and a lithium compound and having a ratio of a total number of moles of lithium to a total number of moles of metal elements contained in the composite oxide in a range of 1 to 1.3; subjecting the raw material mixture to a heat treatment to obtain a heat-treated material; subjecting the heat-treated material to a dry-dispersion treatment to obtain a first dispersion; and bringing the first dispersion into contact with a liquid medium to obtain a second dispersion.

    SINGLE CRYSTAL DOPED CATHODE MATERIALS FROM RECYCLED LITHIUM-ION BATTERIES
    3.
    发明申请
    SINGLE CRYSTAL DOPED CATHODE MATERIALS FROM RECYCLED LITHIUM-ION BATTERIES 有权

    公开(公告)号：US20250062341A1

    公开(公告)日：2025-02-20

    申请号：US18940387

    申请日：2024-11-07

    Applicant: Ascend Elements, Inc.

    Inventor： Bohang Song ,  Eric Gratz ,  Yadong Liu ,  Dhiren Mistry ,  Jiyong Shin ,  Martha Monzon

    IPC: H01M4/525 ,  B09B3/70 ,  B09B3/80 ,  B09B101/16 ,  C01G53/00 ,  C30B29/22 ,  H01M4/02 ,  H01M4/505

    Abstract: In a battery recycling process, a recycling stream including charge material metals from exhausted Li-ion batteries is aggregated or otherwise comminuted to generate recycled battery charge material having comparable or improved cycle life as well as recycled charge material precursor having fewer cracking defects using doping substances in both a coprecipitation phase and a sintering phase of the recycling sequence. Prior to coprecipitation of a cathode material precursor, a leach solution of comingled charge material metals is produced, the ratio of the charge material metals is adjusted based on recycled battery specifications, and a relatively small quantity of a first dopant is added. The doped precursor, a lithium salt, and a second dopant are combined and sintered to form a doped cathode material having a single crystal morphology and a higher tap density than the doped cathode precursor.

    LITHIUM SECONDARY BATTERIES
    4.
    发明申请
    LITHIUM SECONDARY BATTERIES 有权

    公开(公告)号：US20250062339A1

    公开(公告)日：2025-02-20

    申请号：US18723235

    申请日：2022-12-14

    Applicant: SYENSQO SA

    Inventor： Marc-David Braida ,  Jong-Hyun Lee ,  Hyun-Cheol Lee ,  Ji-Hye Won

    IPC: H01M4/525 ,  H01M4/505 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/42

    Abstract: The present invention pertains to a lithium secondary battery comprising a cathode comprising a lithium-manganese-rich layered oxide as a cathode electroactive material and a liquid electrolyte comprising at least one fluorinated acyclic carboxylic acid ester. The present invention also relates to use of a liquid electrolyte comprising at least one fluorinated acyclic carboxylic acid ester in a lithium secondary battery, for improving the cycling performance, comprising a cathode comprising a lithium-manganese-rich layered oxide as a cathode electroactive material according to the present invention.

    SINTERED CATHODE ACTIVE MATERIALS
    8.
    发明申请
    SINTERED CATHODE ACTIVE MATERIALS 有权

    公开(公告)号：US20250054972A1

    公开(公告)日：2025-02-13

    申请号：US18799850

    申请日：2024-08-09

    Applicant: Apple Inc.

    Inventor： Huiming Wu ,  Martin Bettge ,  Shawn W. Snyder

    IPC: H01M4/525 ,  C01G53/00 ,  H01M4/02 ,  H01M4/505 ,  H01M10/0525

    Abstract: The disclosure is directed to sintered cathode active materials than can be used in lithium-ion batteries. The sintered cathode active materials are prepared by forming a calcinated powder. The calcinated power is combined with inactive components to form a slurry. The slurry is dried and densified to form a green body. The green body is sintered to form the sintered cathode active material. The powder, slurry, green body, and sintered cathode active material have properties that provide improved performance of the cathode active material.

    MULTI-STAGE LITHIATION FOR CATHODE MATERIAL
    9.
    发明申请
    MULTI-STAGE LITHIATION FOR CATHODE MATERIAL 有权

    公开(公告)号：US20250054964A1

    公开(公告)日：2025-02-13

    申请号：US18230938

    申请日：2023-08-07

    Applicant: Ascend Elements, Inc.

    Inventor： Yadong Liu ,  Eric Gratz ,  Haixia Deng ,  Dhiren Mistry ,  Anil Parmar ,  Martha Monzon

    IPC: H01M4/525 ,  C30B29/22 ,  H01M4/505 ,  H01M10/54

    Abstract: A Li-ion cathode material is prepared by a multi-stage lithiation process that separates a total amount of lithium called for by the recycled battery to be used in a series of sintering stages. A leaching, ratio adjustment and coprecipitation sequence forms a cathode precursor having a predetermined ratio of metallic elements from a comingled recycling stream of Li-ion batteries. The precursor is sintered with a lithium salt in a sequence of stages, each having a portion of the total lithium quantity, for a predetermined duration and temperature. The initial sintering stage tends to define the crystallinity of the resulting active cathode material and has a particle size determined at least in part by the portion of lithium at each stage.

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