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    Anisotropic Expansion of Silicon-Dominant Anodes
    2.
    发明申请
    Anisotropic Expansion of Silicon-Dominant Anodes 有权

    公开(公告)号：US20250023015A1

    公开(公告)日：2025-01-16

    申请号：US18772771

    申请日：2024-07-15

    Applicant: Enevate Corporation

    Inventor： Giulia Canton ,  Benjamin Park ,  Fred Bonhomme ,  David J. Lee ,  Ian Browne

    IPC: H01M4/134 ,  H01M4/04 ,  H01M4/1395 ,  H01M4/66 ,  H01M4/74 ,  H01M10/0525

    Abstract: Systems and methods are provided for managing anisotropic expansion of silicon-dominant anodes. An example battery may include a cathode, an electrolyte, and an anode, with the anode including a current collector and an active material on a surface of the current collector. One or more characteristics of the current collector may ensure meeting particular expansion criteria. The expansion criteria may include expanding less in one of x-y directions and z-direction while expanding more in other one of the x-y directions and the z-direction, the x-y directions being parallel to the surface of the current collector and perpendicular to a thickness of the active material. The one or more characteristics include at least material of the current collector.

    METHODS OF FORMING ELECTROCHEMICAL CELLS WITH A COMBINATION FORMATION CHARGE RATE
    3.
    发明申请
    METHODS OF FORMING ELECTROCHEMICAL CELLS WITH A COMBINATION FORMATION CHARGE RATE 有权

    公开(公告)号：US20250006892A1

    公开(公告)日：2025-01-02

    申请号：US18760907

    申请日：2024-07-01

    Applicant: Enevate Corporation

    Inventor： Benjamin Yong Park ,  Jill R. Pestana ,  Heidi Leighette Anderson ,  Sung Won Choi

    IPC: H01M4/1395 ,  H01M4/04 ,  H01M4/134 ,  H01M4/36 ,  H01M10/0525

    Abstract: Methods of forming electrochemical cells are described. An electrochemical cell may be provided, with the electrochemical cell including a first electrode and a second electrode, wherein at least the first electrode includes up to about 99% by weight of silicon, a separator between the first electrode and the second electrode, and an electrolyte in contact with the first electrode, the second electrode, and the separator. During a formation process, a formation charge current may be at a first rate of constant current and at a second rate of constant current to the electrochemical cell. The first rate is less than the second rate. The providing may include providing the formation charge current at the first rate of constant current until a rate switching condition is met; and providing the formation charge current at the second rate of constant current after the rate switching condition is met.

    Method and system for silicon dominant lithium-ion cells with controlled lithiation of silicon
    4.
    发明授权
    Method and system for silicon dominant lithium-ion cells with controlled lithiation of silicon 有权

    公开(公告)号：US12183918B2

    公开(公告)日：2024-12-31

    申请号：US16584574

    申请日：2019-09-26

    Applicant: Enevate Corporation

    Inventor： Benjamin Park ,  Ian Browne ,  Sung Won Choi ,  Fred Bonhomme

    IPC: H01M4/38 ,  H01M4/02 ,  H01M4/04 ,  H01M4/134 ,  H01M10/0525 ,  H01M10/44

    Abstract: Systems and methods for silicon dominant lithium-ion cells with controlled lithiation of silicon may include a cathode, an electrolyte, and an anode. The anode may include silicon lithiated at a level after discharge that is configured to be above a minimum threshold level, where the minimum threshold lithiation is 3% silicon lithiation. The lithiation level of the silicon after charging the battery may range between 30% and 95% silicon lithiation, between 30% and 75% silicon lithiation, between 30% and 65% silicon lithiation, or between 30% and 50% silicon lithiation. The lithiation level of the silicon after discharging the battery may range between 3% and 50% silicon lithiation, between 3% and 30% silicon lithiation, or between 3% and 10% silicon lithiation. The minimum threshold level may be a lithiation level below which a cycle life of the battery degrades. The electrolyte may include a liquid, solid, or gel.

    CONTROL OF THERMAL TRANSFER DURING ELECTRODE PYROLYSIS BASED PROCESSING
    9.
    发明公开
    CONTROL OF THERMAL TRANSFER DURING ELECTRODE PYROLYSIS BASED PROCESSING 审中-公开

    公开(公告)号：US20240204169A1

    公开(公告)日：2024-06-20

    申请号：US18441445

    申请日：2024-02-14

    Applicant: ENEVATE CORPORATION

    Inventor： Fred Bonhomme ,  Benjamin Park ,  Todd Tatar ,  Ian Browne

    IPC: H01M4/1393 ,  H01M4/133 ,  H01M10/0525

    CPC classification number: H01M4/1393 ,  H01M4/133 ,  H01M10/0525

    Abstract: Systems and methods are provided for control of thermal transfer during electrode pyrolysis based processing. An apparatus for processing battery electrodes may include a core configured for use in forming an electrode roll and a thermal rod. The core is configured to engage a sheet including electrode material applied on a current collector, specifically by rolling the sheet on the core to create concentric alternating layers of electrode material and current collector around an internal space formed by the core. The thermal rod is configured for engaging the electrode roll via the internal space of the core such that, once engaged, at least a portion of the thermal rod is disposed within the concentric alternating layers of electrode material and current collector. The thermal rod is configured to provide thermal transfer into the electrode roll via the core during processing of the electrode roll, with the processing including applying pyrolysis.

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