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    METHOD AND SYSTEM FOR SILICON-DOMINANT LITHIUM-ION CELLS WITH CONTROLLED UTILIZATION OF SILICON
    3.
    发明申请
    METHOD AND SYSTEM FOR SILICON-DOMINANT LITHIUM-ION CELLS WITH CONTROLLED UTILIZATION OF SILICON 审中-公开

    公开(公告)号：WO2021071695A1

    公开(公告)日：2021-04-15

    申请号：PCT/US2020/053203

    申请日：2020-09-29

    Applicant: ENEVATE CORPORATION

    Inventor： PARK, Benjamin ,  BROWNE, Ian ,  CHOI, Sung Won ,  BONHOMME, Fred

    IPC: H01M4/01 ,  H01M4/36

    Abstract: Systems and methods for silicon-dominant lithium-ion cells with controlled utilization of silicon may include a cathode, an electrolyte, and an anode, where the anode has an active material comprising more than 50% silicon. The battery may be charged by lithiating silicon while not lithiating carbon. The active material may comprise more than 70% silicon. A voltage of the anode during discharge of the battery may remain above a minimum voltage at which silicon can be lithiated. The anode may have a specific capacity of greater than 3000 mAh/g. The battery may have a specific capacity of greater than 1000 mAh/g. The anode may have a greater than 90% initial Coulombic efficiency and may be polymer binder free. The battery may be charged at a 10C rate or higher. The battery may be charged at temperatures below freezing without lithium plating. The electrolyte may comprise a liquid, solid, or gel.

    METHOD AND SYSTEM FOR SILICON DOMINANT LITHIUM-ION CELLS WITH CONTROLLED LITHIATION OF SILICON
    7.
    发明申请
    METHOD AND SYSTEM FOR SILICON DOMINANT LITHIUM-ION CELLS WITH CONTROLLED LITHIATION OF SILICON 审中-公开

    公开(公告)号：WO2021061324A1

    公开(公告)日：2021-04-01

    申请号：PCT/US2020/047785

    申请日：2020-08-25

    Applicant: ENEVATE CORPORATION

    Inventor： PARK, Benjamin ,  BROWNE, Ian ,  CHOI, Sung Won ,  BONHOMME, Fred

    IPC: H01M4/38 ,  H01M4/1395 ,  H01M10/058

    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.

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