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    Same-solvent preparation of organic anode slurries
    1.
    发明授权
    Same-solvent preparation of organic anode slurries 有权

    公开(公告)号：US11276850B2

    公开(公告)日：2022-03-15

    申请号：US16732528

    申请日：2020-01-02

    Applicant: Storedot Ltd.

    Inventor： Eran Sella ,  Leora Shapiro ,  Rony Schwarz ,  Moria Koren ,  Maxim Kagan

    IPC: H01B1/24 ,  H01M4/00 ,  H01M4/36 ,  H01M4/62 ,  H01M4/38 ,  H01M4/02

    Abstract: Methods of preparing Si-based anode slurries and anode made thereof are provided. Methods comprise coating silicon particles within a size range of 300-700 nm by silver and/or tin particles within a size range of 20-500 nm, mixing the coated silicon particles with conductive additives and binders in a solvent to form anode slurry, and preparing an anode from the anode slurry. Alternatively or complementarily, silicon particles may be milled in an organic solvent, and, in the same organic solvent, coating agent(s), conductive additive(s) and binder(s) may be added to the milled silicon particles—to form the Si-based anode slurry. Alternatively or complementarily, milled silicon particles may be mixed, in a first organic solvent, with coating agent(s), conductive additive(s) and binder(s)—to form the Si-based anode slurry. Disclosed methods simplify the anode production process and provide equivalent or superior anodes.

    Partly immobilized ionic liquid electrolyte additives for lithium ion batteries
    2.
    发明授权
    Partly immobilized ionic liquid electrolyte additives for lithium ion batteries 有权

    公开(公告)号：US11594757B2

    公开(公告)日：2023-02-28

    申请号：US15447784

    申请日：2017-03-02

    Applicant: StoreDot Ltd.

    Inventor： Doron Burshtain ,  Eran Sella ,  Niles Fleischer ,  Hani Farran ,  Leora Shapiro

    IPC: H01M10/0567 ,  H01M10/0525 ,  H01M4/587 ,  H01M4/36 ,  H01M4/62

    Abstract: Electrolytes, anodes, lithium ion cells and methods are provided for preventing lithium metallization in lithium ion batteries to enhance their safety. Electrolytes comprise up to 20% ionic liquid additives which form a mobile solid electrolyte interface during charging of the cell and prevent lithium metallization and electrolyte decomposition on the anode while maintaining the lithium ion mobility at a level which enables fast charging of the batteries. Anodes are typically metalloid-based, for example include silicon, germanium, tin and/or aluminum. A surface layer on the anode bonds, at least some of the ionic liquid additive to form an immobilized layer that provides further protection at the interface between the anode and the electrolyte, prevents metallization of lithium on the former and decomposition of the latter.

    SAME-SOLVENT PREPARATION OF ORGANIC ANODE SLURRIES
    7.
    发明申请
    SAME-SOLVENT PREPARATION OF ORGANIC ANODE SLURRIES 有权

    公开(公告)号：US20210210746A1

    公开(公告)日：2021-07-08

    申请号：US16732528

    申请日：2020-01-02

    Applicant: Storedot Ltd.

    Inventor： Eran SELLA ,  Leora Shapiro ,  Rony Schwarz ,  Moria Koren ,  Maxim Kagan

    IPC: H01M4/36 ,  H01M4/38 ,  H01M4/62

    Abstract: Methods of preparing Si-based anode slurries and anode made thereof are provided. Methods comprise coating silicon particles within a size range of 300-700 nm by silver and/or tin particles within a size range of 20-500 nm, mixing the coated silicon particles with conductive additives and binders in a solvent to form anode slurry, and preparing an anode from the anode slurry. Alternatively or complementarily, silicon particles may be milled in an organic solvent, and, in the same organic solvent, coating agent(s), conductive additive(s) and binder(s) may be added to the milled silicon particles—to form the Si-based anode slurry. Alternatively or complementarily, milled silicon particles may be mixed, in a first organic solvent, with coating agent(s), conductive additive(s) and binder(s)—to form the Si-based anode slurry. Disclosed methods simplify the anode production process and provide equivalent or superior anodes.

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