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    Partly immobilized ionic liquid electrolyte additives for lithium ion batteries
    1.
    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.

    Composite anode material made of core-shell particles
    6.
    发明授权
    Composite anode material made of core-shell particles 有权

    公开(公告)号：US10454101B2

    公开(公告)日：2019-10-22

    申请号：US15414655

    申请日：2017-01-25

    Applicant: Storedot Ltd.

    Inventor： David Jacob ,  Sergey Remizov ,  Nitzan Shadmi ,  Hani Farran ,  Daniel Aronov

    IPC: H01M4/131 ,  H01M4/36 ,  H01M4/60 ,  H01M4/38 ,  H01M4/485 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/02

    Abstract: Core-shell particles, composite anode material, anodes made therefrom, lithium ion cells and methods are provided, which enable production of fast charging lithium ion batteries. The composite anode material has core-shell particles which are configured to receive and release lithium ions at their cores and to have shells that are configured to allow for core expansion upon lithiation. The cores of the core-shell particles are connected to the respective shells by conductive material such as carbon fibers, which may form a network throughout the anode material and possibly interconnect cores of many core-shell particles to enhance the electrical conductivity of the anode. Ionic conductive material and possibly mechanical elements may be incorporated in the core-shell particles to enhance ionic conductivity and mechanical robustness toward expansion and contraction of the cores during lithiation and de-lithiation.

    Composite anode material made of ionic-conducting electrically insulating material
    9.
    发明授权
    Composite anode material made of ionic-conducting electrically insulating material 有权

    公开(公告)号：US10461322B2

    公开(公告)日：2019-10-29

    申请号：US15792779

    申请日：2017-10-25

    Applicant: StoreDot Ltd.

    Inventor： David Jacob ,  Sergey Remizov ,  Nitzan Shadmi ,  Hani Farran ,  Daniel Aronov

    IPC: H01M4/1395 ,  H01M4/36 ,  H01M4/60 ,  H01M4/38 ,  H01M4/485 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/02

    Abstract: Core-shell particles, composite anode material, anodes made therefrom, lithium ion cells and methods are provided, which enable production of fast charging lithium ion batteries. The composite anode material has core-shell particles which are configured to receive and release lithium ions at their cores and to have shells that are configured to allow for core expansion upon lithiation. The cores of the core-shell particles are connected to the respective shells by conductive material such as carbon fibers, which may form a network throughout the anode material and possibly interconnect cores of many core-shell particles to enhance the electrical conductivity of the anode. Ionic conductive material and possibly mechanical elements may be incorporated in the core-shell particles to enhance ionic conductivity and mechanical robustness toward expansion and contraction of the cores during lithiation and de-lithiation.

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