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    ELECTROLYTES WITH IONIC LIQUID ADDITIVES FOR LITHIUM ION BATTERIES
    4.
    发明申请
    ELECTROLYTES WITH IONIC LIQUID ADDITIVES FOR LITHIUM ION BATTERIES 审中-公开

    公开(公告)号：US20170294681A1

    公开(公告)日：2017-10-12

    申请号：US15447889

    申请日：2017-03-02

    Applicant: StoreDot Ltd.

    Inventor： Doron BURSHTAIN ,  Nir KEDEM ,  Daniel ARONOV

    IPC: H01M10/0567 ,  H01M4/38 ,  H01M10/0525

    CPC classification number: H01M10/0567 ,  H01M4/366 ,  H01M4/38 ,  H01M4/58 ,  H01M4/5815 ,  H01M4/587 ,  H01M4/602 ,  H01M10/0525

    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.

    ELECTROLYTES WITH VINYL CARBONATE AND BUTYRATE SOLVENTS
    7.
    发明申请
    ELECTROLYTES WITH VINYL CARBONATE AND BUTYRATE SOLVENTS 审中-公开

    公开(公告)号：US20190148774A1

    公开(公告)日：2019-05-16

    申请号：US16243190

    申请日：2019-01-09

    Applicant: StoreDot Ltd.

    Inventor： Evgenia Liel (Jeny) KUKS ,  Liron AMIR ,  Nir KEDEM

    IPC: H01M10/0569 ,  H01M10/0525 ,  H01M4/38 ,  H01M10/42

    Abstract: Electrolytes are provided, as well as fast charging lithium ion batteries with the electrolytes and corresponding methods—which enhance the safety and performance of the fast charging lithium ion batteries. The electrolytes comprise four-carbon chain ester(s) such as ethyl butyrate and/or butyl acetate as a significant part of the linear solvent (e.g., at least half and up to the full volume) and possibly vinyl carbonate as the cyclic carbonate solvent, in addition to lithium salt(s) and possibly additives. The use of vinyl carbonate enhances the ion conductivity of the electrolyte, while the use of four-carbon chain ester(s) such as ethyl butyrate and/or butyl acetate enhances the safety of the battery.

    REGULATION OF METAL ION LEVELS IN LITHIUM ION BATTERIES
    10.
    发明申请
    REGULATION OF METAL ION LEVELS IN LITHIUM ION BATTERIES 审中-公开

    公开(公告)号：US20190089016A1

    公开(公告)日：2019-03-21

    申请号：US15706829

    申请日：2017-09-18

    Applicant: StoreDot Ltd.

    Inventor： Ron PAZ ,  Nir KEDEM ,  Doron BURSHTAIN ,  Nir BARAM ,  Nir POUR ,  Daniel ARONOV

    IPC: H01M10/42 ,  H01M10/0525

    Abstract: Systems and methods are provided, in which the level of metal ions in cells stacks and lithium ion batteries is regulated in situ, with the electrodes of the cell stack(s) in the respective pouches. Regulation of metal ions may be carried out electrochemically by metal ion sources in the pouches, electrically connected to the electrodes. The position and shape of the metal ion sources may be optimized to create uniform metal ion movements to the electrode surfaces and favorable SEI formation. The metal ion sources may be removable, or comprise a lithium source for lithiating the anodes or cathodes during operation of the battery according to SoH parameters. Regulation of metal ions may be carried out from metal ion sources in separate electrolyte reservoir(s), with circulation of the metal-ion-containing electrolyte through the cell stacks in the pouches prior or during the formation.

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