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    Multiple layers cylindrical cell
    1.
    发明申请
    Multiple layers cylindrical cell 有权

    公开(公告)号：US20250007121A1

    公开(公告)日：2025-01-02

    申请号：US18344832

    申请日：2023-06-29

    Applicant: STOREDOT LTD.

    Inventor： Nir DOLEV ,  Daniel ARONOV

    IPC: H01M50/538 ,  H01M10/04 ,  H01M50/512

    Abstract: An electrochemical cell that includes (i) a cathode tabs electrical coupler; (ii) an anode tabs electrical coupler; and (iii) a stack that is rolled about an axis, wherein the stack includes multiple instances of: (a) a cathode sheet; (b) a cathode tab that extends from the cathode sheet at a first direction; (c) an anode sheet, (e) an anode tab that extends from the anode sheet at a second direction, the second direction differs from the first direction; and (f) one or more separator sheets. Multiple cathode tabs of the multiple instances are coupled in parallel to each other by the cathode tabs electrical coupler. Multiple anode tabs of the multiple instances are coupled in parallel to each other by the anode tabs electrical coupler.

    ENERGY AND POWER DENSE FAST-CHARGING LITHIUM ION BATTERIES
    2.
    发明申请
    ENERGY AND POWER DENSE FAST-CHARGING LITHIUM ION BATTERIES 有权

    公开(公告)号：US20210210741A1

    公开(公告)日：2021-07-08

    申请号：US16735737

    申请日：2020-01-07

    Applicant: Storedot Ltd.

    Inventor： Ivgeni SHTERENBERG ,  Eran SELLA ,  Eynat MATZNER ,  Shirel COHEN ,  Hadar MAZOR SHAFIR ,  Daniel ARONOV

    IPC: H01M4/04 ,  H01M4/1395 ,  H01M4/38 ,  H01M10/0525 ,  H01M10/02

    Abstract: Prelithiation methods and fast charging lithium ion cell are provided, which combine high energy density and high power density. Several structural and chemical modifications are disclosed to enable combination of features that achieve both goals simultaneously in fast charging cells having long cycling lifetime. The cells have anodes with high content of Si, Ge and/or Sn as principal anode material, and cathodes providing a relatively low C/A ratio, with the anodes being prelithiated to have a high lithium content, provided by a prelithiation algorithm. Disclosed algorithms determine lithium content achieved through prelithiation by optimizing the electrolyte to increase cycling lifetime, adjusting energy density with respect to other cell parameters, and possibly reducing the C/A ratio to maintain the required cycling lifetime.

    SEMI-SOLID ELECTROLYTES WITH FLEXIBLE PARTICLE COATINGS
    3.
    发明申请
    SEMI-SOLID ELECTROLYTES WITH FLEXIBLE PARTICLE COATINGS 审中-公开

    公开(公告)号：US20190207270A1

    公开(公告)日：2019-07-04

    申请号：US16268527

    申请日：2019-02-06

    Applicant: StoreDot Ltd.

    Inventor： Doron BURSHTAIN ,  Daniel ARONOV ,  Eran SELLA

    IPC: H01M10/42 ,  H01M10/0525 ,  H01M10/0567

    CPC classification number: H01M10/4235 ,  H01M10/0525 ,  H01M10/0567 ,  H01M2300/0091 ,  H01M2300/0094

    Abstract: Electrolytes, anode material particles and methods are provided for improving performance and enhancing the safety of lithium ion batteries. Electrolytes may comprise ionic liquid(s) as additives which protect the anode material particles and possibly bind thereto; and/or may comprise a large portion of fluoroethylene carbonate (FEC) and/or vinylene carbonate (VC) as the cyclic carbonate component, and possibly ethyl acetate (EA) and/or ethyl methyl carbonate (EMC) as the linear component; and/or may comprise composite electrolytes having solid electrolyte particles coated by flexible ionic conductive material. Ionic liquid may be used to pre-lithiate in situ the anode material particles. Disclosed electrolytes improve lithium ion conductivity, prevent electrolyte decomposition and/or prevents lithium metallization on the surface of the anode.

    METHODS FOR PRODUCTION OF ELECTRODE STACKS
    5.
    发明申请
    METHODS FOR PRODUCTION OF ELECTRODE STACKS 审中-公开

    公开(公告)号：US20180254471A1

    公开(公告)日：2018-09-06

    申请号：US15972255

    申请日：2018-05-07

    Applicant: StoreDot Ltd.

    Inventor： Sergey REMIZOV ,  Boris BRUDNIK ,  David JACOB ,  Daniel ARONOV

    IPC: H01M4/04 ,  H01M10/0585

    CPC classification number: H01M4/0402 ,  H01M2/168 ,  H01M4/0435 ,  H01M4/667 ,  H01M10/0585

    Abstract: Methods, stacks and electrochemical cells are provided, which improve production processes and yield flexible and durable electrode stacks. Methods comprise depositing an electrode slurry on a sacrificial film to form an electrode thereupon, wherein the electrode slurry comprises a first solvent, attaching (e.g., laminating) a current collector film, which is produced at least partly using a second solvent, onto the formed electrode, to yield a stack, wherein a binding strength of the electrode to the current collector film is higher than a binding strength of the electrode to the sacrificial film, and delaminating the sacrificial film from the electrode while maintaining the attachment of the electrode to the current collector film. Additional layers such as a cell separator and an additional electrode may be further attached using similar steps.

    ELECTROLYTES WITH IONIC LIQUID ADDITIVES FOR LITHIUM ION BATTERIES
    8.
    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.

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