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    ELECTROLYTE ADDITIVES IN LITHIUM-ION BATTERIES
    4.
    发明申请
    ELECTROLYTE ADDITIVES IN LITHIUM-ION BATTERIES 审中-公开

    公开(公告)号：US20190198912A1

    公开(公告)日：2019-06-27

    申请号：US16291031

    申请日：2019-03-04

    Applicant: StoreDot Ltd.

    Inventor： Eran SELLA ,  Mor Shmuel ARMON

    IPC: H01M10/052 ,  H01M10/0569

    CPC classification number: H01M10/052 ,  H01M10/0567 ,  H01M10/0569 ,  H01M2300/0051 ,  Y02T10/7011

    Abstract: Lithium ion batteries and electrolytes therefor are provided, which include electrolyte additives having dithioester functional group(s) that stabilize the SEI (solid-electrolyte interface) at the surfaces of the anode material particles, and/or stabilize the CEI (cathode electrolyte interface) at the surfaces of the cathode material particles, and/or act as oxygen scavengers to prevent cell degradation. The electrolyte additives having dithioester functional group(s) may function as polymerization controlling and/or chain transfer agents that regulate the level of polymerization of other electrolyte components, such as VC (vinyl carbonate) and improve the formation and operation of the batteries. The lithium ion batteries may have metalloid-based anodes—including mostly Si, Ge and/or Sn as anode active material particles.

    ELECTROLYTE ADDITIVES FOR FAST CHARGING LITHIUM ION BATTERIES
    8.
    发明申请
    ELECTROLYTE ADDITIVES FOR FAST CHARGING LITHIUM ION BATTERIES 有权

    公开(公告)号：US20210234197A1

    公开(公告)日：2021-07-29

    申请号：US16774004

    申请日：2020-01-28

    Applicant: StoreDot Ltd.

    Inventor： Ido HERZOG ,  Sanaa MUSA ,  Shirel COHEN ,  Rony SCHWARZ ,  Eran SELLA

    IPC: H01M10/0567 ,  H01M10/0525 ,  H01M4/38 ,  H01M4/505 ,  H01M4/525 ,  H01M4/485 ,  H01M10/0569

    Abstract: Lithium ion batteries and electrolytes therefor are provided, which include electrolyte additives having dithioester functional group(s) that stabilize the SEI (solid-electrolyte interface) at the surfaces of the anode material particles, and/or stabilize the CEI (cathode electrolyte interface) at the surfaces of the cathode material particles, and/or act as oxygen scavengers to prevent cell degradation. The electrolyte additives having dithioester functional group(s) may function as polymerization controlling and/or chain transfer agents that regulate the level of polymerization of other electrolyte components, such as VC (vinyl carbonate) and improve the formation and operation of the batteries. The lithium ion batteries may have metalloid-based anodes—including mostly Si, Ge and/or Sn as anode active material particles.

    SILVER AND/OR TIN COATED SILICON ACTIVE MATERIAL AND ANODE SLURRIES FORMED THEREFROM
    9.
    发明申请
    SILVER AND/OR TIN COATED SILICON ACTIVE MATERIAL AND ANODE SLURRIES FORMED THEREFROM 有权

    公开(公告)号：US20210210754A1

    公开(公告)日：2021-07-08

    申请号：US16732506

    申请日：2020-01-02

    Applicant: Storedot Ltd.

    Inventor： Eran SELLA ,  Eynat MATZNER ,  Tal CHEN ,  Michael KULBAK

    IPC: H01M4/38 ,  C09C3/06 ,  H01M4/54 ,  H01M10/0525 ,  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.

    ENERGY AND POWER DENSE FAST-CHARGING LITHIUM ION BATTERIES
    10.
    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.

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