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    Production of metalloid-based anodes for lithium ion batteries using dry etching
    11.
    发明授权
    Production of metalloid-based anodes for lithium ion batteries using dry etching 有权

    公开(公告)号：US10581065B1

    公开(公告)日：2020-03-03

    申请号：US16258730

    申请日：2019-01-28

    Applicant: StoreDot Ltd.

    Inventor： Eran Sella ,  Daniel Aronov

    IPC: H01M4/1395 ,  H01M4/134 ,  H01M10/0525 ,  H01M4/62

    Abstract: Electrodes, production methods and mono-cell batteries are provided, which comprise active material particles embedded in electrically conductive metallic porous structure, dry-etched anode structures and battery structures with thick anodes and cathodes that have spatially uniform resistance. The metallic porous structure provides electric conductivity, a large volume that supports good ionic conductivity, that in turn reduces directional elongation of the particles during operation, and may enable reduction or removal of binders, conductive additives and/or current collectors to yield electrodes with higher structural stability, lower resistance, possibly higher energy density and longer cycling lifetime. Dry etching treatments may be used to reduce oxidized surfaces of the active material particles, thereby simplifying production methods and enhancing porosity and ionic conductivity of the electrodes. Electrodes may be made thick and used to form mono-cell batteries which are simple to produce and yield high performance.

    Diselenoester electrolyte additives for fast charging lithium ion batteries
    16.
    发明授权
    Diselenoester electrolyte additives for fast charging lithium ion batteries 有权

    公开(公告)号：US11575156B2

    公开(公告)日：2023-02-07

    申请号：US16774005

    申请日：2020-01-28

    Applicant: StoreDot Ltd.

    Inventor： Ido Herzog ,  Shirel Cohen ,  Rony Schwarz ,  Eran Sella

    IPC: H01M10/0567 ,  H01M4/505 ,  H01M4/525 ,  H01M4/58 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  H01M4/02

    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.

    Same-solvent preparation of organic anode slurries
    17.
    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.

    MULTI-ELECTROLYTE BATTERY
    18.
    发明申请
    MULTI-ELECTROLYTE BATTERY 有权

    公开(公告)号：US20210336292A1

    公开(公告)日：2021-10-28

    申请号：US17302262

    申请日：2021-04-28

    Applicant: STOREDOT LTD.

    Inventor： Daniel ARONOV ,  Assaf Zehavi ,  Eran Sella

    IPC: H01M10/0562 ,  H01M10/39 ,  H01M10/38

    Abstract: A multi-electrolyte battery, that may include an anode, a cathode, a solid electrolyte positioned between the anode and the cathode, current carriers that comprises an anode current carrier and a cathode current carrier; and at least one other electrolyte. The anode current carrier and the cathode current carrier comprise two external portions that extends outside the anode. The solid electrolyte is sealingly coupled to the two external portions of at least one of the current carriers to define at least one sealed electrolyte, the at least one sealed electrolyte belongs to the at least one other electrolyte.

    PASSIVATED AND/OR PROTECTED SILICON ANODE MATERIAL SLURRIES
    19.
    发明申请
    PASSIVATED AND/OR PROTECTED SILICON ANODE MATERIAL SLURRIES 有权

    公开(公告)号：US20210210747A1

    公开(公告)日：2021-07-08

    申请号：US16732587

    申请日：2020-01-02

    Applicant: Storedot Ltd.

    Inventor： Eran Sella ,  Eynat Matzner ,  Maxim Kagan ,  Yaron Ideses ,  Moria Koren

    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.

    Electrodes made of electrically conductive metallic porous structure with embedded active material particles
    20.
    发明授权
    Electrodes made of electrically conductive metallic porous structure with embedded active material particles 有权

    公开(公告)号：US10586977B1

    公开(公告)日：2020-03-10

    申请号：US16254632

    申请日：2019-01-23

    Applicant: StoreDot Ltd.

    Inventor： Eran Sella ,  Ohad Goldbart ,  Daniel Aronov

    IPC: H01M4/04 ,  H01M4/1395 ,  H01M4/134 ,  H01M10/0525 ,  H01M4/02

    Abstract: Electrodes, production methods and mono-cell batteries are provided, which comprise active material particles embedded in electrically conductive metallic porous structure, dry-etched anode structures and battery structures with thick anodes and cathodes that have spatially uniform resistance. The metallic porous structure provides electric conductivity, a large volume that supports good ionic conductivity, that in turn reduces directional elongation of the particles during operation, and may enable reduction or removal of binders, conductive additives and/or current collectors to yield electrodes with higher structural stability, lower resistance, possibly higher energy density and longer cycling lifetime. Dry etching treatments may be used to reduce oxidized surfaces of the active material particles, thereby simplifying production methods and enhancing porosity and ionic conductivity of the electrodes. Electrodes may be made thick and used to form mono-cell batteries which are simple to produce and yield high performance.

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