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    Semi-solid electrolytes with flexible particle coatings
    72.
    发明授权
    Semi-solid electrolytes with flexible particle coatings 有权

    公开(公告)号：US10916811B2

    公开(公告)日：2021-02-09

    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 ,  H01M10/0562

    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.

    PASSIVATED SILICON-BASED ANODE MATERIAL PARTICLES
    73.
    发明申请
    PASSIVATED SILICON-BASED ANODE MATERIAL PARTICLES 审中-公开

    公开(公告)号：US20200343543A1

    公开(公告)日：2020-10-29

    申请号：US16394112

    申请日：2019-04-25

    Applicant: StoreDot Ltd.

    Inventor： Ohad GOLDBART ,  Nitzan SHADMI ,  Hani FARRAN ,  Daniel ARONOV

    IPC: H01M4/38 ,  H01M10/0525 ,  H01M4/36 ,  H01M4/62 ,  H01M4/136 ,  H01M4/1397

    Abstract: Methods, anode material particles, mixtures, anodes and lithium-ion batteries are provided, having passivated silicon-based particles that enable processing in oxidizing environments such as water-based slurries. Methods comprise forming a mixture of silicon particles with nanoparticles (NPs) and a carbon-based binders and/or surfactants, wherein the NPs comprise at least one of: metalloid oxide NPs, metalloid salt NPs and carbon NPs, reducing the mixture to yield a reduced mixture comprising coated silicon particles with a coating providing a passivation layer (possibly amorphous), and consolidating the reduced mixture to form an anode. It is suggested that the NPs provide nucleation sites for the passivation layer on the surface of the silicon particles—enabling significant anode-formation process simplifications such as using water-based slurries—enabled by disclosed methods and anode active material particles.

    LITHIUM POLY(ACRYLIC ACID) BINDERS FOR ANODES OF FAST CHARGING LITHIUM ION BATTERIES
    75.
    发明申请
    LITHIUM POLY(ACRYLIC ACID) BINDERS FOR ANODES OF FAST CHARGING LITHIUM ION BATTERIES 审中-公开

    公开(公告)号：US20200255557A1

    公开(公告)日：2020-08-13

    申请号：US16711484

    申请日：2019-12-12

    Applicant: Storedot Ltd.

    Inventor： Eran SELLA ,  Maxim KAGAN ,  Ekaterina GOTLIB VAINSHTEIN

    IPC: C08F20/06 ,  H01M4/38 ,  H01M4/62 ,  H01M10/0525

    Abstract: Li-PAA (lithium poly(acrylic acid)) powders, electrode binders and methods of preparation thereof are provided. The Li-PAA powders have a low PDI (polydispersity index), e.g., smaller than 4 or 5, possibly a high Mw, and are configured to have a lithium content of above 7%, a pH between 8.5 and 9.5, or between 8.7 and 9.1 when dissolved 15% w/w in water and/or possibly a white color. Preparation methods comprise adding a PAA solution into a LiOH solution and stirring a resulting Li-PAA solution, and precipitating Li-PAA from the resulting Li-PAA solution, sieving or filtering and then drying the precipitated Li-PAA to yield the Li-PAA powder, which may be used as binder for forming electrodes. Advantageously, resulting electrodes are uniform and mechanically stable when used with metalloid anode material particles which exhibit high expansion and contraction when used in fast charging lithium ion batteries.

    ANODE PREPARATION SYSTEM APPLYING DRY ETCHING TREATMENT TO THE ANODES
    76.
    发明申请
    ANODE PREPARATION SYSTEM APPLYING DRY ETCHING TREATMENT TO THE ANODES 审中-公开

    公开(公告)号：US20200243845A1

    公开(公告)日：2020-07-30

    申请号：US16504273

    申请日：2019-07-07

    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.

    MONO-CELL BATTERIES
    77.
    发明申请
    MONO-CELL BATTERIES 审中-公开

    公开(公告)号：US20200243842A1

    公开(公告)日：2020-07-30

    申请号：US16258733

    申请日：2019-01-28

    Applicant: StoreDot Ltd.

    Inventor： Daniel ARONOV

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

    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.

    Fast-charging lithium ion batterie unit
    78.
    发明授权
    Fast-charging lithium ion batterie unit 有权

    公开(公告)号：US10601070B2

    公开(公告)日：2020-03-24

    申请号：US16012781

    申请日：2018-06-20

    Applicant: StoreDot Ltd.

    Inventor： Leonid Krasovitsky ,  Vladimir Seleznyov ,  Daniel Aronov

    IPC: H02J7/00 ,  H01M10/0525 ,  H01M4/04 ,  H01M10/42 ,  G01R31/382 ,  H02J7/04 ,  H01M10/44 ,  H01M10/04

    Abstract: Methods, systems and battery modules are provided, which increase the cycling lifetime of fast charging lithium ion batteries. During the formation process, the charging currents are adjusted to optimize the cell formation, possibly according to the characteristics of the formation process itself, and discharge extents are partial and optimized as well, as is the overall structure of the formation process. During operation, voltage ranges are initially set to be narrow, and are broadened upon battery deterioration to maximize the overall lifetime. Current adjustments are applied in operation as well, with respect to the deteriorating capacity of the battery. Various formation and operation strategies are disclosed, as basis for specific optimizations.

    Protective layers produced by sol gel processes
    80.
    发明授权
    Protective layers produced by sol gel processes 有权

    公开(公告)号：US10473968B2

    公开(公告)日：2019-11-12

    申请号：US15353453

    申请日：2016-11-16

    Applicant: StoreDot Ltd.

    Inventor： Daniel Szwarcman ,  Elad Cohen ,  Mor Shmuel Armon ,  Evgenia Liel (Jeny) Kuks ,  Rony Schwarz ,  Elena Eisurovich ,  Daniel Aronov ,  Eran Sella

    IPC: G02F1/1335 ,  G02B1/14 ,  C09K11/06 ,  C09D185/00

    Abstract: Color conversion films for a LCD (liquid crystal display) having RGB (red, green, blue) color filters, as well as such displays, formulations, precursors and methods are provided, which improve display performances with respect to color gamut, energy efficiency, materials and costs. The color conversion films absorb backlight illumination and convert the energy to green and/or red emission at high efficiency, specified wavelength ranges and narrow emission peaks. For example, rhodamine-based fluorescent compounds are used in matrices produced by sol gel processes and/or UV (ultraviolet) curing processes which are configured to stabilize the compounds and extend their lifetime—to provide the required emission specifications of the color conversion films. Film integration and display configurations further enhance the display performance with color conversion films utilizing various color conversion elements.

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