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公开(公告)号：US11831012B2
公开(公告)日：2023-11-28
申请号：US16394112
申请日：2019-04-25
申请人： StoreDot Ltd.
发明人： Ohad Goldbart , Nitzan Shadmi , Hani Farran , Daniel Aronov
IPC分类号： H01M4/38 , H01M10/0525 , H01M4/36 , H01M4/62 , H01M4/136 , H01M4/1397 , H01M4/02 , H01M4/04 , H01M4/134
CPC分类号： H01M4/386 , H01M4/136 , H01M4/1397 , H01M4/364 , H01M4/621 , H01M4/625 , H01M10/0525 , H01M4/0471 , H01M4/134 , H01M4/366 , H01M4/622 , H01M4/623 , H01M2004/027 , H01M2004/028 , Y02E60/10
摘要： 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.
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公开(公告)号：US11652200B2
公开(公告)日：2023-05-16
申请号：US16735721
申请日：2020-01-07
申请人： StoreDot Ltd.
发明人： Shaked Rosenne , Ron Paz , Nir Kedem , Doron Burshtain , Nir Baram , Nir Pour , Daniel Aronov
IPC分类号： H01M4/04 , H01M10/0525 , H01M4/02
CPC分类号： H01M4/0447 , H01M10/0525 , H01M2004/028
摘要： 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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公开(公告)号：US11502295B2
公开(公告)日：2022-11-15
申请号：US16732506
申请日：2020-01-02
申请人： Storedot Ltd.
发明人： Eran Sella , Eynat Matzner , Tal Chen , Michael Kulbak
摘要： 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.
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公开(公告)号：US11275265B2
公开(公告)日：2022-03-15
申请号：US15691775
申请日：2017-08-31
申请人： StoreDot Ltd.
发明人： Daniel Szwarcman , Ziv Sobol
IPC分类号： C09K11/06 , G02F1/1335 , C09B11/24 , C09B69/00 , C09B11/12 , G02F1/13357 , C09K11/02 , C09B67/44 , G03F7/00 , C09B69/10 , C09B62/465 , G03F7/105 , C08G83/00
摘要： 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. Film integration and display configurations further enhance the display performance with color conversion films utilizing various color conversion elements and possibly patterned and/or integrated with a crosstalk blocking matrix. For example, color conversion and/or assistant dyes may be used to enhance spectral regions transmitted through the color filters and shape the illumination spectrum, to improve efficiency and performance.
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公开(公告)号：US20210399371A1
公开(公告)日：2021-12-23
申请号：US17304648
申请日：2021-06-23
申请人： STOREDOT LTD
发明人： Assaf ZEHAVI , Nir Dolev , Tzemah KISLEV
IPC分类号： H01M50/186 , H01M10/04 , H01M50/184
摘要： A method for managing gas generated during a formation phase of a cell that is a hard-case electrochemical cell, the method may include supplying electrolyte to the cell; initially charging and discharging the cell during a formation phase; and permanently sealing the cell; wherein the method further comprises temporarily sealing the electrolyte during the formation phase.
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公开(公告)号：US11152602B2
公开(公告)日：2021-10-19
申请号：US16689261
申请日：2019-11-20
申请人： StoreDot Ltd.
摘要： Methods and systems are provided for estimating and extending the expected cell cycling lifetime for produced lithium ion cells. Methods comprise monitoring charging and/or discharging peak(s) during formation cycles of the cells, which are defined with respect to dQ/dV measurements during the formation cycles, and ending the formation process once the charging and/or discharging peaks disappear, optionally deriving the expected cell cycling lifetime by comparing the monitored peaks to specified thresholds that are correlated to the lifetime. The methods may be implemented by controller(s) at the battery, device and/or factory levels, which may be operated in combination. Formation processes and/or cell operation schemes may be adjusted accordingly, to avoid excessive dQ/dV rates and increase thereby the cell cycling lifetime.
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公开(公告)号：US11128152B2
公开(公告)日：2021-09-21
申请号：US15678143
申请日：2017-08-16
申请人： StoreDot Ltd.
发明人： Daniel Aronov , Leonid Krasovitsky
摘要： The present invention discloses systems and methods for adaptive fast-charging for mobile devices and devices having sporadic power-source connection. Methods include the steps of: firstly determining whether a supercapacitor of a device is charged; upon detecting the supercapacitor is charged, secondly determining whether a battery of the device is charged; and upon detecting the battery is not charged, firstly charging the battery from the supercapacitor. Preferably, the step of firstly determining includes whether the supercapacitor is partially charged, and the step of secondly determining includes whether the battery is partially charged. Preferably, the step of firstly charging is adaptively regulated to perform a task selected from the group consisting of: preserving a lifetime of the battery by controlling a current to the battery, and discharging the supercapacitor in order to charge the battery. Preferably, the discharging enables the supercapacitor to be subsequently recharged.
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68.发明申请公开(公告)号：US20210242500A1
公开(公告)日：2021-08-05
申请号：US16774003
申请日：2020-01-28
申请人： StoreDot Ltd.
发明人： Nir KEDEM , Liron AMIR , Evgenia Liel (Jeny) KUKS , Ido HERZOG , Shirel COHEN , Rony SCHWARZ , Eran SELLA
IPC分类号： H01M10/0569 , H01M10/0525 , H01M10/0567 , H01M4/38
摘要： 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.
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公开(公告)号：US11069918B2
公开(公告)日：2021-07-20
申请号：US16157128
申请日：2018-10-11
申请人： StoreDot Ltd.
IPC分类号： H01M10/052 , H01M10/0569 , H01M10/0567
摘要： Electrolytes, lithium ion cells and corresponding methods are provided, for extending the cycle life of fast charging lithium ion batteries. The electrolytes are based on fluoroethylene carbonate (FEC) and/or vinylene carbonate (VC) as the cyclic carbonate component, and possibly on ethyl acetate (EA) and/or ethyl methyl carbonate (EMC) as the linear component. Proposed electrolytes extend the cycle life by factors of two or more, as indicated by several complementary measurements.
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公开(公告)号：US10916811B2
公开(公告)日：2021-02-09
申请号：US16268527
申请日：2019-02-06
申请人： StoreDot Ltd.
发明人： Doron Burshtain , Daniel Aronov , Eran Sella
IPC分类号： H01M10/42 , H01M10/0525 , H01M10/0567 , H01M10/0562
摘要： 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.
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