Patents Assigned to ENEVATE CORPORATION
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Patent number: 11978894Abstract: Systems and methods for batteries comprising a cathode, an electrolyte, and an anode, wherein the anode is a Si-dominant anode that utilizes water-soluble maleic anhydride- and/or maleic acid-containing polymers/co-polymers, derivatives, and/or combinations (with or without additives) as binders.Type: GrantFiled: August 10, 2021Date of Patent: May 7, 2024Assignee: Enevate CorporationInventors: Liwen Ji, Younes Ansari, Sanjaya D. Perera, Benjamin Park
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Patent number: 11961967Abstract: Electrolytes and electrolyte additives for energy storage devices comprising phosphorus based compounds are disclosed. The energy storage device comprises a first electrode and a second electrode, wherein at least one of the first electrode and the second electrode is a Si-based electrode, a separator between the first electrode and the second electrode, an electrolyte comprising at least two electrolyte co-solvents, wherein at least one electrolyte co-solvent comprises a phosphorus based compound.Type: GrantFiled: October 28, 2019Date of Patent: April 16, 2024Assignee: Enevate CorporationInventors: Liwen Ji, Benjamin Yong Park, Heidi Anderson
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Patent number: 11955623Abstract: Silicon particles for active materials and electro-chemical cells are provided. The active materials comprising silicon particles described herein can be utilized as an electrode material for a battery. In certain embodiments, the composite material includes greater than 0% and less than about 90% by weight of silicon particles. The silicon particles have an average particle size between about 0.1 ?m and about 30 ?m and a surface including nanometer-sized features. The composite material also includes greater than 0% and less than about 90% by weight of one or more types of carbon phases. At least one of the one or more types of carbon phases is a substantially continuous phase.Type: GrantFiled: February 23, 2022Date of Patent: April 9, 2024Assignee: ENEVATE CORPORATIONInventors: Benjamin Yong Park, Alexander Gorkovenko, Rabih Bachir Zaouk, William Hubert Schank, Genis Turon Teixidor, Lothar Steffens
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Patent number: 11949072Abstract: Electrolytes and electrolyte additives for energy storage devices comprising cyanate based compounds are disclosed. The energy storage device comprises a first electrode and a second electrode, wherein at least one of the first electrode and the second electrode is a Si-based electrode, a separator between the first electrode and the second electrode, an electrolyte comprising at least two electrolyte co-solvents, wherein at least one electrolyte co-solvent comprises a cyanate based compound.Type: GrantFiled: February 3, 2020Date of Patent: April 2, 2024Assignee: Enevate CorporationInventors: Liwen Ji, Benjamin Yong Park, Younes Ansari, Hong Zhao
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Patent number: 11942599Abstract: Electrode or electrolyte additives for energy storage devices comprising symmetrical or asymmetrical alkylsulfonyl imide or cyclic alkylene sulfonylimide salts are disclosed. The energy storage device comprises a first electrode and a second electrode, wherein at least one of the first electrode and the second electrode is a Si-based electrode, a separator between the first electrode and the second electrode, and an electrolyte composition. Symmetrical or asymmetrical alkylsulfonyl imide or cyclic alkylene sulfonylimide salts may serve as additives to the electrodes or to the electrolyte composition, or both.Type: GrantFiled: October 22, 2021Date of Patent: March 26, 2024Assignee: Enevate CorporationInventors: Liwen Ji, Benjamin Park
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Patent number: 11923531Abstract: Systems and methods for water soluble weak acidic resins as carbon precursors for silicon-dominant anodes may include an electrode coating layer on a current collector, where the electrode coating layer is formed from silicon and pyrolyzed water-soluble acidic polyamide imide as a primary resin carbon precursor. The electrode coating layer may include a pyrolyzed water-based acidic polymer solution additive. The polymer solution additive may include one or more of: polyacrylic acid (PAA) solution, poly (maleic acid, methyl methacrylate/methacrylic acid, butadiene/maleic acid) solutions, and water soluble polyacrylic acid. The electrode coating layer may include conductive additives. The current collector may include a metal foil, where the metal current collector includes one or more of a copper, tungsten, stainless steel, and nickel foil in electrical contact with the electrode coating layer. The electrode coating layer may be more than 70% silicon.Type: GrantFiled: January 18, 2022Date of Patent: March 5, 2024Assignee: Enevate CorporationInventors: Younes Ansari, Liwen Ji, Benjamin Park
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Patent number: 11923545Abstract: Additives for energy storage devices comprising crown ethers are disclosed. The energy storage device comprises a first electrode and a second electrode, where at least one of the first electrode and the second electrode is a Si-based electrode, a separator between the first electrode and the second electrode, and an electrolyte composition. Crown ether compounds may serve as additives to the first electrode and/or the second electrode, as well as the separator.Type: GrantFiled: September 1, 2021Date of Patent: March 5, 2024Assignee: Enevate CorporationInventors: Liwen Ji, Benjamin Park
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Patent number: 11923506Abstract: Electrolytes and electrolyte additives for energy storage devices comprising an ether compound are disclosed. The energy storage device comprises a first electrode and a second electrode, wherein at least one of the first electrode and the second electrode is a Si-based electrode, a separator between the first electrode and the second electrode, an electrolyte, and at least one electrolyte additive selected from ether compounds.Type: GrantFiled: May 31, 2022Date of Patent: March 5, 2024Assignee: Enevate CorporationInventors: Liwen Ji, Benjamin Yong Park, Heidi Anderson, Sung Won Choi
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Patent number: 11916228Abstract: In some embodiments, an electrode can include a current collector, a composite material in electrical communication with the current collector, and at least one phase configured to adhere the composite material to the current collector. The current collector can include one or more layers of metal, and the composite material can include electrochemically active material. The at least one phase can include a compound of the metal and the electrochemically active material. In some embodiments, a composite material can include electrochemically active material. The composite material can also include at least one phase configured to bind electrochemically active particles of the electrochemically active material together. The at least one phase can include a compound of metal and the electrochemically active material.Type: GrantFiled: June 6, 2022Date of Patent: February 27, 2024Assignee: Enevate CorporationInventors: David Lee, Xiaohua Liu, Monika Chhorng, Jeff Swoyer, Benjamin Yong Park, Rahul Kamath
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Patent number: 11916218Abstract: Systems and methods for use of nitrogen as a stabilization gas of polyacrylonitrile are disclosed and may include forming an active material layer comprising silicon particles and polyacrylonitrile (PAN), and heating the active material layer including PAN using nitrogen as a stabilization gas. The active material layer may be pyrolyzed at a temperature of 500° C. or more or between 500° C. and 750° C. The active material layer may be pyrolyzed by heating in a nitrogen gas environment or an argon gas environment. The active material layer may include 50% or more silicon by weight. The active layer may be heated at a temperature of 350° C. or more, at a temperature of 300° C. or more, or a temperature of 250° C. or more. A battery may include the electrode. The active material layer may be on a metal current collector that includes one or more of: copper, nickel, and aluminum.Type: GrantFiled: November 5, 2020Date of Patent: February 27, 2024Assignee: ENEVATE CORPORATIONInventor: Frederic Bonhomme
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Patent number: 11908992Abstract: Methods and systems for forming electrochemical cells are provided. An electrochemical cell may be provided, with the electrochemical cell including a first electrode, a second electrode, a separator between the first electrode and the second electrode, and an electrolyte. At least the first electrode is a silicon-dominant electrode. A formation process may be used for the electrochemical cell, with the processing including at least a charge step that includes providing a formation charge current at greater than about 1C to the electrochemical cell, where providing the formation charge current includes charging to a partial formation.Type: GrantFiled: April 18, 2022Date of Patent: February 20, 2024Assignee: ENEVATE CORPORATIONInventors: Benjamin Yong Park, Ian Russell Browne, Heidi Leighette Anderson
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Patent number: 11909058Abstract: A method for formation of cylindrical and prismatic can cells may include providing a battery, where the battery includes one or more cells, with each cell including at least one silicon-dominant anode, a cathode, and a separator. The battery also includes a metal can that contains the one or more cells such that during formation a pressure between 50 kPa and 1 MPa is applied to the one or more cells. The battery may include strain absorbing materials arranged between the one or more cells and interior walls of the can. The strain absorbing materials may include foam. The strain absorbing materials may include a solid electrolyte layer. The strain absorbing materials may include PMMA, PVDF, or a combination thereof. The pressure during a formation process may be due to a thickness of the strain absorbing materials being thicker than an expansion of the one or more cells.Type: GrantFiled: January 24, 2023Date of Patent: February 20, 2024Assignee: Enevate CorporationInventors: Sanjaya D. Perera, Benjamin Park
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Patent number: 11901508Abstract: Electrolytes and electrolyte additives for energy storage devices comprising a sulfonate ester compound are disclosed. The energy storage device comprises a first electrode and a second electrode, wherein at least one of the first electrode and the second electrode is a Si-based electrode, a separator between the first electrode and the second electrode, an electrolyte, and at least one electrolyte additive selected from a sulfonate ester compound.Type: GrantFiled: August 29, 2022Date of Patent: February 13, 2024Assignee: Enevate CorporationInventors: Liwen Ji, Benjamin Yong Park
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Patent number: 11901500Abstract: In some embodiments, an electrode can include a first and second conductive layer. At least one of the first and second conductive layers can include porosity configured to allow electrolyte to flow therethrough. The electrode can also include an electrochemically active layer having electrochemically active material sandwiched between the first and second conductive layers. The electrochemically active layer can be in electrical communication with the first and second conductive layers.Type: GrantFiled: June 10, 2020Date of Patent: February 13, 2024Assignee: Enevate CorporationInventors: Xiaohua Liu, Giulia Canton, David J. Lee, Shiang Teng, Benjamin Yong Park
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Patent number: 11901543Abstract: Systems and methods are provided for carbon additives for direct coating of silicon-dominant anodes. An example composition for use in directly coated anodes may include a silicon-dominated anode active material, a carbon-based binder, and a carbon-based additive, with the composition being configured for low-temperature pyrolysis. The low-temperature pyrolysis may be conducted at <600° C. An anode may be formed using a direct coating process of the composition on a current collector. The anode active material yields silicon constituting between 86% and 97% of weight of the formed anode after pyrolysis. The carbon-based additive yields carbon constituting between 2% and 6% of weight of the formed anode after pyrolysis.Type: GrantFiled: September 15, 2022Date of Patent: February 13, 2024Assignee: ENEVATE CORPORATIONInventors: Monika Chhorng, David J. Lee, Rahul Kamath
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Patent number: 11901748Abstract: Systems and methods are provided for state-of-charge balancing in battery management systems for Si/Li batteries. State-of-charge (SOC) of one or more lithium-ion cells may be assessed, and based on the assessing of the SOC, the one or more lithium-ion cells may be controlled. The controlling may include setting or modifying one or more operating parameters of at least one lithium-ion cell, and the controlling may be configured to equilibrate the SOC of the one or more lithium-ion cells or to modify an SOC of at least one lithium-ion cell so that the one or more lithium-ion cells have a balanced SOC.Type: GrantFiled: February 2, 2022Date of Patent: February 13, 2024Assignee: Enevate CorporationInventors: Samuel Keene, Benjamin Yong Park, Samer Saab
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Patent number: 11894519Abstract: Electrolytes and electrolyte additives for energy storage devices comprising linear carbonate compounds.Type: GrantFiled: September 27, 2022Date of Patent: February 6, 2024Assignee: Enevate CorporationInventors: Liwen Ji, Benjamin Yong Park, Sung Won Choi, Heidi Anderson
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Patent number: 11888114Abstract: Electrolytes and electrolyte additives for energy storage devices comprising fluorinated polymers. The electrolytes may be used in an energy storage device comprising a first electrode and a second electrode, where at least one of the first electrode and the second electrode is a Si-based electrode, a separator between the first electrode and the second electrode, and the electrolyte.Type: GrantFiled: July 16, 2021Date of Patent: January 30, 2024Assignee: Enevate CorporationInventors: Liwen Ji, Benjamin Yong Park, Heidi Anderson
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Patent number: 11881559Abstract: An energy storage device comprising a first electrode and a second electrode, wherein at least one of the first electrode and the second electrode comprises a self-supporting composite material film, a separator between the first electrode and the second electrode, and an electrolyte in contact with the first electrode, the second electrode, and the separator, wherein the electrolyte comprises at least one of a fluorine-containing cyclic carbonate, a fluorine-containing linear carbonate, and a fluoroether. The composite material film having greater than 0% and less than about 90% by weight of silicon particles, and greater than 0% and less than about 90% by weight of one or more types of carbon phases. At least one of the one or more types of carbon phases can be a substantially continuous phase that holds the composite material film together such that the silicon particles are distributed throughout the composite material film.Type: GrantFiled: November 17, 2021Date of Patent: January 23, 2024Assignee: Enevate CorporationInventors: Heidi Leighette Anderson, Benjamin Yong Park, Hong Gan, Sung Won Choi
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Patent number: 11876158Abstract: Systems and methods for an ultra-high voltage cobalt-free cathode for alkali ion batteries may include an anode, a cathode, and a separator, with the cathode comprising an active material ANi(1-x)MnxSbOy, where x is a number between 0.0 and 1.0, y is an integer, and A comprises one or more of lithium, sodium, and potassium. The anode may include one or more of an alkali metal, silicon, and carbon. In one example, x is a value in the range between 0.05 and 0.9 and y is a value in the range between 1 and 8 where a specific capacity of the active material is greater than 50 milliamp-hours per gram. In another example, x is a value in the range between 0.4 and 0.6 and y is a value in the range between 1 and 8, where a specific capacity of the active material is greater than 70 milliamp-hours per gram.Type: GrantFiled: June 25, 2019Date of Patent: January 16, 2024Assignee: ENEVATE CORPORATIONInventors: Younes Ansari, Liwen Ji, Jill Renee Pestana, Benjamin Park