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1397
resultados
Última actualización
15/12/2025 [07:10:00]
Resultados 775 a 800 de 1397
Resumen de: US2025372628A1
Disclosed are a positive electrode, a preparation method thereof, and a rechargeable lithium battery including the positive electrode. The positive electrode includes a positive electrode current collector, a positive electrode active material layer on the positive electrode current collector, and a positive electrode coating layer between the positive electrode current collector and the positive electrode active material layer. The positive electrode coating layer includes a graphite-based material, a phosphorus-based extinguishing agent, and a binder, and the positive electrode coating layer includes about 1 part by weight to about 45 part by weight of the phosphorus-based extinguishing agent based on 100 parts by weight of a total of the graphite-based material and the phosphorus-based extinguishing agent.
Resumen de: US2025372625A1
A negative electrode for nonaqueous electrolyte secondary batteries comprises a negative electrode mixture layer and is characterized in that: the negative electrode mixture layer comprises a first negative electrode mixture layer, and a second negative electrode mixture layer; the first negative electrode mixture layer contains graphite particles A; the second negative electrode mixture layer contains the graphite particles A and graphite particles B which have a lower internal void fraction than the graphite particles A; the second negative electrode mixture layer comprises a first region and a second region; the content ratio of the graphite particles B in the first region is higher than the content ratio of the graphite particles in the second region; and the ratio (T1/T2) of the thickness (T1) of the first negative electrode mixture layer to the thickness (T2) of the second negative electrode mixture layer is within the range of 0.66 to 4.00.
Resumen de: US2025372749A1
A solid-state battery includes two or more stacked battery units. Each battery unit includes a first current collector, a first active material layer, a solid electrolyte layer, a second active material layer, a second current collector, a second active material layer, a solid electrolyte layer, a first active material layer, and a first current collector, which are stacked in this order. The two or more stacked battery units include an adhesive portion that adheres first current collectors opposed to each other in a stacking direction between adjacent battery units. A peel strength of the adhesive portion is less than a peel strength in the battery unit.
Resumen de: US2025372838A1
Disclosed is a battery capable of improving connectivity between a terminal and a current collector part while improving structural efficiency around them. The battery of the present disclosure includes an electrode laminate, a current collector part, and a terminal. The electrode laminate is electrically connected to the terminal via the current collector part. The terminal includes a base and a protrusion. The base has a first surface facing the electrode laminate and a second surface opposite the first surface. The protrusion protrudes from the base toward the electrode laminate. The protrusion includes a first protrusion and a second protrusion. The first protrusion has a third surface facing the second protrusion. The second protrusion has a fourth surface facing the first protrusion. The current collector part is in contact with one or both of the first surface and the third surface. The second protrusion is welded to the base.
Resumen de: US2025372652A1
Provided is a binder composition for an all-solid-state secondary battery that can reduce internal resistance of an all-solid-state secondary battery while also imparting excellent adhesiveness to a functional layer for an all-solid-state secondary battery. The binder composition for an all-solid-state secondary battery contains a copolymer including a nitrile group-containing monomer unit and a solvent. The solvent includes an ester solvent having a carbon number of 6 or more. Proportional content of the nitrile group-containing monomer unit in the copolymer is 10 mass % to 22 mass % when all repeating units in the copolymer are taken to be 100 mass %. The copolymer has a tetrahydrofuran-insoluble fraction of 0.5 mass % to 3 mass %, and a copolymer solution obtained when the copolymer is dissolved in the solvent such that concentration of the copolymer is 8 mass % has a haze of 30% to 80%.
Resumen de: US2025372734A1
A bus connector for an energy storage system is provided. The bus connector includes a printed circuit board including a first plurality of metal plates, a second plurality of metal plates, a plurality of bus taps, a plurality of conducting stripes, and a temperature sensor. The first plurality of metal plates is coupled to first terminals of the first battery module. The second plurality of metal plates is coupled to second terminals of the second battery module. Each of the first plurality of metal plates, each of the second plurality of metal plates, and the temperature sensor are connected to a respective bus tap of the plurality of bus taps through a respective conducting stripe of the plurality of conducting stripes. The temperature sensor is configured to sense a temperature of at least one of the first battery module and the second battery module.
Resumen de: US2025372744A1
Disclosed are approaches for recycling LIBs where lithium is recovered before the other node metals in order to increase the amount of lithium recovered. For such approaches, the other node metals need not be further refined or recovered and, despite the small loss of these other node metals as impurities in the first-recovered lithium, the available alternative dispositions for these other node metals—such as in the form of multi-metal-oxides (MMO)—can render the recovery of lithium before the other node metals to be advantageous. Several such approaches may feature nitration, roasting, lithium trapping, and/or other innovative features to facilitate greater and purer recoveries of the target LIB components.
Resumen de: US2025372716A1
Improved battery systems with two-additive mixtures including in an electrolyte solvent that is a carbonate solvent, an organic solvent, a non-aqueous solvent, methyl acetate, or a combination of them. The positive electrode of the improved battery systems may be formed from lithium nickel manganese cobalt compounds, and the negative electrode of the improved battery system may be formed from natural or artificial graphite.
Resumen de: US2025372747A1
Disclosed are approaches for recycling LIBs where lithium is recovered before the other node metals in order to increase the amount of lithium recovered. For such approaches, the other node metals need not be further refined or recovered and, despite the small loss of these other node metals as impurities in the first-recovered lithium, the available alternative dispositions for these other node metals—such as in the form of multi-metal-oxides (MMO)—can render the recovery of lithium before the other node metals to be advantageous. Several such approaches may feature nitration, roasting, lithium trapping, and/or other innovative features to facilitate greater and purer recoveries of the target LIB components.
Resumen de: US2025372750A1
A battery pack thermal runaway suppression system positioned in a battery pack and including a bladder located proximate a plurality of battery cells that contains a fire-retardant material, a plurality of first blades configured to pierce the bladder to release the fire-retardant material within the housing, a plurality of second blades configured to pierce at least one of the coolant inlet line, heat sink, and coolant outlet line to release the coolant within the housing, and a plurality of actuation devices that are configured to actuate the plurality of first blades and plurality of second blades.
Resumen de: US2025372644A1
The present invention relates to the field of lithium batteries, in particular to a lithium-ion battery positive electrode and a lithium-ion battery. The positive electrode comprises a positive electrode current collector and a positive electrode material on the positive electrode current collector, the positive electrode material comprising a positive electrode active material, the positive electrode active material at least comprising a polycrystalline ternary material and a monocrystalline ternary material.
Resumen de: US2025372844A1
A battery cell, a battery, and an electrical device are described. The battery cell includes a shell, an electrode assembly, a first insulating protective layer, and a second insulating protective layer. The first insulating protective layer is disposed on an inner wall of the shell, and the second insulating protective layer is configured to envelop at least a portion of the electrode assembly. The battery cell provided in the embodiments of the present application uses the first insulating protective layer and the second insulating protective layer to separate the shell from the electrode assembly, thereby increasing the creepage distance between the shell and the electrode assembly. This can achieve the purpose of improving the breakdown voltage resistance between the shell and the electrode assembly, thereby effectively enhancing the high-voltage breakdown resistance of the shell, and consequently reducing the probability of combustion or explosion of the battery cell.
Resumen de: US2025372847A1
A battery cell includes a housing and a protective member. The housing includes a case and an end cover. An opening is formed in at least one end of the case in a first direction, and the end cover closes the opening. The end cover is connected to the case to form a connection portion. The protective member includes a main body portion and a first flange portion. The main body portion surrounds an outer surface of the case. In the first direction, the first flange portion is connected to an end of the main body portion, and the first flange portion is disposed on the end cover and covers at least a part of the connection portion. The main body portion of the protective member surrounds the outer surface of the case such that the case can be protected, thereby reducing the risk of damage to the case.
Resumen de: US2025372701A1
A solid state electrolyte (SSE) including a dense membrane including LLZO having a thickness equal to or lower than 100 μm and a Sb-including coating layer having a thickness between 1 and 20 nm provided on a surface of the dense membrane, the dense membrane having a density equal to or higher than 90% of the theoretical density of the membrane, wherein the surface of dense membrane onto which the coating layer is provided is substantially free of Li2CO3, wherein the SSE comprises a first Li—Sb alloy at the interface of the Sb-including coating layer and the LLZO-including dense membrane, wherein the thicknesses are as calculated from SEM images of the SSE. Also, a solid state battery (SSB) including the SSE and to methods of producing the SSE and the SSB.
Resumen de: US2025372648A1
The present disclosure relates to a secondary battery and a method for preparing the same, a battery pack, an energy storage system, and an electric apparatus. The secondary battery includes cathode active particles. The cathode active particles include a core and a carbon layer coating the core, and the core includes at least one of a lithium transition metal phosphate and a lithium transition metal oxide. Part of the cathode active particles are cracked, an average width of cracks is in a range of 10 nm to 30 nm, and an average length thereof is in a range of 300 nm to 800 nm.
Resumen de: US2025372626A1
Provided are a composite cathode active material for lithium secondary batteries with excellent coating quality and a method of preparing the same. The composite cathode active material comprises a core portion of a lithium transition metal compound and a shell portion of a sulfide-based solid electrolyte with a cohesive index between about 37 and 46. The shell constitutes about 2% to 10% by weight of the composite, with a thickness of about 50 nm to 500 nm and a planar density of about 0.05 mg/cm2 to 0.3 mg/cm2, determined by X-ray fluorescence spectrometry. The preparation method includes coating the core with the sulfide-based solid electrolyte through controlled mixing, stirring, and heat treatment, ensuring uniform and consistent coating quality. This composite material enhances the performance of lithium secondary batteries by improving the cathode's stability, ion conductivity, and overall electrochemical properties.
Resumen de: US2025372624A1
A negative electrode active material, a method for preparing the same, a negative electrode composition and a negative electrode including the same, and a lithium secondary battery including the negative electrode are provided.
Resumen de: US2025372623A1
The present invention relates to a positive active material including: a lithium transition metal oxide which is in the form of a single particle and divided into a surface part and a core; and a coating part which is formed on the surface part and contains cobalt, wherein the surface part includes an oxidation number gradient layer in which the oxidation number of nickel (Ni) increases toward the outermost surface, and a method for producing the same.
Resumen de: US2025372619A1
The present invention relates to a negative electrode active material, a negative electrode including the same, a secondary battery including the negative electrode, and a method for manufacturing a negative electrode active material.
Resumen de: US2025372841A1
A battery cell may include an electrode assembly in which a first electrode and a second electrode are wound around a winding axis while a separator is interposed therebetween, the first electrode including a first non-coated portion that is not coated with an active material layer, a battery housing accommodating the electrode assembly therein, a collector including a support portion disposed on an upper portion of the electrode assembly, a tap coupling portion, a housing coupling portion including at least one welded portion welded to the inner surface of the between housing, and a housing cover configured to cover the opening, wherein the number of welded portions may be smaller than or equal to the number of tap coupling portions, or wherein a breaking portion configured to have lower strength than the surrounding area may be provided at the boundary between the support portion and the housing coupling portion.
Resumen de: US2025372603A1
An electrode sheet manufacturing method includes a stepped roll pressing step of conveying an electrode sheet while pressing the electrode sheet onto a stepped roll that has a larger diameter at a part coming into contact with a boundary region of an uncoated portion with an active material layer than other parts coming into contact with other regions of the electrode sheet.
Resumen de: US2025372707A1
Provided is a non-aqueous electrolyte capable of inhibiting an increase in battery resistance when repeating charge/discharge cycles. The non-aqueous electrolyte includes a compound represented by the following Chemical Formula 1:wherein R1 represents a C3-C20 linear or branched alkylene group, and each of R2 to R5 independently represents a hydrogen atom, a halogen atom or a C1-C5 alkyl group.
Resumen de: US2025372604A1
For an electrode sheet manufacturing apparatus, a pressure roll is disposed so as to hold an unformed portion of the electrode sheet between the pressure roll and a support roll, except for a portion of the electrode sheet on which an active material layer is formed. The pressure roll is a rubber roll at least an outer circumferential surface of which is made of a rubber. The rubber satisfies the following expression: y1≥y2>0.8×y1, where y1 is the modulus of longitudinal elasticity of the rubber at 25° C. and y2 is the modulus of longitudinal elasticity of the rubber at 60° C.
Resumen de: US2025372703A1
A method for producing a sulfide solid electrolyte composite includes: adding a metal compound to a solution containing at least one sulfide solid electrolyte raw material and dispersing the metal compound or a compound derived from the metal compound to obtain a metal dispersion liquid; removing a solvent of the metal dispersion liquid to obtain a composite powder of the metal compound or the compound derived from the metal compound and the sulfide solid electrolyte raw material; and obtaining the sulfide solid electrolyte composite using the composite powder.
Nº publicación: US2025372594A1 04/12/2025
Solicitante:
TOYOTA MOTOR CO LTD [JP]
TOYOTA JIDOSHA KABUSHIKI KAISHA
Resumen de: US2025372594A1
A method for producing a bipolar electrode includes obtaining a bipolar electrode respectively having a positive electrode mixture layer and a negative electrode mixture layer at both surfaces of an electrode foil through: a positive electrode mixture coating step of coating a positive electrode mixture coating liquid on one surface of an electrode foil and drying the positive electrode mixture coating liquid, to form a positive electrode mixture coating film; a first pressing step of pressing the electrode foil having the positive electrode mixture coating film; a negative electrode mixture coating step of coating a negative electrode mixture coating liquid on another surface of the electrode foil by a screen printing method and drying the negative electrode mixture coating liquid, to form a negative electrode mixture coating film; and a second pressing step of pressing the electrode foil having the negative electrode mixture coating film.
BOPI
Sede Electrónica
