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1679
resultados
Última actualización
20/12/2024 [10:03:00]
Resultados 50 a 75 de 1679
Resumen de: US2024421433A1
A method for producing an electrode separator composite, which is a component of an electrode separator stack for a battery cell, and which electrode separator composite is formed of at least one electrode layer and at least one separator layer. The method comprises the following steps: a laying process, in which the electrode and separator layers are laid on top of one another; and a joining process, with which an adhesive connection is formed between the electrode and separator layers laid on top of one another. The joining process involves a plasma treatment, in which there is a surface activation of the electrode and/or separator layers using plasma, such that an adhesive connection is provided between the respective joining partners.
Resumen de: US2024421429A1
Provided are a separator, a method of manufacturing the separator, and an electrochemical device including the separator. According to an embodiment of the present disclosure, a separator including a porous substrate and an inorganic particle layer provided on at least one surface of the porous substrate, the inorganic particle layer including inorganic particles, a hydrolytic condensate binder of a polar silane compound, and an aqueous polymer binder, wherein an amount of change in peel strength, ΔP is 1.1 or more may be provided.
Resumen de: US2024421428A1
Disclosed is an electrochemical apparatus. The present disclosure relates to the field of electrochemical energy storage technologies. In the present disclosure, a positive electrode electrolyte solution and a negative electrode electrolyte solution are separated by a solid electrolyte membrane. A high content of a nitrile compound is added to the positive electrode electrolyte solution. A high content of an ether compound is added to the negative electrode electrolyte solution. The nitrile compound may effectively improve stability of a positive electrode interface. The ether compound may effectively improve stability of a negative electrode interface. In this way, a cycle life of an electrochemical apparatus is improved, and in particular, a cycle life of an electrochemical apparatus including metal lithium in a negative electrode is improved.
Resumen de: US2024421303A1
A plurality of porous carbon/semiconductor nanowire particulates and production processes, wherein a particulate comprises (i) a porous carbon matrix or shell; (ii) semiconductor nanowires dispersed in the carbon matrix or encapsulated by the carbon shell, wherein the nanowires have a diameter or thickness from 5 nm to 1 μm (preferably from 10 nm to 500 nm); and (iii) pores surrounded by or adjacent to the semiconductor nanowires; wherein the semiconductor nanowires occupy a weight fraction from 1% to 99% of the particulate and the semiconductor material and the catalytic metal form an eutectic point in a phase diagram; and wherein the pores have a non-zero residual pore volume, Vp, unoccupied by the carbon or semiconductor nanowires and the semiconductor nanowires have a total volume of Vn, having a Vp/Vn ratio from 0.01 to 10 (preferably from 0.1 to 5.0 and most preferably from 0.3 to 4.0).
Resumen de: US2024421310A1
A binder composition for a non-aqueous secondary battery negative electrode contains a particulate polymer and water. The particulate polymer is formed of a polymer including an ethylenically unsaturated carboxylic acid monomer unit, an aromatic vinyl monomer unit, and an alkylene structural unit. A binder film formed using the binder composition for a non-aqueous secondary battery negative electrode displays a maximum displacement of 30 μm or less when the binder film compressed to a maximum load of 20 mN at a loading rate of 0.2975 mN/s using a micro compression tester.
Resumen de: US2024421309A1
The present disclosure relates to a multilayer negative electrode comprising a negative electrode current collector configured to transfer electrons between an outer lead and a negative electrode active material, a first negative electrode mixture layer formed on one surface or both surfaces of the current collector and containing natural graphite as a negative electrode active material and a second negative electrode mixture layer formed on the first negative electrode mixture layer and containing artificial graphite as a negative electrode active material, and a lithium secondary battery including the same.
Resumen de: US2024421305A1
The invention relates to a carbon-containing anode material which is capable of the insertion and extraction of alkali metal ions. The invention further relates to a process for the preparation of a carbon-containing anode material which is capable of the insertion and extraction of alkali metal ions.
Resumen de: US2024421285A1
The present application provides a battery cell, a battery and an electrical apparatus, which belong to the technical field of batteries. The battery cell includes a case and at least three electrode assemblies; a cavity is defined in the case, the cavity includes a first region and a second region, the first region is closer to the case than the second region, a polarization parameter of a single electrode assembly located in the first region is PA, a polarization parameter of a single electrode assembly located in the second region is PB, and PA<PB.
Resumen de: US2024421427A1
Discussed is a separator for a lithium secondary battery and a lithium secondary battery including the same, more specifically, a separator for a lithium secondary battery including a porous substrate and a coating layer on at least one surface of the porous substrate, wherein the coating layer includes a defect-containing molybdenum disulfide. The separator for lithium secondary battery adsorbs lithium polysulfide through the coating layer comprising the defect-containing molybdenum disulfide and suppresses the growth of a lithium dendrite, thereby improving the capacity and lifetime characteristics of the lithium secondary battery.
Resumen de: US2024421437A1
The present invention provides an electrode assembly in which positive electrodes and negative electrodes are alternately stacked with separators interposed therebetween and which includes two or more types of separators having different temperatures at which adhesion is maximized, wherein the temperature at which the adhesion of the separators, positioned in the central portion of the electrode assembly, to the electrodes is maximized is lower than the temperature at which the adhesion of the separators, positioned in the other regions, to the electrodes is maximized, and also a secondary battery including the electrode assembly.
Resumen de: US2024421424A1
A battery exhaust vent includes an expanded metal filter which acts as a heat sink to cool an overheating battery. The exhaust vent acts as a particulate filter and flame arrestor which reduces flames and particulate slag projectiles from being expelled outside a battery housing. Directional Flow Expanded Metal (DFEM) and Variable Expanded Metal (VEM) are utilized for their directional fins and associated plethora of openings offset in overlapping layers to create a cyclone effect for gases or particles passing through the filter. The fins and holes are offset from layer to layer within a multi-layer filter construction and are designed to immediately change the direction of the flames and burning particles relative to the input flame flow direction. The vent may include an elastomeric umbrella valve which seals the vent from external airflow but allows quick venting for internal gas pressure during a runaway event or excessive heating.
Resumen de: US2024421423A1
A secondary battery includes: an electrode assembly; and a pouch-type casing in which the electrode assembly is disposed. The pouch-type casing includes upper and lower casings thermally bonded to each other, in which the pouch-type casing includes a sealing part formed along at least a part of an edge of the pouch-type casing. Electrode leads are connected to the electrode assembly and protrude from sides of the pouch-type casing. The sealing part may include a notch portion formed at an end of any one of the sides from which the electrode leads protrude, and the notch portion may have a curvature that is recessed toward the inside of the pouch-type casing.
Resumen de: US2024421419A1
Battery systems are provided that include polymer cells/pouch cells. The polymer cells/pouch cells are structured such that, in response to an increase in pressure within the polymer/pouch cell, e.g., a pressure increase beyond a threshold level, the polymer/pouch releases gasses in a directionally controlled manner so as to facilitate withdrawal of the gasses from the battery enclosure through a vent structure that is positioned for ease of communication with the released gasses. The battery enclosure is generally sealed, e.g., hermetically sealed, and the polymer cells/pouch cells may be spaced from each other, e.g., by a support structure that may include interleaved barrier structures.
Resumen de: US2024421315A1
Provided are a secondary battery mixture that has good properties in terms of strength and battery performance, a secondary battery mixture sheet containing the mixture, and a secondary battery using the secondary battery mixture sheet. The secondary battery mixture includes a fibrillatable resin and particles A having a particle size of 20 μm or more. The secondary battery mixture contains on average 80 or more of the particles A per 1 mm3 of the mixture.
Resumen de: US2024421312A1
The present disclosure can implement a high energy density electrode by quantifying and standardizing a degree of fiberization of powder for an electrode used in a dry electrode. The powder includes an active material; a solid electrolyte; a conductive material; and a fibrous binder.
Resumen de: US2024421295A1
A method for preparing molybdenum-based self-doped lithium-ion battery negative electrode material from molybdenum-containing waste catalyst includes: (1) calcinating and mechanically activating a waste hydrogenation catalyst containing molybdenum trioxide and aluminum oxide to obtain an oil-free and carbon-free micron-sized waste catalyst powder; (2) mixing the waste catalyst powder with sodium carbonate to obtain a mixture, and subjecting the mixture to thermal treatment to selectively convert molybdenum trioxide in the waste catalyst into sodium molybdate to obtain a clinker; (3) subjecting the clinker to leaching with water being used as a leaching agent, and collecting a leaching solution; and (4) mixing the leaching solution with a solution of a polyol containing a ferrous salt, subjecting the resulting mixture to a hydrothermal reaction, and collecting produced self-Al-doped ferrous molybdate to obtain the molybdenum-based self-doped lithium-ion battery negative electrode material.
Resumen de: US2024421298A1
A composite cathode active material, a cathode including the same, and an all-solid secondary battery are provided. The composite cathode active material includes a composite of M2S, an alkali metal salt, and a carbon-based material, wherein M is an alkali metal, the alkali metal is Li or Na, a size of an M2S crystallite obtained from an X-ray diffraction (XRD) spectrum of the composite is less than 9.9 nm, and the composite includes a solid solution of the M2S and the alkali metal salt.
Resumen de: US2024421293A1
A positive electrode active material includes a compound represented by formula 1: Li(1.333−0.667x−cz−ca)Mn(0.667−0.333x−0.5y)Ni(x−0.5y+cz)M(y+ca)O(2−b)Fb (1), wherein, 0
Resumen de: US2024421317A1
The present disclosure provides a secondary battery mixture that has good properties, a secondary battery mixture sheet containing the mixture, and a secondary battery using the secondary battery mixture sheet. The secondary battery mixture contains a solid-state electrolyte and/or electrode active material, and a binder, wherein the binder is a fibrillatable resin having a fibrous structure with a fibril diameter (median value) of 100 nm or less, and is contained in the secondary battery mixture in an amount of 0.3% by mass or more and 8% by mass or less.
Resumen de: US2024421418A1
The present invention relates to a secondary battery including an electrode assembly; a can that accommodates the electrode assembly; a cap assembly that includes a vent, a current interrupt device (CID) filter positioned under the vent, and a CID gasket positioned at one end of the current interrupt device filter to close an open upper portion of the can; and a gasket that is compressed while interposed between the cap assembly and the upper portion of the can to maintain insulation and sealing between the cap assembly and the can, wherein an outer surface and upper and lower surfaces of the vent of the cap assembly are in close contact with inner and upper surfaces of the gasket, respectively, and a radius of curvature of a portion where the outer surface and the upper surface of an edge portion of the vent meet is 0.3 mm or less.
Resumen de: US2024421412A1
A bracket is applicable to a battery module including multiple cells. The bracket includes a base and multiple positioning devices. The base is provided with multiple placement grooves spaced apart from each other and arranged in an array, and has multiple arrangement areas spaced apart from each other. Each of the placement grooves has an outer periphery surrounded by ones of the arrangement areas, and the cells are capable of being inserted respectively into the plurality of placement grooves. The positioning devices are arranged respectively in the arrangement areas. Each of the positioning devices includes one or more elastic structures, and each of the elastic structures is configured to abut against an outer periphery of one of the cells.
Resumen de: US2024421458A1
An electrolyte supply system for supplying an electrolyte to a use point, includes: a receiving storage tank configured to store the electrolyte that has been delivered; a supply storage tank to which the electrolyte is transferred from the receiving storage tank; a temperature control device configured to control temperatures of the electrolyte in the receiving storage tank and that in the supply storage tank; and a supply pipe that is laid from the supply storage tank to the use point. The electrolyte supply system is highly safe because the storage tanks are disposed in an outdoor location, and furthermore, performs a temperature control process for the receiving storage tank before the electrolyte is transferred to the supply storage tank. Thus, it can supply the electrolyte to the use point 24 hours a day even with little temperature control in the supply storage tank.
Resumen de: US2024421399A1
A battery pack of the present disclosure includes: a pack housing accommodating a battery module therein; a monitoring portion monitoring the battery module; and a connecting portion provided to transmit an electric signal between the monitoring portion and the battery module, wherein the monitoring portion includes: a circuit portion processing the electrical signal; and a flexible wire electrically connecting the connecting portion and the circuit portion.
Resumen de: US2024421624A1
A battery control monitoring system includes discharge circuitry, controller circuitry, and fixation monitoring circuitry. The discharge circuitry is configured to execute forced discharge of a rechargeable battery. The controller circuitry is electrically connected to the discharge circuitry and is configured to control the forced discharge executed by the discharge circuitry using a control signal. The fixation monitoring circuitry is electrically connected to the controller circuitry and is configured to monitor signal fixation.
Nº publicación: US2024421616A1 19/12/2024
Solicitante:
LG ENERGY SOLUTION LTD [KR]
LG ENERGY SOLUTION, LTD
Resumen de: US2024421616A1
Discussed is a protection apparatus that may identify an accumulated charging time period of a charging current applied at least one battery cell and determine whether to permanently block charging and discharging of the at least one battery cell by comparing an accumulated charging time period with a predetermined threshold time period, thereby preventing battery cell ignition due to lithium plating occurring in the battery cell caused from a charging current.
BOPI
Sede Electrónica
