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955
resultados
Última actualización
09/02/2026 [07:06:00]
Resultados 450 a 475 de 955
Resumen de: WO2026023390A1
Provided is a secondary battery that can be produced efficiently and in which a short circuit between a positive electrode side collector member and a negative electrode side collector member is unlikely to occur. A secondary battery 1 comprises: an electric power storage element 2 that has a positive electrode layer 6, a negative electrode layer 7, and a solid electrolyte layer 5; a positive-electrode-side current collector layer 3; and a negative-electrode-side current collector layer 4. In a plan view, outer peripheral edges 6a, 7a of the positive electrode layer 6 and the negative electrode layer 7 are arranged inwardly of outer peripheral edges 5a of the solid electrolyte layer 5. In a plan view, the positive-electrode-side current collector layer 3 includes a positive-electrode-side current collector body 8 that is disposed inwardly of the outer peripheral edges 5a of the solid electrolyte layer 5, and a positive-electrode-side current collector protrusion 9 that protrudes from an end surface 8b of the positive-electrode-side current collector body 8. The positive-electrode-side current collector protrusion 9 has a positive-electrode-side current collector protrusion end surface 9a that is provided so as to be aligned with an end surface 5b of the solid electrolyte layer 5. In a plan view, the negative-electrode-side current collector layer 4 includes: a negative-electrode-side current collector body 10 that is disposed inwardly of the outer peripheral edges 5a of the
Resumen de: WO2026023369A1
A battery buffer-material 30 is disposed between adjacent battery cells. The battery buffer-material 30 includes: an elastic member; and a heat-resistant bag 34 which envelops the elastic member and which is configured so that if the elastic member generates a gas which exceeds a prescribed concentration, the gas does not come into contact with a battery cell. The heat-resistant bag 34 is formed by bonding peripheral edges of a sheet to each other.
Resumen de: WO2026023074A1
Provided is a method for manufacturing an all-solid-state battery with which it is possible, for an all-solid-state battery that comprises a Li metal or a Li alloy in a negative electrode at the time of manufacturing, to easily detect the presence or absence of a short-circuit cell before connecting a plurality of battery cells in parallel. The method for manufacturing an all-solid-state battery comprises: a press step for pressing a stack, in which a negative electrode that contains a lithium metal or a lithium alloy, a solid electrolyte layer, and a positive electrode are repeatedly disposed, so as to form an all-solid-state battery stack in which a plurality of battery cells are stacked; a temperature measurement step for measuring or estimating the temperature of at least a part of the all-solid-state battery stack during or after the press step; and a detection step for detecting the presence or absence of a short circuit in a battery cell on the basis of the temperature measured or estimated in the temperature measurement step. During the period from the start of the press step to the end of the detection step, a state in which the current collectors of electrodes having the same polarity are not electrically connected to each other is maintained for at least one of the negative electrode and the positive electrode.
Resumen de: WO2026023118A1
This lithium sulfide is characterized by having a carbon content of 2.0 mass% or less and an oxygen content of 5.0 mass% or less. Impurities contained in the lithium sulfide are preferably one or more impurities selected from among carbon, lithium sulfate, lithium carbonate, and lithium oxide. This method for producing a sulfide-based solid electrolyte is characterized by using said lithium sulfide as a raw material.
Resumen de: WO2026020659A1
The present invention relates to the field of lithium-ion batteries. Disclosed are a high-energy-density long-cycle-life lithium-ion battery and a preparation method therefor. The specific implementation solution involves: the high-energy-density long-cycle-life lithium-ion battery comprises a positive electrode sheet, a negative electrode sheet, a separator, an electrolyte and an aluminum laminate film casing, wherein the positive electrode sheet consists of a positive-electrode current collector and a positive-electrode slurry applied to a surface of the positive-electrode current collector, and the positive-electrode slurry consists of a positive-electrode active substance, a positive-electrode conductive agent and a positive-electrode binder; the negative electrode sheet consists of a negative-electrode current collector and a negative-electrode slurry applied to a surface of the negative-electrode current collector, and the negative-electrode slurry consists of a negative-electrode active substance, a negative-electrode conductive agent and a negative-electrode binder; the separator is an adhesive ceramic-coated separator; and the electrolyte consists of a solute and a solvent. The present invention comprehensively improves the energy density and cycle performance of a battery cell, the energy density can reach 360 Wh/kg or above, and the electrical performance is good.
Resumen de: WO2026020816A1
Provided in the present application are a liquid cooling system and a battery pack. The liquid cooling system is used in the battery pack, and the battery pack comprises at least one battery cell group. The liquid cooling system comprises at least one supporting liquid cooling plate and a top liquid cooling plate. Each supporting liquid cooling plate is used for supporting the bottom of a corresponding battery cell group and cooling said battery cell group. The top liquid cooling plate is located above the at least one supporting liquid cooling plate, and is arranged on the top of a corresponding battery cell group and used for cooling said battery cell group. The thickness of the supporting liquid cooling plate is greater than that of the top liquid cooling plate.
Resumen de: WO2026020712A1
Provided in the present application are a sodium-ion battery positive electrode precursor having a core-shell structure, a manufacturing method therefor, and the use thereof. Said precursor comprises a core and a shell on the surface of the core, the core comprising NiaFebMn1-a-b-cMc(OH)2, wherein 0.3≤a≤0.5, 0.2≤b≤0.4 and 0≤c≤0.01, and the shell comprising NixCuyFezMn1-x-y-z-vNv(OH)2, wherein 0.1≤x<0.3, 0.02≤y≤0.2, 0.2≤z≤0.4 and 0≤v≤0.01, and the shell containing pores. In said precursor of the present application, primary particles of the core are of a dense packing while primary particles of the shell are of a loose packing, so that compaction density, energy density, porosity and specific surface area of the material are improved, thus improving properties of the material.
Resumen de: US20260031353A1
A hard carbon material contains micropores and ultramicropores, a pore diameter of the micropores is less than 2 nm, a pore diameter of the ultramicropores is less than 0.7 nm, a pore volume of the micropores accounts for 95% to 100% of a total pore volume, a pore volume of the ultramicropores ranges from 0.01 cm3/g to 0.2 cm3/g, and the pore volume of the ultramicropores accounts for 80% to 99% of the total pore volume. The negative electrode active material provided in this application exhibits a stable low-potential plateau, high specific capacity, and high reversible capacity, and applying the negative electrode active material of this application to secondary batteries enhances the energy density of secondary batteries while improving their cycle performance.
Resumen de: US20260031349A1
The present disclosure provides a positive electrode active material, a sodium-ion battery and a preparation method therefor and an electrical device, relating to the technical field of secondary batteries. The positive electrode active material includes a polyanionic material and Na4Fe3(PO4)2P2O7, a mass of the Na4Fe3(PO4)2P2O7 being 40% to 60% of a mass of the positive electrode active material. In the present disclosure, the polyanionic material and Na4Fe3(PO4)2P2O7 are compounded as the positive electrode active material. The two materials cooperate with each other, so that the positive electrode active material has a high diffusion coefficient of Na+, a high energy density and excellent cycle stability at a low temperature, which is beneficial to improving the low-temperature service performance of the sodium-ion battery.
Resumen de: US20260031359A1
A method for producing binder-coated active battery material agglomerations includes agitating a volume of a binder-solvent solution across two or more steps with a particulate mixture including active battery material particles. The binder-solvent solution has a solubility limit for a mixture of binder material particles within a first solvent solution at a first set of environmental parameters. The particulate mixture is subjected to a second set of environmental parameters across two or more steps which reduces the solubility limit to generate a powder mixture of binder-coated active battery material agglomerations.
Resumen de: US20260031351A1
The present disclosure provides a dispersible graphene platelet and a method of making same. The structure of the graphene platelet 10 comprises a base layer 1 of graphene on which at least one discontinuous layer 2, 3, 4 of graphene is stacked, with each layer of graphene above the base layer having a smaller surface area than the layer it is stacked upon. The edges of the base layer and the discontinuous layers stacked upon it are all at least partially functionalised 5, providing a structure with graphene-like properties owing to the base layer and relatively high dispersibility owing to the increased amount of functionalised groups on each platelet. The platelets may be used for a number of applications, for example in the production of electrodes or composite materials.
Resumen de: US20260031348A1
A positive electrode material includes a lithium cobalt oxide with a P63mc crystal structure. In a Raman spectrum of the positive electrode material, a peak height of a characteristic peak within a range of 490 cm−1±5 cm−1 is I1, and a peak height of a characteristic peak within a range of 592 cm−1±5 cm−1 is I2, satisfying 1
Resumen de: US20260031352A1
A secondary battery, a preparation method therefor, and an electrical device. The secondary battery includes a negative electrode. A current collector includes a first region and a second region. The second region is close to a tab. A first active material layer is located in the first region. A second active material layer is located in the second region. The percentage by weight of the silicon-based material in the second active material layer is greater than the percentage by weight of the silicon-based material in the first active material layer. The percentage by weight of the first carbon material in the second active material layer is greater than the percentage by weight of the first carbon material in the first active material layer.
Resumen de: US20260031403A1
Disclosed is a rechargeable lithium battery including a positive electrode including a positive active material; a negative electrode including a negative active material; an electrolyte solution including a lithium salt and a non-aqueous organic solvent; and a separator between the positive and the negative electrodes, the separator including a porous substrate and a coating layer positioned on at least one side of the porous substrate. The negative active material includes a Si-based material; the non-aqueous organic solvent includes cyclic carbonate including ethylene carbonate, propylene carbonate, or combinations thereof, the cyclic carbonate being included in an amount of about 20 volume % to about 60 volume % based on the total amount of the non-aqueous organic solvent; and the coating layer includes a fluorine-based polymer, an inorganic compound, or combinations thereof. The rechargeable lithium battery has improved cycle-life and high temperature storage characteristics.
Resumen de: US20260031388A1
The present disclosure relates to the technical field of battery materials, and provides a fluorine-containing solid-state electrolyte. The fluorine-containing solid-state electrolyte has a general structural formula (AX)aMBy, where A denotes at least one of Li, Na, K, Ag, and Cu, M denotes at least one of Ti, Sn, Ta, Nb, Zr, Hf, Ga, Al, and Fe, and 0.5<a<4; B denotes F, X denotes at least one of an oxygen-containing anion and a fluorine-containing anion, and y equals 4 or 5; or B denotes at least one of F, Cl, Br, and I, X denotes BF4, and y equals 3, 4, or 5. The solid-state electrolytes according to examples of the present disclosure have the high ionic conductivities.
Resumen de: US20260031390A1
A cell assembly has a plurality of first electrodes, a plurality of second electrodes and a plurality of solid electrolyte layers. The solid electrolyte layers have a protrusion in at least one of the solid electrolyte layers. The protrusion is aligned with a first electrode tab of one of the first electrodes. The folding of the first electrode tabs causes the protrusions to be positioned to separate the first electrode tabs from the second electrodes, thus preventing short circuit between the first electrode tabs and second electrodes. In one aspect, the disclosure provides an all solid-state battery comprising one or more anodes, one or more cathodes and one or more solid electrolyte layers with a protrusion. Also disclosed is a method for preparing same.
Resumen de: US20260031343A1
A positive electrode active substance having a layered rock-salt structure and having an initial charge capacity larger than that of a conventional technology is provided. The positive electrode active substance is obtained by adding an additive containing boron element to a lithium composite oxide having a layered rock-salt structure represented by Li2Mn1-xNixO3 (0≤x<1) or a precursor of the lithium composite oxide, and performing heating and sintering. The amount of boron is more than 0.00075 equivalents and 0.2 equivalents or less with respect to 1 equivalent of a total of Mn and Ni of the lithium composite oxide.
Resumen de: WO2026023563A1
The present invention addresses the problem of providing a burn-spread prevention material having excellent burn-spread prevention property and high flexibility, a battery pack using the burn-spread prevention material, and an automobile equipped with the battery pack. According to one embodiment of the present invention, there is provided a burn-spread prevention material comprising: an inorganic fiber base material containing inorganic fibers; and sodium silicate supported on the inorganic fiber base material. The sodium silicate has a water content of 30 mass% or more at 30°C.
Resumen de: WO2026023617A1
The present invention provides: an all-solid-state secondary battery which has excellent charge and discharge cycle characteristics under high temperature conditions; and a positive electrode and a power generation element for constituting the all-solid-state secondary battery. A positive electrode for an all-solid-state secondary battery according to the present invention has an overall void fraction of a molded body of a positive electrode mixture and a sheet-like porous metal base material of 14-21%. A power generation element according to the present invention is used for an all-solid-state secondary battery, and is provided with: a positive electrode that has a sheet-like porous metal base material and a molded body of a positive electrode mixture that contains a positive electrode active material and a solid electrolyte; a negative electrode that has a sheet-like porous metal base material and a molded body of a negative electrode mixture that contains a negative electrode active material; and a solid electrolyte layer. The overall void fraction of the molded body of the positive electrode mixture, the sheet-like porous metal base material of the positive electrode, the solid electrolyte layer, the molded body of the negative electrode mixture, and the sheet-like porous metal base material of the negative electrode is 14-22%. An all-solid-state secondary battery according to the present invention comprises a positive electrode according to the present invention or a p
Resumen de: WO2026022975A1
This all-solid-state battery comprises: a container; an electrode laminate that is housed in the container; and a tracer substance-containing member that is housed in the container and contains a tracer substance.
Resumen de: WO2026023342A1
This method for manufacturing a solid electrolyte-containing sheet comprises: a precursor preparation step for preparing a precursor 1, wherein the precursor is a composite material including a solid electrolyte, a curable organic material cured by a crosslinking reaction, and a porous sheet; a pressurization step for pressurizing the precursor 1 so that the porous sheet is elastically deformed; and a crosslinking step for performing a crosslinking reaction of the curable organic material in a state in which the porous sheet is elastically deformed.
Resumen de: WO2026020461A1
The present application discloses a secondary battery and an electronic device. The secondary battery comprises a housing, an electrode assembly, and a first bonding member. The electrode assembly comprises a first electrode plate, a second electrode plate, and a separator disposed between the first electrode plate and the second electrode plate. The first electrode plate, the second electrode plate, and the separator are wound to form a wound structure. The outermost electrode plate of the electrode assembly is the first electrode plate. The outermost ring of the first electrode plate is sequentially provided with a first coating area and a first empty foil area. A part of the first electrode plate is recessed to form a first recess. The first bonding member is bonded to the outermost ring of the first electrode plate. The first bonding member bonds a part of a first active material layer in the first coating area and a part of a first current collector in the first empty foil area. The first bonding member covers the first recess along a thickness direction of the first electrode plate. In the secondary battery, the provision of the first recess facilitates the release of stress generated at least in part by the expansion of the first electrode plate or the second electrode plate. The first bonding member can maintain the structure of the first recess during winding.
Resumen de: WO2026020451A1
A battery (2) and an electric apparatus. The battery (2) comprises a battery cell (7) and a metal component (6). The battery cell (7) comprises a first outer wall face (701), and the first outer wall face (701) is provided with a weak portion (702). The metal component (6) is arranged opposite the first outer wall face (701), wherein the first outer wall face (701) is provided with a first insulating protective layer (703), and the first insulating protective layer (703) is connected to the first outer wall face (701); and the first insulating protective layer (703) covers at least part of the weak portion (702). A weak portion (702) is provided, such that a battery cell (7) can tear at the weak portion (702), so as to discharge substances from the battery cell (7), thereby reducing the temperature and air pressure inside the battery cell (7), and thus improving the reliability of the battery cell (7) during operation. Moreover, providing a first insulating protective layer (703) on at least part of the surface of the weak portion (702) to form insulating protection reduces the risk of short circuits caused by lap contact between the torn weak portion (702) and the metal component (6), thereby improving the operation stability of batteries (2).
Resumen de: WO2026020713A1
Provided in the present application are a cobalt-free nickel-manganese binary precursor material, and a preparation method therefor and the use thereof. The preparation method comprises the following steps: mixing a nickel-manganese metal source solution, a precipitant solution and a first complexing agent solution, and carrying out a nucleation stage of a coprecipitation reaction; after the nucleation stage is finished, adjusting the pH value of the coprecipitation reaction, replacing the first complexing agent solution with a second complexing agent solution containing an additive, and carrying out a growth stage of the coprecipitation reaction, so as to obtain a precursor slurry; and washing and drying the precursor slurry, so as to obtain the cobalt-free nickel manganese binary precursor material, wherein a washing solution used in washing comprises a reducing agent. In the preparation method of the present application, the additive is added in the growth stage of the coprecipitation reaction to control the growth of crystals, and the reducing agent is added in the washing stage of the post-treatment to inhibit the precipitation of a manganese oxide, thereby enabling the obtained precursor to have a better crystallinity and a lower precipitation amount of the manganese oxide.
Nº publicación: US20260031340A1 29/01/2026
Solicitante:
CONTEMPORARY AMPEREX TECH CO LIMITED [CN]
CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Resumen de: US20260031340A1
The present application provides a sodium-ion battery, a battery, and an electric apparatus. The sodium-ion battery includes a negative electrode plate and a positive electrode plate containing a positive electrode active material. The negative electrode plate includes a negative electrode current collector and a sodium metal layer disposed on at least one surface of the negative electrode current collector. A slope of a state of charge SOC-open circuit voltage OCV curve of the sodium-ion battery is denoted as k, and the state of charge SOC-open circuit voltage OCV curve of the sodium-ion battery satisfies: accumulated SOC≥20%, and k≥5 mV/1% SOC.
BOPI
Sede Electrónica
