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1659
resultados
Última actualización
18/12/2025 [07:24:00]
Resultados 1025 a 1050 de 1659
Resumen de: US2025372839A1
Conventional art has a problem in that production efficiency of rechargeable batteries is low. A method of manufacturing a rechargeable battery according to the present disclosure includes: resin-molding a lower case including a storage unit for storing an electrode body and an electrode terminal to be connected to an electrode tab of the electrode body; welding the electrode tab to the electrode terminal from a side of the storage unit of the lower case in a state where the electrode body is taken out of the storage unit; storing the electrode body in the storage unit by bending the electrode tab after the welding of the electrode tab; and gluing a lid to an opening of the lower case in a state where the electrode body is stored in the storage unit.
Resumen de: US2025372654A1
Provided is a technology that can suppress the capacity decrease after charge-discharge cycles in an electricity storage device containing silicon-containing graphite particles as a negative electrode active material. A negative electrode disclosed herein includes a negative electrode active material composed of silicon-containing graphite particles, a first binder, and a second binder. The silicon-containing graphite particles include graphite particles with voids and silicon-containing particles disposed in the voids. The first binder is styrene butadiene rubber with a glass-transition temperature of 1° C. or higher. The second binder is styrene butadiene rubber with a glass-transition temperature of lower than 1° C.
Resumen de: US2025372803A1
A power storage device includes a plurality of power storage cells, a bottom wall, a panel member that cooperates with the bottom wall to define an emission path, and a protective member. Each power storage cell has a lower surface provided with a safety valve. The bottom wall has a plurality of through holes. The protective member includes a plurality of cylindrical portions projecting through the through holes, respectively, toward the panel member.
Resumen de: US2025372705A1
In a secondary battery including an electrolyte layer containing a sulfide solid electrolyte, the electrolyte layer has both high voltage resistance and high ionic conductivity. The secondary battery of the present disclosure includes a positive electrode, an electrolyte layer, and a negative electrode, wherein the electrolyte layer contains a sulfide solid electrolyte and a perfluoropolyether represented by formula (1) below:where Rf1 and Rf2 are each independently a C1-16 divalent alkylene group which may be substituted with one or more fluorine atoms, E1 and E2 are each independently a monovalent group selected from the group consisting of a fluorine group, a hydrogen group, a hydroxyl group, an aldehyde group, a carboxylic acid group, a C1-10 alkyl ester group, an amide group which may have one or more substituents, and an amino group which may have one or more substituents, and RF is a divalent fluoropolyether group.
Resumen de: US2025372772A1
The disclosure provides a packaging material for a power storage device including at least a substrate layer, a barrier layer, an adhesive layer, and a sealant layer in this order, wherein the hydrogen sulfide gas permeability at 100° C. in the thickness direction of the sealant layer and the adhesive layer is 3.7×10−15 to 1.8×10−12 (mol·m)/(m2·s·Pa).
Resumen de: US2025372811A1
A power storage device includes a plurality of power storage cells, a housing, a smoke exhaust sensor, and a detection space formation member that forms a detection space in which gas is detected by the smoke exhaust sensor. The housing includes a lower case, and a share panel that forms a smoke exhaust space between a bottom plate of the lower case and the share panel. The detection space formation member is provided to form a detection space between the bottom plate and the plurality of power storage cells and to cause the detection space to be separated from the smoke exhaust space.
Resumen de: US2025372693A1
A negative electrode active material layer of a herein disclosed negative electrode contains a chemical compound represented General formula (1) described below. Incidentally, each of R1 to R5 in the formula is independently selected from a group consisting of a hydrogen, an alkyl group, a hydroxy group, a cyano group, an aldehyde group, an ether group, an ester group, an amino group, and a phenyl group, R6 is the alkyl group, and at least 1 of the R1 to the R5 is the hydroxy group. According to the negative electrode containing the chemical compound having the above described configuration, it is possible to suitably inhibit an occurrence of an inside short circuit and a reduction of a battery capacity which are caused by a precipitation of a metal Li.
Resumen de: US2025372662A1
In the current collector for a bipolar battery of the present disclosure, the first current collector and the second current collector are bonded to each other via a conductive adhesive layer, the first current collector is provided with a first through hole, the conductive adhesive layer is inserted into the first through hole, and/or the second current collector is provided with a second through hole, and the conductive adhesive layer is inserted into the second through hole. In the bipolar battery of the present disclosure, the first electrode active material layer is bonded to the current collector for the bipolar battery by the conductive adhesive layer that has entered the first through hole, and/or the second electrode active material layer is bonded to the current collector for the bipolar battery by the conductive adhesive layer that has entered the second through hole.
Resumen de: US2025372641A1
A positive electrode active material comprises a lithium-metal composite oxide. The lithium-metal composite oxide is in a form of a plate-like particle. The plate-like particle satisfies relationships of “3≤dx/dz” and “2≤dy/dz”. “dx” represents a major-axis diameter of the plate-like particle. “dy” represents a minor-axis diameter of the plate-like particle. “dz” represents a thickness of the plate-like particle.
Resumen de: US2025372639A1
The cathode active material includes secondary particles. The secondary particle includes a plurality of crystallites. Each of the plurality of crystallites includes a lithium metal composite oxide. A structure of the lithium metal composite oxide is a layered-rocksalt structure. In the cross section of the secondary particle, “2.5≤dL/dS≤28.2”, “0.125≤dL/D”, and “θ≤450” are satisfied. “dL” indicates the major axis diameter of the crystallite. “dS” indicates the minor axis diameter of the crystallite. “D” indicates the maximum Feret diameter of the secondary particles. “θ” represents an angle formed between the first straight line and the second straight line. The first straight line is an extension of the major axis diameter of the crystallite. The second straight line passes through the intersection of the circumscribed circle of the secondary particle and the extension line and the center of the circumscribed circle.
Resumen de: US2025372638A1
An electrode active material in the present disclosure has at least one O2-like structure selected from among an O2-type structure, a T#2-type structure, and an O6-type structure, and has a chemical composition shown as LiaNabNix-pCOy-qMnz-rMp+q+rO2(0
Resumen de: US2025372637A1
A positive electrode active material with both high capacity and safety is provided. The secondary battery includes a positive electrode. The positive electrode includes a positive electrode active material. The positive electrode active material includes lithium cobalt oxide containing magnesium, nickel, and aluminum. When the positive electrode is analyzed by powder X-ray diffraction using CuKα1 as a radiation source at a charge depth greater than or equal to 0.8, the positive electrode active material has diffraction peaks at 2θ of 19.30±0.20° and 2θ of 45.55±0.10°. The positive electrode active material includes a first region having a surface parallel to a (001) plane and a second region having a surface parallel to a plane intersecting with the (001). A nickel concentration in the first region is higher than a nickel concentration in the second region.
Resumen de: US2025372640A1
A method of producing a positive electrode active material includes calcinating a mixture of a nickel-containing compound and a lithium compound introduced into a furnace of a rotary kiln at 750 to 1000° C. under an oxygen atmosphere. The nickel-containing compound is at least one of a nickel-containing hydroxide and a nickel-containing oxide. A layer of yttrium-chromium composite oxide is formed on an outermost surface of an inner wall of the furnace.
Resumen de: US2025372627A1
The cathode active material includes first particles and second particles. The first particle has a maximum Feret diameter of 1 μm or greater. The second particle has a maximum Feret diameter less than or equal to 50 nm. The second particle is attached to the surface of the first particle. The second particles are deposited in an amount of 0.24 or more per 1 μm2.
Resumen de: US2025372620A1
This non-aqueous electrolyte secondary battery comprises a negative electrode. The negative electrode has a negative electrode mixture layer formed on the surface of a negative electrode current collector. The negative electrode mixture layer has a first negative electrode mixture layer and a second negative electrode mixture layer. The first negative electrode mixture layer and the second negative electrode mixture layer include a negative electrode active material. The negative electrode active material in the first negative electrode mixture layer has two negative electrode active materials M1 and M2 of different volume-average particle size. The ratio (A2/A1) of the volume-average particle size (A2) of the negative electrode active material M2 to the volume-average particle size (A1) of the negative electrode active material M1 is in the range of 0.16-0.5.
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: 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.
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.
Nº publicación: US2025372725A1 04/12/2025
Solicitante:
NGK INSULATORS LTD [JP]
NGK INSULATORS, LTD
Resumen de: US2025372725A1
There is provided a zinc secondary battery including a positive electrode plate including a positive electrode active material layer and a positive electrode current collector; a negative electrode plate including a negative electrode active material layer containing at least one selected from the group consisting of zinc, zinc oxide, a zinc alloy, and a zinc compound, and a negative electrode current collector; a hydroxide ion conductive separator that separates the positive electrode plate and the negative electrode plate so as to make hydroxide ions conductable; and an electrolytic solution. The electrolytic solution is an aqueous solution containing an alkali metal hydroxide including at least sodium hydroxide, and a total concentration of the alkali metal hydroxide in the electrolytic solution is from 5.0 to 6.0 mol/L, and a concentration of the sodium hydroxide in the electrolytic solution is from 0.5 to 6.0 mol/L.
BOPI
Sede Electrónica
