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CATHODE ACTIVE MATERIAL FOR LITHIUM-ION BATTERY AND PRODUCING METHOD THEREOF

Resumen de: US20260018604A1

Provided is a cathode active material for a lithium-ion battery that can reduce gas generation in the cathode and exhibits an excellent filling property. Also provided is a method of producing a cathode active material for a lithium-ion battery, the method including preparing a mixture comprising a lithium transition metal composite oxide having a layered structure, containing lithium and nickel in a composition, and containing secondary particles formed by aggregation of a plurality of primary particles, the secondary particles having a volume-average particle diameter greater than 3 μm and less than 5 μm, and a treatment solution containing a sulfate ion and a liquid medium, a concentration of the sulfate ion being in a range of 1 mass % to 9 mass %; and removing the treatment solution from the mixture.

POSITIVE ELECTRODE SHEET, BATTERY CELL, BATTERY, AND ELECTRIC DEVICE

Resumen de: US20260018600A1

A positive electrode sheet, a battery cell, a battery, and an electric device. The positive electrode sheet includes a positive electrode current collector, and a first positive electrode active material layer and a second positive electrode active material layer which are sequentially arranged on the surface of the current collector. The lattice volume shrinkage of a first positive electrode active material is greater than that of a second positive electrode active material, and the mass percentage of a binder in the first positive electrode active material layer is 0.8 wt % to 1.5 wt %.

SOLID ELECTROLYTE, MANUFACTURING METHOD OF THE SAME, AND NON-PRESSURIZED SECONDARY BATTERY INCLUDING THE SAME

Resumen de: US20260018663A1

A solid electrolyte includes an organic polymer represented by Chemical Formula 1. The polymer comprises a repeating unit having at least one of ester, thioester, or dithioester linkages, and may include alkyl, aryl, or heteroaryl substituents. The solid electrolyte exhibits enhanced ionic conductivity and thermal stability, making it suitable for application in a non-pressurized secondary battery. A method for preparing the solid electrolyte involves polymerizing a monomer containing functional groups defined in Chemical Formula 1 under controlled conditions. The secondary battery includes the solid electrolyte and demonstrates improved cycle characteristics and safety. The invention provides a solid electrolyte solution that enables safer battery designs for non-pressurized secondary batteries without compromising performance.

METAL-SUBSTITUTED LITHIUM-DEFICIENT SOLID ELECTROLYTES

Resumen de: US20260018662A1

This invention relates to a lithium-deficient solid electrolyte substituted with zinc. The present inventors have surprisingly found that these zinc-substituted lithium-deficient solid electrolyte display an increased ionic conductivity. Moreover, these solid electrolyte compositions according to the invention display a reduced H2S gas evolution upon contact with moisture.

SOLID ELECTROLYTE MEMBRANE AND ALL-SOLID-STATE BATTERY COMPRISING SAME

Resumen de: US20260018660A1

A solid electrolyte membrane for an all-solid-state battery, includes a first solid electrolyte particle and a second solid electrolyte particle, wherein the Young's modulus of the first solid electrolyte particle is higher than the Young's modulus of the second solid electrolyte particle, wherein the first solid electrolyte particle and the second solid electrolyte particle have an average particle size (D50) of 1 μm to 5 μm, wherein the first solid electrolyte particles and the second solid electrolyte particles are mixed in a weight ratio of less than 7:3 to 2:8, and an all-solid-state battery comprising the same.

ELECTROLYTE COMPOSITIONS FOR BATTERIES

Resumen de: US20260018673A1

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.

SECONDARY BATTERY, BATTERY ASSEMBLY AND ELECTRONIC DEVICE

Resumen de: US20260018675A1

A secondary battery, a battery assembly, and an electronic device are provided. The secondary battery includes a negative electrode sheet, a positive electrode sheet, and a separator located between the positive electrode sheet and the negative electrode sheet. The negative electrode sheet includes the negative active material layer includes a negative straight region and a negative thinned region located at one end of the negative straight region in a first direction. The positive electrode sheet includes the positive active material layer includes a positive straight region and a positive thinned region located at one end of the positive straight region away from the first direction. In the first direction, the positive active material layer includes a protruding portion that extends beyond the negative straight region. The protruding portion overlaps with an orthogonal projection of the negative thinned region in a second direction perpendicular to the first direction.

SOLID ELECTROLYTE COMPOSITION, SOLID ELECTROLYTE LAYER OR ELECTRODE MIXTURE, AND LITHIUM ION BATTERY

Resumen de: US20260018661A1

A solid electrolyte composition including (A) a sulfide solid electrolyte including lithium, phosphorus and sulfur, and (B) one or more compounds selected from the compounds represented by the following formulas (1) to (3).

SOLID ELECTROLYTE COMPRISING HALIDE, PREPARATION METHOD THEREOF AND SECONDARY BATTERY COMPRISING THE SAME

Resumen de: US20260018659A1

Disclosed is a novel halide-based solid electrolyte composition exhibiting enhanced ionic conductivity, wherein the solid electrolyte composition comprises a lithium yttrium halide with a hexagonal close-packed structure, and when the occupancy of metal ions is defined as the number of metal ions relative to the number of metal ion sites within two consecutive layers constituting a unit cell with a hexagonal close-packed structure in the halide, the sum of the occupancies of metal ions within the two layers is 0.888 or less.

SECONDARY BATTERY AND ELECTRONIC DEVICE

Resumen de: US20260018670A1

An electrode assembly includes a positive electrode, a negative electrode, and a separator, and the separator is disposed between the positive electrode and the negative electrode; the electrode assembly satisfies 20≤n*x/y≤2000, where n represents a quantity of layers of the positive electrode along a thickness direction of the electrode assembly, x represents a dimension of the longest edge of a projection of the electrode assembly along the thickness direction, and y represents a maximum dimension of the electrode assembly along the thickness direction; the electrolyte includes a first additive with a reduction potential of 0.8 V to 1.8 V; and a mass percentage of the first additive in the electrolyte is denoted as a, where a is 0.1% to 15%.

NEGATIVE ELECTRODE FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY INCLUDING SAME

Resumen de: US20260018657A1

A negative electrode for a rechargeable lithium battery and a rechargeable lithium battery including the same are provided. The negative electrode includes: a current collector; a first negative active material layer on the current collector and including a first negative active material; and a second negative active material layer on the first negative active material layer and including a second negative active material, wherein the first negative active material layer and the second negative active material layer have a peak intensity ratio (I(002)/I(110)) of a peak intensity at a (002) plane relative to a peak intensity at a (110) plane of 150 or less when measured by X-ray powder diffraction (XRD) using a CuKα ray.

ELECTROLYTE, SECONDARY BATTERY, AND ELECTRIC DEVICE

Resumen de: US20260018672A1

An electrolyte, a secondary battery, and an electric device. The electrolyte comprises a component, a nitrile solvent. The nitrile solvent comprises a compound represented by formula (1): wherein: L is selected from any one of C(R1R2), O, Si(R3R4), B(R5), P(R6R7R8), and N(R9); R1-R9 are each independently selected from at least one of H, halogen, substituted or unsubstituted alkyl having 1-3 carbon atoms, alkoxy having 1-3 carbon atoms, amino, and cyano, and R1 and R2 are not cyanos and H; R11 is an alkane chain containing 1-4 carbon atoms; R12-R14 are each independently selected from at least one of H, halogen, substituted or unsubstituted alkyl having 1-3 carbon atoms, alkoxy having 1-3 carbon atoms, amino, and cyano; and when L is C(R1R2), R12-R14 are not cyanos.

LAMINATED BATTERY CELL, SECONDARY BATTERY, AND ELECTRIC DEVICE

Resumen de: US20260018653A1

The present application belongs to the technical field of batteries, and in particular, relates to a laminated battery cell, a secondary battery, and an electric device. The laminated battery cell provided by the present application includes a positive electrode sheet, a negative electrode sheet, and a separator. The separator includes a separator body. The separator body includes a side surface facing the negative electrode sheet. The side surface has a side edge, and an adhesive film layer is disposed on at least part of the side edge. The adhesive film layer is disposed along a first direction and/or a second direction of a plane where the separator body is located to form an accommodating region. The negative electrode sheet is located in the accommodating region.

LITHIUM SECONDARY BATTERY COMPRISING ELECTROLYTE

Resumen de: US20260018655A1

The present application relates to a lithium secondary battery including a positive electrode, a silicon-based negative electrode, a separator provided between the positive electrode and the negative electrode, and an electrolyte. The lithium secondary battery according to the present application includes a specific additive in the electrolyte which may serve to capture a Lewis acid produced by a solvent included in the electrolyte and to form a negative electrode film when the lithium secondary battery is driven.

RIBBON PRESSING DEVICE

Resumen de: US20260018654A1

A ribbon pressing device includes a jig body, multiple first pressing pin groups, and multiple second pressing pin groups, where the multiple first pressing pin groups are arranged at intervals on the jig body along a first direction, each of the multiple first pressing pin groups includes multiple first pressing pin units arranged at intervals along a second direction, and each of the multiple first pressing pin units is movable relative to the jig body; and the multiple second pressing pin groups are arranged at intervals on the jig body along the first direction, each of the multiple second pressing pin groups includes multiple second pressing pin units arranged at intervals along the second direction, and each of the multiple second pressing pin units is movable relative to the jig body.

INORGANIC COMPOUNDS HAVING AN ARGYRODITE-TYPE STRUCTURE, THEIR PREPARATION PROCESSES AND THEIR USES IN ELECTROCHEMICAL APPLICATIONS

Resumen de: US20260018666A1

The present technology relates to inorganic compounds having an argyrodite-type structure based on an alkali metal obtained by a preparation process comprising a step of grinding the sulfide of the alkali metal, the sulfate of the alkali metal, phosphorus pentasulfide and a halide of the alkali metal. Also described are electrode materials, electrodes, electrolytes comprising said inorganic compound having an argyrodite-type structure and their uses in electrochemical cells, for example, in electrochemical accumulators, particularly in all-solid-state batteries.

Production Method For Anode-Supported Cell

Resumen de: US20260018664A1

A production method includes: heating a first stacked body at 1000° C. or more, the first stacked body having: a layer containing an oxide represented by the composition formula: La2Si2O7; a first layer provided on one side of the oxide-containing layer and containing cerium oxide doped with a lanthanum element; and a layer provided on the first layer opposite to the oxide-containing layer and containing nickel oxide, and thereby generating, from the oxide represented by the composition formula, a solid electrolyte that has an apatite structure and is c-axis oriented; placing a second layer containing cerium oxide doped or not doped with an Ln element (a rare earth element other than cerium), on the solid electrolyte-containing layer opposite to the cerium oxide-containing layer, and thereby obtaining a second stacked body; and heating the second stacked body at 1000° C. or more.

LITHIUM SECONDARY BATTERY

Resumen de: US20260018656A1

A lithium secondary battery according to the embodiments of the present disclosure includes a cathode which includes lithium-metal oxide particles having a compressive fracture strength of 1,500 MPa or more and having a single particle form; an anode disposed opposite to the cathode and including a lithium metal layer, and a solid electrolyte layer interposed between the cathode and the anode and including a sulfide-based solid electrolyte.

ANODE MATERIAL AND BATTERY

Resumen de: US20260018614A1

Anode material, and battery. Anode material includes graphite and carbon layer located on at least part of surface of graphite. Particle surface and particle section of anode material are respectively tested by Raman spectroscopy, peak area ratio of D characteristic peak within range of 1300 cm−1 to 1350 cm−1 to G characteristic peak within range of 1500 cm−1 to 1580 cm−1 is ID/IG, ratio of ID/IG measured on the particle surface is A, and ratio of ID/IG measured on particle section is B, and 1.22

ELECTROLYTE, SODIUM SECONDARY BATTERY AND ELECTRIC DEVICE

Resumen de: US20260018658A1

An electrolyte, a sodium secondary battery and an electric device. The electrolyte comprises a first sodium salt and a first solvent, wherein the first sodium salt comprises sodium trifluoromethanesulfonate, and the first solvent has a structure as shown in formula I, with the mass ratio of the first sodium salt to the first solvent being 0.01-0.4. The electrolyte has a good low-temperature ionic conductivity, which is beneficial for improving the low-temperature cycling performance and low-temperature coulombic efficiency of the battery.

ELECTRODE ASSEMBLY AND SECONDARY BATTERY INCLUDING THE SAME

Resumen de: US20260018651A1

A secondary battery includes: an electrode assembly including a through-hole in a thickness direction thereof, a case having an opening and accommodating the electrode assembly, a cap plate coupled to an end of the case having the opening of the case, and an electrode terminal electrically connected to an electrode tab of the electrode assembly and penetrating through the cap plate. The secondary battery further includes a fixing member in the through-hole to secure the electrode assembly in the thickness direction.

ELECTROCHEMICAL DEVICE AND ELECTRONIC DEVICE

Resumen de: US20260018611A1

An electrochemical device includes a negative electrode plate. The negative electrode plate includes a negative current collector, a first layer, and a second layer. The first layer is located between the negative current collector and the second layer. The first layer and the second layer both include graphite. A ratio of an intensity of a D peak to an intensity of a G peak in a Raman spectrum of the graphite in the first layer is A, A ranges from 0.05 to 0.3, a ratio of an intensity of a D peak to an intensity of a G peak in a Raman spectrum of the graphite in the second layer is B, B ranges from 0.4 to 0.8, and 0.2≤B−A≤0.5.

METHOD AND APPARATUS FOR PREPARING ELECTRODE SHEET, ELECTRODE SHEET, AND BATTERY CELL

Resumen de: US20260018650A1

Provided are a method for preparing an electrode sheet, an apparatus for preparing an electrode sheet, an electrode sheet, and a battery cell. The method for preparing the electrode sheet includes: cutting a dry-process electrode film material to form a dry-process electrode film; cutting a current collector material to form a current collector, a size of the current collector being smaller than or equal to that of the dry-process electrode film; and sequentially stacking and pressing a plurality of layers of dry-process electrode films, the current collector, and a plurality of layers of dry-process electrode films to form the electrode sheet, the plurality of layers of dry-process electrode films on a same side of the current collector are arranged in a manner that front and back sides of the plurality of layers of dry-process electrode films alternate with respect to the current collector.

BATTERY PRODUCTION DEVICE, BATTERY PRODUCTION APPARATUS, AND BATTERY PRODUCTION METHOD

Resumen de: US20260018649A1

A battery production device, a battery production apparatus, and a battery production method are disclosed. The battery production device includes a frame, a moving mechanism, and a cover body. The moving mechanism is connected to the frame and has a first station, the moving mechanism being configured to move a first support cup to the first station, the first support cup including a first mounting cavity adapted to receive a battery. The cover body is configured to seal the first support cup located at the first station, thereby sealing the first mounting cavity.

APPARATUS FOR AND METHOD OF MANUFACTURING SECONDARY BATTERY

Nº publicación: US20260018646A1 15/01/2026

Solicitante:

SK ON CO LTD [KR]
SK On Co., Ltd

Resumen de: US20260018646A1

An apparatus for and method of manufacturing a secondary battery are provided. The apparatus for manufacturing a secondary battery includes an alignment box including an alignment space, a plurality of first electrode grippers disposed to be spaced apart from each other in an extension direction of a separator, on one side of the separator extending toward the alignment box, and supporting a first electrode, and a plurality of second electrode grippers disposed to face a gap between the plurality of first electrode grippers, on the other side of the separator, and supporting a second electrode. The plurality of first electrode grippers and the plurality of second electrode grippers are provided to move to be aligned in the alignment space while intersecting with the separator therebetween, so that the first electrode and the second electrode are alternately stacked with the separator therebetween in the alignment space.