Resumen de: US2025210633A1
In the bipolar electrode, a positive electrode active material layer, an electrode current collector, and a negative electrode active material layer are provided in this order, and the positive electrode active material layer includes a first positive electrode active material and a second positive electrode active material having a layered crystal structure, and the first positive electrode active material has a cation mixing ratio of 5.0% or less and an excess lithium ratio of less than 1.0% by mass, and the second positive electrode active material has a cation mixing ratio of 3.3% or less and an excess lithium ratio of less than 0.8% by mass.
Resumen de: US2025210616A1
A negative electrode includes a negative electrode active material layer that contains a silicon-based active material, wherein based on a total thickness defined as a distance between opposing first and second surfaces of the negative electrode active material layer, when a cohesion strength is measured respectively at positions corresponding to 25%, 50%, and 75% of the total thickness from the first surface, an average of the measured cohesion strengths ranges from approximately 1 MPa to 20 MPa, a deviation of the measured cohesion strengths is equal to or less than approximately 140%, and a vertical resistance ranges from approximately 0.005Ω to 0.3Ω.
Resumen de: US2025210635A1
A positive electrode material for a lithium-ion battery, a method for preparing same, and a lithium-ion secondary battery including same. The positive electrode material includes a high-nickel material and a coating layer on the surface of the high-nickel material, wherein the coating layer comprises compound CxHy−nOzLin (I) of formula (I) and compound CxHy−n−1 OzLin+1 (II) of formula (II), wherein x, y, z and n are each independently integers where 1≤x≤10, 2≤y≤20, 2≤z≤12, and 1≤n≤3.
Resumen de: WO2025130215A1
An electrode sheet, comprising a current collector (1) and active coatings (2) coated on two sides of the current collector (1). An active coating (2) on at least one side of the current collector (1) is provided with a plurality of first regions (3) in a first direction, and a region gap between the adjacent first regions (3) is Dm. A plurality of grooves (31) are formed in each first region (3). The distance between the adjacent grooves (31) in a direction perpendicular to the long axis of the grooves (31) is Dt, Dt is greater than Dm, and the first direction is the length direction or the width direction of the electrode sheet.
Resumen de: WO2025130428A1
Provided is a secondary battery, which comprises a positive electrode sheet, a negative electrode sheet and an electrolyte solution, wherein the negative electrode sheet comprises a negative electrode active material layer and a solid electrolyte interface film located on the surface of the negative electrode active material layer, the negative electrode active material layer comprising a silicon-oxygen compound coated with a carbon layer; and the electrolyte solution comprises a fluorine-containing compound and a nitrogen-containing compound. In magic angle spin solid state nuclear magnetic lithium spectrum 7Li MAS ssNMR analysis of the solid electrolyte interface film, the lithium element peak area of LiF at the position of -1.4±0.2 ppm is SLiF, and the lithium element peak area of Li3N at the position of 8.1 ppm is SLi3N. The silicon-oxygen compound coated with a carbon layer has a graphitization degree G, where 1<G×SLiF/SLi3N<5.
Resumen de: WO2025130425A1
A positive electrode slurry, a positive electrode sheet, an electrochemical device comprising the positive electrode sheet, and an electronic device. The positive electrode slurry comprises an active material, a conductive agent, and a dispersant, and the positive electrode slurry satisfies (I), wherein S is the specific surface area of the active material, and has a unit m2/g, D1 is the volume percentage of particles having a particle size less than 300 nm in the active material, A% is the percentage of the mass of the dispersant accounting for the solid mass of the positive electrode slurry, Y% is the percentage of the mass of the conductive agent accounting for the solid mass of the positive electrode slurry, and D2 is the mass percentage of a granular conductive agent in the conductive agent.
Resumen de: WO2025130380A1
A secondary battery and an electronic apparatus. The secondary battery comprises a positive electrode sheet, a negative electrode sheet and a separator, the separator comprising a base film and a coating provided on at least one surface of the base film. The coating comprises a coating material, the coating can melt and flow when the temperature is greater than or equal to 90°C, the coating weight of a single-sided coating is CW g/m2, the density of the coating material is ρ g/cm3, the porosity of the base film is P%, the thickness of the base film is H μm, and 50%≤CW/(ρ×P×H)×100%≤120%, wherein 0.9≤ρ≤1.05, 20≤P≤50, and 3≤H≤10. The separator in the secondary battery can improve the thermal safety performance of the secondary battery.
Resumen de: US2025210742A1
The present invention provides an apparatus for separating and recycling metal elements in cathode materials of lithium batteries, comprising a device for pretreating lithium batteries, configured to obtain a mixture of powders containing positive-electrode materials; a device of acid leaching, configured to obtain leachate; if the to-be-recycled lithium battery contain a lithium iron phosphate battery, the apparatus further comprises a heating furnace for heating the solid products, obtained after acid leaching and solid-liquid filtration, in an oxygen-containing atmosphere; if the to-be-recycled lithium battery contains a ternary lithium battery, the apparatus further comprises a first extraction device for performing extraction on the leachate, wherein diisooctyl phosphate is extraction agent.
Resumen de: US2025206404A1
A time display system for an electrically assisted vehicle includes a display and at least one processor configured or programmed to acquire time information representing information on a time that is output by a battery pack that supplies electric power to an electric motor that generates drive power to cause the electrically assisted vehicle to travel, and to cause the display to display a current time based on the time information.
Resumen de: US2025205918A1
An electrode plate notching apparatus and an electrode plate notching method using the same are disclosed. An electrode plate notching apparatus includes a first mold including a punch hole, a second mold configured to vertically move above the first mold and including a punch, a first body coupled to the first mold and spaced apart from the punch hole, a second body coupled to the second mold and facing the first body, a scrap pusher movably arranged on the second body and configured to discharge a scrap from the punch hole, and a trigger arranged on the first body and configured to move the scrap pusher in conjunction with vertical movement of the second body.
Resumen de: US2025205822A1
A cutting apparatus for producing an electrode film from an incoming film. The apparatus includes a continuous movement device of the incoming film and a cutting unit.
Resumen de: US2025210816A1
A battery pack includes: a plurality of battery cells, each battery cell of the plurality of battery cells having a positive terminal and a negative terminal; one or more top holders and one or more bottom holders adapted to receive end portions of the plurality of battery cells; and one or more top plates arranged on the one or more top holders and one or more bottom plates arranged on the one or more bottom holders, each of the one or more top plates and the one or more bottom plates having a plurality of interconnectors and each of the plurality of interconnectors having a hole and a connecting structure extending from the hole to enable contact with the positive terminal of the battery cell.
Resumen de: US2025210810A1
Provided are an all-solid-state secondary battery and a method of manufacturing the all-solid-state secondary battery. According to an aspect of the present disclosure, there is provided a method of manufacturing an all-solid-state secondary battery, the method including forming a unit stack cell structure including a cathode layer, a solid electrolyte layer, an anode layer, and an elastic layer, inserting the unit stack cell structure into a housing, and foaming the elastic layer, wherein, in the forming of the unit stack cell structure, the elastic layer has a pad shape that is not foamed, and in the foaming of the elastic layer, the elastic layer is in the form of a foam.
Resumen de: US2025210817A1
An interconnector, for connecting a plurality of cells in a battery pack, includes: a main interconnect segment for connecting the plurality of cells, the main interconnect segment having a plurality of openings between a first end and a second end of the main interconnect segment, the plurality of openings being adapted to respective terminals of the plurality of cells in the battery pack; and a plurality of wire bonds connecting the main interconnect segment to the terminals of the plurality of cells, the respective plurality of wire bonds at one end being connected to the terminals of the respective plurality of cells, the respective plurality of wire bonds at another end being connected to a plurality of connecting portions on the main interconnect segment, the plurality of connecting portions being substantially close to the respective terminals of the plurality of cells.
Resumen de: US2025210814A1
Provided are a separator having significantly improved withstand voltage characteristics and a lithium secondary battery including the same. The separator includes a porous substrate and an inorganic particle layer including a binder and inorganic particles formed on at least one surface of the porous substrate, wherein the separator has a ratio of a breakdown voltage (kV) of the separator to an overall average thickness (μm) of the separator of 0.15 kV/μm or more, has a peak in a range of 1070 cm−1 to 1082 cm−1 in a spectrum by Fourier transform infrared spectroscopy (FT-IR), has heat shrinkage rates in the machine direction and in the transverse direction of 5% or less as measured after being allowed to stand at 150° C. for 60 minutes, and has ΔGurley permeability of 100 sec/100 cc or less.
Resumen de: US2025210815A1
Embodiments of the present disclosure relate to a separator having pore diameters D10, D50, and D90 satisfies all of 180 nm≤D10≤350 nm, 380 nm≤D50≤650 nm, and 670 nm≤D90≤1000 nm. The separator according to an embodiment has improved heat resistance by satisfying the predetermined pore diameter ranges, and a battery comprising the separator may have improved performance.
Resumen de: US2025210631A1
A positive electrode material contains a porous carbon material, a positive electrode active material containing sulfur, and a lithium halide, wherein at least a part of the positive electrode active material and at least a part of the lithium halide are placed inside the pores of the porous carbon material. The positive electrode material provides a means for further reducing an internal resistance of a secondary battery.
Resumen de: US2025210619A1
The present technology relates to an electrode slurry coating method and apparatus comprising a pressure adjustment member for adjusting the discharge pressure of slurry, and enables electrode slurry to be discharged under constant pressure even when a coated part and an uncoated part are repeatedly formed on a current collector layer.
Resumen de: US2025210628A1
The present disclosure generally relates to coated micro silicon active material particles and/or a coated anode an anode composition. The present disclosure also relates to an anode for a lithium-ion battery, and anode compositions thereof. The present disclosure also relates to a method of incorporating the anode composition into an electrochemical cell.
Resumen de: US2025210621A1
A method for manufacturing a battery cell includes providing an anode electrode including a nonplanar silicon film arranged on an anode current collector; immersing the anode electrode in a solution comprising lithium metal, an arene, and an organic solvent for a predetermined period to form a pre-lithiation coating on the nonplanar silicon film; and heating the anode electrode to remove the organic solvent and the arene after the predetermined period.
Resumen de: US2025210627A1
A composite electrode, a manufacturing method thereof, and a lithium-ion battery are provided. The composite electrode includes a current collector; and a composite material layer disposed on at least one side surface of the current collector. The composite material layer comprises n-layer active substance layers and n-1-layer lithium supplement layers that are stacked at intervals, in which n is greater than or equal to 3 and n is an integer. A side of the composite material layer which is adjacent to the current collector is one of the n-layer active substance layers. Porosity of the n-1-layer lithium supplement layers gradually increases along a direction away from the current collector.
Resumen de: US2025210620A1
Prelithiated negative electrodes are prepared under controlled conditions. Lithium foils are laminated onto active material layers using sufficient pressure such that heat is generated upon initiation of reaction of between lithium and the active material. The reaction proceeds to completion with the laminated assembly maintained under solvent-free, temperature controlled conditions for up to about 24 hours. The prelithiated negative electrode active material has a voltage against lithium metal of not more than about 1V at a value of lithium uptake of 10% of capacity, and irreversible capacity loss associated with the active material has been eliminated. Roll-to-roll processes and apparatus are described for safe manufacture of hundreds of meters of the prelithiated negative electrodes which can be taken up in roll form to be cut and assembled with other components to form lithium ion cells.
Resumen de: WO2025130427A1
A positive electrode slurry, a positive electrode sheet, an electrochemical device comprising same, and an electronic device. The positive electrode slurry comprises an active material and a conductive agent. The positive electrode slurry satisfies: (I), wherein θ represents the percentage by volume of particles having a particle size less than 300 nm in the active material; X1 represents the percentage of the mass of the active material in the solid mass of the positive electrode slurry; X2 represents the percentage of the mass of the conductive agent in the solid mass of the positive electrode slurry; S1 represents the specific surface area of the active material, with the unit of m2/g; S2 represents the specific surface area of the conductive agent, with the unit of m2/g; D1 represents the particle size distribution coefficient of the active material; and D2 represents the particle size distribution coefficient of the conductive agent. According to the positive electrode slurry satisfying the limiting condition, various components in the slurry can form a good dispersion system, thereby effectively keeping the dispersity and stability of the positive electrode slurry while increasing the solid content of the positive electrode slurry, thus improving the rate and cycle performance of a battery cell and reducing impedance.
Resumen de: WO2025130183A1
A method and system for triggering thermal runaway of a battery, capable of triggering thermal runaway of a battery cell during battery testing. The method comprises: charging a target battery cell in a battery, such that the power level of the target battery cell is greater than the power levels of the remaining battery cells in the battery; and when the power level of the target battery cell is greater than the power levels of the remaining battery cells, charging the battery.
Nº publicación: WO2025130426A1 26/06/2025
Solicitante:
NIO TECH ANHUI CO LTD [CN]
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Resumen de: WO2025130426A1
A dry electrode film. The dry electrode film comprises an active material and a binder. The binder comprises a polymer, and carbon nanotubes and carbon black which are dispersed in the polymer, wherein the average diameter of the carbon nanotubes is 13 nm to 100 nm, and the D/G ratio of the carbon nanotubes is 0.5 to 1.4. Also provided is a method for manufacturing the dry electrode film. On the basis of the total weight of the binder, the sum of the content of the carbon nanotubes and the content of the carbon black is greater than 5 wt%, and the content of the polymer is greater than 40 wt%; and the weight ratio of the carbon black to the carbon nanotubes is 8: 1 to 1: 8.