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1000
results.
Updated on
16/07/2026 [07:55:00]
Results 525 to 550 of 1000
Absstract of: US20260196523A1
0000 According to embodiments of the present disclosure, an aqueous anode slurry may include an anode active material, a binder, and an organic acid compound having at least two oxygen-containing functional groups. In a molecular structure of the organic acid compound, a bond angle between oxygen-containing functional groups is 90° or more, and the content of the organic acid compound may be greater than 0.01 wt % and less than 0.1 wt %, based on the total solid weight of the aqueous anode slurry.
Absstract of: WO2026145689A1
The present application relates to a composite positive electrode material, a positive electrode sheet and a battery. The composite positive electrode material comprises a lithium manganate material and a lithium-rich and sodium-rich manganese-based material, wherein the median particle size of the lithium manganate material is greater than the median particle size of the lithium-rich and sodium-rich manganese-based material. The compaction density PD of the composite positive electrode material satisfies: 1.05×(X1×PD1+X2×PD2)
Absstract of: US20260196489A1
0000 The present disclosure provides a direct synthesis method for making a cathode active material by utilizing used cathode active material. This method utilizes a hydrothermal process comprising mixing a black mass or a processed black mass with an acid solution to generate a first solution, separating at least a portion of undissolved particles from the first solution, generating a second solution by mixing the first solution with a base solution under a hydrothermal condition to synthesize the cathode active material, and separating the cathode active material from the second solution.
Absstract of: US20260196621A1
A battery cell includes a can and an electrode assembly accommodated inside the can. The can includes a bottom member, a sidewall member connected to the bottom member, and a cap covering an open end of the sidewall member. A can connection portion is electrically connected to the electrode assembly. An edge of the cap is welded. The welding includes a plurality of first weld portions connecting an edge of the open end of the sidewall member, an edge of the cap, and the can connection portion and spaced apart from each other in a circumferential direction, and a second weld portion connecting at least an edge of the open end of the sidewall member and an edge of the cap and disposed between the first weld portions. The first weld portion and the second weld portion are formed continuously to be alternately disposed along the circumferential direction.
Absstract of: WO2026144077A1
A method for reducing residual alkali on the surface of a high-nickel positive electrode material and for coating, and a prepared high-nickel positive electrode material and a secondary battery. The method comprises the following steps: placing a high-nickel positive electrode material in a LiOH-alumina sol mixed solution, stirring uniformly, performing pressure filtration and drying, and then sintering a dried product, thereby obtaining a high-nickel positive electrode material having low residual alkali and an alumina coating. In the preparation method, an alkali LiOH solution can reduce exchange between lattice Li+ and H+ in water, thereby weakening the damage of water to the surface lattice of the high-nickel positive electrode material, and simultaneously achieving the purposes of reducing the residual alkali on the surface of the high-nickel positive electrode material and protecting the bulk structure. In addition, by placing the high-nickel positive electrode material in the LiOH-alumina sol mixed solution, the surface of the high-nickel positive electrode material can be covered with an alumina sol layer, and a stable alumina coating is formed after sintering, thereby achieving the effect of optimizing the crystal structure and electrochemical properties of the material.
Absstract of: WO2026144228A1
Disclosed in the present application are a secondary battery and an electronic device. In the winding direction, a first electrode sheet comprises a first starting end. In the direction of thickness of the first electrode plate, an electrode sheet adjacent to the first starting end is a second electrode sheet. A first adhesive layer is disposed on a surface of the first electrode sheet, and the first adhesive layer is arranged between the first starting end and the second electrode sheet in the direction of thickness of the first electrode sheet. The first adhesive layer comprises a first portion, a second portion and a third portion, wherein the second portion comprises a first segment and a second segment, and the first portion, the first segment, the second segment and the third portion are sequentially connected; and the first portion and the third portion are bonded to the first electrode sheet, and in the winding direction, the first portion is close to the first starting end. In the direction of thickness of the first electrode sheet, the first portion, the first segment and the second segment are stacked, and the second portion covers the first starting end; and in the direction opposite the winding direction, the second portion extends beyond the first electrode sheet from the first starting end. The occurrence of short circuits can be reduced, and the safety performance of the secondary battery can be improved.
Absstract of: WO2026144520A1
The present application relates to the technical field of separators, and provides a composite separator, a preparation method therefor, and a use thereof. The composite separator comprises a porous layer. The porous layer comprises an organic polymer resin, inorganic particles, and polymer fibers, the polymer fibers being polymer fibers modified with hydrophilic groups. In the present application, by adding polymer fibers into the porous layer, mechanical support is provided to the porous layer, such that the separator is resistant to bending, thereby improving the mechanical strength of the separator. In addition, hydrogen bond interactions are formed between the hydrophilic groups modified on the polymer fibers and the inorganic particles. Considering also the strong interactions between the polymer fibers and the organic polymer resin, this arrangement helps to fix the inorganic particles within the organic polymer resin, thereby effectively reducing detachment of inorganic particles from the porous layer. As a result, the separator has good air tightness, which helps to maintain the stability and safety of the separator.
Absstract of: US20260196469A1
0000 A battery cell, a battery, an electric apparatus, a cathode electrode sheet, and a method for manufacturing the cathode electrode sheet are provided. The battery cell includes a cathode electrode sheet and an anode electrode sheet stacked along a first direction. The cathode electrode sheet includes a cathode current collector and a cathode active material layer disposed thereon, the cathode active material layer including a first thinned region located on a side facing a cathode tab. The anode electrode sheet includes an anode current collector and an anode active material layer disposed thereon, the anode active material layer including a second thinned region located on a side provided with an anode tab. The second thinned region at least partially overlaps the first thinned region. The first thinned region reduces lithium deintercalation, thereby alleviating lithium precipitation and improving battery performance.
Absstract of: US20260193812A1
A single-crystal cathode material modified by molten salt-assisted valence gradient doping, a preparation method therefor, and use thereof are provided. The preparation method includes the following steps: mixing a transition metal source, a lithium source, a manganese source and a molten salt additive, sequentially performing first sintering and second sintering, and removing the molten salt additive to obtain a doped and modified single-crystal cathode material precursor; tempering the doped and modified single-crystal cathode material precursor to obtain a single-crystal cathode material modified by molten salt-assisted valence gradient doping. The doped and modified single-crystal cathode material may effectively avoid the capacity loss of the material, significantly reduce the lattice mismatch in the lithium deintercalation/intercalation process and relieve the volume strain in the charge and discharge process. Meanwhile, the formed M-O bonds can enhance the structural stability of the material and inhibit the formation of microcracks in the material.
Absstract of: US20260196498A1
0000 In some aspects, the present disclosure provides a rechargeable energy source system. The rechargeable energy source system can comprise a negative electrode comprising a layer of lithium metal having a density of at least about 0.4 g/cm<3 >and an impurity level of less than about 50 ppm by mass. The rechargeable energy source system can comprise a positive electrode that is synthesized to be substantially free of lithium. The positive electrode can have a capacity of at least 250 mAh/g and a gravimetric energy density of at least 800 Wh/kg.
Absstract of: US20260196517A1
The present disclosure provides a dry battery electrode comprising a. at least one active material; b. at least one a primary conductive carbon, said primary conductive carbon having a BET surface area ranging from 250 m2/g to 1800 m2/g; c. at least one secondary conductive carbon, said secondary conductive carbon having a BET surface area ranging from 10 m2/g to 50 m2/g; and d. at least one binder.
Absstract of: US20260196490A1
A negative electrode active material, a negative electrode composition, a negative electrode for a lithium secondary battery including the same, and a lithium secondary battery including the negative electrode. The negative electrode active material includes: a silicon-based active material, and a coating layer surrounding at least a portion of an outer surface of the silicon-based active material, wherein the coating layer includes an active material phase and an inactive material phase, the inactive material phase in the coating layer has a concentration gradient with a concentration decreasing from an outer surface of the coating layer toward an inside of the coating layer, and the active material phase in the coating layer has a concentration gradient with a concentration increasing from the outer surface of the coating layer toward the inside of the coating layer.
Absstract of: US20260196647A1
0000 Disclosed is a battery module, which includes a cell stack including a plurality of battery cells; a module case configured to accommodate the cell stack and having at least one venting hole provided to at one side so that a venting gas discharged from the battery cell is discharged therethrough; a top cover coupled to one side of the module case to form at least one cover hole corresponding to the venting hole; and a venting sheet configured to cover the venting hole and the cover hole, respectively.
Absstract of: US20260196695A1
0000 A battery cell includes an electrode assembly and an insulating member. The insulating member includes a first insulating portion and a second insulating portion connected to each other. The first insulating portion covers a first end face of the electrode assembly, and the second insulating portion covers an outer peripheral face of the electrode assembly. The first insulating portion has a first surface facing away from the first end face and a second surface facing the first end face. The first surface and/or the second surface is provided with a protrusion, thereby improving the gravimetric energy density of the battery.
Absstract of: US20260196518A1
A positive electrode including a positive electrode composite layer disposed on a current collector, the positive electrode composite layer including a positive electrode active material, carbon nanotubes, and carbon black. A ratio, (BETCB)/(BETCNT), of a BET surface area BETCB of the carbon black to a BET surface area BETCNT of the carbon nanotubes is between 1.0 and 3.4, and the carbon nanotubes have a number cumulative average particle size D50CNT ranging from 0.9 μm to 4.0 μm. A positional relationship between the carbon nanotubes and the carbon black within the positive electrode and connectivity with active material particles are excellent, and thus both ionic conductivity and electrical conductivity are improved. Accordingly, a lithium secondary battery offering superior resistance, improved lifespan, and price competitiveness is provided.
Absstract of: WO2026145745A1
The embodiments of present application relate to the technical field of batteries. Specifically disclosed in the embodiments of the present application are a battery cell and a battery pack. The battery cell comprises: a housing, provided with an accommodating cavity; an electrode assembly, provided in the accommodating cavity; a top cover, connected to one side of the housing in a first direction and covering and sealing the accommodating cavity, wherein the top cover is provided with a liquid injection hole; and an insulating member, the insulating member comprising an insulating main body, a plurality of flow guiding portions and a plurality of first flow blocking portions, wherein the insulating main body is provided with a through hole, the through hole is communicated with the liquid injection hole, the plurality of flow guiding portions are arranged around the periphery of the through hole so as to form a flow guiding channel having an opening, the flow guiding channel is communicated with the through hole, the opening communicates the flow guiding channel with the accommodating cavity, and the first flow blocking portions block part of the opening. The present application avoids short circuit of the battery cell caused by tabs of the electrode assembly extending into the through hole and being in contact with the top cover, thus reducing the risk of short circuit between the electrode assembly and the top cover, and ensuring the safety performance of the battery cell.
Absstract of: US20260192474A1
0000 An electrode manufacturing apparatus includes a slitting roll having a knife configured to cut an electrode; and at least one bracket located downstream in a movement direction of the electrode spaced apart from the slitting roll by a predetermined distance, the at least one bracket having a plurality of micro holes provided at a position facing the electrode, the at least one bracket being configured to remove foreign matter generated as a result of cutting the electrode on the slitting roll through the plurality of micro holes.
Absstract of: AU2025256179A1
The present disclosure discloses a polymer additive, a flame retardant, a polymer molding material, and a preparation method and a use thereof. The polymer additive comprises aluminum diethylphosphinate and aluminum ethylbutylphosphinate; the polymer additive satisfies a relationship of 0.90 ≤ ΔH ≤ 1.05, wherein ΔH is a dual enthalpy ratio and defined by Equation (1); the polymer additive further satisfies following relationships: 135 ºC ≤ T1 ≤ 160 ºC, 165 ºC ≤ T2 ≤ 185 ºC, and 180 ºC ≤ T3 ≤ 200 ºC; and the Equation (1) is as follows: ΔH = (H2+H3)/H1. The polymer additive has a specific crystal transition state, and a polymer molding material comprising the polymer additive has lower molding shrinkage during the molding process. The present disclosure discloses a polymer additive, a flame retardant, a polymer molding material, and a preparation method and a use thereof. The polymer additive comprises aluminum diethylphosphinate and aluminum ethylbutylphosphinate; the polymer additive satisfies a relationship of 0.90 H 1.05, wherein H is a dual enthalpy ratio and defined by Equation (1); the polymer additive further satisfies following relationships: 135 °C T1 160 °C, 165 °C T2 185 °C, and 180 °C T3 200 °C; and the Equation (1) is as follows: H = (H2+H3)/H1. The polymer additive has a specific crystal transition state, and a polymer molding material comprising the polymer additive has lower molding shrinkage during the molding process. ct c t
Absstract of: US20260196688A1
A battery cell includes a housing, an electrode assembly, and an electrode terminal. The electrode assembly is accommodated in the housing. The electrode terminal is riveted on a wall portion, and the electrode terminal is electrically connected to the electrode assembly. The electrode terminal includes a flanged portion; the flanged portion is formed at an end of the electrode terminal close to the electrode assembly and located on a side of the wall portion facing the electrode assembly; a continuous connection surface is formed at an end of the electrode terminal facing away from the electrode assembly, and the connection surface is used for connecting to a busbar component. The electrode terminal is a structure riveted onto the wall portion from inside the housing, to enable the busbar component to directly connect to the continuous connection surface at the end of the electrode terminal.
Absstract of: US20260196649A1
A pressure relief component, a battery cell, a battery, and an electric device. The pressure relief component is used for a battery cell; the pressure relief component is provided with at least two pressure relief notches, each pressure relief notch and connecting lines at the two ends of said notch enclosingly form a first region, the plurality of first regions are arranged at intervals, and a connecting line of at least one first region is located on the side of the first region near the center of the pressure relief component.
Absstract of: US20260192307A1
Apparatus (10) for safe and effective shredding of batteries, including lithium-ion batteries, is disclosed. The system integrates a shredding subassembly (12), an auger/screw conveyor subassembly (14), a rotary screen subassembly (16), and an optional solvent recovery/recirculation subassembly (18). Valves/actuators (26, 28) can be coordinated such that a nitrogen blanket or a vacuum is maintained within the shredding assembly and/or the other subassemblies (16, 18). Shredded battery materials are transported to the rotary screen subassembly (16) via the auger-screw conveyor assembly (14) before being washed and split into solid and liquid sub-components (FIG. 1).
Absstract of: US20260194562A1
0000 An electronic device may include: a connector for connection to an external power source; a charging circuit for converting the power provided through the connector; a battery for receiving the power through the charging circuit; and a controller operatively and/or electrically connected to the charging circuit. The controller can be configured to: identify information related to charging; identify a first voltage conversion ratio of the charging circuit based on the information related to charging; control the charging circuit to convert, based on the first voltage conversion ratio, the power provided through the connector; identify, based on the information related to charging, a second voltage conversion ratio different from the first voltage conversion ratio of the charging circuit while the battery is being charged based on the first voltage conversion ratio; and control the charging circuit to convert, based on the second voltage conversion ratio, the power provided through the connector.
Absstract of: WO2026143774A1
The present application relates to the technical field of secondary batteries, and provides a lithium ferrite pre-lithiation additive, a positive electrode material, a positive electrode sheet, and a secondary battery. The lithium ferrite pre-lithiation additive of the present application comprises a core layer and a shell layer coated on a surface of the core layer, a material of the core layer comprises Li5FeO4, a material of the shell layer comprises a carbon material, the lithium ferrite pre-lithiation additive has an ID/IG of 1.0 to 1.2, and the shell layer has an average thickness of 60 nm to 200 nm. The present application effectively improves air stability of lithium ferrite pre-lithiation additives by forming a carbon layer on a surface of a core layer containing Li5FeO4, controlling an ID/IG thereof, and then controlling an average thickness of the shell layer.
Absstract of: US20260194594A1
Disclosed is a defective battery cell determination method including a first step of obtaining resistance values according-to-temperature of a plurality of battery cells, wherein each battery cell of the plurality of battery cells is of an equal type; a second step of measuring a temperature value and a resistance value of a test battery cell, wherein the test battery cell is of the equal type and is not a battery cell of the plurality of battery cells; and a third step of determining whether the measured temperature value and the resistance value of the test battery cell correspond to a predetermined good quality standard based on the obtained resistance values according-to-temperature for the plurality of battery cells, wherein it is determined whether the battery cell is defective based on the value measured in the second step without measuring the time required between the first and second steps.
Nº publicación: WO2026143899A1 09/07/2026
Applicant:
XIAMEN KNANO GRAPHENE TECH CO LTD [CN]
YONGAN KNANO NEW MATERIAL TECH CO LTD [CN]
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\u6C38\u5B89\u5E02\u51EF\u7EB3\u65B0\u6750\u6599\u79D1\u6280\u6709\u9650\u516C\u53F8
Absstract of: WO2026143899A1
A carbon nanotube/graphite hybrid material and a preparation method therefor, and a lithium-ion battery. The preparation method comprises: mixing a surfactant, expanded graphite, and water to prepare a graphite dispersion, and then removing water from the graphite dispersion to obtain modified graphite; mixing the modified graphite, a soluble metal salt, water, and optionally an ammonium salt to prepare a metal salt-graphite dispersion, removing water from the metal salt-graphite dispersion, and then performing low-temperature calcination on an obtained solid product to obtain a metal-supported graphite catalyst; and performing chemical vapor deposition using a carbon source gas to form carbon nanotubes, thereby obtaining the carbon nanotube/graphite hybrid material. The carbon nanotube/graphite hybrid material can be efficiently prepared, and there are good electron transport pathways between the carbon nanotubes and the graphite in the hybrid material, effectively improving the electrochemical performance of the lithium-ion battery.
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