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1394
results.
Updated on
23/12/2025 [07:13:00]
Results 125 to 150 of 1394
Absstract of: US2025385330A1
A method for recycling a waste lithium-ion secondary battery includes (a) loading an object to be heat-treated, which is at least a part of a waste lithium-ion secondary battery including a positive electrode material, into a heat-treatment furnace, (b) increasing the temperature inside the heat-treatment furnace to a range of 200° C. to 400° C., (c) maintaining the increased temperature, and (d) discharging first powder produced after the completion of the heat treatment of the waste lithium-ion secondary battery, wherein the first powder includes valuable metal powder containing a valuable metal composition of the positive electrode material.
Absstract of: WO2025255898A1
The present application relates to the technical field of batteries, and provides a cell welding structure, a welding method, and a battery. The cell welding structure comprises: a winding body; a plurality of tab groups formed at an end portion of the winding body, the plurality of tab groups being radially arranged around the center of the winding body; and a current collector, welded to the side of the plurality of tab groups facing away from the winding body to form a plurality of welding spots. The present application can improve the uniformity of current conduction between die-cut tabs and electrode sheets, reduce the amount of current loss, reduce the number of welding spots, and improve work efficiency.
Absstract of: WO2025255774A1
The present invention relates to a method for preparing a nanometer sodium vanadium phosphate material, comprising the following preparation steps: 1) weighing raw materials, the raw materials consisting of a tetravalent vanadium compound, a sodium phosphate salt and sodium fluoride, or the raw materials consisting of a tetravalent vanadium compound and a sodium phosphate salt; and 2) placing the raw materials in a high-speed homogenizing mill to complete a rapid nucleation process and control a crystal growth process. The present invention takes use of the principle of atom economy, and uses the milling device having a high power and a high rotation speed to perform efficient preparation of the nanometer sodium vanadium phosphate. The present invention achieves efficient atom utilization of the raw materials, and avoids generation of unnecessary waste materials and waste of the raw materials, which omits waste liquid treatment steps involved in solvent emission and washing processes, thereby achieving green preparation. On the basis of the milling device having a high power and a high rotation speed, high-speed collision is achieved to accelerate the reaction and to efficiently control the particle size of the product, thereby achieving nano-scale preparation. The present invention has the advantages of simple operation, high efficiency, easy industrial scale-up production and the like and helps to promote the research, popularization and application of the sodium vanadium p
Absstract of: WO2025255777A1
A resin polymer, a resin composition and a preparation method therefor, a modified binder, an electrode slurry, an electrode sheet, and a battery. The resin polymer is a linear polymer or a branched polymer. When the resin polymer is a linear polymer, the resin polymer has a backbone composed of repeating unit a, repeating unit b1, repeating unit c, and repeating unit d. When the resin polymer is a branched polymer, the resin polymer has a backbone composed of repeating unit a, repeating unit b2, repeating unit c, and repeating unit d. The repeating unit b2 contains branched chain E, and the branched chain E contains one or more of the repeating unit a, the repeating unit b1, the repeating unit c, and the repeating unit d. An electrode sheet prepared from the resin polymer and the resin composition has excellent tensile strength, elastic modulus, and corrosion resistance, and a battery prepared from the electrode sheet has a long cycle life.
Absstract of: WO2025259037A1
Provided is a positive electrode active material in the form of secondary particles in which primary particles comprising a lithium transition metal composite oxide are aggregated. The lithium transition metal composite oxide comprises lithium, nickel, and manganese, and additionally comprises molybdenum as a doping element, wherein the molar content of manganese in the lithium transition metal composite oxide is greater than the molar content of nickel. The primary particles have an average particle size of 0.5 μm to 1.5 μm, and the secondary particles have a particle size (D50) of 1.0 μm to 2.5 μm. The positive electrode active material has a large particle size, compression density, and the like even though prepared by sintering at a lower temperature by doping molybdenum, and when the positive electrode active material is applied to an electrode, the average voltage and energy density can be improved.
Absstract of: WO2025259035A1
Provided is a positive electrode active material in the form of secondary particles in which primary particles including a lithium transition metal composite oxide are aggregated. The lithium transition metal composite oxide contains lithium, nickel, and manganese, wherein the molar content of manganese is greater than that of nickel. The primary particles have an average particle size of 50 nm to 500 nm, and the secondary particles have a particle size (D50) of 0.5 ㎛ to 1.5 ㎛. With the characteristics such as particle size, specific surface area, etc., the positive electrode active material can improve battery performance when applied to electrodes, for example by increasing initial discharge capacity and reducing internal resistance.
Absstract of: WO2025259634A1
Lithium-ion batteries, battery modules and battery packs are provided that comprise anti-propagation systems designed to mitigate a thermal runaway condition. A battery module comprises a housing comprising a plurality of lithium-ion battery cells each having a positive terminal and a negative terminal, and a flexible container housing a liquid and positioned adjacent to the positive terminal of at least one of the battery cells. The flexible container comprises a material configured to melt at a temperature at or above a threshold temperature for quenching a thermal runaway event in the battery pack to prevent the thermal runaway from propagating and spreading to other battery cells or modules within the pack. The battery module comprises a reinforcement substrate secured to the flexible container. The reinforcement substrate provides structural rigidity to the flexible container and functions to inhibit thermal runaway eject from passing therethrough to other battery modules within the battery pack.
Absstract of: WO2025259041A1
Disclosed is an air dancer for a high-speed web transfer system, comprising: a web guide unit having an upper roll and a lower roll installed on a web transfer path to be freely rotatable while facing each other in the vertical direction along the web transfer direction, thereby guiding webs in the transfer direction; and a tension control unit for controlling the tension of webs by applying a negative pressure to webs passing between the upper roll and the lower roll.
Absstract of: WO2025259042A1
Disclosed is an electrode plate pick-and-place device comprising: an suction plate for picking up an electrode plate from the preceding device and placing the picked-up electrode plate on the succeeding device; a rotation driving unit for allowing the suction plate to pick up the electrode plate and rotate forward and backward to place the picked-up electrode plate; and a transfer unit for transferring the suction plate to an electrode plate pickup position and a place position.
Absstract of: WO2025256204A1
Provided in the present application are a secondary battery and an electronic apparatus. The secondary battery comprises a positive electrode and an electrolyte. The positive electrode comprises a lithium composite metal oxide, a binder, and an inorganic additive. A metal element in the inorganic additive comprises at least one of aluminum, magnesium, titanium, zirconium, niobium, indium, tungsten, tin, zinc, or antimony. The electrolyte comprises fluoroethylene carbonate, a nitrogen-containing lithium salt, and propyl propionate. In the secondary battery provided in the present application, when, on the basis of the mass of the electrolyte, the total mass percentage content of the fluoroethylene carbonate and the nitrogen-containing lithium salt is 0.76% by mass or more, but 10.17% by mass or less, and the mass percentage content of the propyl propionate is 12% by mass or more, but 65% by mass or less, the lithium-ion acceptance of the secondary battery at a low temperature can be improved, an increase in the initial electric resistance thereof at a low temperature can be inhibited, and the high-temperature performance of the secondary battery can also be improved.
Absstract of: WO2025256172A1
Disclosed in the present application are a battery and an electric apparatus. The battery comprises battery cells and busbar components, wherein each battery cell comprises a casing and electrode terminals, the casing having a first wall, and the electrode terminals being arranged on the first wall; the busbar components are connected to the electrode terminals, and the busbar components are configured to electrically connect the plurality of battery cells; and each busbar component is provided with an accommodating portion, and at least part of each electrode terminal is accommodated in the accommodating portion. In the direction of thickness of the first wall, the electrode terminals and the busbar components can share part of the space, thereby increasing the space utilization rate and increasing the energy density of the battery.
Absstract of: WO2025256205A1
Disclosed in the present application are a secondary battery and an electronic device. The secondary battery comprises an electrolyte and a separator, wherein the separator comprises a polyolefin substrate and a coating disposed on at least one surface of the polyolefin substrate, the coating comprising inorganic particles; and the electrolyte contains specific amounts of an ether nitrile, butanedinitrile, a propionate and a boron-containing lithium salt. In the present application, by setting the total content of the ether nitrile, the butanedinitrile and the propionate in the electrolyte within a specific range and setting the total content of the butanedinitrile and the boron-containing lithium salt within a specific range, the decomposition of the ether nitrile and the propionate is inhibited, and the formation of a stable coating film therefrom on a surface of a positive electrode is facilitated; therefore, not only can the heat resistance of the separator be improved, but the safety performance and vibration resistance of the secondary battery can also be significantly improved.
Absstract of: US2025385301A1
Described herein is a chalcogen-halide solid electrolyte material represented by the following chemical formula: LiAxEyGz, or NaAxEyGz. In embodiments, A denotes one or more elements selected from the group consisting of magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), Lanthanum (La), cerium (Ce), samarium (Sm), and boron (B). In embodiments, E denotes one or more chalcogen elements. In embodiments, G denotes one or more halide elements. In embodiments, the following mathematical formula is satisfied: 0
Absstract of: US2025385292A1
The present invention relates to a secondary battery in which an electrode tab is improved in mechanical strength and a method for manufacturing the same. Also, the secondary battery according to the present invention includes: an electrode provided with a coating portion coated with an active material on an electrode collector and a non-coating portion on which the active material is not applied to the electrode collector in a longitudinal direction of the electrode collector and a notching tab part extending from the coating portion in a width direction of the electrode collector without coating with the active material and overlapping each other to form two or more layers when the electrode is wound.
Absstract of: US2025385294A1
The present disclosure discloses an electrode assembly structure that facilitates impregnation of electrolyte and discharge of gas, and reduces the risk of fire due to short circuit. The electrode assembly structure according to one aspect of the present disclosure includes a first electrode assembly wound around a winding axis, and a second electrode assembly wound around the winding axis, adjacent to the first electrode assembly, and located outer than the first electrode assembly in a radial direction.
Absstract of: US2025385308A1
Provided are an electrolyte solution for a rechargeable lithium battery and a rechargeable lithium battery including the same, wherein the electrolyte solution includes a non-aqueous organic solvent, a lithium salt, a first additive represented by Formula 1 above, and a second additive represented by Formula 2 above.
Absstract of: US2025385321A1
This application provides an electrolyte, a secondary battery, and an electric apparatus. The electrolyte includes a cyclic sulfate compound represented by Formula I and a metal ion additive. The cyclic sulfate compound and the metal ion additive contribute to the formation of a stable SEI film, thereby facilitating an improvement in the rate performance of the battery.
Absstract of: US2025385291A1
Embodiments of the present disclosure relate to an electrode plate notching device capable of automatically correcting a bias of a press pressure transmitted to a mold during a notching process of an electrode plate, thereby preventing or reducing molding errors. An electrode plate notching device includes a lower press, a first mold seated on the lower press and including a punch hole, a second mold movable up and down above the first mold and including a punch, an upper press arranged above the second mold and movable vertically, and a correction unit connecting the upper press to the second mold and capable of multi-axis alignment.
Absstract of: WO2025259050A1
The present invention relates to a negative electrode material comprising a red phosphorus coating for a secondary battery enabling high-rate charging and exhibiting high cycle characteristics, and a method for manufacturing same. In the present invention, a uniform and thin red phosphorous coating layer and a carbon coating layer are formed on graphite, leading to high electron and lithium-ion permeability, and thus can suppress lithium precipitation on the surface of the electrode and exhibit high-rate charge and discharge characteristics and excellent cycle characteristics.
Absstract of: WO2025258808A1
The present invention relates to a secondary battery pressing device and a secondary battery pressing method using same, the secondary battery comprising a battery case accommodating an electrode assembly in which a pair of electrode leads are positioned to face each other, and a sealing part at an edge of the battery case. The secondary battery pressing device comprises: a pair of pressing plates for pressing one surface and the other surface of the battery case; and a pair of contact members in close contact with a corner part of the battery case by the pair of pressing plates.
Absstract of: WO2025258664A1
A non-aqueous electrolyte secondary battery according to the present disclosure comprises: a long positive electrode; a long negative electrode; a long separator disposed between the long positive electrode and the long negative electrode; and a non-aqueous electrolyte, wherein the long positive electrode, the long negative electrode, and the long separator are wound in the length direction to form a wound body, the central portion of the wound body has a separator wound portion formed by winding the long separator 15-40 times, and the thickness of the long separator is 0.01-0.03 mm.
Absstract of: WO2025259000A1
Disclosed are a current collector plate implemented so that a fuse element electrically connects a rivet terminal and a tab of an electrode of an electrode assembly, and a cylindrical battery cell to which same is applied. A terminal connection part of the current collector plate is provided on a center plate disposed at the center portion of the current collector plate, an electrode connection part is provided on a peripheral plate having a closed loop shape surrounding the center plate, and the fuse element is implemented by a bridge radially connecting the center plate and the peripheral plate. Only by limiting the width and length of the bridge, the bridge can be configured as a fuse element having a fast fusing speed while suppressing an increase in internal resistance due to the bridge.
Absstract of: WO2025258733A1
The present invention relates to a positive electrode additive for a secondary battery, a positive electrode slurry comprising same, and a lithium secondary battery comprising same, wherein the positive electrode additive may include a compound represented by chemical formula 1 or chemical formula 2. The details of chemical formula 1 and chemical formula 2 are as described in the specification.
Absstract of: US2025385250A1
Provided is an all-solid-state lithium batteries (ASSLBs), Li-based cathode materials and structures incorporated therein and to methods of producing said materials, structures and batteries.
Nº publicación: US2025385268A1 18/12/2025
Applicant:
SK ON CO LTD [KR]
SK ON CO., LTD
Absstract of: US2025385268A1
A cathode current collector for a lithium secondary battery according to embodiments of the present invention may include a first metal layer which includes a first region and a second region having a thickness smaller than that of the first region, and a second metal layer disposed on the second region of the first metal layer and having a different composition from the first metal layer. Accordingly, when the cathode current collector is coupled with a cathode tab, etc., heat generation due to a difference in resistance at the coupled portion may be prevented.
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