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1807
results.
Updated on
12/05/2025 [07:18:00]
Results 850 to 875 of 1807
Absstract of: WO2025086390A1
Disclosed is a preparation method for a lithium metal electrode. The preparation method comprises the following steps: step S1, preliminary work; step S2, forming an alloy liquid; step S3, coating the alloy liquid; and step S4, monitoring and feeding back the coating result. The lithium metal electrode is formed by coating the alloy liquid containing lithium metal on a conductive substrate, and the thickness of the lithium metal electrode can be adjusted by adjusting the coating thickness of the alloy liquid, so as to improve the simplicity of the thickness adjustment of the lithium metal electrode, and the consistency of the coating thickness of the alloy liquid is convenient to control; in addition, the lithium metal and an auxiliary metal are mixed to form the alloy liquid, such that the affinity with the conductive substrate can be enhanced, thereby improving the stability of connection between the alloy liquid and the conductive substrate, and by monitoring the actual coating thickness of the alloy liquid, and adjusting the coating speed according to the coating thickness, the technical effect of improving the coating thickness accuracy can be achieved.
Absstract of: WO2025086213A1
A modified lithium iron phosphate, a preparation method therefor and a use thereof. The preparation method comprises the following steps: (1) mixing a zirconium salt, a tungstate and a solvent, to obtain a mixed salt solution, adjusting the pH, then adding lithium iron phosphate and performing a heating reaction; (2) separating a slurry obtained by the heating reaction into a solid and a liquid, and subjecting the obtained solid to a one-step sintering treatment, to obtain a first sintered material; (3) mixing an organic carbon source, a lithium source and the first sintered material, and performing a second sintering treatment, to obtain a modified lithium iron phosphate. A material having a negative thermal expansion effect is used as a coating layer, which is then coated with an electrically conductive material, causing pores to appear during a second coating process due to the negative thermal expansion effect, which is conducive to the embedding of organic matter and improves bonding tightness between the two layers of coatings. The pores generated during the negative thermal expansion process are conducive to the entry of lithium ions, which can better generate lithium tungstate and lithium zirconate from the tungsten oxide and zirconium oxide generated by decomposition.
Absstract of: WO2025089638A1
A cathode mixture containing a lithium sulfide composite and a solid electrolyte, a cathode comprising same, an all-solid-state secondary battery comprising the cathode, and a manufacturing method therefor, are presented, wherein in an X-ray diffraction analysis spectrum for the cathode mixture, a first peak appearing at a diffraction angle 2θ of 26 to 27.5 degrees has a first intensity (IA), a second peak appearing at a diffraction angle 2θ of 30.02 to 30.06 degrees has a second intensity (IB), and an intensity ratio (IB/IA) of the first intensity to the second intensity satisfies 1
Absstract of: WO2025089639A1
Provided are a secondary battery having high sealing reliability and a sealing device which is for manufacturing the secondary battery and capable of reducing tact time. A secondary battery according to the present invention includes a battery case which has embedded therein an electrode assembly having electrode leads protruding therefrom and which includes a sealing portion structured to include a sealed outer periphery portion. The sealing portion includes: a first sealing portion at the electrode lead side of the battery case; and a second sealing portion at the electrode lead side of the battery case, wherein the first sealing portion and the second sealing portion each include one end and the other end in the protruding direction of the electrode leads, and the other end of the second sealing portion extends in a direction opposite to the protruding direction of the electrode leads and further than the other end of the first sealing portion.
Absstract of: WO2025089861A1
The present invention relates to an electrode separation device, an electrode transfer device including the electrode separation device, and an electrode transfer method. The electrode separation device includes: a plurality of adsorption units for respectively adsorbing two or more points on one surface of an electrode; a vibration control unit for applying vibration to the electrode; and a stretching unit horizontally moving at least one of the adsorption units toward or away from at least one of the remaining adsorption units to unfold the electrode adsorbed to the adsorption unit.
Absstract of: WO2025089164A1
This power storage element comprises: an electrode body in which electrode plates are wound; a container accommodating the electrode body; and a pair of terminals disposed on the container. The electrode body has a flat shape including a pair of curved portions facing each other, and a flat portion connecting the pair of curved portions. The container includes a pair of curved wall portions respectively facing the pair of curved portions, and flat wall portions respectively facing both surfaces of the flat portion of the electrode body. The pair of curved wall portions are a first curved wall portion and a second curved wall portion. The inner surface of the first curved wall portion and the inner surface of the second curved wall portion have a curved shape that follows the curved portions of the electrode body. The inner surfaces of the flat wall portions have a flat shape that follows the flat portion of the electrode body. The pair of terminals are disposed on one or a plurality of wall portions, among the wall portions constituting the container, of which the direction from the second curved wall portion toward the first curved wall portion is aligned with a direction penetrating the container from the inner surface to the outer surface thereof, and protrude in the direction from the second curved wall portion toward the first curved wall portion.
Absstract of: WO2025087414A1
A single-crystal positive electrode material and a preparation method therefor, and a lithium ion battery. The single-crystal positive electrode material is a particulate matter, and the particulate matter comprises an inner-layer material and a cladding layer covering the surface of the inner-layer material, wherein the particulate matter comprises a first particle having an average particle size F1 of 1.0-2.0 μm and a second particle having an average particle size F2 of 2.5-6.0 μm, and the average thickness T1 of a cladding layer of the first particle is smaller than the average thickness T2 of a cladding layer of the second particle; the cladding layer comprises a fast ion conductor; the molecular formula of the inner-layer material is: Li1+aNixCoyMzQbO2±cAd, wherein 0≤a<0.20, 0.60≤x<1.0, 0
Absstract of: WO2025086939A1
Provided in the present application are an electrode sheet and a battery. The electrode sheet comprises a current collector, and an active substance layer which is provided on at least one functional surface of the current collector, wherein the active substance layer contains graphite. In the extension direction of the current collector, the active substance layer comprises recesses and a main body portion, wherein each of the recesses is provided with a groove, which does not penetrate the recess, in the side of the recess that faces away from the current collector, and each of the recesses comprises a first region that faces away from a surface of the current collector and a second region which is close to the surface of the current collector. The degree of orientation of graphite in the first region is lower than the degree of orientation of graphite in the main body portion, wherein the degree of orientation of graphite refers to the intensity ratio of the diffraction peak of the 004 crystal plane of the graphite to the diffraction peak of the 110 crystal plane of the graphite. By means of applying the electrode sheet to a battery, the quick charge performance of the battery can be improved, and the cyclic expansion rate of the battery can be lowered.
Absstract of: WO2025086940A1
A preparation method for and a use of a lithium-silicon alloy material. Under room temperature conditions, a layer of asphalt is pre-coated on the surface of a lithium-silicon alloy, and then a layer of LiF is coated, a lithium-silicon alloy negative electrode sheet is prepared via dry processing, and then assembly is performed to obtain a sulfide all-solid-state lithium battery. This lithium-silicon alloy negative electrode has high capacity (greater than 1500 mAh g-1). Coating materials having adhesive properties are selected to sequentially perform carbon coating and fluorine coating on the lithium-silicon alloy, so that the lithium-silicon negative electrode sheet can be easily prepared at room temperature. This two-layer coating method, while ensuring that the capacity of the lithium-silicon alloy is not reduced, improves the electronic conductivity of the lithium-silicon alloy negative electrode, effectively suppresses the formation of lithium dendrites on the negative electrode, and facilitates the formation of a compatible negative electrode interface with a sulfide solid-state electrolyte, thereby enabling the commercial application of sulfide all-solid-state lithium batteries.
Absstract of: WO2025086140A1
The present invention relates to the technical field of retired battery recycling, and to a DRT-based method for efficiently recovering lithium from retired battery powder, and an application thereof. The method comprises: mixing retired battery powder, a carbon reducing agent and an A-site reaction material containing rare earth ions or alkaline earth ions, and carrying out reduction roasting to form reduced battery powder containing a perovskite-type oxide ABO3; mixing the reduced battery powder with water, and introducing carbon dioxide for carbonization leaching, to obtain a leachate material; carrying out solid-liquid separation on the leachate material, wherein the filtrate contains lithium bicarbonate; and carrying out impurity removal and pyrolysis on the filtrate to obtain battery-grade lithium carbonate. According to the present invention, synthesis of a perovskite-type oxide during reduction of battery powder is coupled and coordinated with carbonization leaching, so that carbon dioxide can be fixed, making the carbonization reaction more complete, and reducing the leaching of nickel, cobalt and manganese metals to obtain a pure lithium solution; subsequently, only simple impurity removal is required to obtain battery-grade lithium carbonate by pyrolysis.
Absstract of: WO2025086200A1
A modified lithium-rich manganese-based positive electrode material, and a preparation method therefor and the use thereof. The preparation method comprises the following steps: (1) injecting a mixed metal salt solution, a precipitant, a complexing agent, a cationic dopant and an anionic dopant into a reaction device in a parallel flow manner, and subjecting same to a co-precipitation reaction; (2) washing the product of the co-precipitation reaction, so as to obtain a modified lithium-rich manganese-based precursor; and (3) mixing the modified lithium-rich manganese-based precursor with a lithium source, and sintering same, so as to obtain a modified lithium-rich manganese-based positive electrode material. By means of the co-precipitation reaction, uniform atom-scale co-doping of anions and cations is achieved, the content of doping atoms is precise and controllable, and the problems of introduction of impurities, element segregation and even component deviation caused by traditional solid-phase reactions are avoided.
Absstract of: WO2025086098A1
A coated sodium ion battery positive electrode material, a preparation method therefor, and a use thereof. The coated sodium ion battery positive electrode material comprises an aluminum phosphate shell and a sodium ion battery core; and the chemical formula of the sodium ion battery core is: NaaLibNixFeyMnzCumMnO2+w, wherein a+b=1, 0.8≤a≤1.0, 0
Absstract of: WO2025089853A1
Provided is a current collecting plate that is connected to an electrode tab provided at one end among the two ends of the electrode assembly in the axial direction, wherein the one end is inserted into a can while facing the bottom thereof. The current collecting plate comprises: a terminal joint part that has one side surface joined to a cap, the bottom of the can, or an electrode terminal; an electrode joint part that surrounds the terminal joint part from the outside of the terminal joint part in the radial direction and has the other side connected to the electrode tab of the electrode assembly; elastic connection parts that are disposed between the electrode joint part and the terminal joint part and electrically connect the electrode joint part and the terminal joint part; and an opening that is disposed between the elastic connection parts adjacent in the circumferential direction and separates the electrode joint part and the terminal joint part in the radial direction or the axial direction.
Absstract of: WO2025089415A1
One embodiment of the present invention relates to a carbon nanotube dispersion composition containing a carbon nanotube, a dispersant, and a solvent, wherein the content of metal foreign particles determined under specific condition 1 is 1.0 mg or less.
Absstract of: WO2025089413A1
The present invention is capable of providing: a method for producing a carbon material dispersion that contains a small amount of metal magnetic foreign matter in the carbon material dispersion and that exhibits excellent temporal stability; and, additionally, a secondary battery using said carbon material dispersion and having good cycle characteristics. The present disclosure relates to a method for producing a carbon material dispersion containing a carbon material, a dispersant, and a solvent, the method comprising the following steps (1) to (3). Step (1) A step for obtaining a carbon material pre-dispersion (X1) having a sliding angle of less than 70° with respect to a metal substrate and a cumulative particle diameter D50 of 20 μm or greater. Step (2) A step for obtaining a carbon material pre-dispersion (X2) by removing metal magnetic foreign matter by magnetic separation treatment simultaneously with and/or after the production of the carbon material pre-dispersion (X1). Step (3) A step for producing a carbon material dispersion by dispersing the carbon material pre-dispersion (X2).
Absstract of: WO2025089381A1
This lithium ion secondary battery comprises a positive electrode, a negative electrode, an electrolytic solution, and a separator. The negative electrode operates by intercalation of lithium ions. The electrolytic solution contains a nonaqueous solvent and a lithium salt, and has a lithium salt concentration of 2.5 mol/L or more. The separator has a polyolefin microporous film, a fibrous meta-type aromatic polyamide included in the pores of the polyolefin microporous film, and a porous layer that is provided to one surface or both surfaces of the polyolefin microporous film and contains a meta-type aromatic polyamide.
Absstract of: WO2025086926A1
Provided in the present application is a thermal management device for an electric vehicle, comprising a connecting device. The connecting device comprises: an air inlet arranged on a first end thereof; an air outlet arranged on a second end thereof; and a channel arranged inside the connecting device and adapted for passage of air, one end of the channel being provided with the air inlet, and the other end of the channel being provided with the air outlet. The air inlet is used for receiving air; the air flowing in through the air inlet has a temperature lower than the ambient temperature of the environment in which the thermal management device is located; and the air flows out through the air outlet after passing through the channel. The second end of the connecting device is configured to connect or come into contact with a grille of the electric vehicle; the edge of the second end of the connecting device can enclose the grille of the electric vehicle; and the air flowing out through the air outlet has a temperature lower than the ambient temperature, thus cooling components in the grille.
Absstract of: WO2025086917A1
The present invention relates to the field of batteries, and in particular relates to a negative electrode sheet and a battery comprising the negative electrode sheet. The negative electrode sheet comprises a negative current collector and a negative electrode active coating on at least one side surface of the negative current collector. The negative electrode active coating comprises a negative electrode active material and a conductive agent. The negative electrode active material comprises a silicon-based material, and the conductive agent comprises a conductive material having a two-dimensional layered structure. Said conductive material has an interlayer spacing of D and a peel energy of N, satisfying 0.4 ≤ D/N ≤ 10. The negative electrode sheet comprises a conductive agent having a two-dimensional layered structure and a silicon-based material, such that the energy density and cycle life of the battery can be remarkably improved.
Absstract of: WO2025086916A1
A binder and a preparation method therefor, a battery and an electric device. The binder comprises an acrylate polymer, the number-average molecular weight of the acrylate polymer is 10 kDa to 3,000 kDa, the molecular structure of the acrylate polymer contains a side-chain group, and the side-chain group comprises a fluorinated segment, a cyano segment and a cross-linkable segment, wherein the mass proportion of a fluorine element in the molecular structure is 3%-30%, and the mass proportion of a cyano group in the molecular structure is 10%-40%.
Absstract of: WO2025086892A1
A secondary battery, the secondary battery comprising a positive electrode sheet, a negative electrode sheet, and an electrolyte. The positive electrode sheet comprises a positive current collector, a base coating layer, and a positive electrode active material layer, the base coating layer being arranged between the positive current collector and the positive electrode active material layer. The base coating layer comprises an inorganic metal oxide, the element M in the inorganic metal oxide comprises at least one of Al, Ti, Sn, Sb, or Mg, and the inorganic metal oxide has a mass percentage content W1 of 55% to 99%. A first compound in the electrolyte comprises at least one of fluoroethylene carbonate, difluoroethylene carbonate, formula (I), formula (II), or formula (III), and the mass percentage content of the first compound is a%, 0.15 ≤ a ≤ 21. By regulating and controlling the type of element included in the inorganic metal oxide, W1, and the type and content of the first compound in the electrolyte to be within the ranges above, the safety performance of the secondary battery can be improved while the cyclic stability of the secondary battery is ensured.
Absstract of: WO2025086348A1
Provided are an electrode sheet and a preparation method therefor. The electrode sheet comprises a current collector, a transition layer, and an active material layer. The transition layer is connected to the current collector, and a first groove is formed on the side of the transition layer away from the current collector. The active material layer is connected to the current collector, the active material layer covers the transition layer, at least part of the active material layer is located in the first groove, the active material layer is provided with a removal region, and the removal region corresponds to the transition layer. By forming the first groove on the side of the transition layer away from the current collector, compensation space can be provided in the thickness direction of the current collector, such that a portion of the active material layer can fill the first groove to reduce the height of a protrusion formed on the surface of the active material layer. Thus, after removing part of the active material layer in the removal region, the height of the protrusion on the surface of the active material layer and a height difference between the protrusion and the transition layer are reduced, thereby effectively reducing the probability of wrinkling of electrode sheets after the completion of a rolling process, and ensuring the yield of electrode sheets.
Absstract of: WO2025086372A1
Disclosed is a cylindrical battery, comprising a housing, bare cells, a first current collector, a second current collector, and a cover plate, wherein the housing comprises a columnar main body, with a first opening being provided in one end of the columnar main body and a second opening being provided in the other end of the columnar main body; a first full-tab is provided at one end of each of the bare cells and a second full-tab is provided at the other end of the bare cell, the first full-tab being connected to the cover plate by means of the first current collector; the other end of the columnar main body extends into the second opening to form a connecting portion, the connecting portion bends toward the first opening to form an annular connecting surface, and the annular connecting surface bends toward an axis of the columnar main body to form a bearing surface; and the second current collector comprises an outer edge which is in lap joint with the bearing surface and which is connected to the bearing surface by means of laser welding, and a protrusion protruding toward the first opening, the protrusion being connected to the second full-tab by means of laser welding. The present application uses laser penetration welding, which provides firm welding and effectively meets the requirements of high charging and discharging rates of cylindrical power batteries.
Absstract of: WO2025086389A1
A method for preparing a lithium metal electrode, comprising: step S1, preparing molten lithium; step S2, adding auxiliary metal to the molten lithium, and mixing and stirring to form an alloy liquid; step S3, cooling the alloy liquid to a target temperature, and heating a conductive substrate to a preset temperature, such that the temperature difference between the target temperature and the preset temperature is within a preset range; and step S4, coating the conductive substrate with the alloy liquid to obtain a lithium metal electrode. The lithium metal electrode is formed by coating the conductive substrate with the alloy liquid containing lithium metal, and the thickness of the lithium metal electrode can be adjusted by adjusting the coating thickness of the alloy liquid, thereby improving the flexibility and convenience of thickness adjustment of a lithium battery. Additionally, the lithium metal and the auxiliary metal are mixed to form the alloy liquid, so that the affinity with the conductive substrate can be enhanced, and thus the technical effect of improving the stability of connection between the alloy liquid and the conductive substrate is achieved.
Absstract of: WO2025089825A1
The present application relates to a negative active material, a method for preparing same, a negative electrode composition, a negative electrode for a lithium secondary battery comprising the negative electrode composition, and a lithium secondary battery comprising the negative electrode. Etching the crystalline surface by surface-etching the crushed silicon-based active material itself via alkaline solution treatment allows lithium ion mobility to be controlled, and the specific surface areas of the 111 and 220 planes in the silicon-based active material can be adjusted in response to changing etching conditions, thereby allowing intercalation/deintercalation reaction of lithium to be even, and the stress to the silicon-based active material to be reduced.
Nº publicación: WO2025089824A1 01/05/2025
Applicant:
LG ENERGY SOLUTION LTD [KR]
\uC8FC\uC2DD\uD68C\uC0AC \uC5D8\uC9C0\uC5D0\uB108\uC9C0\uC194\uB8E8\uC158
Absstract of: WO2025089824A1
The present invention is characterized in that negative active material comprises silicon-based active material, the specific surface area of which is 5 m2/g or greater, the silicon-based active material being porous with internal pores, having tap density of 0.2-0.8 g/cm3, comprising at least one selected from the group consisting of SiOx (x=0) and SiOx (0
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