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1568
resultados
Última actualización
08/11/2025 [07:55:00]
Resultados 425 a 450 de 1568
Resumen de: EP4645476A1
The present application provides a current collector, comprising a base layer, a first metal layer, and a second metal layer. The first metal layer is disposed on at least one surface of the base layer; the second metal layer is disposed on the surface of the first metal layer facing away from the base layer; the first metal layer comprises elemental iron or an iron alloy; the second metal layer comprises at least one of a metal layer formed by any one of copper, tin, lead, molybdenum, chromium and nickel, an elemental metal stack formed by any two or more of the elements, and an alloy layer formed by any two or more of the elements. Additionally, the present application relates to a corresponding preparation method for the current collector, and a secondary battery and an electric device. The current collector of the present application can enable the secondary battery to have a long service life.
Resumen de: EP4644324A1
The present invention relates to a yolk-shell-structured silicon-carbon composite, a preparation method therefor, and an anode active material comprising same. The yolk-shell-structured silicon-carbon composite according to an embodiment of the present invention can be prepared without using strong acids, and can have uniform voids formed using, as a sacrificial layer, an inorganic layer with uniform thickness so as to accommodate, when used as an anode active material , silicon volume expansion, and thus can suppress peeling off, caused thereby, of the outermost carbon thin film. As a result, deterioration in battery performance and lifespan can be suppressed.
Resumen de: EP4644323A1
The present invention relates to a silicon-polymer composite, a preparation method therefor, and an anode active material comprising same. In the silicon-polymer composite according to an embodiment of the present invention, the original shape of silicon particles is preserved because a polymer thin film has excellent thickness uniformity, and the polymer thin film has little impact on electrical conductivity and lithium-ion conductivity, and thus, when the silicon-polymer composite is used as an anode active material, the silicon-polymer composite acts as a stable solid electrolyte interphase layer between silicon and an electrolyte, while still maintaining the high specific power and high Coulombic efficiency of silicon which is the main anode active material. Accordingly, degradation in battery performance and battery lifespan may be suppressed.
Resumen de: EP4644322A1
The present invention relates to a silicon-carbon composite having a yolk-shell structure, a manufacturing method therefor, and a negative electrode active material comprising same. The silicon-carbon composite having a yolk-shell structure according to an embodiment of the present invention may be manufactured without an etching process using a strong acid and may have uniform voids formed therein by using a polymer layer having a uniform thickness as a sacrificial layer. Accordingly, the silicon-carbon composite, when used as a negative electrode active material, may accommodate the volume expansion of silicon and thus may suppress the phenomenon in which the outermost carbon thin film is peeled off. As a result, the degradation of battery performance and life span may be suppressed.
Resumen de: EP4645460A1
Examples of the disclosure include a positive electrode active material for a rechargeable lithium battery, a positive electrode including the positive electrode active material, and a rechargeable lithium battery including the positive electrode active material. Examples of the disclosure include a positive electrode active material including a first particle containing a compound having a first average particle diameter, and a second particle containing a compound having a second average particle diameter larger than the first average particle diameter.
Resumen de: EP4645562A1
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.
Resumen de: EP4645419A1
The present application provides an electrode sheet, a battery, and an electrical device. The electrode sheet comprises a current collector, an undercoat layer, and an active layer, and the undercoat layer is located between the current collector and the active layer, the undercoat layer comprises a conductive agent, the active layer comprises an active material and a first electrolyte absorption material, and the electrolyte absorption rate of the first electrolyte absorption material is greater than or equal to 110%.
Resumen de: EP4645539A1
The present disclosure provides a top cover assembly (100) and a battery (10). The top cover assembly (100) includes a cover plate (110) and a pole (120). The cover plate (110) includes a first surface (111) and a second surface (112). Afirst through hole (113) is provided on the cover plate (110) and penetrates from the first surface (111) to the second surface (112). The pole (120) passes through the first through hole (113). The pole (120) includes a first connecting part (121) inserted in the first through hole (113). An orthographic projection of the first connecting part (121) in a direction from the second surface (112) toward the first surface (111) forms a first profile. The first profile has a first maximum length L 1 in the first direction (X) and a first maximum width L2 in a second direction (Y), where 2 ≤ L1/L2 ≤ 3.
Resumen de: EP4644321A1
According to an embodiment of the present invention, the present invention can provide carbon-silicon composite particles, each comprising: a porous carbon support comprising a surface layer part and a core part; and silicon (Si), wherein the porous carbon support comprises mesopores having a diameter of 2-50 nm, and the ratio of the volume of the mesopores of the surface layer part to the volume of the total mesopores of the porous carbon support is 0.5-0.76.
Resumen de: EP4644320A1
The present invention can provide a method for manufacturing a porous carbon support, the method comprising the steps of: (1) subjecting a petroleum-based raw material to pyrolysis and polycondensation to form pitch; (2) solidifying and pelletizing the pitch to obtain solid pitch pellets; (3) stabilizing the solid pitch pellets without pulverization; and (4) carbonizing the stabilized pitch pellets to obtain a carbonized product.
Resumen de: EP4645523A1
The present invention relates to a method of recycling a cathode active material and a recycled cathode active material prepared using the same. The method according to the present invention includes step (i) of heat-treating a waste cathode in which a cathode active material layer is formed on a current collector to thermally decompose a binder and conductive material in the cathode active material layer, separate the current collector from the cathode active material layer, and recover a cathode active material in the cathode active material layer; and step (ii) including step (ii-1) of adding calcium or a calcium compound to the recovered cathode active material and performing reheating treatment at 600 to 750 °C; or step (ii-2) of pre-washing the recovered cathode active material with a washing solution, adding a lithium precursor and calcium or a calcium compound thereto, and performing annealing.According to the present invention, by adding calcium or a calcium compound to the cathode active material recovered after heat treatment, and performing reheating treatment, the present invention has an effect of providing a method of recycling a cathode active material and a recycled cathode active material having excellent efficiency lifespan characteristics, and resistance characteristics prepared the same.
Resumen de: EP4645494A1
An electrolyte for a lithium secondary battery according to the present disclosure includes a lithium salt, an organic solvent, and an additive including a compound which includes a nitrogen-containing heterocycle and an alkyl sulfonyl group bonded to a nitrogen atom of the nitrogen-containing heterocycle. A lithium secondary battery according to the present disclosure includes the electrolyte.
Resumen de: EP4645440A1
An anode for a lithium secondary battery according to exemplary embodiments includes: an anode current collector; a first anode active material layer formed on at least one surface of the anode current collector and including a first anode active material and a first binder; and a second anode active material layer formed on at least one surface of the first anode active material layer and including a second anode active material, a second binder and a cross-linker, wherein the first anode active material layer does not include a cross-linker or includes the cross-linker in a content smaller than that in the second anode active material layer based on weight. Accordingly, the adhesive strength, flexibility, brittleness, and rigidity of the anode are enhanced, and the cycle life characteristics of the lithium secondary battery are improved.
Resumen de: EP4645490A1
A battery cell according to the present disclosure may include: an electrode assembly including a first electrode, a second electrode and a separator; a case accommodating the electrode assembly and electrically connected to the first electrode; a cap plate connected to the case; a terminal member provided on the cap plate; and a pin member disposed on a core of the electrode assembly and electrically connected to the second electrode and the terminal member.
Resumen de: EP4644004A2
A fluid sprayer includes a battery supported by a stand of the sprayer and that is configured to provide electric power to a motor of the sprayer to cause pumping by a pump of the sprayer. The battery is mounted vertically below the sprayer body. The battery is bracketed by vertical portions of the stand.
Resumen de: EP4645572A2
A polyolefin porous film is provided having:a basis weight-converted puncture strength of 50 gf/(g/m<sup>2</sup>) or more;a difference of 15 sec/100 cm<sup>3</sup> or less between a maximum value and a minimum value of an air permeability measured at a total of three spots along the width direction (TD), which spots consist of two spots at 10% of a full width from the respective ends inward to the center and one central spot; anda pressurized-state air permeability of 140 sec/100 cm<sup>3</sup> or less at 30°C in a pressurized state of 3 MPa.
Resumen de: EP4645643A1
An energy storage system includes: a plurality of battery modules connected in series, where each battery module includes at least two cell modules and a first cell monitoring unit, and, in each battery module, adjacent cell modules are electrically connected by a busbar, and the busbar is electrically connected to one first cell monitoring unit; a controller, communicatively connected to the first cell monitoring unit; and a shunt resistor, disposed on a main circuit of the energy storage system. The shunt resistor is electrically connected to the controller.
Resumen de: EP4645439A1
A silicon-carbon composite material includes a porous carbon skeleton and pores of the porous carbon skeleton contain a silicon material. The porous carbon skeleton satisfies: 1.5 < (c - a)/b < 5.0, where a represents a pore diameter corresponding to a cumulative pore volume percentage accounting for 10% of a total pore volume, b represents a pore diameter corresponding to a cumulative pore volume percentage accounting for 50% of the total pore volume, and c represents a pore diameter corresponding to a cumulative pore volume percentage 99% in the total pore volume. The technical solution of this application improves the cycle performance and high-temperature performance of the secondary battery while achieving a high energy density of the secondary battery.
Resumen de: EP4645570A1
A disclosed power storage device includes an electrode group that includes a positive electrode (10), a negative electrode (20), and a separator (30). In the electrode group, the positive electrode (10), the negative electrode (20), and the separator (30) are stacked in a stacking direction such that the separator (30) is between the positive electrode (10) and the negative electrode (20). The positive electrode (10) includes a positive electrode current collector (11) and a positive electrode active material layer (12). The negative electrode (20) includes a negative electrode current collector (21) and a negative electrode active material layer (22). The separator (30) includes a protruding portion (30x) protruding outward past the positive electrode active material layer (12) and the negative electrode active material layer (22). The separator (30) includes a substrate (31) and a ridge portion (32) formed on the substrate (31). The ridge portion (32) is formed like a ridge along at least a part of an edge of the protruding portion (30x).
Resumen de: EP4645560A1
The present invention provides a partitioning member that partitions single cells in a battery assembly so as to readily suppress the generation of condensed water inside the battery assembly.A partitioning member 1 is configured by accommodating an encapsulating material 110 in a casing material 120. The encapsulating material 110 is formed by including a porous body, and the casing material 120 has a moisture permeability set to 1.0 × 10<sup>-3</sup> to 5.0 × 10<sup>1</sup> g/m<sup>2</sup>/day in an environment of 40°C and 90% RH.
Resumen de: EP4645530A1
To provide a heat transfer suppression sheet capable of suppressing excessive swelling outward of an end surface parallel to a thickness direction of an elastic sheet even in a case where the elastic sheet is pressed in the thickness direction, and capable of suppressing a decrease in heat insulation property due to a reduction in thickness. A heat transfer suppression sheet (10) includes an elastic sheet (11) having a pair of main surfaces (11a) orthogonal to a thickness direction and an end surface (11b) substantially parallel to the thickness direction, and a swelling suppression sheet (12) continuously disposed along at least the end surface (11b). The swelling suppression sheet (12) preferably has a tensile strength of 20 MPa or more and 150 MPa or less.
Resumen de: EP4645445A1
Provided are a slurry for forming an electrode of a non-aqueous electrolytic solution secondary battery, containing an electrode active material, a conductive auxiliary agent, and a dispersion medium, and satisfying the following expressions (1) to (4); a non-aqueous electrolytic solution secondary battery using the slurry; and a manufacturing method thereof. 0
Resumen de: EP4645428A1
A positive electrode active material comprises first particles comprising a compound having an olivine structure, and second particles comprising a compound having a spinel structure. The amount of the first particles is greater than the amount of the second particles. Also disclosed are positive electrodes including the positive electrode active materials, and rechargeable lithum batteries including the positive electrodes.
Resumen de: EP4645406A1
A negative electrode for a rechargeable lithium battery and a rechargeable lithium battery including the negative electrode are provided. The negative electrode includes a dry negative active material layer including a negative active material and a polytetrafluoroethylene binder that includes a N-including protection layer.
Nº publicación: EP4645458A1 05/11/2025
Solicitante:
SAMSUNG SDI CO LTD [KR]
SAMSUNG SDI CO., LTD
Resumen de: EP4645458A1
A positive electrode for a rechargeable lithium battery includes a current collector, a first active material layer on the current collector, with the first active material layer including first particles, second particles, a first binder, and a first conductive material. The positive electrode also includes a second active material layer on the first active material layer, the second active material layer including third particles, a second binder, and a second conductive material. The first particles are an olivine structured compound, the second particles are a layered compound, the third particles are an olivine structured compound. The first particles include a plurality of first primary particles aggregated together, the first particles have an average diameter of about 3 µm to about 10 µm, and the first primary particles have an average diameter of about 200 nm or less. The third particles are single particles, and the third particles have an average particle diameter of about 100 nm to about 2 µm.
BOPI
Sede Electrónica
