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721
resultados
Última actualización
13/09/2026 [06:56:00]
Resultados 225 a 250 de 721
Resumen de: EP4804213A1
0001 To provide a method for producing a sulfide solid electrolyte having high water resistance, and the like. A method for producing a sulfide solid electrolyte, comprising a step of subjecting a sulfide solid electrolyte to at least one treatment selected from the group consisting of a mixing treatment and a disintegration treatment in a solvent, wherein the solvent comprises an aprotic solvent containing an oxygen atom.
Resumen de: US20250149538A1
A lithium-ion battery includes an electrode with microscale channels formed in the electrode material and a nanoscale conformal coating over the electrode material. The channels promote Li-ion transport to the interior of the electrode during charging, and the coating acts as an artificial solid electrolyte interphase (SEI) in place of the SEI that is typically formed during initial charge cycles of a Li-ion battery. The coating can be selected to have a lower impedance than a naturally formed SEI and can be formed in a more controlled manner prior to cell assembly. Cold-charging performance of the resulting battery is enhanced more than would be expected by the individual contributions of the channels and the coating.
Resumen de: EP4804250A1
Disclosed herein are an all-solid-state secondary battery and a method of manufacturing the same, the all-solid-state secondary battery including: a cathode layer; an anode layer; and a solid electrolyte layer disposed between the cathode layer and the anode layer, wherein the cathode layer includes a cathode current collector and a cathode active material layer disposed on one or both sides of the cathode current collector, the cathode active material layer includes a composite cathode active material, the composite cathode active material includes a composite of M2S, an alkali metal salt, an inorganic electronic conductive structure, and a metal conductive material, where M is an alkali metal, and the alkali metal is Li or Na, an electronic conductivity of the inorganic electronic conductive structure is 1 x 10-3 S/cm or more, the composite includes a solid solution of M2S and an alkali metal salt, and a ratio of length/thickness of the metal conductive material is 2 or more.
Resumen de: EP4804261A1
0001 This secondary battery comprises: a wound electrode body (14) in which a positive electrode and a negative electrode (12) are wound via a separator; and a cylindrical outer can that houses the electrode body (14). A belt-shaped tape (50) for fixing a winding end is adhered to the outer peripheral surface of the electrode body (14). The tape (50) is adhered so that: the tape (50) does not overlap itself in the thickness direction of the tape (50); and both ends (51, 52) of the tape (50) in the length direction overlap each other in the axial direction of the electrode body (14).
Resumen de: EP4804303A1
Provided is a cylindrical nonaqueous electrolyte secondary battery for which corrosion of an opening end of an outer can is suppressed. A cylindrical nonaqueous electrolyte secondary battery as an example embodiment of this invention includes: an outer can having a bottomed cylindrical shape and a groove part at an opening part; a nonaqueous electrolyte and an electrode body housed in the outer can; and a sealing body closing the opening part of the outer can. The electrode body has a winding structure. A tape for fixing a winding end of the electrode body is stuck to an outer peripheral surface of the electrode body. The tape has an extended part that extends out from an end on the groove part side of the outer peripheral surface. The extended part contacts the groove part and absorbs the nonaqueous electrolyte.
Resumen de: EP4804308A1
0001 This hermetically sealed battery includes an electrode body, an exterior can (16), a sealing body, and a gasket (28) interposed between the exterior can and the sealing body. The sealing body is swaged and fixed to the opening-side end of the exterior can via the gasket. The gasket has a cylindrical body part (50) and a protrusion (54) protruding over the entire circumference from the outer peripheral surface of the body part to the outside in the radial direction. The protrusion is elastically bent outward in the axial direction so that the tip approaches the outer peripheral surface of the body part in a state in which the inner peripheral surface of a cylindrical part provided at the opening-side end part of the exterior can is pressed toward the outside in the radial direction.
Resumen de: EP4804326A1
This cylindrical battery comprises: a winding-type electrode body (14); an outer can that has a bottomed cylindrical shape and that accommodates the electrode body (14); and a sealing body that closes the opening of the outer can, wherein a plurality of positive electrode leads connected to a positive electrode (11) of the electrode body (14) are included. The plurality of positive electrode leads include a main lead (20a) and two or more sub leads (20b, 20c). The main lead (20a) is connected to the sealing body, and the sub leads (20b, 20c) are connected to the main lead (20a) at a location away from the connection part between the main lead (20a) and the sealing body.
Resumen de: EP4804273A1
According to the present disclosure, there is provided a sulfide-based solid electrolyte including a Li-P-S-based compound having an anionic lattice structure represented by P1-bMbS4-aSea3-.
Resumen de: EP4804299A1
This cylindrical secondary battery (10) includes an electrode group (14), a current collector which is connected to the electrode group, a sealing body (19) which is disposed on the upper side of the electrode group and to which the current collector is connected, and a bottomed cylindrical battery can (20) which houses the electrode group. The sealing body is fixed to the inside of the opening-side end of the battery can in the axial direction, and closes the opening of the battery can. A cap (40) is attached to the opening-side end of the battery can. The cap has: a cylinder part (41) which has a female screw (43) on the inner peripheral surface; and a pressing plate part (42) that is continuous with one end of the cylinder part and is pressed against the outer side of the opening-side end of the battery can in the axial direction. The battery can has a male screw (53) on the outer peripheral surface. The battery can and the cap are screw-coupled with each other by means of the female screw and the male screw.
Resumen de: WO2025093437A1
Process for coating a cathode active material for lithium-ion batteries wherein said cathode active material comprises at least 50 mol-% nickel, referring to metals other than lithium, wherein said process comprises the steps of: (a) providing a cathode active material according to the general formula Li1+xTM1-xO2 wherein x is in the range of from zero to 0.2, TM is a combination of metals of which at least 95 mol-% are transition metals, and at least 50 mol-% of TM is nickel, and TM contains at least one of cobalt and manganese, (b) combining said cathode active material with an anhydrous solution of Zr(OR1)4, wherein R1 are same or differ- ent and selected from C2-C4-alkyl, straight chain or branched, (c) adding LiOH∙y H2O, wherein y is in the range of from 0.5 to 3.0, (d) removing the solvent(s), (e) treating the residue thermally at a temperature in the range of from 300 to 450°C.
Resumen de: EP4804324A1
A battery (10) comprises: an electrode body (14) in which a belt-like positive electrode (11) and a belt-like negative electrode (12) are wound via a belt-like separator (13); an outer can (16) that accommodates the electrode body (14) and includes a cylindrical part (30); and a sealing body (17) that closes an opening part of the outer can (16). In the axial direction of the electrode body (14), the negative electrode 12 has a first end and a second end. There are: a first current collecting path for electrically connecting the negative electrode (12) and the outer can (16) on the first end side; and a second current collecting path for electrically connecting the negative electrode (12) and the outer can (16) on the second end side.
Resumen de: EP4804210A1
0001 A main object of the present disclosure is to provide a sulfide solid electrolyte capable of inhibiting increase of battery resistance along with charge and discharge cycle.
0002 The present disclosure achieves the object by providing a sulfide solid electrolyte including a Li element, a P element, and a S element, wherein, in a TOF-SIMS analysis, a ratio (C
Resumen de: EP4804322A1
0001 A battery (10) comprises: an electrode body (14) in which a belt-shaped positive electrode (11) and a belt-shaped negative electrode (12) are wound with a belt-shaped separator (13) in between; an outer can (16) that accommodates the electrode body (14) and includes a cylindrical part (30); and a sealing body (17) that closes an opening part of the outer can (16). In the axial direction of the electrode body (14), the negative electrode (12) has a first end and a second end. Power is collected from the negative electrode (12) through the first end side. At the second end, there is formed a second exposed part (shock-absorbing part) (46) where a region on the outer peripheral side of the electrode body (14) protrudes outward in the axial direction more than a region on the inner peripheral side. The second exposed part (46) constitutes a shock-absorbing part.
Resumen de: EP4804246A1
0001 The present invention provides a nonaqueous electrolyte secondary battery which is capable of achieving high output. A nonaqueous electrolyte secondary battery according to one embodiment of the present disclosure includes: a wound electrode body which is obtained by winding a belt-shaped positive electrode and a belt-shaped negative electrode, with a separator being interposed therebetween; and an outer package which houses the electrode body. The positive electrode has a positive electrode current collector and a positive electrode mixture layer that is formed on the surface of the positive electrode current collector. A positive electrode current collector exposed part, in which the positive electrode current collector is exposed, is formed in the surface of the positive electrode. A positive electrode tab is connected to the positive electrode current collector exposed part. The positive electrode mixture layer has a normal part and thick parts that are thicker than the normal part. The thick parts are close to both ends of the positive electrode current collector exposed part in the longitudinal direction of the positive electrode.
Resumen de: WO2025091090A1
Doped layered cathode materials for an electrochemical device are disclosed, which comprises a layered cathode material and a dopant, wherein the dopant is selected and added so that the electrochemical device delivers a capacity retention of about 78% to about 88% after 500 cycles at 1 C.
Resumen de: EP4804241A1
0001 An electrode for secondary batteries includes: an electrode current collector in the form of a sheet, an electrode mixture layer supported on a principal surface of the electrode current collector, and having an end face ME continuous with an end face CE of the electrode current collector; and a protective layer partially covering the end face CE of the electrode current collector from a boundary between the electrode current collector and the electrode mixture layer, in the thickness direction of the electrode current collector.
Resumen de: EP4804240A1
An electrode for secondary batteries includes a sheet-shaped electrode current collector, a first electrode mixture layer supported on one main surface of the electrode current collector; and a second electrode mixture layer supported on another main surface of the electrode current collector. An end portion of the electrode includes end portions of the first electrode mixture layer and the second electrode mixture layer and an end portion of the electrode current collector. The end portions of the first electrode mixture layer and the second electrode mixture layer each protrude beyond the end portion of the electrode current collector.
Resumen de: EP4804316A1
Provided is a composition for an electrochemical device functional layer with which it is possible to form a functional layer for an electrochemical device that has excellent normal temperature adhesiveness and can reduce internal resistance of an electrochemical device. The composition for an electrochemical device functional layer contains a particulate polymer A. The particulate polymer A has a volume-average particle diameter of not less than 0.75 µm and not more than 17.5 µm, an amount of elution into tetrahydrofuran of not less than 0.05 mass% and not more than 60 mass%, and a storage modulus at 25°C of 35 MPa or less.
Resumen de: EP4803558A1
0001 The present invention relates to: a copolymer comprising a sulfur atom-containing monomer unit, an acrylonitrile-based monomer unit, an acrylate-based monomer unit containing a linear C1-20 alkyl group, and a vinyl acetate-based monomer unit; and a slurry composition, a separator, and a secondary battery comprising same.
Resumen de: WO2025093838A1
The present invention relates to a composition comprising a fluorinated polymer P1 comprising monomer units derived from a fluorinated monomer M1a and a copolymer P2 comprising monomer units derived from a monomer M2a of formula (Ia) R1R2C=C(R3)C(O)R or (Ib) R1R2C=C(R3)R'' and monomer units derived from a monomer M2b of formula (II). The composition is used as an electrode binder.
Resumen de: US20250146981A1
0000 A battery cell inspection system and method are disclosed. The system performs an ultrasound interrogation session of a cell by directing ultrasound at different frequencies at target points across surfaces of the cell, detecting ultrasound at the target points that is transmitted through and/or reflected from the cell, generating response signals from the detected ultrasound at each of the target points, and determining characteristics of the cell including defects, anomalies and cell capacity based upon the response signals. During the session, the transducers are not in contact with the surfaces of the cell, and the transducers and the cell are immersed in an electrically non-conductive fluid. The system can also configure the ultrasound transmitted at the target points into focused beams. Alternatively, an inspection system can be configured to determine characteristics of a cell during a formation stage of the cell.
Resumen de: EP4804307A1
0001 This secondary battery comprises: an electrode body that is obtained by winding a positive electrode and a negative electrode with a separator interposed therebetween; a cylindrical outer can (20) that has a bottom part and that houses the electrode body; a sealing body (30) that closes an opening (24) of the outer can (20); and an annular gasket (40) that is interposed between the outer can and the sealing body (30), the sealing body (30) being fixed by crimping to the opening (24) of the outer can (20) with the gasket (40) interposed therebetween. The secondary battery is characterized in that: the gasket includes a first gasket (41) and a second gasket (42) disposed on the bottom side of the first gasket (41); the sealing body (30) is sandwiched between the first gasket (41) and the second gasket (42) from both sides in the axial direction of the outer can (20); and at least a portion of the first gasket (41) is adjacent to the second gasket (42) in the radial direction of the outer can (20).
Resumen de: EP4803658A1
The present invention relates to: a perforated aluminum foil suitably used for a current collector for a power storage device; and a method for manufacturing same. The present invention provides a method for manufacturing a perforated aluminum foil having a plurality of through-holes penetrating in the thickness direction thereof, the method comprising: an alkaline cleaning step for bringing a first aqueous composition containing 1-10 mass percent inclusive of an alkali into contact with the surface of an aluminum foil; and a through-hole forming step for forming the through-hole in the thickness direction of the aluminum foil by bringing a second aqueous composition containing 1-30 mass percent inclusive of halide ions into contact with the surface of the aluminum foil within 20 minutes after the alkaline cleaning step. Also provided is a perforated aluminum foil having a prescribed breaking strength, average pore diameter, and maximum pore diameter/average pore diameter.
Resumen de: EP4803657A1
According to the present invention, it is possible to provide a method for producing an aluminum perforated foil which has a plurality of through holes penetrating therethrough in the thickness direction, the method including a through hole forming step in which an aqueous composition that contains 1-30 mass% of halide ions and 0.1-20 mass% of an oxidizing agent is brought into contact with the surface of an aluminum foil so as to form the through holes in the thickness direction of the aluminum foil.
Nº publicación: EP4804255A1 09/09/2026
Solicitante:
PANASONIC ENERGY CO LTD [JP]
Panasonic Energy Co., Ltd.
Resumen de: EP4804255A1
Disclosed is a negative electrode (12) for secondary batteries, which includes a negative electrode current collector (40) and a negative electrode mixture layer (41) that is formed on the surface of the negative electrode current collector (40). This negative electrode (12) for secondary batteries is characterized in that: the negative electrode mixture layer (41) includes, as a negative electrode active material, a carbon material and an Si-containing material; the negative electrode mixture layer (41) includes, as a conductive agent, a first conductive agent that has a G/D ratio of not less than 20 but less than 65 as determined by Raman spectroscopic measurement, and a second conductive agent that has a G/D ratio of not less than 0.7 but less than 20 as determined by Raman spectroscopic measurement; and the ratio (W2/W1) of the mass (W2) of the second conductive agent to the mass (W1) of the first conductive agent is less than 2.0.
BOPI
Sede Electrónica
