Resumen de: EP4657586A1
The present application provides a composite separator and an application thereof. The composite separator includes a separator substrate and an electrolyte layer provided on at least one surface of the separator substrate. The electrolyte layer at least comprises inorganic nanotubes and solid electrolyte particles. A volume fraction of through-pores of the inorganic nanotubes in the electrolyte layer is 0.2%-5%. The composite separator not only has excellent heat resistance and electrolyte solution wettability, but also has excellent lithium-ion transport performance when applied to a battery, thereby reducing the internal resistance of the lithium-ion battery and improving the rate performance and cycle performance of the lithium-ion battery.
Resumen de: EP4657540A1
Disclosed are a dry electrode film, a preparation method therefor, and an electrode and a battery, which belong to the technical field of batteries. The method in the present application includes: mixing polytetrafluoroethylene, an active material, and a conductive agent, and pulverizing to obtain a pulverized mixed material; subjecting the pulverized mixed material to a primary jet milling shear to obtain a milled-sheared mixed material; wherein a condition of the primary shear includes: a gas stream temperature of -10°C-10°C, a gas stream pressure of 0.7-0.9 MPa, and a rotational speed of 8000-12000 rpm; subjecting the milled-sheared mixed material to a secondary jet milling shear and fibrillation to obtain a fibrillized material; and subjecting the fibrillized material to a secondary fibrillation treatment to obtain the dry electrode film. The method in the present application can significantly improve the tensile strength of the electrode film, increase the liquid absorption rate of the electrode, and reduce the electrical resistivity of the electrode.
Resumen de: EP4657605A1
The present invention relates to a method of recycling a cathode active material and a cathode active material recycled using the same. According to the present invention, during the recycling process, a single crystal structure is synthesized and, at the same time, trivalent iron is converted into divalent iron, so that no trivalent iron remains inside the recycled cathode active material, Accordingly, deterioration of battery performance may be prevented, lifespan characteristics may be excellent in a high-voltage environment, thermal stability may be increased, and the amount of gas generated during charging and discharging may be reduced.
Resumen de: EP4657595A1
A cell includes at least one cell core. Each of the at least one cell core includes a positive-electrode sheet, a positive-electrode tab, a negative-electrode sheet, and a negative-electrode tab; the positive-electrode tab is arranged on the positive-electrode sheet; the positive-electrode tab extends away from the positive-electrode sheet; a length of the positive-electrode tab in a direction perpendicular to an extension direction of the positive-electrode tab is L1; the negative-electrode tab is arranged on the negative-electrode sheet; the negative-electrode tab extends away from the negative-electrode sheet, a length of the negative-electrode tab in a direction perpendicular to an extension direction of the negative-electrode tab is L2, where L1/L2=n, and the n is in a range of 1.2≤n≤2.
Resumen de: EP4657598A1
Method and system for at least partially desulfating at least one lead-acid battery, wherein a series of current pulses formed by positive current pulses alternating with negative current pulses are applied to the at least one battery. The alternating positive and negative current pulses are applied to the at least one lead-acid battery with a separating time between consecutives pulses that is below a predefined time.
Resumen de: EP4657562A1
A secondary battery includes a positive electrode, a negative electrode, and an electrolyte solution. The positive electrode includes a positive current collector and a positive electrode material layer. The positive electrode material layer includes a first material layer and a second material layer. The second material layer is disposed between the positive current collector and the first material layer. The first material layer includes a nickel-cobalt-manganese ternary material. The nickel-cobalt-manganese ternary material includes a first element. The first element includes magnesium and aluminum. The second material layer includes an inorganic additive. The inorganic additive includes a second element. The second element includes at least one of titanium, chromium, yttrium, zirconium, lanthanum, niobium, indium, tin, zinc, or antimony. The electrolyte solution includes a dinitrile compound. The secondary battery exhibits a good capacity retention rate and a relatively small amount of residual gas.
Resumen de: EP4657561A2
An electrochemical device includes a positive electrode plate. The positive electrode plate includes a positive active material layer. The positive active material layer includes a positive active material. After the electrochemical device is discharged, a molar fraction of an M1 element in the positive active material included in the positive electrode plate in a fully discharged state is a. The M1 element includes Ni, Co, and Mn. A molar fraction of Ni in the positive active material is b. A molar fraction of Mn in the positive active material is c. A molar fraction of an M2 element in the positive active material is d. The M2 element includes at least one of Na, K, or Mg. The value of b/a is 0.4 to 0.6, the value of c/a is 0.4 to 0.6, and the value of d/a is 0.04 to 0.06.
Resumen de: EP4657617A2
A secondary battery according to various embodiments of the present disclosure includes a battery can configured to accommodate an electrode assembly through an open end; a cap plate coupled to the open end; and a sealing gasket interposed between the battery can and the cap plate, wherein the cap plate includes a flat part and a raised part protruding from the flat part toward at least one axial direction of the battery can.
Resumen de: EP4657603A1
A power storage device (100) includes a plurality of power storage cells (10), a housing (30), a smoke exhaust sensor (50), and a detection space formation member (40) that forms a detection space (S2) in which gas is detected by the smoke exhaust sensor (50). The housing (30) includes a lower case (31), and a share panel (33) that forms a smoke exhaust space (S1) between a bottom plate (31c) of the lower case (31) and the share panel (33). The detection space formation member (40) is provided to form a detection space (S2) between the bottom plate (31c) and the plurality of power storage cells (10) and to cause the detection space (S2) to be separated from the smoke exhaust space (S1).
Resumen de: EP4657544A1
A positive electrode active material for a rechargeable battery includes first particles comprising a first Li compound having a first average particle diameter, and second particles comprising a second Li compound having a second average particle diameter that is smaller than the first average particle diameter, and the content of the first particles is greater than the content of the second particles. Also disclosed are a positive electrode comprising the positive electrode active material, and a rechargeable lithum battery including the positive electrode.
Resumen de: EP4657560A1
The present application relates to: a negative electrode active material comprising a first silicon-based active material and a coating layer provided on the surface of the first silicon-based active material, wherein the coating layer includes a second silicon-based active material, and the grain size of the second silicon-based active material is 20 nm to 200 nm; a method for preparing the negative electrode active material; a negative electrode composition; a negative electrode for a lithium secondary battery, the negative electrode comprising same; and a lithium secondary battery comprising the negative electrode.
Resumen de: EP4657563A1
The present disclosure relates to a positive electrode active material and a recycling method thereof. More specifically, in the positive electrode active material and a recycling method thereof, the positive electrode active material is at least one type selected from a lithium nickel oxide (LNO)-based positive electrode active material, a nickel·cobalt·manganese (NCM)-based positive electrode active material, a nickel·cobalt·aluminum (NCA)-based positive electrode active material and a nickel·cobalt·manganese·aluminum (NCMA)-based positive electrode active material, in which single particles are included, a content of F is 5,700 mg/kg to 6,500 mg/kg, and/or an a-axis lattice parameter measured by an XRD analysis is 2.8753 Å to 2.8772 Å, a c-axis lattice parameter is 14.243 Å to 14.255 Å, a cell volume is 101.968 Å<sup>3</sup> to 102.168 Å<sup>3</sup> and a crystallite size is greater than 130 nm and equal to or less than 136 nm.
Resumen de: GB2641438A
A system and method may include a battery, at least one component electrically coupled to and powered from the battery, a coil located proximate to the battery such that a temperature of the coil is indicative of a temperature of the battery, a coil resistance and battery temperature reporting system electrically coupled to the coil and configured to monitor a direct current resistance of the coil and estimate a temperature of the coil based on the direct current resistance, and a power management system communicatively coupled to the coil resistance and battery temperature reporting system, the battery, and the at least one component and configured to control power delivered and consumed by the battery and the at least one component based on the temperature of the coil.
Resumen de: EP4657634A1
The present disclosure discloses a battery module configured to improve safety when a thermal event occurs inside the battery module. A battery module according to one aspect of the present disclosure includes a cell assembly including a plurality of battery cells electrically connected to each other through an electrode lead; a module case accommodating the cell assembly in an internal space; and a cover member adhered to a side portion of the cell assembly in which the electrode lead protrudes in the internal space of the module case.
Resumen de: EP4657587A1
Provided is an electrolyte solution for a rechargeable lithium battery and a rechargeable lithium battery including the same, and the electrolyte solution includes a non-aqueous organic solvent, a lithium salt, and an additive represented by Formula 1 previously described.
Resumen de: EP4657642A1
An organic/inorganic composite separator includes a porous substrate having a plurality of pores; and a porous coating layer formed on at least one surface of the porous substrate with a plurality of inorganic particles and a binder polymer. The binder polymer is a copolymer including: (a) a first monomer unit having a contact angle to a water drop in the range from 0° to 49°; and (b) a second monomer unit having a contact angle to a water drop in the range from 50° to 130°. This organic/inorganic composite separator has excellent thermal stability, so it may restrain an electric short circuit between a cathode and an anode. In addition, the separator may prevent inorganic particles in the porous coating layer from being extracted during an assembling process of an electrochemical device, thereby improving stability of an electrochemical device.
Resumen de: EP4657572A1
The disclosure provides a composition for an electrochemical device binder capable of improving the initial capacity and capacity retention of the electrochemical device, and an electrochemical device binder, an electrode mixture, an electrode, and a secondary battery each containing the composition. Provided is a composition for use in an electrochemical device binder, the composition containing a fibrillatable resin and at least one lithium/sodium compound selected from the group consisting of a lithium/sodium salt and a lithium/sodium replenisher, the composition containing the fibrillatable resin in an amount of 20% by mass or more, the composition containing the fibrillatable resin and the lithium/sodium compound in a total amount of 40% by mass or more.
Resumen de: GB2641431A
A cathode of a zinc bromine static battery (ZBSB) apparatus, comprising 80-90 % by weight quaternary ammonium salt fused with activated carbon to form a salt-fused activated carbon component, 5-12 wt% of super P carbon, and 1-5 wt% of a binder. A ZBSB apparatus 100 comprising a first cell 102A comprising a first cathode 108A in contact with a first cathode current collector 110A, and a second cell 102B comprising a second cathode 108B in contact with a second cathode current collector 110B, wherein each cathode comprises 80-90 % by weight quaternary ammonium salt fused with activated carbon to form a salt-fused activated carbon component, 5-12 wt% of super P carbon, and 1-5 wt% of a binder. A method (Fig. 5, 500) of preparing a cathode of a ZBSB apparatus, comprising drying activated carbon and a quaternary ammonium salt to remove moisture, preparing an aqueous solution by dispersing 30-70 wt% of the salt and 40-70 wt% of the activated carbon in water, mixing 80-90 wt% of the salt-fused activated carbon powder with 5-12 wt% super P carbon and 1-5 wt% of a binder to form a mixture, and forming the mixture into a sheet to obtain the cathode.
Resumen de: EP4657592A1
An electrochemical device includes a negative electrode plate and an electrolyte solution. The negative electrode plate includes a negative electrode material layer. The negative electrode material layer includes a silicon-carbon negative electrode material. The silicon-carbon negative electrode material includes a dopant element. The dopant element includes at least one of elements B, P, or S. The electrolyte solution includes a compound represented by Formula I and fluoroethylene carbonate.
Resumen de: EP4657574A2
The present disclosure relates to an electrode for a rechargeable lithium battery and a rechargeable lithium battery including the electrode. The electrode for a rechargeable lithium battery includes a current collector, and an active material layer on the current collector. The current collector includes a base having a surface on which an irregular pattern is formed and a carbon material- and binder-containing layer laminated on the surface. The active material layer is on the carbon material- and binder-containing layer.
Resumen de: EP4657567A1
An electrochemical device includes a positive electrode plate. The positive electrode plate includes a positive active material layer. The positive active material layer includes a positive active material. The positive active material contains three elements Li, Ni, and Mn. A molar fraction of Li in the positive active material is a, a molar fraction of Ni in the positive active material is b, a molar fraction of Mn in the positive active material is c, a value of b/a is 0.4 to 0.6, and a value of b/c is 0.8 to 1.2.
Resumen de: EP4657601A1
Disclosed are a pouch-shaped secondary battery pressing jig including a first pressing unit including a first pressing plate configured to seat a second surface of a pouch-shaped secondary battery thereon, a second pressing unit including a second pressing plate having an air hole configured to allow a fifth surface and a sixth surface to communicate with each other, the second pressing unit being configured to press a first surface of the pouch-shaped secondary battery, and an air injection unit configured to inject air to the first surface of the pouch-shaped secondary battery through the air hole and a pouch-shaped secondary battery inspection method using the same.
Resumen de: EP4657570A2
A cathode for a lithium secondary battery according to embodiments of the present disclosure includes a cathode current collector and a cathode active material layer. The cathode active material layer is disposed on at least one surface of the cathode current collector. The cathode active material layer includes a cathode active material, a solid electrolyte and carbon nanotubes. The carbon nanotubes have a specific surface area of 100 m<sup>2</sup>/g to 300 m<sup>2</sup>/g. The content of the carbon nanotubes is more than 0.25 wt% and less than 1.5 wt% based on the total weight of the cathode active material layer.
Resumen de: EP4657616A1
A columnar secondary battery includes a housing, a first sealing element, and a second sealing element. The housing includes a bottom wall. The bottom wall is provided with a first through-hole. The first sealing element is disposed on an outer surface of the bottom wall and covers at least a part of the first through-hole. At least a part of the second sealing element is disposed on one side of the first sealing element and covers the first sealing element and the first through-hole, the one side of the first sealing element is facing away from the bottom wall.
Nº publicación: EP4657602A1 03/12/2025
Solicitante:
SAMSUNG SDI CO LTD [KR]
SAMSUNG SDI CO., LTD
Resumen de: EP4657602A1
The present disclosure relates to an electrode, and a technical problem to be solved is to provide an electrode capable of suppressing cracks from occurring in an uncoated portion. The present disclosure provides an electrode including: an electrode plate including a coated portion, which is a region in which an active material layer is applied on a substrate, and an uncoated portion, which is a region in which the active material layer is not applied on the substrate; a tab fixed to at least a part of the uncoated portion and protruding from the electrode plate; and a tape adjacent to the tab and attached onto the uncoated portion.