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1111
resultados
Última actualización
25/01/2026 [07:40:00]
Resultados 300 a 325 de 1111
Resumen de: US20260024823A1
A secondary battery includes an electrode assembly and an electrolyte, where the electrode assembly includes a positive electrode plate, and a separator; the positive electrode plate includes a positive electrode active material layer; the positive electrode active material layer includes a positive electrode active material; the positive electrode active material includes a transition metal element; the transition metal element includes at least one of Co, Ni, Mn, Fe, or V; and the separator includes a base film, where a thickness of the base film is D μm, and 3≤D≤7. The secondary battery includes an electrolyte nitrile-containing additive and a positive electrode nitrile-containing additive, where based on a mass of the electrolyte, a mass percentage of the electrolyte nitrile-containing additive is x %, and based on a mass of the positive electrode active material layer, a mass percentage of the positive electrode nitrile-containing additive is y %; where x+y=z, 0.3≤z≤3.3, 0≤x≤2.3, and 0
Resumen de: US20260024762A1
A negative electrode plate, a secondary battery, and an electric apparatus. The negative electrode plate includes a current collector and a negative electrode film layer disposed on at least one side of the current collector, where the negative electrode film layer includes one or more active material layers, a negative electrode active material in the negative electrode film layer includes a first graphite negative electrode active material, a BET specific surface area of the first graphite negative electrode active material is denoted as A, and a BET specific surface area of the negative electrode active material in the negative electrode film layer is denoted as B, where A≤B, or a BET specific surface area of a material forming the negative electrode film layer is denoted as B′, where A
Resumen de: US20260024820A1
A separator and a preparation method therefor, an electrode assembly, a secondary battery, a battery module, a battery pack and an electrical apparatus are disclosed. The separator comprises: a first microporous base membrane, a second microporous base membrane, and a coating disposed between the first microporous base membrane and the second microporous base membrane, wherein the coating comprises lithium-rich particles, and the ratio of the average particle size Dv50 of the lithium-rich particles to the thickness of the coating is 1:(1-15).
Resumen de: US20260024770A1
The present invention provides an electrode binder capable of improving toughness of a binder coating film, and cycle characteristics of a secondary battery including a secondary battery negative electrode containing a silicon-based active material. The present invention also provides a composition for a secondary battery negative electrode mixture layer containing the binder, and a secondary battery negative electrode and a secondary battery obtained using the composition. An electrode binder for a secondary battery including a secondary battery negative electrode containing a silicon-based active material, the binder including a carboxyl group-containing polymer or a salt thereof (hereinafter, referred to as “polymer (A)”) and a hydroxyl group-containing polymer (different from the polymer (A), hereinafter, referred to as “polymer (B)”) optionally having a carboxyl group or a salt thereof.
Resumen de: US20260024819A1
The all-solid-state battery includes an electrode stacked body that is accommodated in a battery container having a recessed container and a sealing body and has a positive electrode, a negative electrode, and a solid electrolyte layer. The positive electrode and the negative electrode each have a mixture layer and a sheet-like porous metal substrate disposed on a surface of the mixture layer. At least a portion of the porous metal substrate, including an end on the mixture layer side, is embedded in a surface layer of the mixture layer, and the other end of the porous metal substrate is exposed on a surface of the positive electrode or the negative electrode. An elastic conductive member is disposed between the electrode stacked body and an inner bottom face of the sealing body. The elastic conductive member presses the electrode stacked body toward an inner bottom face of the recessed container.
Resumen de: US20260024816A1
An electrochemical apparatus includes a positive electrode, the positive electrode includes a positive electrode active material, and the positive electrode active material contains metal elements Co and Mn, where based on a total mass of the positive electrode active material, a mass percentage of Mn is B %; and an electrolyte, the electrolyte includes a boron-containing lithium salt, where based on a total mass of the electrolyte, a mass percentage of the boron-containing lithium salt is C %; where 0.05≤C≤1, and 0.01≤C/10B≤2.
Resumen de: US20260024811A1
The present disclosure relates to a non-aqueous electrolyte and a lithium-ion battery. The non- aqueous electrolyte according to the present invention includes a lithium salt, an organic solvant and additives. The percentage by weight of the additives in the non-aqueous electrolyte is 0001% to 10%, the additives include 1,3,6-hexanetricarbonitrile and vinylene carbonate, and the weight ratio of 1,3,6-hexanetricarbonitrile to vinylene carbonate is 1:4 to 19. Under the synergistic effect of 1,3,6-hexanetricarbonitrile and vinylene carbonate, the lithium-ion battery prepared with the non-aqueous electrolyte has better cycle performance and heat resistance.
Resumen de: US20260024754A1
Provided is a slurry composition for a non-aqueous secondary battery positive electrode that has excellent dispersibility and that can cause a positive electrode mixed material layer to display excellent adhesiveness and water shedding ability. The slurry composition for a non-aqueous secondary battery positive electrode contains carbon coating layer-covered olivine-type lithium iron phosphate particles in which surfaces of olivine-type lithium iron phosphate particles are at least partially covered by a carbon coating layer and a polymer X including an acidic group-containing monomer unit in a proportion of not less than 3 mass % and not more than 40 mass %. Surfaces of the carbon coating layer-covered olivine-type lithium iron phosphate particles have a weak acid group content of not less than 5 μmol/g and not more than 15 μmol/g.
Resumen de: US20260024752A1
Provided is a cathode active material for a rechargeable alkali metal battery, wherein the cathode active material comprises a sodium salt composite comprising a mixture or composite of Fe and at least a sodium salt selected from NaxA, wherein x is from 1 to 3, and the anion Ax− is selected from F−, Cl−, Br−, I−1, PO43−, SO42−, CO32−, SiO32−, NO3−, B4O72−, or a combination thereof, wherein a molar ratio of Fe-to-sodium salt is from 1/9 to 9/1. Also provided is a rechargeable alkali metal battery comprising this cathode active material, which is a sodium battery (sodium-ion or sodium metal battery), a lithium battery (lithium-ion or lithium metal battery), or a potassium battery (potassium-ion or potassium metal battery).
Resumen de: US20260024813A1
The present invention relates to an electrolyte additive, a battery electrolyte including the electrolyte additive, and a secondary battery, and more particularly, to an electrolyte additive including a compound represented by Chemical Formula 1, an electrolyte including the electrolyte additive, and a secondary battery including the electrolyte. According to the present invention, due to low charging resistance, charging efficiency and output may be improved. In addition, the present invention has an effect of providing a secondary battery having a long lifespan and excellent capacity retention at high temperature.
Resumen de: US20260024810A1
An additive for a non-aqueous electrolytic solution includes a cyclic sulfone compound represented by Formula (1):X1 represents a sulfonyl group and Z represents a monovalent group represented by Formula (21), (22), (23), or (24):
Resumen de: US20260024749A1
A secondary battery includes an electrode assembly. The electrode assembly includes a positive electrode plate, a negative electrode plate, and a separator. The separator is disposed between the positive electrode plate and the negative electrode plate. The negative electrode plate includes a negative electrode current collector and a negative electrode active material layer. A surface of the negative electrode active material layer facing towards the positive electrode plate has grooves, a width of the groove is W mm, and a spacing of the grooves is S mm. A thickness of the electrode assembly is T1 mm, satisfying: W≥S×T1/1000.
Resumen de: US20260024774A1
Provided is a binder for a secondary battery functional layer that can form a functional layer having excellent heat shrinkage resistance, adhesiveness, and preservation stability. The binder for a secondary battery functional layer contains a particulate polymer including an acidic functional group-containing monomer unit and a reactive functional group-containing monomer unit including a functional group that can react with an acidic functional group. The proportional content of the reactive functional group-containing monomer unit is not less than 7 mass % and not more than 30 mass % when all monomer units included in the particulate polymer are taken to be 100 mass %. A film that is formed of the particulate polymer after accelerated testing has an elastic modulus of 10 MPa or less.
Resumen de: US20260024806A1
The present disclosure provides a solid electrolyte composition that can suppress deterioration in ion conductivity of an ionic solid electrolyte material. The solid electrolyte composition according to the present disclosure contains a sulfur element-free ionic solid electrolyte material and an organic solvent, where the organic solvent includes at least one selected from the group consisting of a hydrocarbon and a compound having a functional group; and the functional group is at least one selected from the group consisting of an ether group, a halogen group, and a Si—O—C group.
Resumen de: US20260024748A1
A negative electrode composition, a negative electrode including the same, and a lithium secondary battery including the negative electrode are provided. The negative electrode composition comprises a porosity securing material and a linear conductive material, and thereby maximizing diffusion of lithium ions while maintaining porosity of the negative electrode, securing conductivity, and lowering resistance of the negative electrode.
Resumen de: US20260024809A1
Embodiments described herein are directed to an electrolyte solution and a lithium-ion secondary battery. The electrolyte solution includes an organic solvent, an electrolyte salt and an additive, wherein the additive includes pyridine boron trifluoride, fluoroethylene carbonate and 1,3,6-hexanetricarbonitrile. The mass percentage content of the pyridine boron trifluoride in the electrolyte solution is 0.1-5%; the mass percentage content of the fluoroethylene carbonate in the electrolyte solution is 0.1-8%; and the mass percentage content of the 1,3,6-hexanetricarbonitrile in the electrolyte solution is 0.1-5%. By means of the synergistic effect of the different types of additives mentioned above, the high-temperature performance and the normal-temperature performance of a high-voltage lithium-ion battery are improved; moreover, the use of sulfur-containing substances can be reduced or even avoided.
Resumen de: US20260024812A1
Electrolytes and rechargeable lithium batteries are disclosed. The electrolyte includes a non-aqueous organic solvent, a lithium salt, a first additive represented by Chemical Formula 1, and a second additive represented by Chemical Formula 2.
Resumen de: US20260024808A1
The present disclosure relates to a polymer solid electrolyte and a preparation method thereof. The polymer solid electrolyte includes a polymer including a cross-linkable functional group; a lithium salt; and a solvent including a first solvent and a second solvent, wherein the polymer solid electrolyte having a cross-linked structure and an amorphous polymer chain including the cross-linkable functional group, and wherein the cross-linked structure includes (a) a cross-linkage between cross-linkable functional groups, (b) a cross-linkage between the cross-linkable functional group and the first solvent, and (c) a linkage between the cross-linkable functional group and the lithium salt.
Resumen de: US20260024805A1
A solid-state battery includes an electrode laminate body in which a positive electrode active material layer, a solid electrolyte layer, and a negative electrode active material layer are laminated in this order, in which: each of the positive electrode active material layer, the solid electrolyte layer, and the negative electrode active material layer contains a sulfide solid electrolyte; a surface moisture amount of the electrode laminate body is 200 ppm to 1500 ppm; and the ratio of the surface moisture amount to a whole moisture amount in the whole of the electrode laminate body is 0.50 to 1.00.
Resumen de: US20260024768A1
A solid-state battery including: a negative electrode layer including: a negative electrode active material including a Li composite oxide; and an oxide glass-based solid electrolyte, in which a content percentage of the solid electrolyte is 20% by mass to 60% by mass based on a total amount of the negative electrode active material and the solid electrolyte in the negative electrode layer, and a ratio (B/A) of an actual density B of the negative electrode active material to a true density A of the negative electrode active material is 0.3 to 0.6.
Resumen de: US20260024807A1
An all-inorganic electrolyte formulation for use in a lithium-ion battery system comprising at least one of each a phosphoranimine, a phosphazene, a monomeric organophosphate and a supporting lithium salt. The electrolyte preferably has a melting point below 0° C., and a vapor pressure of combustible components at 60.6° C. sufficiently low to not produce a combustible mixture in air, e.g., less than 40 mmHg at 30° C. The phosphoranimine, phosphazene, and monomeric phosphorus compound preferably do not have any direct halogen-phosphorus bonds. A solid electrolyte interface layer formed by the electrolyte with an electrode is preferably thermally stable ≥80° C.
Resumen de: US20260024802A1
The present application relates to a lithium secondary battery, including a positive electrode, a silicon-based negative electrode, a separator provided between the positive electrode and the negative electrode, and an electrolyte. The initial efficiency between the positive electrode and the negative electrode and the differences in area, full width, and full length between the positive electrode and the negative electrode can be adjusted to provide cycle improvement in the performance of the lithium secondary battery.
Resumen de: US20260024751A1
The invention relates to a method for producing a silicon electrode as an anode for a lithium ion battery, in which an active layer is deposited on a substrate, preferably copper, and then undergoes a rapid tempering, as well as an anode produced using same. The object of the invention of providing a method, which dispenses with the need for a vacuum section for depositing the active material, in particular silicon, for the production of anodes for lithium ion batteries, and thereby allows for an extremely cost-optimised production of almost pure silicon anodes for lithium ion batteries, is achieved in that the active layer is formed from a silicon and metal particle mixture, which is applied to the substrate in a dry process and stabilised in a controlled manner via the rapid tempering to form a semi-porous active layer and fixed to the substrate.
Resumen de: US20260024801A1
A negative active material for a rechargeable lithium battery includes a core including a SiO2 matrix and a Si grain, and a coating layer continuously or discontinuously coated on the core. The coating layer includes SiC and C, and the peak area ratio of the SiC (111) plane to the Si (111) plane as measured by X-ray diffraction analysis (XRD) using a CuKα ray ranges from about 0.01 to about 0.5.
Nº publicación: US20260024804A1 22/01/2026
Solicitante:
CONTEMPORARY AMPEREX TECH CO LIMITED [CN]
CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Resumen de: US20260024804A1
A secondary battery, an electrolyte, and an electric apparatus. The secondary battery includes a positive electrode plate, an electrolyte, a separator, and a negative electrode current collector, where the electrolyte includes a non-aqueous solvent, an electrolytic salt, and an additive; the non-aqueous solvent includes an ether organic solvent; the additive includes a first additive; and the first additive includes one or more of a phosphite additive or a borate additive.
BOPI
Sede Electrónica
