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1509
resultados
Última actualización
17/03/2026 [07:16:00]
Resultados 350 a 375 de 1509
Resumen de: US20260074203A1
A lithium-metal secondary battery, which includes a highly reduction-resistant electrolytic solution, including 2 to 6 mol of electrolyte per L of solvent and also having a lithium deposition dissolution efficiency of 98.5% or more, which lithium deposition dissolution efficiency is the proportion of the amount of redissolution of lithium to the amount thereof deposited on the copper surface, wherein the relative density of a lithium metal layer in a negative electrode is 40 to 85%. In addition, a lithium-metal secondary battery, which includes a highly oxidation-resistant electrolytic solution, including 2 to 6 mol of electrolyte per L of solvent and also having a voltage of 5.5 V or more when the current density is 0.4 mA/cm2 using lithium as a counter electrode and platinum as a working electrode, wherein the relative density of a lithium metal layer in a negative electrode is 70 to 95%.
Resumen de: WO2026051446A1
The present application relates to the technical field of current collectors, specifically to a composite copper current collector and a preparation method therefor. In the present application, a modified polymer film is obtained by means of subjecting a polymer and an active material to heating and melting, extrusion, casting, and biaxial stretching processes; copper layers are formed on the upper and lower sides of the modified polymer film, respectively, using a chemical plating method; finally, an anti-oxidation layer is prepared on the copper layers, thereby obtaining a composite copper current collector. The composite copper current collector prepared by means of the present application realizes one-step preparation of a composite copper current collector, namely a chemical plating method, successfully solving the problems of high energy consumption and low yield caused by physical vapor deposition process in conventional preparation processes. Compared with conventional methods, the performance of the composite copper current collector prepared by the present application is not degraded, while energy consumption is greatly reduced and yield is increased.
Resumen de: WO2026051440A1
The present disclosure relates to the technical field of batteries. Disclosed are a battery cell, a battery device, and an electric apparatus. The battery cell comprises a pole, an electrode assembly, a casing, and a fixing member, wherein the pole is electrically connected to the electrode assembly; the electrode assembly is arranged in the casing; the casing has a first wall; the pole is arranged on the first wall; the fixing member comprises a first flat portion, a transition portion, and a second flat portion; the transition portion is located between the first flat portion and the second flat portion; the first flat portion is engaged with the pole; the second flat portion is connected to the first wall; at least one of the thickness of the first flat portion in the axial direction of the pole, the thickness of the second flat portion in the axial direction of the pole, and the thickness of the transition portion in a direction perpendicular to the axial direction of the pole is greater than 0.8 mm and less than or equal to 1.5 mm.
Resumen de: WO2026051355A1
Disclosed is a preparation method for a heteroatom-doped carbon material, comprising the following steps: (S1) uniformly mixing a phenolic monomer, an aldehyde monomer and a non-metal doping source, then pre-polymerizing same to obtain a liquid phenolic resin oligomer, then adding a metal doping source and uniformly mixing same, and then curing same to obtain a solid precursor; (S2) sequentially subjecting the solid precursor to crushing, pyrolysis and carbonization, and then an activation process for pore forming, to obtain a carbon material having a porous structure; (S3) pulverizing the carbon material having the porous structure, placing same into a reactor and introducing a silicon-containing gas, performing silicon deposition, and then subjecting same to stabilization treatment to obtain a silicon-carbon composite material; and (S4) performing carbon coating on a surface of the silicon-carbon composite material to obtain a product heteroatom-doped carbon material. By doping with non-metal and metal heteroatoms in a specific order, the present invention improves the kinetic properties of lithium ions and electrons, inhibits composite material particle breakdown during charging and discharging, and improves interface stability.
Resumen de: US20260070791A1
According to various embodiments of the present invention, a silicon composite may include: pure silicon grains; and a buffer layer coated on the surface of the pure silicon grains. A method for manufacturing the silicon composite according to various embodiments of the present invention may include: a step of pulverizing metallurgical-grade silicon particles; and a step of forming a buffer layer layer on the surface of the pulverized metallurgical-grade silicon grains. An anode for a secondary battery according to various embodiments of the present invention may include the silicon composite. A secondary battery according to various embodiments of the present invention may include the anode.
Resumen de: US20260070790A1
Provided are a negative electrode material and a preparation method therefor, a negative electrode plate and a preparation method therefor, an energy storage device, and an electricity-consumption device. The negative electrode material includes hard carbon. The hard carbon has a porous structure and satisfies: 0.32≤Dv50/1000V≤2.40. Dv50 of the hard carbon is in unit of μm; and V represents a total volume of pores in the hard carbon, in unit of cm3/g.
Resumen de: US20260070789A1
Disclosed is a method for synthesizing lithium iron phosphate using anhydrous amorphous iron phosphate. The method includes the following steps: mixing an anhydrous amorphous iron phosphate, a lithium source, an organic carbon source, and a liquid alcohol to obtain a wet mixture; grinding the wet mixture to obtain a slurry, and subjecting the slurry to spray drying to obtain a lithium iron phosphate precursor powder; and calcining the lithium iron phosphate precursor powder in a protective gas atmosphere to obtain an olivine lithium iron phosphate. An anhydrous amorphous iron phosphate is used as a raw material.
Resumen de: US20260070470A1
A method for controlling fuel cell power generation may comprise: obtaining at least one or more of a vehicle speed limit of a forward driving road, whether there is a gradient and gradient data as forward driving information; calculating a total amount value of expected battery output energy based on the obtained forward driving information; and determining a fuel cell power generation output value in a current driving segment in order to charge or discharge a battery based on the total amount value of the expected battery output energy.
Resumen de: US20260070810A1
The present invention discloses to tungsten doped mixed cationic cathodes for energy devices notably non-aqueous re-chargeable alkali-ion electrochemical cells and batteries and to the process of preparation thereof. More particularly, the present invention discloses to doped cathode active materials of Formula (I) that show a higher capacity and which can able to retains their structure during the entire charging-discharging cycles.
Resumen de: WO2026053310A1
This current collector for a secondary battery is provided with: a resin layer containing a resin material; and a metal film provided on the surface of the resin layer. The resin layer includes a thermally conductive element having higher thermal conductivity than the resin material.
Resumen de: WO2026053339A1
This capacity adjustment device for adjusting capacities of a plurality of cells included in a battery pack comprises: a CPU 10 that detects an amount of variation in capacity of a plurality of cells C, selects an adjustment cell to be subjected to capacity adjustment from among the plurality of cells C on the basis of the detected amount of variation, and calculates a discharge target amount of the adjustment cell; and an ASIC 20 that outputs a discharge instruction to discharge the adjustment cell and discharges the adjustment cell. The CPU 10 executes selection processing of the adjustment cell and calculation processing of the discharge target amount before processing by the CPU 10 stops. The ASIC 20 discharges the adjustment cell so that an actual discharge amount of the adjustment cell reaches the discharge target amount while the processing of the CPU 10 is stopped.
Resumen de: WO2026053197A2
At least one first processor of an electronic device included in a battery operating system, according to one embodiment of the present document, can transmit an encrypted first identification code to a server, receive a second identification code encrypted by the server, and authenticate the validity of a battery management device, and at least one second processor of the server included in the battery operating system can obtain the identifier of the battery management device by decrypting the encrypted first identification code, identify the validity of the battery management device, encrypt the second identification code, and transmit the second identification code to the electronic device.
Resumen de: WO2026053524A1
An electrode group according to an embodiment includes a positive electrode and a negative electrode. The electrode group is obtained by winding the positive electrode and the negative electrode with a separator therebetween. In the electrode group, at least part of the electrode group from a start point in the winding to an end point in the winding is provided with a portion in which four or more layers of the positive electrode and the negative electrode are wound in combination.
Resumen de: WO2026055035A1
Herein discussed is an electrochemical device. The device includes an anode, a cathode, and an electrolyte. The anode does not comprise lithium. The electrolyte includes a solvent comprising dimethyl sulfamoyl fluoride (DMSF) and a salt substantially dissolved in the solvent. The salt is selected from the group consisting of sodium bis(fluorosulfonyl)imide (NaFSI), sodium bis(trifluoromethylsulfonyl)imide (NaTFSI), sodium hexafluorophosphate (NaPF6), and combinations thereof. Methods of making and using such devices are also disclosed.
Resumen de: WO2026055034A1
Herein disclosed is an electrochemical device. The device includes an anode, a cathode, and an electrolyte. The cathode includes lithium manganese iron phosphate (LiMnxFe1-xPO4, LMFP) or sodium manganese iron phosphate (NaMnxFe1-xPO4, NMFP), or potassium manganese iron phosphate (KMnxFe1-xPO4, KMFP). The electrolyte includes a solvent comprising N, N-dimethyltrifluoromethane-sulfonamide (DMTMSA) or Dimethylsulfamoyl fluoride (DMSF). Methods of making and using such a device are also disclosed.
Resumen de: WO2026054035A1
The present invention provides, with high production efficiency, an oxysulfide solid electrolyte containing a lithium atom, a phosphorus atom, a sulfur atom, and an oxygen atom. The present invention provides: a method for producing an oxysulfide solid electrolyte, the method including mixing a raw material-containing substance containing a lithium atom, a sulfur atom, a phosphorus atom, and an oxygen atom with a complexing agent containing a compound having at least one atom selected from a nitrogen atom and an oxygen atom; an oxysulfide solid electrolyte precursor configured from a lithium atom, a sulfur atom, a phosphorus atom, and an oxygen atom, and a complexing agent containing a compound having at least one atom selected from a nitrogen atom and an oxygen atom; and an oxysulfide solid electrolyte.
Resumen de: WO2026054033A1
The present invention improves charge/discharge characteristics. This secondary battery comprises a positive electrode, a negative electrode, and an electrolyte solution. The positive electrode is provided with a positive electrode current collector containing aluminum. The electrolyte solution includes an electrolyte and a solvent. The electrolyte includes a bis(fluorosulfonyl) imide salt. The surface of the positive electrode current collector contains sulfur. A photoelectron spectrum obtained by performing X-ray photoelectron spectroscopy on the surface of the positive electrode current collector has a first signal having a peak in a range of 164.1 eV to 164.5 eV, and a second signal having a peak in a range of 168.9 eV to 169.3 eV. The ratio of the sum of the signal intensity of the first signal and the signal intensity of the second signal to the sum of the signal intensities of the S2p spectrum is 0.97 or less.
Resumen de: WO2026054018A1
The present invention improves charge/discharge characteristics. This secondary battery comprises a positive electrode, a negative electrode, and an electrolyte solution. The positive electrode is provided with a positive electrode current collector containing aluminum. The electrolyte solution contains an electrolyte and a solvent. The electrolyte contains a bis(fluorosulfonyl) imide salt. The solvent contains at least one compound selected from a first group consisting of ethylene carbonate, propylene carbonate, fluoroethylene carbonate, dimethyl carbonate, and γ-butyrolactone. The intrinsic molar ratio of the solvent to lithium ions, calculated from the vibrational spectrum of the electrolyte, is greater than 0 and not greater than 1.76.
Resumen de: WO2026053833A1
The present invention improves charge/discharge characteristics. This secondary battery comprises a positive electrode, a negative electrode, and an electrolyte solution. The positive electrode is provided with a positive electrode current collector containing aluminum. The electrolyte solution contains an electrolyte and a solvent. The electrolyte contains a bis(fluorosulfonyl) imide salt. The surface of the positive electrode current collector contains sulfur. A photoelectron spectrum obtained by X-ray photoelectron spectroscopy of the surface of the positive electrode current collector has a first signal having a peak in a range of 164.1-164.5 eV, and a second signal having a peak in a range of 168.9-169.3 eV. The ratio of the sum of the signal intensities of the first signal and the second signal to the total signal intensity of the S2p spectrum is 0.97 or less.
Resumen de: WO2026051345A1
Disclosed are a blade battery and a battery pack having same. The blade battery comprises at least one positive electrode sheet, a plurality of negative electrode sheets, a positive electrode cover plate and a negative electrode cover plate. A first tab and a second tab are respectively provided on two adjacent edges of the positive electrode sheet. The plurality of negative electrode sheets respectively cover two opposite sides of the positive electrode sheet, a third tab and a fourth tab are respectively provided on two adjacent edges of each negative electrode sheet, the positive electrode sheet and the negative electrode sheets are stacked, with the edges thereof flush with each other, the first tab and the third tabs are respectively located on two opposite sides of the blade battery, and the second tab and the fourth tabs are respectively located on two opposite sides of the blade battery. The positive electrode cover plate is located on two adjacent edges of the blade battery, and the positive electrode cover plate is connected to the first tab and the second tab to form a positive electrode. The negative electrode cover plate is located on two adjacent edges of the blade battery, and the negative electrode cover plate is connected to the third tabs and the fourth tabs to form a negative electrode.
Resumen de: WO2026051336A1
Provided are an electrolyte, a battery and an electric device. The electrolyte comprises an organic solvent and a lithium salt. The organic solvent comprises an ionic liquid, a co-solvent and a diluent. The co-solvent comprises an ether solvent. The diluent comprises one or more of the following structural formulas: wherein in structural formula I to structural formula III, R1-R18 are each independently selected from H, F, a C6-C26 fluorine-substituted phenoxy and a C1-C20 fluorine-substituted alkyl; and R1-R8 are not H at the same time, R9-R14 are not H at the same time, and R15-R18 are not H at the same time. A stable negative electrode SEI is generated by using a cyclic fluoroether with a weak coordination capability. The use of the ionic liquid in cooperation with the other components drives a large number of anions to enter an Li+ solvation sheath layer, and the ionic liquid can also participate in the adjustment and control of a solvation structure by means of a series of weak interactions. In the case of the solvation structure being controlled by the ionic liquid, multiple instances of adjustment and control of the interface are completed. The operating temperature of a battery is widened, the cycling life thereof is long, the energy is high and the power density is high, and the high-voltage cycling stability and safety of the battery is also improved.
Resumen de: WO2026051312A1
An electric device. The electric device comprises a battery pack or batteries, the battery pack comprises batteries, each battery comprises battery cells, each battery cell comprises electrode sheets, and each electrode sheet comprises a current collector and a coating layer. The coating layer is provided on the current collector, a thinned region is formed on the coating layer, and the thickness of the thinned region is less than the thickness of other portions of the coating layer.
Resumen de: US20260070808A1
According to embodiments of the present disclosure, a cathode active material for a secondary battery includes first lithium transition metal oxide particles having a single particle form and including cobalt in an amount of 15,000 ppm or less based on their total weight, and second lithium transition metal oxide particles having a secondary particle form and including cobalt in an amount of 15,000 ppm or less based on their total weight. The cobalt content based on the total weight of the first lithium transition metal oxide particles is greater than the cobalt content based on the total weight of the second lithium transition metal oxide particles.
Resumen de: US20260070806A1
A cathode active material for lithium secondary batteries contains secondary particles which are an aggregate of primary particles, in which the cathode active material for lithium secondary batteries has a layered structure, the cathode active material for lithium secondary batteries contains an element M1 and an element M2, the element M1 is at least one element selected from the group consisting of Nb, W, Mo, Ta, La, B, and P, the element M2 is at least one element M2 selected from the group consisting of Ni, Co, and Mn, and (1) and (2) are satisfied.
Nº publicación: US20260070804A1 12/03/2026
Solicitante:
PANASONIC INTELLECTUAL PROPERTY MAN CO LTD [JP]
Panasonic Intellectual Property Management Co., Ltd
Resumen de: US20260070804A1
A vanadium oxide composite of the present disclosure includes: a particle including a vanadium oxide represented by a composition formula (1) Li3+x+aV1−xMxO4+a/2; and an electrically conductive material at least partially coating a surface of the particle. In the composition formula (1), 0
BOPI
Sede Electrónica
