355results about "Impregnation manufacturing" patented technology

The present invention relates to a method of manufacturing an electrode of an all-in-one battery comprising the steps of mixing an electrode active material, a solid electrolyte and a first binder with a first solvent to prepare a primary slurry; drying the primary slurry to prepare a mixture powder; mixing the mixture powder, a conductive agent, and a second binder with a second solvent to prepare a secondary slurry; and coating the secondary slurry on a current collector.

The invention belongs to the technical field of batteries, and particularly relates to a preparation method of coating slurry, a silver-carbon negative electrode plate, a preparation method of the silver-carbon negative electrode plate and a solid-state battery. Compared with the prior art, by controlling the agglomeration degree of the silver material in the negative electrode active coating, silver and carbon particles can be uniformly dispersed, and on the basis of avoiding the generation of lithium dendrites, attachment sites and spaces of the silver particles on the carbon particles are increased, so that the safety performance and the electrical performance of the battery are improved.

A method for manufacturing composite cathode particles based on a dual-coated ternary oxide for an electrochemical battery by a high speed rotation includes the steps of: placing a plurality of large NCM (lithium nickel manganese cobalt oxide) particles and a glass phase material into a first mixer for stirring by a first high speed rotation to form a plurality of glass-phase-layer-contained NCM particles; then mixing a plurality of small LLZO particles and the glass-phase-layer-contained NCM particles by a second high speed rotation of a second mixer to form a plurality of composite NCM particles; and then mixing the composite NCM particles, a plurality of first carbon nanotubes and a plurality of nanoscale amorphous carbons to form a plurality of carbon-material-contained positive electrode particles.

According to an aspect of the present invention, there is provided a method for manufacturing a secondary battery, the method including: preparing an electrode assembly in which electrodes and a separator are alternately laminated, and an adhesive is applied to the surface of at least one among the electrodes and the separator, thereby allowing the electrodes and the separator to adhere to each other; accommodating the electrode assembly in a battery case; injecting a gel polymer electrolyte composition into the battery case to impregnate the electrode assembly with the gel polymer electrolyte composition; and curing the gel polymer electrolyte composition, wherein the adhesive includes a first oligomer compound, the separator includes a porous substrate and ceramic coating layers disposed on both surfaces of the porous substrate, the ceramic coating layers include 92-100 wt % (exclusive of 100) of inorganic particles and 0-8 wt % (exclusive of 0) of a binder, and the gel polymer electrolyte composition includes a lithium salt, an organic solvent, a polymerization initiator, and a second oligomer compound.

The invention discloses a method for removing residual alkali on the surface of a high-nickel positive electrode material in a ternary lithium battery and application of the method, and belongs to the technical field of lithium ion battery positive electrode materials. After the lithium ion ternary positive electrode material is subjected to coating treatment, residual alkali compounds on the surface of the lithium ion ternary positive electrode material are remarkably reduced, and a coating material protection layer can be constructed on the surface of the lithium ion ternary positive electrode material in situ; therefore, an electrode / electrolyte interface structure is strengthened, side reaction and interface impedance are inhibited, and the specific discharge capacity and rate capability of the battery are remarkably improved. The method is simple and convenient in process and mild in condition, and has a good industrial application prospect.

Generally described, one or more aspects of the present disclosure relate to methods, systems, and devices related to a powder dispensing system, including a pair of calender rolls, a first conical hopper and a second conical hopper positioned above the pair of calender rolls, each hopper having a first temperature controlled fluidized section, a first flow control system in fluidic connection with the first temperature controlled fluidized section, and a second flow control system in fluidic connection with the second temperature controlled fluidized section, a vertical linear actuator configured to adjust a distance between the first conical hopper, the second conical hopper and the pair of calender rolls, and a horizontal linear actuator positioned between the first conical hopper and the second conical hopper.

The invention discloses a multi-layer structure lithium-free negative electrode, a preparation method and a solid lithium-free negative electrode battery, the multi-layer structure lithium-free negative electrode comprises a first material layer, a second material layer and a third material layer which are arranged in sequence, the first material layer is a conductive carbon layer, the second material layer is a compact lithium-loving metal or metal oxide layer, and the third material layer is a lithium-loving metal or metal oxide layer. The third material layer is a porous material layer containing Lewis acid sites. The lithium-free negative electrode with the multi-layer structure has a relatively good lithium-loving characteristic, and in the lithium removal process, the copper foil and the coating can keep relatively good structural integrity and maintain a good conductive network, so that the lithium removal reaction can be continuously and stably carried out; the lithium-loving metal layer can be alloyed with lithium to form a relatively low nucleation barrier; the porous material layer containing Lewis acid sites can be compounded with an electrolyte to form an ionic conductor, a stable lithium-loving SEI layer is formed, a large number of Lewis acid sites can effectively improve the lithium deposition morphology and regulate and control uniform deposition of lithium, finally uniform lithium deposition can be achieved, and the cycle performance of a lithium-free negative electrode is improved.

The invention relates to a double-fluorine-doped carbon composite sodium ferric sulfate positive electrode material and a preparation method and application thereof, the positive electrode material is hollow microsphere particles formed by using fluorine-doped inorganic carbon composite inorganic conductive carbon as a coating layer and coating a fluorine-doped sodium ferric sulfate bulk phase, and the inorganic conductive carbon is uniformly distributed in the positive electrode material. The invention also discloses a preparation method and application of the double-fluorine-doped carbon composite sodium ferric sulfate positive electrode material. A battery assembled by a positive electrode plate prepared from the positive electrode material is high in median voltage, good in electronic conductivity, high in median voltage and energy density, long in cycle and high in specific energy. The method is simple in process, short in production period, accurate in control, low in raw material cost and suitable for large-scale continuous production.

The embodiment of the invention provides a silicon-based negative electrode material and a preparation method thereof, a negative electrode plate and an all-solid-state battery. The silicon-based negative electrode material comprises spherical porous silicon and metal indium, and the metal indium completely fills pores of the spherical porous silicon and coats the surface of the spherical porous silicon to form a continuous coating layer. The technical problems that the internal structure of the battery is damaged and the interface contact fails due to serious volume expansion or shrinkage of the silicon-based negative electrode material in the charging and discharging process, so that the cycle performance of the all-solid-state battery is poor, and the interface contact can be maintained by high voltage are solved.

Generally described, one or more aspects of the present disclosure relate to systems, methods, and devices for trimming and peeling electrode films. The system can be integrated into a calender rolling system and can create multi-lane films with clean edge quality for lamination. The system can include a trimming device including a cutting device, and a material removing device positioned downstream from the cutting device, the material removing device including a scraper element, a support element positioned upstream from the scraper element, and a vacuum element.

A sulfide all-solid-state battery and a method for forming an oxide electrolyte coated cathode is provided. The battery includes a nickel-based cathode, an electrolyte coating adhered to the nickel-based cathode, an anode, and a sulfide solid electrolyte. The nickel-based cathode includes LiNi1-x-y-zCoxMnyAlzO2. The electrolyte coating includes an inorganic oxide solid electrolyte including Li1+nAlnTi2−n(PO4)3 (LATP), where 1-x-y-z is greater than 0.2, x is greater than or equal to 0, y is greater than or equal to 0, and z is greater than or equal to 0, and where n is between 0.2 and 0.5. The sulfide solid electrolyte transports charged ions between the anode and the nickel-based cathode.

Embodiments described herein relate generally to semi-solid electrodes, and methods of producing the same. In some embodiments, a method of forming a semi-solid electrode can include mixing an active material, a conductive material, and an electrolyte solvent to produce a semi-solid material. The electrolyte solvent is free of electrolyte salt. The method further includes dispensing the semi-solid material onto a current collector and wetting the semi-solid material with an electrolyte solution to form the semi-solid electrode. In some embodiments, the wetting can be via spraying. In some embodiments, the electrolyte salt can have a concentration in the electrolyte solution of at least about 1 M, at least about 2 M, or at least about 3 M. In some embodiments, the solvent can include ethyl methyl carbonate (EMC), ethylene carbonate (EC), propylene carbonate (PC), dimethyl carbonate (DMC), gamma-Butyrolactone (GBL), or any combination thereof.

The present application provides a carbon-coated current collector containing a lithium replenishment coating layer, a method for manufacturing the same, and a lithium battery, which belongs to the technical field of lithium battery materials. [Solution] A method for manufacturing a carbon-coated current collector containing a lithium-replenished coating layer includes chemically etching a current collector substrate to embed a lithium-replenished material therein to form a lithium-replenished coating layer, and then applying a conductive carbon coating layer slurry to the surface of the lithium-replenished coating layer to form a conductive carbon coating layer. By chemically etching a current collector substrate to attach a lithium-replenished coating layer and then attaching a conductive carbon coating layer, the surface tension of the current collector can be improved, which is advantageous for the application and attachment of an electrode active material. At the same time, the introduction of the conductive carbon coating layer reduces the contact resistance between the electrode active material and the current collector, improving the usage consistency of lithium battery packs and significantly reducing the cost of lithium battery packs.

A positive electrode active material, a method for preparing the positive electrode active material, and a rechargeable lithium battery including the positive electrode active material are disclosed. The method for preparing a positive electrode active material may include pulverizing a carbon-based raw material to prepare carbon-based fine powder, mixing a lithium metal composite oxide and the carbon-based fine powder to prepare a mixed powder, and applying rotation to the mixed powder to form or provide a carbon-based coating layer on a particle surface of the lithium metal composite oxide. The average particle diameter of the carbon-based fine powder may be about 10 nm to about 100 nm. The applying of the rotation may include applying rotation of about 1,000 rpm to about 6,000 rpm for about 2 minutes to about 10 minutes.

The invention relates to the technical field of lithium ion batteries, in particular to an ultrahigh-nickel ternary positive electrode material as well as a preparation method and application thereof. The preparation method of the ultrahigh-nickel ternary positive electrode material provided by the invention comprises the following steps: mixing a first vinyl polymer, a precursor, a metal oxide and a solvent to obtain a spinning solution A; mixing a second vinyl polymer, a lithium source and a solvent to obtain a spinning solution B; respectively depositing the spinning solution A and the spinning solution B by adopting an opposite electrostatic spinning technology to obtain a film-shaped material, and sintering to obtain a matrix material; and coating the surface of a base material by a wet method to prepare a fast ion conductor coating layer, and carrying out second sintering to obtain the ultrahigh-nickel ternary positive electrode material. According to the method provided by the invention, the agglomeration phenomenon of the ultra-high nickel positive electrode material in the sintering process is effectively reduced, so that the lithium ion battery containing the ultra-high nickel ternary positive electrode material has relatively high capacity and excellent cycle performance.

The invention discloses a pretreatment method for a negative pole piece of an aqueous zinc ion secondary battery, which comprises the following steps: preparing a treatment solution composed of deionized water, an alcohol organic matter and zinc tetrafluoroborate, immersing a zinc foil into the treatment solution, standing for 1-3 days, taking out, washing and drying to obtain the surface-modified zinc negative pole piece. The invention provides a pretreatment process for applying the functionalized electrolyte to the zinc negative electrode for the first time, so that active and controllable modification of a zinc negative electrode interface is realized, and the uncontrollability of a self-formed interface traditionally depending on a first cycle is avoided. A uniform and compact interface layer is formed on the surface of the zinc negative electrode pretreated through the method, zinc dendrite growth and side reactions such as hydrogen evolution and corrosion are effectively inhibited, the coulombic efficiency is remarkably improved, and the cycle life is remarkably prolonged. The method has the advantages of simple process, cheap raw materials, no need of complex equipment, easiness in integration with an existing battery production line, compatibility of treating fluid components with a conventional aqueous electrolyte, no influence on subsequent normal operation of a battery, and good industrial application prospect.

This application provides an electrode sheet and its preparation method, a battery cell, a battery, and an electrical device, belonging to the field of battery technology. The electrode sheet includes a current collector, an active material layer, a first insulating layer, and a second insulating layer. The current collector includes a main body and a tab, with the tab extending from a first end of the main body along a first direction. The main body includes a coating area and a transition area, with the transition area disposed between the coating area and the tab. The active material layer is disposed on the surface of the coating area. The first insulating layer is disposed on the end face of the main body at the first end. At least a portion of the second insulating layer is disposed on the surface of the transition area, and the second insulating layer includes a thermoplastic polymer with a volume particle size distribution D. V 50 represents the maximum particle size D of thermoplastic polymers, ranging from 6μm to 10μm. max The thickness ranges from 90μm to 110μm. The technical solution of this application is beneficial to improving the reliability of individual battery cells.

A negative electrode manufacturing device for a secondary battery includes a dual slot die and a coating roll. The dual slot die includes an upper block, a middle block, a lower block, a first slot and a second slot. The first slot is a gap between the upper block and the middle block for discharging negative electrode slurry, and the second slot is a gap between the middle block and the lower block for discharging negative electrode slurry. The upper block, the middle block, and the lower block comprise an upper lip, a middle lip, and a lower lip located at each front end with magnetism of the same polarity. The coating roll exhibits a magnetism of a polarity opposite to the polarity of the magnetism of each lip. A method of manufacturing using the same is also provided.

The invention relates to a cathode for a lithium-ion battery comprising a layer of a conductive material arranged to collect the current flowing through the cathode, which layer is referred to as the substrate of the cathode, a layer of carbon nanotubes (CNTs) aligned in electrical contact with the substrate of the cathode and mainly extending perpendicular to the substrate of the cathode, solid sulphur which at least partially coats an outer wall of the CNTs and a solid layer of solid lithium sulphate (Li2SO4), which layer is referred to as the outer layer of Li2SO4, covering the layer of CNTs so as to form a stack of layers in which the layer of CNTs is located between the substrate of the cathode and the outer layer of Li2SO4.

The present application provides a lithium battery, a manufacturing method thereof, a charging method thereof, and a power vehicle, the lithium battery comprising: a positive electrode plate; a negative electrode plate; a separator and an electrolyte solution disposed between the positive electrode plate and the negative electrode plate; a negative electrode material layer of the negative electrode plate contains a lithium silicon composite negative electrode active material; a protective layer is provided on the surface of the negative electrode material layer or a protective layer is provided on the surface of the lithium silicon composite negative electrode active material, the protective layer includes a polymer matrix and a lithium salt; and when the lithium battery is fully charged, the lithium silicon composite negative electrode active material is a lithium elemental material and a lithium silicon alloy Li 4.4 The lithium silicon composite negative electrode active material contains Si, and the molar ratio of lithium in the lithium silicon composite negative electrode active material is 15% to 95%.

A lithium-ion battery component and methods for producing the lithium-ion battery component are presented. The lithium-ion battery component includes a current collector and a solvent-free electrode layer laminated onto the current collector. The solvent-free electrode layer has an active material, a conductive additive, a binder, and a fluorinated polyether in a dry mixture. The fluorinated polyether is incorporated to promote interfacial contact and adhesion between the solvent-free electrode layer and the current collector.

A dry electrode manufacturing apparatus includes an input portion configured to supply electrode powder, a guide chute configured to pass the electrode powder supplied from the input portion, a dispersion rod disposed inside the guide chute and configured to undergo at least one of a linear motion or a rotational motion to disperse the electrode powder and adjust a particle-size distribution, a drive unit configured to provide power to the dispersion rod, and compression rolls configured to compress the electrode powder discharged from the guide chute into an electrode member in a sheet form having a desired thickness.

A manufacturing device of a fiber-type electrode includes: a bath including a coagulant; a transport portion including a supply roll provided outside the bath, a take-up roll provided inside the bath to be immersed in the coagulant, and a winding roll provided outside the bath, and configured to transport a fiber-type substrate; and a nozzle between the supply roll and the take-up roll. The nozzle includes a guide pipe that provides a moving passage of the fiber-type substrate, an inner main body around the guide pipe and that provides a central axis space in which an active material solution is supplied, and an outer main body around the inner main body and that provides a peripheral space in which a polymer solution is supplied.

The present application relates to the technical field of new energy, and provides a negative electrode sheet, a secondary battery, and a manufacturing method for a negative electrode sheet. The negative electrode sheet comprises a negative electrode current collector and a negative electrode coating; the negative electrode coating is applied to the negative electrode current collector; the negative electrode coating comprises a solid-state mixture; the solid-state mixture comprises a negative electrode active material, a conductive agent, a binder, a dispersant, and a thickening agent; the composition ratios of the negative electrode coating satisfy the relational expression: 2.6%<pm1 / 100+2m2+m3≤10%, wherein m1 is the mass fraction of the thickening agent in the solid-state mixture, m2 is the mass fraction of the dispersant in the solid-state mixture, m3 is the mass fraction of the binder in the solid-state mixture, and p is the degree of polymerization of the thickening agent. The negative electrode sheet provided by the present application can solve the problems of increased internal resistance, reduced rate capability and shortened cycle service life of a battery caused by the increase in the energy density of the battery, thereby simultaneously improving the energy density, rate capability and cycle service life of the battery.

Disclosed are a method for producing an electrode for a galvanic cell, an electrode for a galvanic cell, a galvanic cell, and uses of the galvanic cell. The method comprises: applying a separator membrane to a planar electrode such that an intermediate space is formed between the planar electrode and the separator membrane; subsequently applying a liquid comprising a particular material to the separator membrane, wherein the liquid comprising material penetrates, by way of capillary forces, at least into the pores of the separator membrane, into the intermediate space between the planar electrode and the separator membrane and into pores of the planar electrode, wherein the liquid is subsequently evaporated. The method makes it easily and inexpensively possible to provide an electrode which exhibits a high energy density at the cell level and high chemical, electrochemical and mechanical stability, exhibits high cycle stability and allows high operating currents.

The invention relates to the technical field of solid-state batteries, in particular to a lithium metal negative pole piece, an all-solid-state lithium ion battery and a preparation method of the all-solid-state lithium ion battery. Comprising the following steps: S1, preparing a lithium metal negative electrode substrate; s2, preparing reactive material slurry; the reactive material slurry comprises a lithium salt cosolvent, a polymer capable of conducting lithium ions, metal fluoride and an organic solvent; and S3, preparing the reactive lithium metal negative electrode plate. According to the invention, direct contact between the lithium metal negative electrode and the sulfide electrolyte layer is avoided, the influence of an interfacial film on battery impedance is eliminated, and the cycle performance and rate capability of the all-solid-state lithium metal battery are improved.

A positive electrode includes a positive current collector and a positive active layer. The positive active layer is disposed on a preset surface of the positive current collector. The positive active layer includes positive electrode particles partially embedded into the positive current collector. The positive electrode particles are made from sodium iron phosphate pyrophosphate. The positive electrode particles are spheroidal or spherical. The positive electrode satisfies: b≤c·α / 180°, where b denotes a depth to which the positive electrode particles are embedded into the positive current collector, α denotes an included angle between tangents at two points farthest away from each other on an intersection line of the preset surface and a surface of each of the positive electrode particles partially embedded, and c denotes a distance between an intersection of the tangents at two points farthest away from each other on the intersection line and the preset surface.

The pouch cell includes a positive electrode, a negative electrode, and a diaphragm placed between the positive electrode and the negative electrode. The positive electrode material includes a ternary material coated with lithium manganese iron phosphate; the negative electrode material includes a silicon carbon-mesophase carbon microsphere composite material; the diaphragm is a polyimide nanofiber diaphragm. The present disclosure uses silicon carbon-mesophase carbon microsphere composite material as the negative electrode, lithium manganese iron phosphate coated ternary positive electrode as the positive electrode material, and polyimide nanofiber separator. The safety is obviously improved during piercing. Meanwhile, it may take into account the electrical performance, improve the capacity, charge and discharge rate, long cycle performance and wide temperature range performance of lithium-ion cells; it also improves the service life and cycle life; it has low calorific value, good safety, high stability, and is not prone to dangerous situations such as combustion or explosion.

A positive electrode 10 according to the present disclosure includes a positive electrode current collector 11 and a positive electrode active material layer 12 supported on the positive electrode current collector 11. The positive electrode active material layer 12 includes a positive electrode active material and a phosphorus compound. The phosphorus compound includes a P=O bond. The positive electrode active material layer 12 is divided into a first region 12a and a second region 12b in a plane direction, a mass ratio P1 / A1 of the phosphorus compound to the positive electrode active material in the first region 12a is 0.2 mass% or more and 8 mass% or less, and a mass ratio P2 / A2 of the phosphorus compound to the positive electrode active material in the second region 12b is less than 0.2 mass%.

The invention discloses a rigid-flexible synergistic polymer modified negative electrode material as well as a preparation method and application thereof. The polymer is prepared from one or more of a diamine monomer, a dianhydride monomer, crown ether, cyclodextrin and polyhedral oligomeric silsesquioxane. The polymer can form a porous interface layer with a protection effect after being modified on the surface of a negative electrode material by virtue of the rigid-flexible synergetic molecular structure characteristic of the polymer. When the negative electrode material is used for constructing a lithium battery, the interface stability can be remarkably improved, the cycle life can be remarkably prolonged, high energy density and excellent cycle stability are shown, and the negative electrode material has effectiveness and practical application potential in the aspects of inhibiting dendritic crystal growth, reducing gas production and prolonging the service life of the battery.