1167results about "Impregnation manufacturing" patented technology

Batteries, component structures and manufacturing methods, in particular including a glassy embedded battery electrode assembly having a composite material structure composed of interpenetrating material components including a porous electroactive network including a solid electroactive material, and a continuous glassy medium including a Li ion conducting sulfide glass, can achieve enhanced power output, reduced charging time and / or improved cycle life.

The invention provides a positive plate, a preparation method thereof and a battery. The positive plate comprises a positive current collector, and a first positive active coating and a second positive active coating which are sequentially arranged on at least one side of the positive current collector, the first positive electrode active coating is close to one side of the positive electrode current collector, and the first positive electrode active coating comprises a first manganese iron lithium phosphate active material and a nickel-cobalt-manganese ternary active material; in the first positive electrode active coating, the mass ratio of the first lithium manganese iron phosphate active material to the nickel-cobalt-manganese ternary active material is (80-90): (8-15); the second positive electrode active coating is far away from one side of the positive electrode current collector, and the second positive electrode active coating comprises a second lithium manganese iron phosphate active material; the surface density rho1 of the first positive electrode active coating and the surface density rho2 of the second positive electrode active coating meet the following conditions: rho1 is greater than or equal to 240 g / m < 2 >, and rho2 is greater than or equal to 240 g / m < 2 >; and rho1-rho2 is less than or equal to 5g / m < 2 >. The positive plate has relatively high electron conduction and ion conduction performance, meanwhile, the polarization of the positive plate is effectively reduced, and the cycle performance and the thermal stability of the battery are greatly improved.

Embodiments described in this application relate generally to a system, an apparatus and / or methods for manufacturing electrodes by infusion electrolyte into compacted electrode materials. In some embodiments, a working electrode materials can be produced using an infusion mixing and manufacturing process. In some embodiments, a single-sided finished electrode can be produced directly from a dry powder mixture using an infusion mixing and manufacturing process. In some embodiments, a double-sided finished electrode can be produced directly from a dry powder mixture using an infusion mixing and manufacturing process. The electrodes produced by an infusion mixing and manufacturing process generally perform better than those produced by non-infusion processes.

A glassy electroactive prepreg made by generating submicron particles of lithium-ion conducting sulfide glass by providing lithium-ion conducting sulfide glass feedstock material, and subjecting the feedstock material to subzero processing to transform the material into submicron particles can avoid plastic deformation of sulfide glass particles during grinding and produce submicron powders. The prepreg is formed by providing a porous electroactive layer comprising electroactive material, and infiltrating the porous electroactive layer with the submicron particles of lithium-ion conducting sulfide glass. The subzero processing can include cryogenic processing. The prepreg can be used to form glassy embedded electrodes.

The invention provides a thermal battery pole piece coating assembly line based on modular design, and relates to the technical field of thermal electrode piece processing control, and multiple optimization algorithms are applied on the thermal electrode piece coating assembly line, so that the assembly line can be used for coating thermal electrode pieces according to different production requirements and conditions. Strategies in the aspects of module combination, production scheduling, energy management, material distribution and the like are automatically adjusted, intelligent production decision making is achieved, manual intervention is reduced, the automation level and accuracy of production are improved, different modules can be flexibly combined on an assembly line through modular design, the assembly line is suitable for coating production of thermal battery pole pieces of different specifications and types, and the production efficiency is improved. Meanwhile, the optimization algorithm can be adjusted according to different production tasks, so that the assembly line has higher adaptability and universality, can quickly respond to the change of market requirements, can accurately control the coating process and optimize the material delivery path, reduces the waste of raw materials and the loss of resources, improves the utilization efficiency of the resources, and reduces the production cost. And sustainable utilization of resources is realized.

The invention discloses carbon-coated lithium iron phosphate, a preparation method thereof and a lithium battery, and the preparation method of the carbon-coated lithium iron phosphate comprises the following steps: (1) mixing an iron phosphate precursor and a fullerene solution, and then drying to obtain a fullerene-coated iron phosphate precursor; wherein a solvent of the fullerene solution is a non-aqueous solvent; (2) mixing the fullerene-coated iron phosphate precursor, a lithium source, a metal ion dopant and a carbon source, carrying out ball milling to obtain a mixture, and drying the mixture; the metal ion dopant comprises a metal doping element; and (3) sintering the dried mixture in a protective atmosphere to obtain the carbon-coated lithium iron phosphate. According to the method, the conductivity of the carbon-coated lithium iron phosphate material can be improved, the powder resistance of the material is reduced, and the energy efficiency of the battery is improved.

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 discloses a solid-state battery negative electrode. The solid-state battery negative electrode comprises negative electrode active material particles containing silicon-coated graphite and a rubber-based binder, and the rubber-based binder has a cross-linked structure formed by vulcanization.

The invention relates to a carbon nanofiber loaded Cu nanoparticle composite material prepared by combining an electrostatic spinning method and a high-temperature in-situ reduction reaction and used as a high-cycle-stability zinc negative electrode coating of an aqueous zinc ion battery. Belongs to the technical field of new energy materials. The prepared composite electrode material is regular in structure and excellent in electrochemical performance. Cu is introduced through a high-temperature in-situ reduction reaction. And after the Cu is loaded with the carbon nanofibers, not only is the slow dynamic process of the bare zinc electrode improved, but also the uniform deposition of Zn < 2 + > on the zinc negative electrode in the embedding / separating process is induced.

A lithium manganese iron phosphate substrate, cathode material, and their preparation method, as well as a lithium battery, belonging to the field of lithium-ion battery technology. The preparation of the lithium manganese iron phosphate substrate comprises the following steps: dissolving soluble ferrous salt, soluble manganese salt, phosphoric acid, and lithium hydroxide in deionized water to react, obtaining Material A; filtering Material A, taking the filter cake and drying it to obtain Material B; Heat treating Material B in an inert gas atmosphere to obtain the lithium manganese iron phosphate substrate. By coating the surface of the carbon-free nano lithium manganese iron phosphate substrate with metal oxides or metal salts and carbon, the coating layer formed on the surface of the composite lithium manganese iron phosphate material effectively prevents the reaction between the lithium battery and the electrolyte.

The invention discloses a silicon-based negative electrode piece and a preparation method and application thereof, and relates to the technical field of batteries, the silicon-based negative electrode piece comprises a negative electrode current collector and a negative electrode coating located on the surface of the negative electrode current collector, the negative electrode coating contains a negative electrode active material, and a plurality of micro-nano holes are formed in the surface of the negative electrode coating; the negative electrode coating comprises a first coating close to the negative electrode current collector and a second coating positioned above the first coating; the first negative electrode active substance in the first coating comprises first graphite, and the second negative electrode active substance in the second coating comprises second graphite and a silicon-based negative electrode material. Graphite serves as the first layer, a solid foundation is provided for the silicon-based negative plate, and the basic performance of the battery is guaranteed; and the second layer is formed by compounding a conductive agent modified silicon-based material and graphite, precise coating is carried out by virtue of a micro-concave coating technology, an electron conduction path of the silicon-based material is improved, and the overall electrochemical performance is optimized by virtue of precise control on the thickness and the uniformity of the coating by virtue of micro-concave coating.

The invention provides a sulfide composite solid-state positive electrode, a preparation method thereof and an all-solid-state battery. The preparation method comprises the following steps: (1) coating the surface of at least one side of a current collector with positive electrode slurry, and drying to obtain a positive electrode layer with a pore structure; (2) coating the surface of one side, far away from the current collector, of the positive electrode layer with sulfide electrolyte dispersion liquid, so that the sulfide electrolyte dispersion liquid permeates into the pore structure of the positive electrode layer, and then drying; and (3) repeating the step (1) and the step (2) at least once, and then drying and rolling to obtain the sulfide composite solid positive electrode, wherein the sulfide electrolyte dispersion liquid comprises a sulfide electrolyte and a non-polar solvent, and the sulfide electrolyte and the non-polar solvent are immiscible with each other. According to the preparation method provided by the invention, the sulfide electrolyte can be uniformly distributed in the positive electrode layer in an alternate coating mode, and the ionic conductivity of the sulfide electrolyte is not influenced.

The invention relates to a base membrane for a composite current collector based on SiO2 nano composite modification and a preparation method of the base membrane. Synergistic modified nano SiO2 is compounded with aluminum hypophosphite, montmorillonite and the like to form modified auxiliary particles, the modified auxiliary particles and PET master batches are subjected to blending extrusion, and meanwhile, the surface of the base membrane is coated with a modified coating containing nano SiO2, so that the composite current collector is obtained. The mechanical property, the thermal stability and the flame retardance of the base film are obviously improved.

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 invention provides a double-layer double-high type electrode, a reserve lithium battery and a preparation method thereof, the double-layer double-high type electrode comprises a current collector, a first active layer and a second active layer, the first active layer is located between the current collector and the second active layer, the first active layer contains an energy type active material, and the second active layer contains an energy type active material. The second active layer contains a pre-charged power type active material, and the open-circuit voltage difference between the energy type active material and the pre-charged power type active material is less than or equal to 0.5 V. The invention provides the double-layer double-high type electrode for the reserve lithium battery, which is quick in activation, high in energy density and good in rate capability, an efficient conductive network is constructed, and the discharge performance of the battery is improved; the porosity of the second material layer is regulated to be greater than that of the first material layer, and the seepage flow guide grooves are dug in the surface of the second material layer, so that the electrolyte infiltration rate of the electrode is improved, and the activation time is shortened.

The invention provides a negative electrode active material and a preparation method thereof, a negative electrode for a sodium ion battery, the sodium ion battery and an electric device. The negative electrode active material comprises a nitrogen-doped carbon sphere matrix and manganese monoxide embedded into the nitrogen-doped carbon sphere matrix, the average particle size of the manganese monoxide is 1.5 nm to 2.5 nm. In the negative electrode active material, the quantum-dot-level MnO is embedded into the nitrogen-doped carbon sphere matrix, so that a tight embedded structure (non-surface loading) of the quantum-dot-level MnO and the nitrogen-doped carbon spheres can be realized, volume expansion when sodium ions are embedded and removed is effectively relieved, and an efficient electron / ion transmission channel is provided. Meanwhile, the quantum dot-level MnO has a larger specific surface area, and provides more adsorption sites with the nitrogen-doped carbon, so that the composite material shows a pseudocapacitance-dominated sodium storage behavior, and is endowed with ultrahigh rate capability and ultra-long cycle life.

The invention belongs to the technical field of lithium ion battery additive materials, and particularly relates to a high-compaction dispersion material and a preparation method thereof, and a high-compaction flexible positive pole piece, the high-compaction dispersion material comprises the following components by mass: 30-40 parts of a component A, 5-10 parts of a component B, 5-10 parts of a component C, and 40-60 parts of a solvent; wherein the component A comprises an unsaturated cyclic monomer, unsaturated polyether and a solution polymerization copolymer of an amine-containing monomer and a (methyl) acrylate monomer; the component B comprises a long-chain amine substance; the component C comprises organic ester; the high-compaction dispersion material, the preparation method thereof and the high-compaction flexible positive pole piece have the advantages of being excellent in dispersion performance, outstanding in softening effect, remarkable in pole piece compaction density improvement and the like, can have the two functions of dispersion and compaction improvement, reduces the production cost, improves the pole piece yield and has a good application prospect.

The invention discloses a lithium metal interface modification method and a lithium metal battery, and the modification method comprises the following steps: carrying out surface treatment on lithium metal to obtain treated lithium metal; adsorbing the modification liquid by adopting a carrier material; placing the carrier material adsorbing the modification liquid on the treated lithium metal surface; applying a preset pressure to the carrier material; and removing the carrier material, standing and drying to obtain the lithium metal containing the artificial solid-liquid interface. The modification liquid is adsorbed to the surface of the lithium metal by adopting the carrier material, and the carrier material and the lithium metal are tightly attached through pressure, so that the modification liquid and the lithium metal can be fully subjected to in-situ chemical reaction, and the ASEI film on the modified lithium metal surface is uniform in thickness and relatively high in flatness; according to the lithium metal surface modification method, the thickness consistency and component distribution consistency of the lithium metal artificial solid-liquid interface can be improved, the modified lithium metal interface can effectively inhibit growth of lithium dendrites, and the cycle life of a lithium metal battery is prolonged.

A cell for use in an electrochemical cell, that includes a positive electrode, a negative electrode, an electrolyte, and a separator in the form of a zeolite-based material comprising one or more naturally occurring or synthetically synthesized zeolites applied directly to at least one of the positive electrode and the negative electrode. The positive electrode configured so that non-reactive metal ions are reversibly extracted there from and inserted therein. The negative electrode configured to reversibly accept and release the non-reactive metal ions. The electrolyte positioned between and in contact with the negative electrode and the positive electrode, such that the electrolyte supports a reversible flow of the non-reactive metal ions between the positive electrode and the negative electrode. The separator being configured to electrically isolate the positive electrode from the negative electrode, while being permeable to the reversible flow of the non-reactive metal ions there through.

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 a first negative electrode slurry, and the second slot provided is a gap between the middle block and the lower block for discharging a second negative electrode slurry. The coating roll is disposed opposite the first and second slots and transfers the electrode sheet. The upper block, the middle block, and the lower block comprise an upper lip, a middle lip, and a lower lip forming an outlet at each front end and exhibit magnetism of the same polarity. A method of manufacturing using the same is also provided.

The invention discloses a preparation method of a nanosheet-organic active molecule-catalyst hybrid material and application of the nanosheet-organic active molecule-catalyst hybrid material in a photoelectric storage integrated battery, and the preparation method of the material comprises the following steps: adding organic active molecules into an organic dispersion liquid containing nanosheets for ultrasonic dispersion, so that the organic active molecules are intercalated into the nanosheets, a nanosheet-organic molecule mixed dispersion liquid is obtained; the preparation method comprises the following steps: adding a cross-linking agent, enabling nanosheets and organic active molecules to realize covalent cross-linking under the action of a first catalyst, and physically mixing a nanosheet-organic electrode material obtained by separation with a second catalyst to obtain the nanosheet-organic active molecule-catalyst hybrid material. According to the invention, a monatomic or diatomic catalyst is introduced into the zinc ion battery for the first time, the polarization potential of the zinc ion battery can be reduced, the cycle life of the zinc ion battery is prolonged, and the zinc ion battery is used as an energy storage electrode of a photoelectric storage integrated battery, so that the storage rate of photo-generated charges is accelerated, and the overall conversion efficiency of the photoelectric storage integrated battery is improved.

The embodiment of the invention relates to a composite metal lithium negative plate, a preparation method thereof and a lithium battery. The composite metal lithium negative electrode plate comprises a negative electrode current collector and a composite metal lithium negative electrode material; the composite metal lithium negative electrode material is obtained by drying blended slurry of a metal lithium solution, a conductive material, a binder and a lithium-philic compound, the blending slurry is coated on the negative electrode current collector; according to the composite metal lithium negative electrode plate, the lithium-loving compound is used as a lithium element nucleation site, and the lithium-loving compound and the metal lithium solution are combined to generate a synergistic effect to form a uniform negative electrode material, so that lithium ions are uniformly embedded and deembedded in the charging and discharging processes; therefore, formation of lithium dendrites on the surface of the composite metal lithium negative electrode material is inhibited.

An apparatus for manufacturing an electrode body includes a coater and an attraction magnet. The coater applies a mixture paste including an electrode active material to a substrate that is configured to be a current collector. The attraction magnet is opposed to an applied layer of the mixture paste formed on the substrate so that when the mixture paste contains a metal object, the attraction magnet attracts the metal object so as to change a shape of a surface of the applied layer.

Disclosed is a solid-state battery negative electrode including negative electrode active material particles containing silicon-coated graphite, and a rubber-based binder, wherein the rubber-based binder has a cross-linked structure formed through vulcanization.

The low-temperature power type lithium ion battery comprises the positive pole piece, a negative pole piece, an electrolyte and a diaphragm, positive electrode slurry of the positive electrode plate comprises the following components in percentage by weight: 95%-97.5% of a positive electrode active material, 1.5%-3% of a positive electrode conductive agent and 1%-2% of a positive electrode binder; the positive pole piece is prepared by dispersing the components in an N-methyl pyrrolidone solvent and performing wet blade coating; the positive electrode active material is a nickel cobalt lithium manganate ternary material, the particle size distribution D50 of the positive electrode active material is 3.0-3.5 m, and the specific surface area of the positive electrode active material is 1.5-2.0 m < 2 > / g; the positive electrode conductive agent is composed of conductive graphite and carbon nanotubes, and the weight percentage of the conductive graphite is 50-70%; the positive electrode binder is polyvinylidene fluoride; the low-temperature performance of the positive electrode material is effectively improved.

The invention discloses a green and environment-friendly sodium ion battery hard carbon negative electrode material preparation method, which comprises: S1, pre-carbonization: pre-carbonizing a biomass raw material under a protective atmosphere to obtain a pre-carbonized material; s2, granularity control treatment: crushing and refining the pre-carbonized material obtained in the step S1 to obtain a refined pre-carbonized material; s3, preparation of a precursor material: stirring and dispersing the refined pre-carbonized material obtained in the step S2, an acid solution and deionized water to form precursor slurry, carrying out temperature-controlled sanding, and then carrying out solid-liquid separation, water washing and drying to obtain the precursor material; s4, high-temperature sintering: performing high-temperature carbonization on the precursor material obtained in the step S3 in a protective atmosphere to obtain a purified hard carbon material; and S5, high-temperature carbon coating: carrying out high-temperature carbon coating on the surface of the purified hard carbon material obtained in the step S4 to obtain the surface-coated hard carbon negative electrode material. The preparation method has the characteristics of greenness, environmental protection, excellent electrochemical performance and good processability.

Disclosed is a method for manufacturing a dry electrode. The method allows determination of the micro-fibrilization degree of a binder resin from the crystallinity of the binder resin. Based on this, the processing conditions of mixed powder for electrode or an electrode film may be controlled. In this manner, it is possible to check and control the processing conditions easily and efficiently. In addition, the method for manufacturing a dry electrode includes a kneading step using a kneader under a low speed and high temperature and pulverization step. Therefore, there is no problem of blocking of a flow path caused by aggregation of the ingredients, which is favorable to mass production.

The present technology relates to a method of manufacturing an electrode for a secondary battery. Aince an electrode is manufactured using an insulating composition including an aqueous binder dispersed in a non-aqueous solvent, the wet adhesion of an insulating layer can be increased, and the gelation between an electrode slurry and the insulating composition, which is caused by using different types of binders, can also be prevented.

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.

This case involves a base film for a composite current collector based on SiO2 nanocomposite modification and its preparation method. The present invention forms modified auxiliary particles by synergistically modifying nano-SiO2 with aluminum hypophosphite, montmorillonite, etc., and extrudes them together with PET masterbatch. At the same time, a modified coating containing nano-SiO2 is coated on the surface of the base film, which significantly improves the mechanical properties, thermal stability and flame retardancy of the base film.