797results 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.

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 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 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.

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.

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.

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 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.

The embodiment of the invention relates to a negative plate, a preparation method thereof and a battery, the negative plate comprises a current collector, and a first active material layer and a solid electrolyte layer which are arranged on at least one surface of the current collector, and the first active material layer is located between the current collector and the solid electrolyte layer; the first active material layer comprises a silicon-based material; the solid electrolyte layer comprises a three-dimensional network cross-linked product of polyethylene oxide and trimethylaluminum and inorganic lithium salt positioned in pores of the three-dimensional network cross-linked product. Therefore, the volume expansion of the first active material layer can be effectively inhibited through the solid electrolyte layer in the charging and discharging process, the stability of the SEI membrane is improved, the SEI membrane rich in lithium salt can be constructed, the desolvation of active ions is promoted, and the capacity, the cycling stability and the low-temperature performance of the battery can be further improved.

The non-aqueous electrolyte battery is excellent in high-temperature storage characteristics and load characteristics at low temperature. A non-aqueous electrolyte battery of the present invention includes a positive electrode, a negative electrode, a separator, and a non-aqueous electrolyte. The negative electrode includes a lithium layer, a lithium-aluminum alloy layer formed on a surface of the lithium layer, and a carbon layer on the lithium-aluminum alloy layer. The non-aqueous electrolyte battery of the present invention can be manufactured by a method for manufacturing a non-aqueous electrolyte battery that includes providing an aluminum layer on the surface of the lithium layer to obtain a laminate, forming the carbon layer on a surface of the aluminum layer to obtain a laminate for a negative electrode, and causing the lithium layer and the aluminum layer of the laminate for a negative electrode to react with each other to form the lithium-aluminum alloy layer.

The invention discloses a preparation method and application of a ternary pole piece with a base coat of lithium iron phosphate, and relates to the technical field of battery materials. The lithium iron phosphate slurry and the ternary material slurry are coated on the surface of the positive electrode base foil, so that the safety and the electrochemical performance of the pole piece are improved. The lithium iron phosphate and the ternary material are used as active materials, an active substance layer is formed on the surface of the positive electrode base foil, the lithium iron phosphate has a stable olivine structure, the structure is not easy to collapse and decompose at a high temperature, the lithium iron phosphate is coated on the surface of the ternary material, a protective layer with high thermal stability is constructed, heat is prevented from being quickly transferred into the ternary material, and the thermal stability of the ternary material is improved. The structure change of the ternary material at high temperature is delayed; the ternary material is heated to expand in the charging and discharging process, the lithium iron phosphate priming coat has certain elasticity and buffering performance, stress generated in the thermal expansion process of the ternary material can be absorbed and dispersed, and structural damage caused by thermal expansion is reduced.

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.

The invention provides a composite electrode pole piece and a preparation method and application thereof, and the preparation method comprises the following steps: coating the surface of at least one side of a current collector with electrode slurry to obtain an electrode slurry coating, and coating the surface of the electrode slurry coating with solid electrolyte slurry when the electrode slurry coating is not dry to obtain the composite electrode pole piece. And then drying and rolling to obtain the composite electrode plate. According to the preparation method, after the electrode slurry is coated, the solid electrolyte slurry is coated when the electrode slurry is not dry, and the solid electrolyte layer is obtained on the surface of the electrode coating, so that the problem of internal interface contact of the electrode plate is solved, the problem of external interface contact of the electrode plate is also solved, the impedance of the solid-state battery is reduced, and the service life of the solid-state battery is prolonged. And the rate and the cycle performance of the solid-state battery are improved.

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.

A coating step of coating a slurry obtained by dispersing an electrode material on a current collector foil in a solvent to obtain a coating film, and a drying step of drying the coating film while transporting the current collector foil on which the coating film is formed in a drying furnace, the coating film, three regions divided along the transport direction, a central portion disposed in the center of the width direction, and an end portion disposed on both sides of the central portion, respectively, a drying step drying each end portion of the coating film by a heat source of low energy density, drying the central portion of the coating film by a high energy density heat source, an electrode manufacturing method.

The invention discloses a high-conductivity sodium ion battery positive electrode material / organic conductive polymer composite material and a preparation method thereof, and the preparation method comprises the following steps: S1, preparation of a chain product: adding water into an organic conductive polymer monomer for dissolving, adjusting the pH value of the solution to be acidic, adding an oxidizing agent, and stirring to obtain the chain product; inducing an organic conductive polymer monomer to generate a polymerization reaction to form a chain product; s2, preparation of precursor slurry: adding a sodium source, an iron source and a sulfur source into the solution for forming the chain product, and fully dissolving to form uniform precursor slurry; s3, preparation of precursor powder: drying the precursor slurry to realize solid-liquid separation so as to obtain dried precursor powder; and S4, high-temperature sintering: calcining the precursor powder in a protective atmosphere, and naturally cooling to obtain the Na < 2 + x > Fe < 2-x > (SO4) 3 / organic conductive polymer composite positive electrode material. The preparation method has the characteristics of high electronic conductivity, low specific surface area, high compaction density and excellent electrochemical performance.

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.

Provided is a method for preparing a secondary battery including a battery cell. The secondary battery includes a negative electrode. The method includes: preparing a negative electrode slurry, coating the negative electrode slurry on the negative current collector, and then drying and compacting the negative electrode slurry to form a negative electrode material coating, thereby obtaining the negative electrode. Preparing the negative electrode slurry includes: dry blending a negative electrode active material, a conductive agent and a dispersant to obtain a dry blend; kneading the dry blend with a part of the first solvent to obtain a kneaded material; subjecting the kneaded material, the remaining part of the first solvent, the second solvent to a first wet blending to obtain a first wet blend; and subjecting the first wet blend, a thickener and a binder to a second wet blending to obtain the negative electrode slurry.

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.