1163 results about "Aluminium foil" patented technology

The invention relates to a high-performance lithium ion battery. According to the battery, an electrode material is subjected to a nano-composite treatment of grapheme and polyaniline; an anode current collector comprises aluminium foil; a cathode current collector comprises copper foil; a conductive agent comprises superconducting carbon black, conductive graphite or acetylene black; a binding agent comprises styrene butadiene rubber, carboxymethylcellulose sodium, polytetrafluoroethylene, polyvinylidene difluoride or hydroxy propyl methylcellulose; a electrolyte comprises liquid electrolyte or a polymer electrolyte containing a conductive polymer, a nano-material, or a mixture comprising the conductive polymer and the nano-material; a membrane is subjected to a high temperature resistant insulation coating treatment, or directly adopts a high temperature resistant insulating porous polymer matrix. A preparation process for the high-performance lithium ion battery comprises: material preparing, coating, drying, rolling, slicing, coil winding or sheet stacking, assembling, liquid injecting, formation and capacity distributing. The lithium ion battery provided by the present invention has characteristics of excellent charge and discharge performance at the large rate, small capacity fading, good heat stability, good safety performance and long electrode cycle life, and can be widely applicable for the fields of electric bicycles, electric motorcycles, electric cars and the like.

The invention discloses a making method of titanium alloy/TiAl composite board, which is characterized by the following: overlapping A (titanium foil) and C (aluminium foil); placing at least one layer B (titanium or titanium alloy foil, titanium or titanium alloy board) on the upper and lower surfaces of overlapped layer or among overlapping layer; setting adjacent layer C to B; adopting three layers or more of A or B as the most outer layer; jacketing; rolling under 20-750 deg.c and 750-1300 deg.c.

The invention discloses a method for comprehensively recycling waste lithium ion batteries, and belongs to the field of recycling of regeneration resource. The method comprises the following steps: a, performing discharging processing on waste lithium ion batteries; b, fragmenting waste lithium ion batteries into sheets with a diameter of 10-20 mm in a closed shearing-type crusher, and spraying during fragmentation to dissolve lithium hexafluorophosphate in the waste lithium ion batteries into a spraying solution; c, peeling carbon powder on the surface of aluminium foils through stirring, dissolving electrolyte into the spraying solution, and recovering carbon powder; d, sending the sheets into a sodium hydroxide solution, peeling lithium cobalt oxide powder on the surface of aluminium foils through stirring, and recovering lithium cobalt oxide powder; e, cleaning the sheets, and recovering lithium cobalt oxide powder; and f, separating and recovering plastic and a copper-aluminium mixture. The method realizes recovery of carbon powder, lithium cobalt oxide powder, the copper-aluminium mixture and plastic through a simple environment-friendly process, and has certain economic benefit and social benefit.

The invention discloses a lithium ion battery with superhigh multiplying power, which comprises a positive plate, a negative plate, a membrane, an electrolyte solution, a plate lug and a packing shell. The positive plate is manufactured by coating the mixed slurry of a positive active material, a conducting agent and a cementing agent on both sides of an aluminium foil; the negative plate is manufactured by coating the mixed slurry of a negative active material, the conducting agent and the cementing agent on both sides of a copper foil; and the electrolyte solution is a mixed solution of lithium and an organic solvent. The lithium ion battery is capable of discharging continually at a superhigh multiplying power and the discharge multiplying power can reach 35C-50C. The discharge capacity of the discharge multiplying power at 35C, 40C, 45C, 50C can respectively reach 96.3 percent, 95.6 percent, 95.1 percent and 94.5 percent of the discharge capacity at 1C.

The invention belongs to an aluminum alloy material and manufacture technology of aluminum foils, in particular to an aluminum alloy material and a manufacturing method for dual-zero aluminium foils. The aluminum alloy material comprises the following components in percentage by weight: 0.2 to 0.35 percent of Si, 0.70 to 0.90 percent of Fe, 0.10 percent of Cu, 0.05 percent of Mn, 0.05 percent of Mg, 0.05 percent of Cr, 0.10 percent of Zn, 0.05 percent of Ti, and the balance of Al; and the components are smelted into an alloy. The manufacturing method orderly comprises the following steps: smelting the components into the alloy; carrying out casting and rolling on the alloy; carrying out cold rolling, intermediate annealing and second cold rolling on the rolled alloy; carrying out aluminum foil rolling; and carrying out final annealing on the finished product. The dual-zero aluminium foil product prepared from the materials by the method integrates the respective advantages of an alloy 1235 and an alloy 8011, has a few pinhole, high surface quality and good rolling stability, and can effectively improve the production efficiency and finished product ratio. The finished product quality and the rolling performance can be comparable with those of the hot-rolled aluminum-foil sheet.

The invention discloses a modulation method for shape morphing of a hole of an anodic aluminum oxide template, which comprises the following steps: I. removing grease and dirt of the surface of annealing-treated or untreated aluminium foil, and then carrying out electrochemical polishing treatment on the aluminium foil for later use; II. forming pit patterns on the surface of the aluminium foil by adopting an electrochemical oxidation method or a hard template mechanical pitting method; and III. carrying out noncontinuous oxidation and chambering on the aluminium foil the surface of which is provided with the pit patterns in an acid electrolyte to form various three-dimensional morphing-type aluminum oxide nanopore array structures by the combination control of electrolyte composition, electrolyte temperature, oxidation voltage, oxidation and chambering frequency and oxidation and chambering time. The modulation method uses existing equipment, has simple implementation and can manufacture various three-dimensional morphing shape-adjustable porous anodic aluminum oxide templates in manner of low cost and big area.

The invention relates an environmental protection laser transferred composite aluminum foil paper and the preparing technique, mainly solving the problems of the environment pollution and complicated technique caused by separant coating and laser layer protection coating of the existing commonly used solvent laser transferred composite aluminum foil paper. Its mixing proportion (by weight) of the raw materials is: water soluble amino resin 1-20 (or water soluble polyurethane resin 1-30, or water soluble alcohol acid resin 1-30, or water soluble acrylate resin 1-40, or cellulose resin 1-20), assistant 1-10, pigment 0-10, auxiliary solvent 1-30, and water 30-80, or their arbitrary combination, through synthesizing and wet-dispersing to mix into a water laser transfer coating, coating the transfer coating on a carrier thin film, drying, cross-linking curing, laser-mould pressing, and aluminizing to obtain the laser composite aluminum foil paper. It has the characters of improving environmental protection performance, simplifying producing process, saving energy sources, reducing production cost, stable production quality, etc.

The invention discloses a preparation method of a fluorine-containing acrylic acid super-hydrophobic coating. The fluorine-containing acrylic acid super-hydrophobic coating disclosed by the invention is prepared from the following raw materials in weight percentage: 35-80% of fluorine-containing acrylic acid super-hydrophobic resin solution, 5-45% of silicon dioxide nanoparticle, 1-10% of curing agent, and 0-10% of auxiliaries. The prepared super-hydrophobic coating has good super-hydrophobic performance and other application performances and is particularly applied to anti-corrosion and waterproof occasions on the surfaces of air conditioner aluminium foils; related products imported from the abroad in the current market can be replaced; the fluorine-containing acrylic acid super-hydrophobic coating disclosed by the invention is very wide in application prospect and potential.

The invention provides an air insulating structure of vacuum insulation panel, which is formed by composite material. The composite material does not contain aluminium foil layer; therefore, the heat bridge effect of seal edge during heat seal is avoided. The packaging method of the air insulating structure comprises the following steps of: folding a single piece of composite material to form a bag shaped air insulating structure having a size consistent with that of adiabatic core material according to the specification of the core material and form three seal edges; sealing part of sealing edges with heat, and keeping an opening for placing the adiabatic core material inside; filling the adiabatic core material in the air insulating structure, performing heat seal on the remained opening and keeping a vacuum pumping opening; and placing the air insulating structure, which is filled with the adiabatic core material and has a vacuum pumping opening, in a vacuum room and pumping to produce vacuum, and performing heat seal on the preserved vacuum pumping opening to form a vacuum thermal insulation panel. The air insulating structure has three seal edges, which are fewer than those of the conventional method; therefore, the integral heat bridge effect is reduced, the operation is simple, the appearance planeness of the vacuum insulation panel is improved, and the fold and air leakage of the air insulating structure in convention manufacturing process are avoided.

The invention provides a vacuum hot-rolled composite method of a titanium alloy plate and a stainless steel plate, which relates to a composite method for the titanium alloy plate and the stainless steel plate. Aiming at the problems that intense mixing of liquid metal and high welding stress are generated during the melt welding of the titanium alloy plate and the stainless steel plate, the contradiction between the diffusion and the controlling of volume fraction of compounds in connection interface metals is boosted to ensure the connection during the vacuum diffusion welding and the explosion weld joint is difficult to be applied to high-temperature and corrosive temperature, the method is characterized in that the stainless steel plate (1) and the titanium alloy plate (2) are used; furthermore, a copper foil or aluminium foil (3) is used; the surfaces of the two plates are milled flatly and the copper foil or the aluminium foil (3) is laminated and fix between the two plates, so as form a specimen; the specimen is arranged in a vacuum loading chamber (5); when the vacuum degree in a vacuum heating furnace (6) is (1-3)*10<-3> Pa and the temperature is 600-1100 DEG C, the specimen is delivered into the vacuum heating furnace for heating and heat preservation, and then welded by a roller (7) and cooled. The method of the invention has small welding stress, can control the volume fraction of compounds in the metals with high hardness and large brittleness; furthermore, the weld joint can be applied to the high-temperature and corrosive environment.

The invention relates to a double sticky tape for a lithium battery. The double sticky tape comprises a first sealed hot-melting pressure-sensitive adhesive layer, a basic film layer, a second sealed hot-melting pressure-sensitive adhesive layer, a normal temperature cohesion-less sealed adhesive layer, and a two-sided silicon-free release film layer, which are sequentially connected from top to bottom, wherein one side of the double sticky tape for the lithium battery has the cohesiveness to an aluminium foil and a polyethylene film at normal temperature, and the other side is free of cohesiveness to the polyethylene side when the temperature is 80 DEG C or below, so that the double sticky tape meets the requirement on production technology of the lithium battery; the adhesive layers of the double sticky tape are free of release agent and other impurities, so that the purity of the adhesive layers can be kept; when the adhesive layers are immersed in electrolyte, the double sticky tape is still high in stability, good in corrosion resistance against the electrolyte and free of electrochemical reaction, so that the performance of the lithium battery can be maintained, and the service life of the lithium battery can be prolonged.

A stable and universal process for preparing the laser thermoprinted electrochemical aluminium foil includes mixing parting material, assistant and cosolvent to obtaining the parting material, preparing color material from isocyanate, cellulose resin, diallyl titanate resin, pigment, assistant, mixed solvent and resin, preparing cementing material from acrylic resin, cellulose resin, ethylene-vinyl acetate resin, filler, pigment, assistant, and mixed solvent, sequentially coating them on PET carrier film, laser die pressing and vacuum aluminizing.

The invention provides a preparation method for a three-dimensional carbon nanotube/nitrogen-doped graphene/sulfur electrode slice. The preparation method comprises the following steps of (1) adding the carbon nanotube, graphite oxide and polyacrylonitrile to N-methyl pyrrolidone, performing an ultrasonic reaction, coating an aluminium foil with mixed paste, and performing vacuum drying to obtain the electrode slice; (2) putting the obtained electrode slice into a muffle furnace under ammonia gas protection, heating to 400-500 DEG C, and naturally cooling; and (3) enabling the electrode slice obtained in the step (2) to be fully inserted into a Na2S2O3 solution, and slowly adding hydrochloric acid to the solution in a dropwise manner until the PH value of the solution reaches 6.5-7.5, taking out the electrode slice, and drying the electrode slice to obtain a positive plate. The electrode slice prepared by the invention can be directly used for the positive electrode of a lithium-sulfur battery without requiring a conductive agent and a binder, so that the cost of the electrode is greatly lowered.

The aluminum foil base material producing process includes the following steps: smelting aluminum alloy in a smelting furnace, casting and rolling in a double roller continuous casting and rolling to produce blank material of 5.0-10.0 mm thickness, cold rolling, heat treatment, finishing, etc. The aluminum foil base material thus produced has excellent rolling performance, high surface quality, excellent internal structure, well dispersed intermetallic compound, and capacity of being rolled to thickness smaller than 0.01 mm while maintaining less pin holes.

The invention relates to an aluminium alloy foil for a lithium ion battery positive current collector and a manufacturing method thereof. The aluminium alloy foil comprises 0.1-0.7wt% of Fe, 1.1-1.6wt% of Mn, less than 1.8wt% of Fe+Mn, 0.1-0.3wt% of Si, less than 0.02wt% of Ti, less than 0.004wt% of B, and the balance consisting of Al and inevitable impurities. The manufacturing method comprises conducting alloy smelting, melt purification, casting, carrying out face milling and uniformization treatment on keelblook, conducting hot rolling and cold rolling, conducting intermediate annealing and aluminium foil rolling to obtain a hard aluminium foil with the thickness of 5-30 mum, wherein two-stage uniformization system at high temperature and low temperature can be used, the corresponding intermediate annealing temperature of the cold-rolled sheet is 300-340 DEG C, and the temperature is kept for 1-25 h; or single-stage uniformization system at high temperature is used, the corresponding intermediate annealing temperature of the cold-rolled sheet is 340-400 DEG C, and the temperature is kept for 1-40 h. According to the invention, the resistivity is reduced while the high intensity is guaranteed.

The invention discloses a high rate lithium iron phosphate cell and a preparation method thereof. The method comprises steps of preparation of an anode slurry and a cathode slurry, design of an anode sheet and a cathode sheet and design of cell safety, and aims to improve rate performance of a lithium iron phosphate cell and enhance cell safety. The preparation of the anode slurry and the cathode slurry employs a method combining ultrasonic mixing and mechanical stirring to enhance slurry disperse effect. The anode is prepared by pulping a lithium iron phosphate active material, a conductive agent and a binder according to a certain ratio and coating on an aluminium foil. The cathode is prepared by pulping graphite (or intermediate phase carbon microballoon), a conductive agent and butadiene styrene rubber (SBR) according to a certain ratio and coating on a copper foil. The anode and the cathode are prepared into a cylinder cell; an electrical core is assembled under an atmosphere protection environment; and a cap deflation apparatus is used to enhance safety of the cell. The lithium ion cell of the invention has good safety and can realize high rate 30 C continuous discharge.

The invention provides a forming method of battery shell which is charactered in that: a forming sheet (S), which includes a resin film layer as an outside layer, a resin film layer as an inner layer and an aluminium foil layer between two film layers, is punch formed to required shape by a punch forming mould composed of a die (2), a former block (1) and a crease-resist pressure pad component (5). According with the forming method, in a deep pulling/processing process that punch forming is realized by the forming sheet with special lamination structure used as forming material, the crease-resist pressure pad pressure generated by the crease-resist pressure pad can be adjusted suitably according with forming shape size, deepness also likes. Consequently, more deep process can be processed easily and suitable range of forming shape is enlarged, and a deep pulling process without crease is processed.

A laminated adhesive aluminium foil band is composed of plastic film layer, aluminium foil layer, central adhesive layer and adhesive bottom layer. Its preparing process includes such steps as coating adhesive on top surface of plastic film, attaching aluminium foil to it, and coating adhesive on the bottom surface of aluminium foil. Its advantages are high anticorrosion performance, adhesion and tension strength, and easily tearing off.

The invention relates to an electrochemical polishing method for the high purity aluminium under ultrasonic agitation, which belongs to the fields of the material chemistry and the electrochemistry. The electrochemical polishing method under the ultrasonic agitation comprises the following steps: high purity aluminium foil is added in absolute ethyl alcohol, so as to be cleaned with deionized water and through ultrasonic oscillations, and the natural oxide film in sodium hydroxide is removed; the aluminium foil after being pretreated is used as an anode, the platinum sheet is used as the cathode, the reference electrode is saturated calomel electrode, and the electropolishing solution is the mixed liquor composed of absolute ethyl alcohol and perchloric acid; the electrolysis vessel is positioned in an ultrasonic wave cleaner, and electrochemical polishing is performed on a constant potential rectifier. The self-organizing structure with nanoscale stripe shape is formed on the aluminium surface, the structure is observed by adopting the atomic force microscopy, and the size of the stripe-shaped nanostructure changes under the ultrasonic agitation; the composition of the polishing surface is analyzed through the Raman spectrum and the X-ray diffraction, so as to indicate that the composition of the polishing surface is amorphous aluminum oxide.

The invention provides an electrolyte used for treating an aluminium foil in an aluminium electrolytic capacitor. A surfactant used for reducing surface tension of the electrolyte and improving infiltration of solution on the surface of the aluminium foil is added into the electrolyte, and is at least one of an anionic surfactant, a cationic surfactant, an ampholytic surfactant and a nonionic surfactant. The surfactant can obviously reduce the surface tension, improve the infiltration of the solution on the surface of the aluminium foil, and greatly improve the capacity of the electrolyte of reaching the surface of the aluminium foil to corrode hole walls and hole bottoms, so an oxidation film on the surface of the aluminium foil is fully repaired, and the leakage current and the reliability of the electrolytic capacitor are greatly improved. The electrolyte has the advantages of readily available raw materials and strong operability in the preparation process, and is suitable for large-scale technological improvement and promotion.

The invention provides an iron-phosphate-based lithium-ion battery positive plate and a preparation method thereof. The iron-phosphate-based lithium-ion battery positive plate comprises an anode current collector, iron-phosphate-based lithium-ion particles, conducting solvent and adhesive and is characterized in that the anode current collector is an aluminium foil which forms pores by corrosion, the grain diameter of the iron-phosphate-based lithium-ion particle is from nanometer to micron scale, and the adhesive is the mixture of organic conducting high polymer adhesive and the non-conducting high polymer adhesive. The iron-phosphate-based lithium-ion battery positive plate of the invention improves the bonding performance between an anode material and the anode current collector aluminium foil, improves pole piece conducting performance and improves the situation of uneven pole piece impedance.