621results about "Electroforming processes" patented technology

The invention discloses a component gradient iridium tantalum coating anode and a preparation method thereof, the component gradient iridium tantalum coating anode comprises a titanium-based bottom layer, a middle layer and a surface active layer structure with component gradient, and the middle layer and the active layer are both prepared through a thermal decomposition method. And the intermediate layer is prepared on the titanium substrate and is composed of TiO2 / Ta2O5 mixed oxide. The surface active layer is prepared on the outer side of the middle layer and comprises a plurality of layers of IrO2 / Ta2O5 oxide coatings with different iridium-tantalum proportions. Compared with a traditional uniform coating anode, the prepared component gradient iridium tantalum coating anode can relieve the stress concentration phenomenon and reduce coating cracking, the service life of the anode is remarkably prolonged, and the catalytic activity of the anode is remarkably improved; the modified carbon nano tube is added into the active layer precursor solution, so that the conductivity change caused by component gradient is improved, and the cell voltage of the component gradient iridium tantalum coating anode is effectively reduced; and moreover, the iridium content is lower, and the preparation cost of the electrode is reduced.

The invention discloses a copper foil production system and method.The copper foil production system comprises an electrolytic bath and a cathode roller arranged in the electrolytic bath and further comprises a partition anode module, a partition cooling module, a detection module and a control system; the partitioned anode module comprises a plurality of anode assemblies which are arranged along the axial direction of the cathode roller, and an electric control module which is respectively connected with each anode assembly; the subarea cooling module comprises a plurality of cooling structures which are arranged in the cathode roller and are in one-to-one correspondence with the anode subareas, and a cooling control module which is respectively connected with each cooling structure; the control system is electrically connected with the electric control module, the cooling control module and the detection module. According to the method, differentiated cooperative control of partition current and cooling can be intelligently executed according to the source and size of supersaturation degree deviation, so that rapid directional compensation is performed at any axial position, and the defects of response lag and extensive regulation and control in a traditional mode are effectively overcome.

The invention provides a preparation method of a porous copper foil with a regular polygonal hole array, which comprises the following steps of: grinding and polishing a titanium plate until the titanium plate is matte, punching holes with the regular polygonal hole array in the titanium plate by laser, finely trimming vertex angles of the regular polygonal holes by laser, and polishing and grinding the titanium plate to obtain the porous copper foil with the regular polygonal hole array. The method comprises the following steps: preparing a titanium plate, cleaning with pure water and alcohol to obtain a clean titanium plate, preparing a copper sulfate electrolyte, adding a proper amount of a brightener, a wetting agent and a high resistance agent into the electrolyte, mixing, pouring the mixed solution into an electrolytic bath, putting the clean titanium plate and a carbon plate into the electrolytic bath, and carrying out electrolytic foil generation by taking the titanium plate as a cathode and the carbon plate as an anode; and after foil generation is finished, the copper foil is stripped from the surface of the titanium plate, and the porous copper foil with the regular polygon holes is obtained. According to the method, the holes of the titanium plate are the regular polygon holes, and the vertex angles of the regular polygon holes are finely trimmed, so that the copper foil of the electrolytic raw foil is not easy to adhere to the titanium plate during stripping, and the production yield of the copper foil is further improved.

The invention discloses a preparation method of a 3-micron ultrathin lithium battery copper foil. The preparation method comprises the following steps: preparing a copper sulfate electrolyte; a wetting agent, a brightening agent and a high resistance agent are added into the copper sulfate electrolyte, the high resistance agent is at least one of thiazolidinethione, polyethyleneimine, 2-mercaptobenzimidazole and ethylene thiourea, and a mixed additive is formed; polishing and grinding a cathode roller by adopting a flying wing wheel, and carrying out electrolytic treatment on the mixed additive through the polished and ground cathode roller to obtain a first-stage copper foil; and the first-stage copper foil is placed in a nitrogen furnace to be subjected to annealing treatment, and the 3-micron ultrathin lithium battery copper foil is obtained. The invention aims to solve the technical problems that in the prior art, edge tearing, foil breaking, warping, dark appearance oxidation and the like are prone to occurring in the production process of the ultrathin copper foil, the tensile strength and the ductility are difficult to consider at the same time, and stable mass production of the 3-micron copper foil is still difficult.

The invention relates to the technical field of electrolytic copper foil processing, and particularly provides a method for reducing the rough surface roughness of an HVLP copper foil by using a composite additive, which comprises the following steps: step (1): enabling the composite additive to flow into a high-level tank through an additive flow pump, uniformly mixing the composite additive with a copper sulfate electrolyte, and enabling the mixture to flow into a crude foil machine; step (2), then adjusting process parameters of a crude foil machine, including current and line speed of a cathode roller; (3) foil generation and foil drawing are carried out; the composite additive comprises one or two of gelatin and collagen. One or more composite additives composed of gelatin, collagen, sodium dithiodipropane sulfonate, N, N-dimethyl-dithioformamide sodium propanesulfonate, 3-sulfydryl-1-sodium propane sulfonate, hydroxyethyl cellulose and polyethylene glycol are added into the raw foil electrolyte, so that the copper electrodeposition reaction potential can be effectively changed; and uniform and compact copper crystallization peaks are obtained, the rough surface roughness of the raw foil is reduced, and the uniformity of a plating layer is improved.

The invention discloses an Archimedes spiral anode rotary scanning electroforming device, and belongs to the technical field of electroforming. The Archimedes spiral anode is made of platinum with the width of 50 micrometers and the purity of 99.999%, the Archimedes spiral anode is embedded in the center of a line anode carrying plate, and the polar coordinate equation is that during electroforming, a cathode carrying plate rotates along with a rotating shaft at the rotating speed of 0.1-20 r / s, and uniform coverage of a cathode global electric field is achieved; the device is provided with an adjustable gap of 0.5-4 mm between two electrodes, a liquid supply channel is formed in the center of a wire anode carrying disc, the carrying disc is parallel to a cathode carrying plate, and the distance between the carrying disc and the cathode carrying plate is adjustable. The spiral line anode structure can solve the problem that a traditional radial anode is uneven in electric field; through the flow-rotating speed synergistic effect, the rotating centrifugal force of the cathode can be counteracted, and the interelectrode ion concentration is kept stable; the continuous helical structure can also eliminate non-effective working time. According to the method, the edge effect and the bubble defect are effectively restrained, the deposition uniformity, the electroforming efficiency and the deposition layer performance are improved, and the method is suitable for high-precision electroforming manufacturing of the chip type disc-shaped cathode substrate.

This invention relates to a method for surface roughening of high-end copper foil for electronic circuits, comprising the following steps: sequentially performing acid washing, roughening, blackening, ashing, passivation, and coupling agent coating on raw copper foil, with water washing steps interspersed between these steps, and finally drying and winding. The method is characterized in that the roughening step uses an alkaline plating solution containing copper pyrophosphate. This invention provides an alkaline plating solution for alkaline roughening of raw copper foil, generating grains with lower roughness on the already extremely thin surface of high-end copper foil. The grain size is between 0.02 and 0.1 micrometers. After deposition on the raw foil, the surface roughness of the finished foil increases by approximately 0.2 to 0.3 micrometers, ensuring that the surface roughness of the final product meets the requirements of high-end copper foil while maintaining peel strength.

The invention discloses a preparation method of a porous copper foil based on a hydrogel template and the porous copper fores.The method comprises the steps that firstly, a hydrogel solution is applied to the surface of a cathode roller in a spraying mode, and a hydrogel shielding point array is formed by means of the self-polymerization characteristic of the hydrogel solution; secondly, performing electrolysis operation by taking a cathode roller area outside the shielding point as a deposition site to prepare a composite copper foil mingled with the hydrogel shielding point; and then, stripping the composite copper foil from the cathode roller, placing the composite copper foil in an alkaline solution for ultrasonic treatment for 0.5-5 minutes, so that the hydrogel shielding point is swelled and then falls off through ultrasonic oscillation, and a pure porous copper foil is obtained. And finally, performing surface treatment on the porous copper foil by adopting a passivation solution to improve the stability of the porous copper foil. According to the method, accurate regulation and control of the porous structure are achieved through the hydrogel template, the preparation process is green and efficient, and the obtained porous copper foil is uniform in pore distribution, large in specific surface area and good in mechanical property.

A negative electrode current collector according to the present invention is 6-10 µm thick and has work-hardening exponent n of 0.10-0.25 according to the following formula 1. [Formula 1] σ = K × εn where σ is true stress, K is a strength coefficient, ε is true strain, and n is a work-hardening exponent.

The invention belongs to the technical field of copper foils, and particularly relates to a preparation method of a copper foil, the copper foil and a raw foil system.The preparation method comprises the steps of raw foil electrolysis, roughening treatment and curing treatment.The raw foil electrolysis is that multi-step electro-deposition is conducted in an electrolyte to form the copper foil, the multi-step electrodeposition comprises at least two deposition stages adopting different current densities and different copper ion concentrations, and in the deposition stage process, a composite additive comprising at least two different molecular weight components is added into an electrolyte; the roughening treatment comprises at least two roughening stages, and the concentration of copper ions in the electrolyte in the later roughening stage is lower than the concentration of copper ions in the electrolyte in the previous roughening stage; the curing treatment comprises at least two curing stages, and the concentration of copper ions in the electrolyte in the later curing stage is lower than that of copper ions in the electrolyte in the previous curing stage. According to the method, the elongation of the super-thick electrolytic copper foil at high temperature can be improved, meanwhile, the low surface roughness of the super-thick electrolytic copper foil is maintained, and the high peel strength of the super-thick electrolytic copper foil is guaranteed.

The invention relates to the technical field of electrolytic copper foil production and copper dissolution, in particular to an efficient copper dissolution system based on the Internet of Things, which is provided with a copper dissolution module, a feature acquisition module, an unbalance pre-analysis module, an area identification module and a copper dissolution regulation and control module, an imbalance risk coefficient is determined through an imbalance pre-analysis module according to the comparison condition of surface bubble parameters of all monitoring areas so as to judge whether the risk of reaction environment imbalance exists or not, and reaction similar parameters are determined through an area identification module according to the comparison condition of bubble dynamic characteristic curves of all the monitoring areas. And determining a copper dissolving parameter adjustment mode based on the position distribution of each unbalance risk monitoring sub-region through a copper dissolving regulation and control module. The reaction process in the copper dissolving tank is sensed in real time, the adjustment mode of the copper dissolving parameters is adaptively determined according to the dynamic change of the reaction process, and the reliability and efficiency of the efficient copper dissolving system are improved.

The invention relates to the technical field of copper foil surface treatment, in particular to a copper foil and a preparation method and application thereof. The copper foil comprises an electrolytic copper raw foil, and a roughening treatment layer, a catechol-based polymer layer and a silane coupling agent layer which are sequentially laminated on the rough surface of the electrolytic copper raw foil. According to the copper foil, the catechol-based polymer layer is introduced between the roughening treatment layer and the silane coupling agent layer, the catechol-based polymer layer contains rich functional groups such as hydroxyl and amino, the number of attachment sites of a silane coupling agent on the surface of the copper foil is increased, and then the binding force of the silane coupling agent and the copper foil is increased; meanwhile, rich functional groups can also improve the binding force between the copper foil and various base materials, so that the copper foil has higher peel strength under the condition of keeping lower roughness during application.

The present invention relates to an electrode for electrolysis, a laminate, a wound body, an electrolyzer, a method for producing an electrolyzer, a method for renewing an electrode, a method for renewing a laminate, and a method for producing a wound body. An electrode for electrolysis according to one aspect of the present invention has a mass per unit area of 48 mg / cm2 or less and a force applied per unit mass-unit area of 0.08 N / mg·cm2 or more.

The application provides a secondary battery, a preparation method thereof and an electric device. The secondary battery comprises a copper foil, the copper foil comprises copper grains with different particle sizes, the copper grains comprise copper grains with a particle size less than or equal to 0.5 microns and copper grains with a particle size greater than 0.5 microns, wherein the proportion of the number of the copper grains with a particle size less than or equal to 0.5 microns in the total number of the copper grains is 70% to 95%, and the proportion of the number of the copper grains with a particle size greater than 0.5 microns in the total number of the copper grains is 5% to 30%. The current collector has excellent mechanical strength and plasticity.

The invention relates to the technical field of gelatin adding, in particular to an electrolytic copper foil gelatin adding system based on a centrifugal pump. A data acquisition unit; the rotating speed setting unit is used for determining the rotating speed of the centrifugal pump according to the gelatin state and the comprehensive evaluation coefficient or the comparison temperature value, and determining whether to adjust the rotating speed of the centrifugal pump or not according to the fluctuation degree of the flow in the pipe; the opening degree setting unit is used for determining whether to adjust the electric adjusting valve or not based on the rotating speed adjusting coefficient and adjusting the opening degree of the electric adjusting valve according to the comprehensive evaluation value and the flow in the pipe when the electric adjusting valve is adjusted; and the stirring setting unit is used for determining whether to stir the gelatin solution in the gelatin tank or not according to the pressure in the pipe under the condition that the setting of the opening degree is completed, and determining the stirring duration according to the proportion of the abnormal sub-regions during stirring. According to the invention, the mixing uniformity of gelatin and electrolyte can be improved.

The invention relates to the field of solid-state batteries, in particular to an electrolyte and a preparation method of an electrolytic copper foil for a solid-state battery. The electrolyte comprises the following components by concentration: 80 to 100 g / L of Cu < 2 + >, 105 to 120 g / L of sulfuric acid, 5 to 25 g / L of gelatin, 10 to 40 g / L of isothiourea propanesulfonic acid inner salt, 3 to 15 g / L of diethyl propyne amine, 5 to 35 g / L of (R)-4-benzyl thiazoline-2-thioketone, 10 to 30 mg / L of Cl <->, and the balance of water. By adopting a specific formula and process, the tensile strength of the prepared copper foil reaches 400-500MPa, the elongation is greater than or equal to 5.0%, the roughness Ra is greater than or equal to 0.45 mu m, the roughness Rz is greater than or equal to 2.50 mu m, and the specific surface area is greater than 0.36 m < 2 > / g; the problems that in the prior art, a copper foil is prone to deformation and breakage and high in interface impedance are solved, and therefore the charge-discharge efficiency and the cycle performance of the solid-state battery are improved.

The invention provides a secondary battery and an electric device. The secondary battery comprises a copper foil, the copper foil comprises copper crystal grains with different particle sizes, the copper crystal grains comprise copper crystal grains with the particle size smaller than or equal to 0.5 mu m and copper crystal grains with the particle size larger than 0.5 mu m, the number proportion of the copper crystal grains with the particle size larger than 0.5 mu m in the total number of the copper crystal grains is smaller than 30%, and the number proportion of the copper crystal grains with the particle size larger than 0.5 mu m is smaller than 30%. And the amount of the copper grains with the grain sizes larger than 0.5 mu m and smaller than 4 mu m accounts for 5%-20% of the total amount of the copper grains.

The invention discloses a device and method for improving netlike grains on the roller surface of a cathode roller, and relates to the technical field of metal surface treatment, and the device comprises a roller arranged on the surface of a cathode roller main body; the gears are coaxially arranged on two sides of the roller and synchronously rotate along with the roller; the clamping insertion block is movably arranged above the gear; the special-shaped push block is fixed at the bottom end of the second oil cylinder; and the circular balls are arranged in the protective shell at equal intervals and roll and displace under the thrust of the special-shaped push block. The characteristic that the friction force can be changed before and after the cathode roller body is polished is ingeniously utilized, the idler wheels interacting through friction transmission are arranged on the surface of the cathode roller body in a contact mode, and the transmission effect of the idler wheels is dominated by the friction coefficient of the contact face; the rolling wheel does not rotate any more and drives the milligram energy actuator to be away from the cathode roller body, the cathode roller body is not polished any more, excessive polishing is prevented, and the risk that net-shaped lines are generated on the surface is reduced.

The application provides a method for reducing impurities in electrolyte based on a copper foil production device, comprising: identifying a pressure fluctuation abnormal area from a pressure time-frequency distribution map as an input of a pre-constructed high deposition area distribution model, outputting a position distribution of the high deposition area, and determining a potential high-risk node of impurity deposition in a pipeline; deploying a filtering device at the potential high-risk node of impurity deposition according to the determined potential high-risk node of impurity deposition in the pipeline, separating impurity particle sizes through a multi-stage filtering structure built in the filtering device, directionally collecting different particle size impurities separated, and obtaining impurity data.

The application provides a kind of electric field period regulation's biomimetic collagen film material and its preparation method and application, it is related to organic polymer compound processing field, also it is related to medical material technical field.Collagen solution is deposited on electrode in the form of electrolysis in this application, and collagen is formed into film, surfactant and ionic strength regulator are added in collagen solution, surfactant stabilizes collagen dispersion, and film is easy to peel off; Moderate ionic strength regulator is compatible with pH value, reduces film-electrode electrostatic adsorption, and enhances film strength; Further, high concentration collagen solution is concentrated by specific hollow fiber ultrafiltration membrane to electrolyte, collagen is formed into uniform film, and it is ensured that collagen film obtained in continuous film forming process is uniform; By periodically switching electrode polarity, negative electric collagen is deposited into film, and positive switching is used to effectively remove film by electrostatic repulsion; Interface regulator and physical auxiliary are combined to realize deposition-film removal continuity; And the obtained collagen film is dense and uniform, and has high strength.

An object of the present invention is to provide a method and system of electroplating using an anode that can be prepared relatively easily without the need for ancillary equipment or anolyte management, and without the need for expensive metals or special metals. The present invention relates to a method of electroplating an article with metal, the method comprising the steps of: allowing a current to flow in a plating bath containing ions of the metal and an organic compound additive, wherein the plating bath comprises the article as a cathode and a conductive base material as an anode, a part of a surface of the conductive base material is covered with an insulating material, and a remaining part is exposed, and a current flowing portion is dispersedly present in the anode.

The invention relates to a metal mask supported by a glass substrate for manufacturing an organic light emitting diode display. The mask includes a glass substrate located only outside the display area, an open-cell metal layer for providing structural stability, and forming apertures for material deposition in the display area. The perforated metal layer can be formed by methods such as electroforming, sputtering, chemical vapor deposition, evaporation or atomic layer deposition, and the used metal comprises a material with a low thermal expansion coefficient, such as invar steel, super invar steel, kovar alloy, 42 alloy, nickel, tungsten, molybdenum, tantalum or rhenium. The mask supports two structural forms: a fine metal mask and an open metal mask which are respectively used for evaporation of red, green and blue sub-pixels and a common layer. The method can be used for batch processing of a plurality of micro organic light-emitting diode display substrates, and can also be used for full-coverage processing of a single active matrix organic light-emitting diode display substrate.

The invention discloses a copper foil post-processing system, and relates to the technical field of copper foil production, the copper foil post-processing system comprises a plurality of processing units arranged in sequence, and each processing unit is provided with an electrolyte tank and at least one conductive roller matched with the electrolyte tank; each processing unit is further provided with a power pack, the positive electrode of the power pack is electrically connected with the electrolyte tank, the negative electrode of the power pack is electrically connected with the middle copper bar, and the middle copper bar is electrically connected with the conductive roller. According to the technical scheme, the cathodes of all the power packs are electrically connected through the middle copper bar, and then the conductive rollers are electrically connected with the middle copper bar, so that the cathodes of all the power packs are combined together firstly, the cathodes of the electrolyte tanks are combined together firstly, and the voltage between the cathodes of all the electrolyte tanks is zero; and the anodes of the electrolyte tanks are independent, so that the effects that the current among the plurality of electrolyte tanks is not mixed, and the electrolyte tanks are not mutually influenced are achieved.

The utility model relates to a stripping mechanism of a crude foil engine, which comprises an anode tank, a cathode tank, a stripping mechanism and a stripping mechanism, wherein an anode plate and electrolyte are arranged in the anode tank; the cathode roller is arranged in the cathode tank and is used as a cathode when copper sulfate is electrolyzed, copper ions in the anode tank are deposited, and copper foil is formed; the stripping device is arranged on one side of the cathode roller through a displacement adjusting support and used for stripping copper foil on the cathode roller. The stripping device comprises a stripping roller and a rolling supporting seat; the supporting roller is arranged obliquely above the cathode roller through a first fixing bracket; the passing roller is arranged on one side of the supporting roller through a second fixing support. The winding device is arranged on one side of the passing roller and used for winding the copper foil. According to the utility model, the oxidation speed of the cathode roller is slowed down, the service life and the stability of the crude foil engine are improved, the mass production efficiency of ultra-thick copper foils is improved, the surface quality of the copper foils is also improved, the production cost is reduced, and the adaptability of equipment and the simplicity and convenience of operation are enhanced.

The utility model provides an anode tank shielding plate, which comprises an integrally formed shielding plate body which is arranged on side plates on two sides of an anode tank, the counterbores are formed in the shielding plate body; the fixing pieces penetrate through the counterbores one by one, and the shielding plate body is attached and fixed to a side plate of the anode groove; the at least two overflow ports are symmetrically arranged on the shielding plate body; the overflow pipe is connected with the overflow port, penetrates through the side plate, extends to the outer side of the anode tank and is used for discharging liquid in the anode tank; wherein the cross section of the counterbore comprises a straight line section, a containing section and a protection section which are arranged in sequence, and the straight line section and the containing section are used for containing the fixing piece, so that the shielding plate body is convenient to install and position, and electrolyte crystals attached to the shielding plate body are convenient to clean.

Provided is a roughened copper foil capable of achieving both high adhesiveness with respect to a thermoplastic resin and exceptional high-frequency characteristics. The roughened copper foil has a roughened surface on at least one side thereof. In the roughened surface, the surface texture aspect ratio Str is 0.02-0.24, and the load area ratio Smr1 separating protruding peaks from a core portion is 1.0-15.0%. Str and Smr1 are values measured in compliance with ISO 25178 at a cutoff wavelength of 0.251 μm using an S-filter and at a cutoff wavelength of 4.5 μm using an L-filter.

The application discloses a water electroplating solution for a composite copper foil for a battery current collector, and the electroplating solution formula comprises the following mass concentration components: copper sulfate pentahydrate 140-180 g / L, sulfuric acid 80-120 g / L, brightener 4-16 g / L, anti-folding plating agent 50-100 mg / L, leveling agent 1-3 g / L, stabilizer 0.5-3 g / L, and grain refiner 5-10 g / L, and the rest is DI pure water. The copper foil obtained through water electroplating has a smooth and bright surface, low porosity, low copper layer stress, and good bonding force with a base film, and can be applied to a battery current collector material.

A method for forming a multi-component alloy plating film includes formation step of forming a multi-component alloy plating film by electrodeposition with use of a plating solution that includes a plurality of types of metal elements, an ionic liquid, and water, the multi-component alloy plating film containing the plurality of types of metal elements as principal components. The plating solution has a non-polar domain and a polar domain, the polar domain having a volume of not more than 10 when the non-polar domain has a volume of 1. With this configuration, the degree of flexibility of the types of metal elements to be used is increased and the composition is controlled, so that a multi-component alloy plating film is formed at a practical processing speed.

Provided is an electrolytic copper foil that is less likely to break. When the foil thickness of the electrolytic copper foil is t (unit: μm), the glossiness of the electrolytic deposition end surface, which is determined by irradiating light at an incident angle of 60° along the length direction with respect to the electrolytic deposition end surface, is Gs (unit: %), and the elongation, which is determined by stretching along the length direction, is E (unit: %), the foil thickness t is 10 or more and 20 or less, the glossiness Gs divided by the foil thickness t (Gs / t) is 10 or more and 40 or less, and the elongation E divided by the foil thickness t (E / t) is 0.9 or more and 1.8 or less.

One embodiment of the present disclosure provides a copper foil including a copper film having a matte surface and a shiny surface; and a protective layer disposed on the copper film, wherein the copper foil has a compressive elastic strain index of 10 to 30 GPa. The compressive elastic strain index is measured using a nano-indenter.