461 results about "Galvanic deposition" patented technology

The invention discloses a preparation method and application of a zinc-bromine flow battery positive electrode material, and belongs to the field of zinc-bromine flow batteries. The preparation method comprises the following steps: firstly, cleaning and activating a carbon-based three-dimensional conductive network substrate by adopting plasmas, performing oxygen / argon plasma etching, and performing chemical vapor deposition on carbon to prepare three-dimensional porous carbon; then growing a metal oxide nanocrystalline array on the three-dimensional porous carbon by a hydrothermal method, and carrying out ammonia gas calcination to convert the metal oxide nanocrystalline array into a metal nitride nanocrystalline array; then preparing an electro-deposition solution containing tin bismuth salt and an aniline-bromine source polymerization solution, and constructing Sn-Bi bimetallic nanoparticles and a polyaniline-bromine complex layer on the metal nitride nanocrystalline array / three-dimensional porous carbon precursor through electro-deposition and electro-polymerization in sequence to finally prepare the high-performance zinc-bromine battery positive electrode material. The positive electrode material has high conductivity, excellent Br2 / Br <-> catalytic activity and structural stability, and the coulombic efficiency, the voltage efficiency and the energy efficiency of the battery are remarkably improved.

The invention discloses a catalytic electrode which comprises a substrate, and an anti-corrosion layer and a sulfur-phobic layer which are sequentially attached to the substrate, the substrate is a blank foamed nickel substrate, the anti-corrosion layer is formed by dipping the foamed nickel substrate with a ferric salt solution, and the sulfur-phobic layer is formed by processing a precursor with a cobalt salt solution through electro-deposition. Accordingly, a corresponding preparation method is also established, a blank foamed nickel substrate is adopted, firstly, the foamed nickel substrate is subjected to dipping treatment with an iron salt solution to obtain a precursor with an anti-corrosion layer, and then the precursor is subjected to electro-deposition treatment with a cobalt salt solution to form the sulfur-phobic layer on the anti-corrosion layer. Wherein the anti-corrosion layer can isolate a high-sulfur environment and prevent the substrate from being corroded; the sulfur phobic layer may prevent sulfur products from depositing and passivating the electrode. The catalytic electrode provided by the invention solves the problems of sulfur reaction corrosion and passivation, shows excellent catalytic activity and stability, and can be used for catalyzing sulfur oxidation reaction for a long time. In conclusion, the method has the advantages of mild conditions, simple process, economy and practicability, and has obvious large-scale industrial production potential.

The present invention relates to the technical field of electrodeposition, and relates to a simulation method for flow field distribution and deposition morphology in ultrafast laser-assisted electrochemical deposition. The steps of the method comprise: constructing, in multiphysics simulation software, a two-dimensional axisymmetric multiphysics coupled field model for heat transfer, solid and fluid heat transfer, tertiary current distribution, and laminar flow; constructing a geometric model of a deposition cell and a substrate, and setting laser properties, material physical parameters, and electrodeposition properties in the multiphysics simulation software; constructing an ultrafast laser heat transfer model on the basis of a two-temperature equation; setting initial and boundary conditions of the ultrafast laser heat transfer model, and constructing an electrodeposition field; coupling the ultrafast laser heat transfer model with the electrodeposition field to construct an ultrafast laser-assisted electrochemical deposition model; delineating a grid; and performing calculation and analysis. In the present invention, ultrafast laser is incorporated to perform multiphysics coupling of a thermal field, a flow field, an electric field, etc., and a two-temperature equation and tertiary current distribution are incorporated to the model, thereby achieving the accuracy and comprehensiveness of prediction models.

The invention discloses a method for recovering rare earth and valuable metal from waste rare earth alloy by using ionic liquid, and belongs to the technical field of non-ferrous metal metallurgy. Comprising the following steps that (1) recycled waste rare earth alloy is smashed, and waste rare earth alloy powder is obtained; (2) the waste rare earth alloy powder is put into ionic liquid to be subjected to a leaching reaction, solid-liquid separation is conducted after leaching is completed, and solid rare earth salt and filtrate are obtained; and (3) the filtrate serves as electrolyte, an electrolytic deposition system is constructed for electrodeposition, and valuable metal is obtained. The recovery method also has the advantages of simple process, environmental friendliness, high purity of the regenerated electrolyte and stable performance, and has great popularization and application prospects.

The application discloses a high-performance stainless steel-based electrolytic water dual-function electrode and application thereof, and the electrode is prepared through the following steps: step 1, pretreating a stainless steel surface to remove impurities on the surface; step 2, placing the stainless steel obtained after the treatment in step 1 and a phosphorus source in an argon atmosphere under the condition of 350-450 DEG C, phosphorizing the stainless steel for 1-3 hours to obtain a phosphorized stainless steel electrode, wherein the linear distance between the phosphorus source and the stainless steel is kept at 5-10 cm; and step 3, placing the phosphorized stainless steel electrode obtained after the treatment in step 2 in a RuCl3 solution, and performing electrodeposition on the phosphorized stainless steel as a cathode to obtain the electrode, wherein the concentration of the RuCl3 solution is 2-8 mmol / L, the potential window during the electrodeposition is-2 V-0 V, and the electrodeposition time is 15-25 cycles.

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 present application relates to the technical field of electrochemical sensor, and especially to a sludge-based biochar suspension for electrode modification, a preparation method and application thereof, wherein the sludge-based biochar is prepared by taking brewery residual sludge as raw material, and then the ash is removed by HF solution and oxidized by nitric acid solution, so that the sludge-based biochar generates more pores, the specific surface area is improved, and meanwhile, the surface has more functional groups, such as nitro group and carboxyl group, which is beneficial to electrodeposition of CoS with high conductivity and high redox activity on the surface.

The invention provides a preparation method of a bidirectional pulse electrodeposition composite nickel-based electrode. The preparation method mainly comprises the following steps: (1) pretreating a nickel-based substrate; (2) in a nickel-based salt electroplating aqueous solution, carrying out electro-deposition on the treated nickel-based base material by adopting bidirectional pulse current to obtain a composite nickel-based electrode material; and (3) drying the obtained composite nickel-based electrode in a nitrogen oven to obtain the composite nickel-based electrode. Compared with the existing electro-deposition technology, the bidirectional pulse type electro-deposition method can effectively form a compact, wear-resistant and scouring-resistant load catalyst layer, can significantly improve the loading and dispersion of electrode active components, and at the same time, nickel-based metal and auxiliary active metal are mutually doped to form multi-element metal load, so that the performance of the electrode is improved. The electro-catalysis effect is greatly promoted through the electron action between different atoms, and the water electrolysis performance is effectively improved. Compared with constant-current electrodeposition, the method is simple in process condition, stable in performance, high in water electrolysis efficiency and easy to industrially expand, and has important industrial application prospects.

This invention provides a method for preparing (002) crystal-plane oriented metallic zinc and its application. The invention employs a two-electrode electrochemical deposition technique, using iron foil, titanium foil, or copper foil as the working electrode, commercial zinc foil as the counter electrode, and an aqueous zinc salt solution as the electrolyte. Constant current density discharge deposition is used to deposit (002) crystal-plane oriented metallic zinc on the working electrode; the constant current density is 50 mA cm⁻¹. ‑2 ~200 mA cm ‑2 The (002) crystal-plane oriented metallic zinc prepared by this invention can be used in rechargeable zinc-ion batteries. The two-electrode electrolytic cell device used in the preparation of metallic zinc in this invention is simple, the preparation process is straightforward, and the preparation method is more universal. The (002) crystal-plane oriented metallic zinc prepared according to the method of this invention can suppress zinc dendrite growth and hydrogen evolution, thereby improving the service life of rechargeable zinc-ion batteries.

The invention provides a method for inhibiting the formation of Kirkendall holes in an In-based brazing filler metal welding interface by adopting a vertical twin structure, which comprises the following steps of: respectively adhering a layer of vertical twin structure to the surfaces of an upper metal substrate to be welded and a lower metal substrate to be welded which are subjected to surface treatment in an electro-deposition manner, wherein the size of the vertical twin structure is 5 * 5 mm, the thickness of the vertical twin structure is 20-40 mu m, and the thickness of the vertical twin structure is 10 * 10 mm; the method comprises the following steps: carrying out a thermocompression bonding experiment on a pure copper coating with a vertical orientation nano twin crystal structure at set bonding temperature, pressure and time; according to the technical scheme, by means of the structural characteristic that the diffusion coefficient of the vertically-arranged twin boundaries in the nano twin structure is low, the diffusion rate of interface elements is reduced, flux balance is maintained, and the low impurity characteristic of the vertically-oriented nano twin film is utilized, so that formation of Kirkendall voids in the welding interface is limited. The method provided by the invention is simple and convenient to operate, and has great significance for improving the connection reliability of the In-based low-temperature bonding system.

The invention relates to a porous nickel-iron alloy integrated electrode and a preparation method and application thereof, and belongs to the technical field of electrochemistry. The preparation method comprises the following steps: carrying out cleaning pretreatment on a stainless steel mesh substrate; then electro-deposition is carried out in a solution containing ferric salt and nickel salt, and a nickel-iron alloy layer is formed; carrying out secondary electro-deposition in a solution containing zinc salt, and carrying out high-temperature calcination treatment to obtain a nickel-iron-zinc alloy; and finally, the zinc component is removed through selective corrosion of an alkaline solution, and the nickel-iron alloy integrated electrode with the porous structure is formed on the stainless steel mesh. The method is controllable in process, and a porous structure which is high in specific surface area and beneficial to mass transfer is effectively constructed through step-by-step electro-deposition, calcination and corrosion treatment. The obtained integrated electrode can be directly used as an alkaline water electrolysis oxygen evolution reaction (OER) anode, shows high electrocatalytic activity and stability, and is suitable for the fields of water electrolysis hydrogen production and the like.

The invention belongs to the technical field of chemical equipment, and discloses an electrolytic water membrane electrode and a preparation method thereof.The preparation method comprises the steps that a catalyst is electrically deposited on the surface of a substrate material, and a self-supporting electrode is obtained; preparing a first anionic membrane solution and a second anionic membrane solution by utilizing the functionalized polyaryl piperidine polymer and a polar solvent; and spraying the first anionic membrane solution on the surface of the self-supporting electrode, drying for the first time, smearing the second anionic membrane solution again by adopting the coating method, and drying for the second time to obtain the cathode side or anode side electrolytic water membrane electrode. Through an in-situ coating technology, the surface of the self-supporting electrode is directly covered with the anionic membrane solution, the surface microstructure of the self-supporting electrode is uneven, the anionic membrane solution can permeate into the pores, the anionic membrane and the electrode are tightly combined, ion transmission at the electrode / membrane interface is remarkably improved, and the self-supporting electrode is more stable in performance. Therefore, the electrolytic bath performance of the membrane electrode assembly under the condition that pure water serves as electrolyte is improved.

The invention provides a method for preparing 6N-grade high-purity nickel through multistage electrochemical refining, and belongs to the technical field of non-ferrous metal hydrometallurgy. According to the method, under the ultra-clean environment, the ultra-pure raw materials and the pulse electrodeposition technology are used, impurity precipitation is effectively inhibited, deposition layer growth kinetics is optimized, through multi-stage linkage, parameter collaboration and whole-process quality control, the problems that according to a traditional electrolytic method, impurity removal is not thorough, and the cathode deposition morphology is poor are effectively solved, and the method is suitable for industrial production. Limit purification and compact deposition are achieved, and a 6N-grade high-purity nickel cathode product with the smooth surface like a mirror and the compact and defect-free structure can be stably and efficiently obtained. The result of the embodiment shows that the purity of the high-purity nickel obtained through the method is larger than 99.9999%, and the standard of 6N-grade high-purity nickel is met.

The invention belongs to the technical field of preparation of new energy materials and supercapacitors, and particularly relates to a Mo-Fe co-doped MnO2 / Ag-CNTs composite electrode and a preparation method and application thereof. The method comprises the following steps: firstly, preparing an activated carbon cloth substrate, a deposition solution A and a deposition solution B; then the deposition solution A and the deposition solution B are mixed to obtain a Mo-Fe-MnO2 deposition solution, and an Ag-CNTs deposition solution is prepared; and finally, electro-deposition is alternately carried out in the Mo-Fe-MnO2 deposition solution and the Ag-CNTs deposition solution, and the Ag-CNTs / Mo-Fe-MnO2 / Ag-CNTs composite material is obtained. The preparation process provided by the invention is simple and controllable, and the large-scale preparation of the high-performance composite electrode is easy. The electrode is unique in structure and excellent in performance, and a flexible solid-state PSCSC device assembled by the electrode has high energy storage density and efficient mechanical energy self-charging capacity and shows huge application potential in the field of self-powered wearable / implantable microelectronics.

The invention provides a composite supercapacitor material, a preparation method thereof and a supercapacitor, and the preparation method comprises the following steps: immersing a foam metal substrate in a sulfur-molybdenum source deposition solution, and carrying out the first electrodeposition to obtain a foam metal substrate loaded with amorphous molybdenum sulfide; and immersing the foam metal substrate loaded with amorphous molybdenum sulfide into a silver source deposition solution, and carrying out second electrodeposition to obtain the composite supercapacitor material which comprises the foam metal substrate loaded with amorphous molybdenum sulfide and silver. According to the preparation method, the silver-amorphous molybdenum sulfide-foam metal composite electrode material is prepared through two-step electrochemical deposition, the preparation process is simplified, high temperature and high pressure are not needed, large-scale production can be achieved, and a high-performance water-based and solid-state symmetric supercapacitor constructed based on the material has a good application prospect. And collaborative improvement of energy density and power density and practicability of a solid-state device can be realized.

The invention discloses a preparation method of a modified graphite / copper composite heat sink material, and belongs to the technical field of metal-based composite materials. The method comprises the following steps: carrying out acid activation on crystalline flake graphite, modifying the crystalline flake graphite with a silane coupling agent, and selectively stripping to obtain graphite nanosheets; preparing copper-based alloy powder containing at least two carbides of Zr, Cr and Ti; performing graded ultrasonic-ball milling composite dispersion on the surface modified graphite powder, the copper-based alloy powder, the nano-diamond powder, the carboxyl functionalized multi-walled carbon nanotubes and the graphene oxide; gradient filling cold pressing forming and pre-sintering are carried out; performing hot pressing / spark plasma sintering, applying a magnetic field or a vibration field to realize graphite orientation, generating a carbide interface transition layer in situ, and reducing graphene oxide; and after machining, pulse electrodeposition is carried out on the copper-graphene composite coating, and surface micropores / micro textures and phase change material filling can be selectively formed. The method is suitable for efficient heat management of high-power electronic devices.

The application discloses a kind of production methods and application of mushroom-shaped array via hole mould which avoid blockage, easy to clean, including steps: round hole array mould processing, hot-press forming, conductive treatment, end insulation, electroforming;The mushroom-shaped array via hole mould obtained by the method is applied in the preparation of mushroom-shaped bionic array by rolling;The metal mould prepared by the method has high mechanical strength, high thermal conductivity and good durability, and converts the processing problem of mushroom-shaped blind hole into mushroom-shaped via hole, forms mushroom-shaped via hole by inducing non-uniform deposition of metal ions in 3D limited space, effectively eliminates the limitation that the morphology of plating layer is completely determined by the morphology of core mould in conventional electrodeposition process, simplifies the geometry of electroforming core mould, reduces the manufacturing difficulty of electroforming core mould, and improves the controllability of plating layer morphology.

The invention discloses a preparation method of a bipolar plate composite coating based on a high-entropy alloy and a conductive polymer, which comprises the following steps: firstly, electro-depositing a layer of high-entropy alloy coating on the surface of a pretreated bipolar plate, and then continuously carrying out electro-polymerization to prepare a polymer coating, thereby forming the composite coating. Through the mode, according to the preparation method of the bipolar plate composite coating based on the high-entropy alloy and the conductive polymer, the comprehensive performance such as corrosion resistance and conductivity of a bipolar plate is effectively improved, the performance requirement for a metal bipolar plate is met, and the preparation method has a wide application prospect in the field of corrosion protection.

The embodiment of the invention provides a three-dimensional vertical porous lithium metal negative electrode, a preparation method and a battery, a periodic three-dimensional vertical hole array is arranged on the surface of one side of lithium metal with the thickness of 30-50 [mu] m, and the depth of the three-dimensional vertical holes is 10-30 [mu] m; the content and distribution of carbon nanotubes in an electroplated metal layer are adjusted through three-section composite electrodeposition, so that on one hand, rich ion / electron transmission channels are provided, the local current density is remarkably reduced, and the electrochemical reaction kinetics is accelerated; an electric field and an ion concentration field formed on the inner wall of the hole can guide lithium ions to preferentially deposit at the bottom and in the hole, so that disordered growth of lithium dendrites on the surface is effectively inhibited, and finally, a volume expansion buffer space is provided; and moreover, a space is reserved for deposition of lithium in the circulation process, and stress can be dispersed and absorbed.

This invention relates to the field of electroplating solution analysis technology, and in particular to a rapid analytical method for polyethylene glycol (PEG) additives in copper electrodeposition solutions. The method involves protonated PEG forming a macromolecular complex colloid with phosphomolybdate under acidic conditions of pH 1.0–2.0. This colloid exhibits maximum absorption at 372 nm, and the absorbance value is directly proportional to the PEG concentration in the formed complex colloid. This allows for quantitative analysis of PEG in the copper electrodeposition solution. Because the phosphomolybdate-PEG complex colloid selected in this invention has excellent selectivity, and no sample pretreatment is required, this invention offers advantages such as ease of operation, speed, high sensitivity, and good selectivity. It is particularly suitable for intermediate control analysis in production environments, such as for electroplated copper interconnects in chips and printed circuit boards, as well as electrolytic copper foil for negative electrode current collectors and copper-clad laminates in energy storage batteries.

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.

The present application relates to a kind of nickel-zinc iron ternary oxygen electrode and its preparation method and application, including the following steps: (a) on the conductive substrate, electrodepositing nickel-zinc pre-plating layer is plated;(b) the conductive substrate of the nickel-zinc pre-plating layer of plating is as anode, nickel electrode is as cathode, be placed in the hydroxide aqueous solution containing iron source, under the condition of 70-90 DEG C, anode potential 1.8V~2.2V electrochemical oxidation is carried out.The conductive substrate of the nickel-zinc pre-plating layer of plating is as anode, nickel electrode is as cathode to carry out electrochemical oxidation, so that the metal zinc in pre-plating layer can be anodically dissolved, and soluble zincate ion is generated, so that abundant pore and defect are formed in-situ in electrode interior;Iron ion in electrolyte occurs replacement reaction on dissolved zinc site or exposed nickel site, and is introduced into electrode skeleton;So that more stable, active, and substrate combined firmly Porous ternary nickel-zinc iron composite electrode is finally obtained.

The application discloses a kind of short process gold extraction devices of waste printed circuit board.It includes separation module, collection module and electrodeposition part.Separation module contains leaching tank, and leaching liquid and cleaning liquid are alternately introduced, and leaching process is strengthened using micro-bubble generator and heater, so that gold foil is stripped from the surface of circuit board;Collection module contains filter and temporary storage tank, for intercepting and collecting gold foil and classifying temporary storage liquid;Electrodeposition part is connected to temporary storage tank, and copper in leaching solution is recovered through electrodeposition tank, and tail liquid flows back to leaching tank to realize closed circuit circulation.The application adopts integrated design, and combines selective leaching and physical interception by micro-bubble strengthening, without complex high-temperature or cyanide equipment, and one step realizes efficient stripping of gold and electrolytic recovery of copper;At the same time, leaching solution is closed circuit, and cleaning liquid is recovered in stages, which significantly shortens the process flow, reduces equipment investment and environmental pollution.

The utility model discloses a kind of PCB acid etching waste liquid recycling device, it is related to etching liquid circulation technical field, including buffer box, the lower surface of the buffer box is fixedly connected with electrolytic chamber and electrodeposition chamber, the left side of the electrodeposition chamber is fixedly installed with conveying pump, the input end of the conveying pump is communicated with drainage tube and is connected to the inside of the electrolytic chamber, the output end of the conveying pump is communicated with infusion tube and is connected to the inside of the electrodeposition chamber, the lower side of the inner wall of the buffer box is fixedly installed with multiple servo motors.In the utility model, the oxidation ability of copper ions is reduced by electrolysis, ensuring that the etching liquid can be used continuously, and then the excess copper ions in the etching liquid are recovered by electrodeposition cathode and electrodeposition anode, thereby ensuring the effect of the etching liquid while recovering copper ions, reducing costs, and further ensuring that the etching liquid can be recycled while reducing costs and increasing efficiency.

The application relates to an oil-water separation membrane, in particular to a super-hydrophilic foam copper separation membrane and a super-hydrophobic foam copper separation membrane based on a two-dimensional MOF structure and a preparation method and application thereof, and comprises the following steps: S1, foam copper pretreatment; S2, oxidation treatment; S3, synthesis of MOF@foam copper; and synthesis of PDMS@MOF@foam copper. Compared with the prior art, the application solves the problems that the foam copper prepared by electrochemical oxidation in the prior art is seriously chemically corroded, the recyclable rate is low, the foam copper prepared by electrodeposition or vapor modification has a complex process, high cost and low separation efficiency, the in-situ synthesis MOF method is used to realize the foam copper which is simple to operate, low in cost, good in stability, high in oil-water separation efficiency and recyclable.

The invention discloses an iron-doped nickel-cobalt metaphosphate electrode material based on an oxide intermediate and a preparation method and application thereof, and relates to the technical field of supercapacitors, the preparation method comprises the following steps: preparing an electrolyte containing a nickel salt, a cobalt salt and an iron salt, and carrying out electro-deposition on a conductive substrate to obtain the iron-doped nickel-cobalt metaphosphate electrode material. A nickel-cobalt-iron layered double hydroxide precursor is obtained; sintering the nickel-cobalt-iron layered double hydroxide precursor to prepare an intermediate; and phosphating the intermediate by taking sodium hypophosphite as a phosphorus source to finish the preparation. The invention also discloses the iron-doped nickel-cobalt metaphosphate electrode material based on the oxide intermediate prepared by the method and an application of the iron-doped nickel-cobalt metaphosphate electrode material in preparation of a supercapacitor. Through a unique pre-oxidation process and substrate optimization, the electrochemical performance of the electrode material is remarkably improved, and the problems that an existing metaphosphate material is poor in conductivity and insufficient in active site are solved.

The invention relates to a Pt-Pd composite electrode and a preparation method and application thereof. The preparation method comprises the following steps: placing a conductive substrate in an electro-deposition liquid, taking the conductive substrate as a working electrode, sequentially carrying out first electro-deposition and second electro-deposition, and forming a Pt-Pd composite catalyst layer on the surface of the conductive substrate to prepare the Pt-Pd composite electrode, the electro-deposition liquid comprises a platinum source, a palladium source and a supporting electrolyte. The Pt-Pd composite electrode is prepared through cooperation of Pt and Pb, the structural stability of the electrode is remarkably improved, meanwhile, layer-by-layer growth of catalytic particles is achieved in the mode that first electrodeposition and second electrodeposition are combined, it is guaranteed that catalytic active sites are fully exposed, it is also guaranteed that the binding force between a plating layer and a substrate is extremely high, and the service life of the plating layer is prolonged. The electrode is used for electrochemically synthesizing ammonia, has relatively high Faraday efficiency, is particularly suitable for long-term operation under high current density, and has a good industrial application prospect.

The invention relates to a porous copper foil and a preparation method and application thereof, and the method comprises the following steps: a plurality of cathode insulation regions are arranged on a cathode roller, and the total area of the plurality of cathode insulation regions accounts for 5%-50% of the area of a target region on the cathode roller; a plurality of anode insulation regions are arranged on the anode, and the proportion of the absolute value of the difference value between the total area of the anode insulation regions and the total area of the cathode insulation regions in the area of the target region is smaller than or equal to 5%; and the cathode roller and the anode are placed in a copper-containing electrolyte for copper foil electroplating deposition, and the porous copper foil is prepared. According to the method, through cooperation and synergistic interaction of the specific cathode roller and the specific anode roller, the mechanical thickness uniformity of the porous copper foil on the whole surface is improved in the electrodeposition foil generation process, stress concentration is reduced, and then the mechanical performance and the electrical performance of the porous copper foil are improved.