168 results about "Electroless deposition" patented technology

Provided is a method for preparing a collagen membrane for guided tissue regeneration. By utilizing the electrochemical deposition technology and using collagen as the starting material, the method achieves the electrochemical deposition in a low-temperature environment using a direct-current source, and thus, in a constant-voltage output mode, prepares a collagen membrane of an asymmetric structure (with one dense surface and one loose and porous surface) in one step at a high voltage. Also, by means of asymmetric cross-linking, the membrane may be asymmetrically degraded in vivo, thus promoting the rapid repair of a wound while keeping a stable shielding effect on the wound. The method features ease to operate, efficiency, environment conservation, and good scalability. The obtained collagen membrane possesses excellent mechanical properties and uniform overall performance. The area of the collagen membrane of the asymmetric structure prepared by the preparation method is equal to that of the electrode plate, such that scale-up production can be achieved by using an electrode plate with a greater area, thereby improving productivity.

The invention provides a flow battery composite electrode, a preparation method thereof and a flow battery. The preparation method comprises the following steps: placing a pretreated carbonaceous substrate in a mixed solution of a surfactant, an electrolyte and a transition metal salt, growing a metal oxide nanosheet array on the surface of the pretreated carbonaceous substrate by using an electrochemical deposition process, washing, drying and roasting to obtain the flow battery composite electrode, wherein the feeding ratio of the surfactant to the transition metal salt is (1-2) g: (0.02-0.2) mol. The invention also provides the flow battery composite electrode prepared by the preparation method and a flow battery prepared from the electrode. According to the preparation method, the electrochemical reaction activity of the electrode in the all-vanadium redox flow battery can be optimized by regulating and controlling the chemical composition and the microstructure of the catalyst loaded on the surface of the carbon fiber.

The invention relates to the technical field of oxygen evolution catalysts, in particular to a preparation method and application of a monatomic doped ferronickel-based oxygen evolution electrocatalyst, and the preparation method comprises the following steps: growing a NiFe-LDH nanosheet substrate on the surface of a carbon-based carrier in situ through a hydrothermal method, and then precisely regulating and controlling transition metal monatomic doping in combination with an electrochemical deposition technology. The monatomic doped ferronickel-based oxygen evolution electrocatalyst prepared by the preparation method has the advantages of excellent catalytic activity, low cost, greenness and no toxicity.

A solid-state electronic miniature clock featuring a multi-layered silicon chip. A first circuit layer includes an electron paramagnetic resonance sensor, while the second layer comprises a silicon substrate with an etched trench housing single atom-doped fullerene molecules. Magnets are strategically placed on the silicon substrate and a third circuit layer to establish a baseline magnetic field. The chip incorporates through silicon vias (TSVs) filled with copper, forming a copper coil for enhanced antenna performance. Thermal management is achieved through vacuum cavities for isolation, strategically placed metals for heat generation, and thermo-electric materials, such as a bilayer of Bi$_2$Te$_3$ and Bi$_2$Se$_3$, for temperature regulation. A feedback loop monitors and adjusts the temperature, ensuring stability. Fabrication techniques include Deep Reactive Ion Etching (DRIE), electrochemical deposition, and photolithographic patterning, providing precise control over the chip's structure and functionality.

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.

Vertically stacked semiconductor devices and methods of fabrication thereof that include a first device structure bonded to a second device structure via bonding layers having compressible metal bonding structures. The compressible metal bonding structures may be fabricated using an electroless deposition (ED) process, and may be less dense with a greater degree of compressibility than equivalent materials deposited by related processes. Accordingly, mating pairs of metal bonding structures may have a degree of compliance that enables effective metal-to-metal contact during a subsequent bonding process. Recrystallization of the metal material during an annealing process may produce shrinkage of the metal material and the formation of void areas between the metal bonds and the surrounding dielectric layers, thereby reducing stress on the surrounding dielectric-to-dielectric interface. Accordingly, bonding defects may be minimized and the performance and yields of vertically stacked semiconductor devices may be improved.

The invention provides a method for improving passivation contact performance of a p region of a TBC battery, which comprises the following steps of: pretreating an n-type monocrystalline silicon wafer, depositing a SiO2 layer and boron (B) doped polycrystalline silicon (poly-Si), etching, performing laser ablation and the like, then depositing phosphorus (P) doped poly-Si, and finally depositing a passivation and anti-reflection layer and preparing a metal electrode. A tunneling oxide layer and boron in-situ doped polycrystalline silicon are deposited in a p region by adopting an ultra-low temperature plasma enhanced chemical deposition (PECVD) mode, the reaction of SiH4 and N2O is introduced to improve the deposition effect of the oxide layer at low temperature, the compactness of a film layer at low temperature is ensured to improve the separation of B on a SiO2 / c-Si interface, and the passivation performance is improved; b doping poly-Si is adopted in the p region, meanwhile, processing is matched with a nanosecond laser, non-equilibrium doping of the B to the poly-Si is achieved, the ultrahigh doping concentration is obtained, the p region passivation performance of the TBC is improved, and then the open-circuit voltage and the conversion efficiency of the TBC battery are finally improved.

The invention discloses an ordered and disordered structure integrated nanoflower SERS (Surface Enhanced Raman Scattering) chip and a preparation method thereof, and relates to the field of surface enhanced Raman scattering chip detection. The chip comprises a substrate layer, an ordered periodic nanostructure array metal layer, a disordered nanosheet metal layer and a nanoflower structure metal layer, the nanoflower structure metal layer and the disordered nanosheet metal layer are attached to the surface of the ordered periodic nanostructure array metal layer; the ordered periodic nanostructure array metal layer is attached to the surface of the substrate layer. The nanostructures of the nanoflower structure metal layer units comprise nanosheets, nanowires, nanospheres and the like. The preparation method comprises the steps of nanoimprinting, oxygen plasma etching, magnetron sputtering, electrochemical deposition and the like. The detection repeatability is guaranteed through an ordered structure, the hot spot density and strength are improved through a disordered structure, the preparation process is stable and reliable, the chip with the uniform surface and high repeatability can be produced, and the chip has wide application prospects in the fields of biochemical sensing, food safety, environment monitoring and the like.

The invention provides a one-dimensional nano material with wave-absorbing performance as well as a preparation method and application of the one-dimensional nano material. The preparation method comprises the following steps: (1) sequentially carrying out heavy ion beam irradiation, ultraviolet light sensitization and chemical etching on a high polymer material template to obtain an etched template; (2) spraying metal on one side of the etching template to form a gold layer; and (3) electrochemical deposition is conducted on the side, not sprayed with metal, of the etching template obtained in the step (2), deposition liquid adopted in the electrochemical deposition is an aqueous solution containing TiF4 and CoCl2, and therefore the Co / TiO2 composite nanowire is generated. Through the preparation method, the Co / TiO2 composite wave-absorbing material which is arranged in parallel, high in impedance matching capability and excellent in microwave absorption performance can be obtained.

The invention discloses a TC4 titanium alloy and carbon fiber reinforced composite material laser welding method, and relates to the field of dissimilar material laser welding. The preparation method comprises the following steps: firstly, carrying out surface modification on carbon fibers by using hydrogen peroxide, deepening the surface oxidation depth by microwave radiation, stripping graphene oxide on the outermost surface by ultrasonic treatment, and then carrying out plasma beam treatment impact to increase and enlarge grooves and pores on the surfaces of the carbon fibers, so that active groups and concave-convex structures on the surfaces of the modified carbon fibers after resin is filled and cured; and secondly, a layer of nano nickel is chemically deposited on the surface of the titanium alloy microstructure, permeation and corrosion of the modified carbon nanotubes to the titanium alloy are reduced, then the carbon nanotubes subjected to acid treatment are deposited on the surface layer of the nano nickel through the electrophoretic deposition technology, the interface wetting and spreading capacity is improved, and the residual stress after welding is reduced. The TC4 titanium alloy, the nano nickel deposition layer, the modified carbon nanotube deposition layer and the modified carbon fiber composite material layer are combined and connected through laser welding, so that the high-strength connection effect is achieved.

The electrochemical deposition color developing device comprises an insulating substrate, a first electrode, a second electrode and electrolyte, wherein the first electrode and the second electrode are arranged on the insulating substrate at intervals, and the space between the first electrode and the second electrode is filled with the electrolyte; the second electrode comprises a metal adhesion layer and a metal current collector which are stacked; the first electrode serving as a positive electrode, the metal current collector serving as a negative electrode and the electrolyte form the electrochemical battery. The invention discloses a camouflage device based on an electrochemical deposition device. The camouflage device comprises an intelligent sensing control system for switching output control voltage and an electrochemical deposition developing device based on control voltage regulation. The electrochemical deposition color developing device is simple in preparation process, and the cost can be reduced; a complex micro-nano structure is not needed to control deposition color development, and the color development function and the energy storage function are integrated only based on voltage regulation and control.

The invention relates to a device for electrochemical deposition plugging reinforced concrete cracks and a construction method thereof. The device is composed of a sponge block, a transparent organic glass box, a direct current power supply, a conductor, a metal strip, a water tank and a micro water pump, etc. The technical method of circulating electrolyte is used to overcome the problem that it is difficult to stably keep the electrolyte covering the plugging area in the electrochemical deposition plugging concrete crack process. The device and the construction method thereof can not only greatly simplify the relevant operation process and improve the construction efficiency, but also significantly improve the plugging effect.

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.

A metal interconnect structure is doped with zinc, indium, or gallium using top-down doping processes to improve diffusion barrier properties with minimal impact on line resistance. Dopant is introduced prior to metallization or after metallization. Dopant may be introduced by chemical vapor deposition on a liner layer at an elevated temperature prior to metallization, by chemical vapor deposition on a metal feature at an elevated temperature after metallization, or by electroless deposition on a copper feature after metallization. Application of elevated temperatures causes the metal interconnect structure to be doped and form a self-formed barrier layer or strengthen an existing diffusion barrier layer.

A method for manufacturing a multi-layer ceramic capacitor (MLCC) end electrode and printing a full-area inner electrode protective layer is disclosed. The method uses thin dielectric ceramic layer thickness and a plurality of nickel inner electrode stacks to achieve high capacitance. The method produces high-density electrode-to-ceramic ratio end edges and side edges. The method uses an ultralow-temperature electrochemical deposition coating technology to manufacture a low-stress multi-layer ceramic capacitor end electrode and an insulating protective layer, thereby improving the yield of the multi-layer ceramic capacitor and reducing manufacturing costs.

The invention provides a metal hydroxide (LDH) and a preparation method and application thereof in seawater electrolysis, and belongs to the field of new materials and hydrogen energy preparation. Aqueous solutions of ferric salt, cobalt salt and nickel salt are stirred to obtain a mixed solution; under a constant voltage, metal ions of the mixed solution are subjected to a reduction reaction on the surface of the working electrode to generate ternary NiCoFe-LDH, namely, the metal hydroxide is obtained; according to the method, a high-activity and high-stability nano-structure material directly grows on a conductive substrate through an electrochemical deposition method of three metal (Fe, Co and Ni) hydroxides in a specific proportion, and the low-cost seawater electrolysis catalyst can be constructed only through direct in-situ growth of LDH through a potentiostatic method, so that the high-temperature and high-pressure requirements of a traditional hydrothermal method are avoided, and the method is suitable for industrial production. The LDH nanosheet array structure directly grown in the invention avoids the use of a binder, improves the mechanical stability of the electrode and prolongs the cycle life of the electrode. The ternary NiCoFe-LDH is used as an anode material of an electrolytic tank and can be used for directly electrolyzing seawater to produce hydrogen.

The invention provides selenium nanoparticles as well as a preparation method and application thereof, and belongs to the technical field of selenium nanoparticles. Acetone ultrasonic cleaning and chemical polishing pretreatment are performed on a pure titanium substrate to obtain a clean surface, an anodic oxidation method is adopted to prepare a # imgabs0 # nanotube array carrier, and the nano-particles are prepared into selenium nano-particles. The method comprises the following steps: accurately depositing selenium nanoparticles on a carrier by using an electrochemical deposition method, realizing load control by combining an electrochemical kinetics principle, realizing uniform dispersion of the particles by matching an ultrasonic dispersion technology with a particle swarm optimization algorithm, and carrying out centrifugal separation and vacuum drying to obtain a spherical selenium nanoparticle product. And a multi-dimensional quality control detection system of a transmission electron microscope, an X-ray photoelectron spectroscopy and dynamic light scattering is established, so that the technical problems that the particle size distribution is non-uniform and the deposition load is difficult to accurately control in the preparation process of the selenium nanoparticles are solved.

The invention discloses an organic-inorganic multi-layer composite coating material with functions of promoting cell adhesion, resisting infection and promoting osteogenesis and a preparation method of the organic-inorganic multi-layer composite coating material. The method specifically comprises the following steps: 1) carrying out primary sand blasting treatment on a titanium / titanium alloy sample, then removing an oxide layer on the surface of the titanium / titanium alloy sample by using an ultrasonic oil removal and glow discharge cleaning process, and constructing a copper / zinc alloy coating on the surface of the sample by combining an electrochemical deposition process; 2) carrying out micro-nano processing on the coating by using a secondary sand blasting process to introduce a topological morphology; (3) depositing a polydopamine PDA coating on the surface by using an in-situ auto-polymerization process, and simultaneously dipping to complete the chelation of Fe < 3 + > and PDA; 4) further utilizing an ultrasonic impregnation process to realize conversion from PDA-Fe < 3 + > chelation to PDA-Fe < 3 + >-salvianolic acid b chelation so as to introduce a salvianolic acid b layer, and washing, air-drying and sterilizing to obtain the material. The material has multiple cell adhesion promotion, infection resistance and multiple osteogenesis promotion functions, and can realize innovation of coating technologies in the fields of orthopedics, dentistry and the like.

The application discloses an electrochemical deposition color developing device, which comprises an insulating substrate, a first electrode, a second electrode and an electrolyte; the second electrode comprises a metal adhesion layer and a metal current collector which are arranged in layers; the first electrode serves as a positive electrode, the metal current collector serves as a negative electrode, and the electrolyte forms an electrochemical cell with the first electrode and the second electrode. The application discloses a camouflage device based on the electrochemical deposition device, which comprises an intelligent sensing control system for switching output control voltage and an electrochemical deposition color developing device based on control voltage regulation. The electrochemical deposition color developing device has simple preparation process and can reduce cost; the color developing function is realized without complex micro-nano structure control deposition color developing, and the color developing function and the energy storage function are combined into one based on voltage regulation.

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 belongs to the technical field of oral implant materials, and relates to a magnesium metal-guided bone regeneration membrane, a preparation method thereof and a product for preparing the magnesium metal-guided bone regeneration membrane. The magnesium metal-guided bone regeneration membrane comprises a bone repair combination product of the magnesium metal-guided bone regeneration membrane. The preparation method comprises the following steps: respectively providing an electrochemical deposition solution and a polysaccharide-containing solution; the electrochemical deposition liquid comprises a calcium ion donor, a phosphate ion donor and mussel mucin; the method comprises the following steps: placing a magnesium metal matrix in an electrochemical deposition solution, and carrying out first-stage electrochemical deposition under a first electrochemical deposition condition to prepare an intermediate 1; placing the intermediate 1 in an electrochemical deposition solution, performing second-stage electrochemical deposition under a second electrochemical deposition condition, cleaning, and drying to prepare an intermediate 2; placing the intermediate 2 in a solution containing polysaccharide, dip-coating the polysaccharide, and drying; the first electrochemical deposition condition and the second electrochemical deposition condition are respectively as follows: the voltage is 1-5V and 10-60V; the membrane has the biological functions of low corrosion rate, high bonding strength, inflammation resistance, bacteria resistance, osteogenesis promotion and the like.

The invention belongs to the technical field of electrocatalysis, and discloses a preparation method and application of a COF-Cu / Cu2O nanocluster composite material. The composite material has a lamellar stacked microstructure and comprises a nanosheet 2D-COF substrate and Cu / Cu2O nanoclusters uniformly loaded on the surface of the substrate, and the preparation method of the material comprises the following steps: (1) preparing 2D-COF nanosheets by using a microwave-ultrasonic solvothermal method and an ultrasonic stripping method; and (2) preparing a Cu / Cu2O nanocluster loaded on the 2D-COF nanosheet by utilizing an electrochemical deposition method, so as to obtain the target composite material. The composite material has high yield, high product selectivity and high crystallinity. And a stable frame structure is adopted, so that the material stability can be kept in different environments. Dispersed metal sites are beneficial to charge transfer, and good catalytic performance is shown in the aspect of electrocatalytic CO2 conversion. And the preparation method is relatively simple and has strong operability.

This invention belongs to the field of lithium battery technology, and particularly relates to a method for large-scale preparation of ultrathin lithium anodes. The method involves preparing lithium powder from lithium metal using emulsion methods, vacuum distillation, ultrasonic crushing, mechanical pulverization, or chemical deposition. The lithium powder and a two-dimensional material are then uniformly dispersed in solvents with similar boiling points or in the same solvent, forming a lithium powder dispersion and a two-dimensional material dispersion, respectively. The two-dimensional material dispersion and the lithium powder dispersion are cross-mixed and coated onto a substrate to obtain a lithium powder-two-dimensional material composite film. A layer of anti-lithium dendrite dispersion or a lithium-affinity material dispersion is then spin-sprayed separately onto the surface of the lithium powder-two-dimensional material composite film. The electrode is dried to remove the solution, and the film is rolled to obtain an ultrathin lithium anode. Compared to existing technologies, this invention allows for large-scale, rapid, and continuous production at low temperatures. The resulting composite film has a surface protective layer and is temporarily stable in air, facilitating direct cutting and application.

The application discloses a flexible transparent aqueous zinc ion battery polyaniline / vanadium oxide composite positive electrode sheet and a preparation method thereof, and belongs to the technical field of aqueous zinc ion batteries. The preparation method comprises the following steps: using vanadyl sulfate aqueous solution as an electroplating solution, using a gold grid / PET as a working electrode, and using a platinum sheet as a counter electrode to construct a two-electrode structure; a vanadium oxide layer is deposited on the surface of the gold grid / PET by adopting a constant-voltage electrochemical deposition method, and a vanadium oxide / gold grid / PET is prepared; sulfuric acid and polyaniline are added into deionized water to prepare an electroplating solution, the vanadium oxide / gold grid / PET is used as the working electrode, the platinum electrode is used as the counter electrode, and a saturated calomel electrode is used as a reference electrode to construct a three-electrode structure; a polyaniline layer is deposited on the surface of the vanadium oxide / gold grid / PET by adopting a constant-voltage electrochemical deposition method, and the composite positive electrode sheet is obtained.

The invention discloses a PtCSA / Cu2O / NF composite material and application thereof in electrocatalytic reduction of nitrate into ammonia, a preparation method of the PtCSA / Cu2O / NF composite material comprises the following steps: depositing Cu (OH) 2 on foamed nickel NF to obtain a Cu (OH) 2 / NF electrode plate, performing high-temperature calcination in a nitrogen atmosphere, taking the obtained CuO / NF electrode plate as a cathode, adopting an electrolyte solution as an electrolyte solution, and performing high-temperature calcination in a nitrogen atmosphere to obtain the PtCSA / Cu2O / NF composite material. The preparation method comprises the following steps: taking CuO as a cathode, carrying out electroreduction on an electrode by adopting an anode counter under a preset constant voltage to convert CuO on the cathode into Cu2O to obtain a Cu2O / NF electrode plate, and finally carrying out electrodeposition on the electrode plate to load Pt, thereby completing the preparation. According to the method, the atomic-scale dispersity of platinum is accurately regulated and controlled through an in-situ electrochemical deposition method, a monatomic-nanocluster gradient distribution structure (PtCSA / Cu2O / NF) is constructed, the ultra-low loading capacity of precious metal platinum is achieved, and the good application effect is achieved in the aspect of electrocatalytic reduction of nitrate into ammonia.

The invention discloses a photoelectric detector with a silicon nanowire / lead sulfide / graphene composite structure. The photoelectric detector comprises an indium gallium electrode, a silicon substrate, a silicon oxide layer, a silicon nanowire, a lead sulfide submicron crystal and a graphene / PMMA layer which are sequentially arranged from bottom to top, the solar cell further comprises a gold electrode arranged on the surface of the silicon oxide layer, and the other face of the gold electrode is in contact connection with the graphene / PMMA layer. According to the photoelectric detector, the lead sulfide crystal film is grown on the surface of the silicon nanowire in situ through an electrochemical deposition method, and a silicon / lead sulfide structure with good interface contact and synergistic effect is constructed; meanwhile, rapid separation and transportation of carriers are realized by utilizing high carrier mobility of the silicon nanowires and heterojunction energy band engineering, and dark current and response speed are effectively reduced. Finally, a suspended graphene top electrode structure design is introduced, effective collection of signals is realized by using the advantages of high light transmittance (97.7%) and mechanical flexibility of graphene, and efficient transmission of photon-generated carriers at an interface is ensured.

The invention discloses a technological method for plating gold on fuzz buttons and a special tool, and belongs to the field of surface treatment of electronic components. The method comprises the following steps: fixing the fuzz button on a special electroplating auxiliary tool, wherein the tool consists of a small positioning disc, a net-shaped connecting structure and an electrode plate; immersing the tool into a gold-containing electroplating solution, switching on a power supply through an electrode plate, and simultaneously starting an ultrasonic generating device to carry out vibration plating; gold ions are uniformly deposited on the surface of the fuzz button and a ten-micron-level random winding gap in the fuzz button by utilizing micro-stirring and strong infiltration capacity generated by an ultrasonic cavitation effect and cooperating with an electrochemical deposition effect; the problems that in the prior art, plating is not uniform, cost is high, and the structure of the fuzz button is prone to being damaged are solved, high-efficiency, low-cost and high-quality gold plating is achieved, the contact resistance consistency of the fuzz button is remarkably improved, and the mechanical life of the fuzz button is remarkably prolonged.

The present invention relates to the technical field of electrocatalytic electrode materials, specifically to a metal-loaded three-dimensional copper-based catalyst, its preparation method and application. In the present invention, copper foam is used as the substrate. First, the copper foam is immersed in a mixed solution containing ammonium persulfate and sodium hydroxide, and then taken out. By controlling the drying conditions, while obtaining Cu(OH)2 nanowires on the copper foam, partial dehydration reduction of Cu(OH)2 is achieved to obtain reducible cuprous oxide active sites. Then, cuprous oxide is reacted with metal ions to obtain a metal-loaded three-dimensional copper-based catalyst. The present invention realizes the composite of multiple metal elements and Cu(OH)2 under normal temperature and pressure, overcomes the technical defects existing in the prior art of electrochemical deposition method and high-temperature sintering method, and the obtained metal-loaded three-dimensional copper-based catalyst has non-aggregated metal particles, has the characteristics of efficient mass transfer and charge transfer, and can effectively improve the application efficiency of the metal-loaded three-dimensional copper-based catalyst in electrocatalysis.

The invention discloses a preparation method of a female template, the female template, a preparation method of a material with a nano-structure shape and the material with the nano-structure shape. The method comprises the following steps: constructing a filler film for copying a structural shape on a first surface of a substrate material; stripping the filler film from the surface of the substrate material, and depositing a conductive metal layer on the surface of the filler film to form a conductive filler film; performing electrochemical deposition on the first surface of the conductive filler film to form a female template metal layer; and removing the conductive filler film, and making the remaining female template metal layer into the female template. According to the invention, the electrodeposited nickel metal layer is introduced as a female template raw material, and the prepared female template has flexibility and keeps a multi-element pattern form with high precision by utilizing the physicochemical properties of nickel; and the use frequency of cyclic imprinting is far greater than that of an organic polymer flexible female template and a silicon-based rigid female template in the prior art, so that the stability of a female template preparation process is remarkably improved.

The invention discloses a non-noble metal heterogeneous catalyst, a preparation method and application of the non-noble metal heterogeneous catalyst in electro-catalytic synthesis of 2, 5-furandicarboxylic acid from 5-hydroxymethylfurfural, and the preparation method comprises the following steps: (1) dissolving cobalt salt and copper salt in deionized water to obtain an electrolyte; (2) immersing a pretreated foamed nickel substrate in the electrolyte, and carrying out constant potential electrochemical deposition in a three-electrode system to prepare a pre-CoCu / NF electrode; (3) activating pre-CoCu / NF in a 1M KOH aqueous solution through an electrochemical cyclic voltammetry method to obtain a non-noble metal heterogeneous catalyst; the preparation method is simple, efficient, green, free of pollution and easy to amplify. The prepared non-noble metal heterogeneous catalyst is high in activity, the non-noble metal heterogeneous catalyst serves as a positive electrode material for electrocatalytic oxidation of 5-hydroxymethylfurfural, the electrode production efficiency is remarkably improved, the current density and FDCA selectivity of HMOR are remarkably improved, and the electrochemical performance far exceeds that of a catalyst prepared through a conventional strategy.