91 results about "Electroless deposition" patented technology

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.

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 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.

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 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 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.

This invention relates to a metal-organic coordination catalyst, its preparation method, and its application. The preparation method includes the following steps: pretreatment of nickel foam; dissolving ferric nitrate nonahydrate and nickel nitrate hexahydrate in deionized water to obtain an electrolyte; chemically depositing an intermediate catalyst in the electrolyte; and preparing the catalyst using a solvothermal method, wherein the mixed solution is prepared by dissolving 2,5-dihydroxyterephthalic acid in deionized water, anhydrous ethanol, and N,N-dimethylformamide (DMF), and the intermediate catalyst is completely immersed in the mixed solution to obtain the catalyst. This invention combines electrochemical deposition and a solvothermal method to synthesize a catalyst with a unique rod-like morphology. The samples achieved 100, 500, and 1000 mA / cm². 2 It requires only 264, 296 and 308 mV overpotentials at current densities, respectively, and can maintain stability for 1000 hours at a current density of 1000 mA / cm2; at the same time, it has high production efficiency, low cost, and is suitable for large-scale industrial production.

An assembly (1) with at least one electrical feedthrough (2) comprises a body (10) with an opening (12) through which an electrical conductor (16) is held in electrical insulation from the body by a fixing material (14) which closes the opening. The surface of the conductor not covered by the material is wholly provided with a first coating (20), the surface of the conductor covered by the material is free of the first coating; the surface of the body not covered by the material is free of the first coating, optionally provided with a second coating different from the first coating. Alternatively, the surface of the body not covered by the material is wholly provided with the first coating, the surface of the body covered by the material is free of the first coating; the surface of the conductor not covered by the material is free of the first coating, optionally provided with a second coating (30) different from the first coating. The first coating has one or more layers, at least the outermost layer being a layer of electroless deposition of the first coating material.

This invention relates to the field of copper-based catalyst preparation, and discloses a self-supporting copper-based electrode, its preparation method, and its applications. The method for preparing a self-supporting copper-based electrode includes: placing a carbon-based support in an electrolyte containing copper salt, and performing constant-current electrochemical deposition under the induction of hypochlorous acid. The self-supporting copper-based electrode prepared by this method exhibits excellent electrocatalytic performance while also possessing the advantage of simple processing.

A method of producing an aperture plate for a nebuliser is described. A substrate (2) is patterned with a resist (5, 6) and a metal (10) is applied by electroless deposition so that the resist forms a desired aperture pattern. The substrate (2) has an array of domes (2(b)) to provide aperture plates (16) with domes (101) and flanges (102) without need for application of mechanical force pressing after deposition. The substrate is shaped for simultaneous manufacture of a plurality of aperture plates in which the resist pattern provides a deposition region for each aperture plate. By using electroless plating the aperture plate accuracy is excellent, especially for defining apertures having a diameter in the rang of only less than 10 μm, and having improved corrosion and fracture resistance for high frequency nebulizer operation.

The application discloses a method for synthesizing Au-Pt nanowire arrays by an electrochemical deposition method on carbon paper with aniline as a ligand and application thereof, and can be applied to methanol electro-oxidation reaction. After growing gold nanowire arrays on a conductive substrate by using an electrochemical deposition method with aniline as a ligand, Au-Pt nanowires are synthesized by a secondary electro-deposition mode. The electrochemical deposition has controllable reduction capacity, convenient operation and environmental friendliness. The combination of gold nanowires and platinum (Pt) can significantly improve the activity of a catalyst. The diameter of gold-platinum nanowires prepared by the electrochemical deposition method assisted by an aniline ligand can reach 30 nanometers. The increase in the size is helpful to expand the electrochemical active surface area, thereby enhancing the electron transmission efficiency and further improving the electro-catalytic performance. The gold nanowires are integrated into platinum-based nanomaterials, and for an anode catalyst of a direct methanol fuel cell, the gold nanowires can significantly improve the catalytic efficiency of a methanol oxidation reaction.

The utility model discloses a cyanide-free plating imitation gold and electrophoretic coating plating layer structure which comprises a steel substrate, and a cyanide-free pre-plating copper layer, an acid copper plating layer, a nickel-copper alloy plating layer, a cyanide-free imitation gold plating layer and an electrophoretic varnish coating which are sequentially prepared on the steel substrate from inside to outside. According to the cyanide-free plating imitation gold and electrophoretic coating plating layer structure disclosed by the utility model, the binding force of the plating layer is tested by a thermal shock method according to GB / T 5270-2005 < GB / T 5270-2005 < GB / T > 5270-2005 < GB / T > 5270-2005 > < GB / T > 5270-2005 > < GB / T > 5270-2005 > < GB / T > 5270-2005 > < The acetate fog test is carried out for 168 hours according to GB / T 10125-2021 Artificial Atmosphere Corrosion Test Salt Spray Test, no red corrosive substance is generated on the surface of a plated part, and the plating layer structure has good corrosion resistance.

Methods of treating metal nanocrystals are provided. In embodiments, such a method comprises exposing metal nanocrystals comprising a metal and characterized by at least one twinning boundary therein, to a plating solution comprising a reducing agent and coating metal cations comprising a different metal, under conditions to form a coating of the different metal on surfaces of the metal nanocrystals via electroless deposition by chemical reduction of the coating metal cations, thereby providing coated metal nanocrystals. Methods of forming bulk nanostructured metal alloys from the coated metal nanocrystals are also provided.

The invention discloses a high-entropy nano environmental catalytic material as well as a preparation method and application thereof, the catalytic material is prepared by taking SiO2 as a substrate and a Fe2O3-Co3O4-NiO-CuO-ZnO composite oxide as a component and adopting a combined method of magnetron sputtering coupling solvothermal, ultrasonic-assisted electrochemical deposition, microwave hydrothermal in-situ self-assembly and plasma-assisted ozonation. The catalytic material is environment-friendly, rich in active interface and high in specific surface area, can efficiently catalyze and degrade organic pollutants such as chlorobenzene at low temperature, and has a wide market application prospect.

A process for the electroless deposition palladium on a substrate, the process comprising the steps of: (a) preparing the substrate to accept electroless palladium deposited thereon; and (b) bringing the substrate into contact with an electroless palladium composition, the electroless palladium composition comprising: (i) a source of palladium ions; (ii) one or more complexing agents; (iii) a reducing agent; and (iv) a plating rate enhancer, wherein the plating rate enhancer comprises a source of antimony ions.

The invention discloses a method for preparing tellurium and cadmium by electrolyzing cadmium telluride through a solid anode, and belongs to the technical field of electrochemical metallurgy. Comprising the following steps: S1, determining an electrochemical deposition voltage: determining the deposition voltage of a solid raw material containing cadmium telluride through an electrochemical test by taking a eutectic solvent as an electrolyte; s2, a cadmium telluride electrode is prepared, specifically, a material loading cavity with an opening is formed in the inert electrode, and a solid-state raw material containing cadmium telluride is loaded into the material loading cavity to serve as an anode; s3, electrochemical deposition: taking the eutectic solvent in the step S1 as a deposition solution, taking the cadmium telluride electrode in the step S2 as an anode, matching with a cathode, ensuring that the raw materials in the material loading cavity are immersed in the deposition solution, and applying the electrolytic voltage determined in the step S1 to perform electrochemical deposition; and after deposition is finished, metal tellurium is deposited in the material loading cavity of the anode, and elemental cadmium is deposited on the surface of the cathode. The method can realize low-temperature one-step direct separation of cadmium telluride.

This invention provides a method for protecting the surface of aluminum alloys, aluminum alloy workpieces, and their applications, relating to the fields of aluminum alloy surface modification and laser protection technology. The method includes: preparation of microstructures on the aluminum alloy surface, anodic oxidation growth array, electrochemical deposition of ultraviolet absorbing particles, and sealing treatment. The dual three-dimensional structure formed by the microstructure substrate and the anodic oxidation array increases the laser contact area and extends the laser reflection path. The bismuth-doped tin oxide composite absorbing particles achieve highly efficient absorption of ultraviolet laser light, with absorption rates exceeding 95%, and significant stray light suppression.

The utility model discloses a plating layer structure for plating zinc on a cyanide-free copper-zinc alloy plating layer, which comprises an aluminum alloy substrate, and a chemical zinc deposition layer, a cyanide-free copper-zinc alloy plating layer, a potassium chloride zinc plating layer, a trivalent chromium olive green passivation film and a high-corrosion-resistance sealing layer which are sequentially prepared on the aluminum alloy substrate from inside to outside. According to GB / T 5270-2005 < GB / T 5270-2005 < GB / T > 5270-2005 < GB / T > 5270-2005 < GB / T > 5270-2005 < GB / T > < GB / T > 5270-2005 > < GB / T > 5270-2005 > < GB / T > A neutral salt spray test is carried out for 300 h according to GB / T 10125-2021 Artificial Atmosphere Corrosion Test Salt Spray Test, no corrosives are generated on the surface of the plating layer, and the corrosion resistance of the plating layer is far higher than the market requirement.

The present application relates to an unpolarized electrochemical structural color pixel. According to embodiments of the present application, the unpolarized structural color pixel can dynamically express vivid and diverse colors without depending on specific polarization (that is, under non-polarizer conditions) by integration of an electrochemical deposition-dissolution technique of a metal and a nanohole metasurface of a dielectric layer.

A process for the electroless deposition palladium on a substrate, the process comprising the steps of: (a) preparing the substrate to accept electroless palladium deposited thereon; and (b) bringing the substrate into contact with an electroless palladium composition, the electroless palladium composition comprising: (i) a source of palladium ions; (ii) one or more complexing agents; (iii) a reducing agent; and (iv) a plating rate enhancer, wherein the plating rate enhancer comprises a source of antimony ions.

The invention belongs to the technical field of electroanalytical chemistry, and particularly relates to a PtN1C3-based microelectrode as well as a preparation method and application thereof. The microelectrode comprises an electrode, a compound layer and a polymer layer, wherein the composite layer is modified on the surface of the electrode, and the polymer layer is modified on the surface of the electrode with the modified composite layer; the composite layer includes a PtN1C3 monatomic catalyst. The preparation method comprises the following steps: modifying a PtN1C3 monatomic catalyst on the surface of bare CFE by utilizing electrochemical deposition to obtain PtN1C3 / CFE; the PtN1C3 / CFE is deposited through PEDOT: TFB, and the surface of the PtN1C3 / CFE is modified with PEDOT, so that the PEDOT / PtN1C3 / CFE is obtained. The microelectrode adopts asymmetric coordination PtN1C3 as a catalyst, successfully realizes in-situ dynamic monitoring of hydrogen peroxide in cells and living brain, and has the characteristics of high sensitivity and high selectivity.

The utility model discloses a plating layer structure for plating a zinc-nickel alloy on a cyanide-free copper-zinc alloy bottom plating layer, which comprises a zinc alloy substrate, and a cyanide-free copper-zinc alloy plating layer, a zinc-nickel alloy plating layer and a trivalent chromium blue passivation film which are sequentially prepared on the zinc alloy substrate from inside to outside. According to the plating layer structure with the zinc-nickel alloy plated on the cyanide-free copper-zinc alloy bottom plating layer, the binding force of the plating layer is measured through a thermal shock test method according to GB / T 5270-2005 Metal Covering Layer Electro-Deposition and Chemical Deposition Layer Adhesive Strength Test Method on Metal Matrix, and the measurement result meets the standard requirement. The corrosion resistance is tested according to GB / T 10125-2021 Artificial Atmosphere Corrosion Test Salt Mist Test, the surface of a plated part is free of white corrosives after being subjected to a neutral salt spray test for 480 h, and a plated layer has good corrosion resistance.