1848 results about "Metal coating" patented technology

Provided herein are methods of detecting single molecules that include binding single molecules in a sample solution to a first surface of an optically transparent substrate include the optically transparent substrate is free of a metallic coating. In some embodiments, the methods include irradiating the first surface of the substrate with an incident light having an incident angle selected to achieve total internal reflection of the incident light, thereby scattering light from the first surface and from the single molecules bound to the surface in which a wavelength of the incident light is between 10 nm and 350 μm and the optically transparent substrate has a refractive index at the wavelength of the incident light exceeding that of the sample solution, and collecting an image that captures interference between evanescent light scattered from the single molecules and the first surface. Systems and additional methods are also provided.

The invention discloses a composite three-dimensional current collector prepared based on chemical plating, a metal negative electrode and a metal secondary battery, and belongs to the technical field of metal secondary batteries. The composite three-dimensional current collector comprises a nonmetal three-dimensional skeleton matrix and a metal coating which is uniformly distributed on the surface of the matrix through chemical plating. When the metal battery works, Mg, Li, Na, Ca, Zn and other metals are induced to be subjected to uniform electro-deposition and stripping on the surface of the composite three-dimensional current collector by virtue of affinity among metals, and the three-dimensional porous structure of the matrix provides a buffer space for metal deposition, so that metal ions are subjected to rapid and uniform electro-deposition; the stability of an electrode interface can be enhanced, dendritic crystal growth is reduced, the electrodeposition overpotential of metal is reduced, and the service life of a metal negative electrode is prolonged. The composite three-dimensional current collector prepared on the basis of chemical plating solves the problem of non-uniform growth of a metal negative electrode, and is an effective way for commercialized production of a metal secondary battery.

The embodiment of the invention provides a wafer electroplating method and a wafer electroplating product thereof. The method comprises the following steps: preparing a seed layer on the surface of a wafer; photoetching the seed layer to obtain a to-be-electroplated region with a preset pattern; carrying out first electroplating operation on the to-be-electroplated area at a first preset current density to obtain a metal coating; and after the first electroplating operation is finished, carrying out second electroplating operation on the to-be-electroplated area at a second preset current density so as to enable the metal coating to reach a preset thickness, wherein the second preset current density is 65 to 75 times of the first preset current density. According to the method, the adhesion of the metal coating can be effectively enhanced, the metal coating is prevented from falling off, meanwhile, the maximum current capable of being used by the second electroplating operation is improved, and therefore the total duration of the electroplating process is effectively shortened.

The invention discloses a nickel and gold electroplating method for a ceramic copper-clad substrate. The nickel and gold electroplating method sequentially comprises the following steps that S1, the ceramic substrate is covered with a complete copper surface; s2, performing film coating operation on a non-plating area, which does not need to be plated with a metal plating layer, on the copper surface, and exposing a to-be-plated area, which needs to be plated with a metal plating layer, on the copper surface; s3, the whole copper surface is electroplated, so that the to-be-plated area is fully plated with a metal plating layer; s4, carrying out film removal operation on a non-plating area on the copper surface; s5, covering an anti-etching protective film on a reserved region at least comprising the region to be plated on the copper surface, and exposing an etching region; and S6, wet etching is carried out on the copper surface, so that the copper surface in the etching region is etched. According to the invention, a metal coating with a large thickness can be electroplated, and an area corresponding to the metal coating can be formed on the copper surface.

The invention discloses high-strength concrete and a preparation method thereof in the field of concrete. The high-strength concrete is prepared from the following raw materials in parts by weight: superfine sulphoaluminate cement; coarse aggregate; quartz sand; silica fume; coal ash; nano metakaolin; silicon carbide whiskers; a graphene oxide; a pH responsive microcapsule; coating the steel fibers with liquid metal; a carbon nanotube; and a polycarboxylic acid water reducer. Release of the repairing agent is accurately regulated and controlled by adopting the pH response microcapsule, the interface performance is enhanced by combining with the liquid metal coating steel fiber, and the composite dispersion process of the nano material is optimized. Wherein the environment response efficiency of the microcapsule is remarkably improved through the collaborative design of a calcium oxide-slow release agent system and a methyl methacrylate / acrylic acid copolymerization shell layer; according to the gallium-based liquid metal coating, metallurgical bonding of fibers and a matrix is achieved through the low-melting-point characteristic, and traditional physical bonding limitation is broken through.

The subject invention is concerned with systems and methods advantageously applying finite element analysis to establish design rules for a highly sensitive piezo-resistive pressure sensor with an output that is high enough to be detectable by simple and inexpensive circuits and therefore ensure wearability. Four frequently reported micro-feature shapes in micro-patterned piezo-resistive sensors are provided, where the micro-dome and micro-pyramid yield the highest sensitivity. Investigations of different conductivity values of micro-patterned elastomers show that coating the elastomer with a conductive material (e.g., a metallic coating) leads to higher current response when compared to composited conductive elastomers. Advantageous geometric parameters and spatial configurations of micro-pyramid design of piezo-resistive sensors are provided. Results show that an enhanced sensitivity and higher current output can be achieved by a lower spatial density configuration of three micro-features per millimeter length, a smaller feature size of around 100 μm, and a 60-50 degrees pyramid angle.

The invention belongs to the field of metal coating preparation, and particularly relates to a thick coating suitable for a silicon steel surface layer and a preparation method thereof. Graphene is modified by polyethylene glycol diglycidyl ether (PEGDGE), and silver nanoparticles are combined, so that the high-conductivity antibacterial composite material is prepared. An auxiliary agent solution is rapidly synthesized by a microwave ultrasonic technology, so that the hardness and wear resistance of the coating are enhanced. And an anti-ultraviolet and chemical-corrosion-resistant additive is added into the coating, so that the durability and the service life of the coating are improved. A spraying method is adopted for uniform coating, and high-temperature curing ensures that the coating is stable. The whole process is optimized, the conductivity, the antibacterial property, the ultraviolet resistance, the chemical corrosion resistance, the hardness, the wear resistance and the like of the coating are remarkably improved, and the high-performance coating is prepared.

The invention discloses a construction method and system of a metal coating CCD detection model based on GAN, and belongs to the technical field of metal coating detection of semiconductor electronic components. An image data processing result which is output by the constructed GAN and meets a threshold range is a good product; and the processing result of the output image data exceeding the threshold range is a missing product, so that the electronic electroplating high-end quality requirement of the semiconductor electronic element is strictly managed according to the standard. Besides, the appearance, shape, color and overall morphology characteristics of the semiconductor device after electronic electroplating are simulated and monitored by adopting a plating piece total quality threshold value judgment module, the accuracy of GAN training is improved by meeting the standard that the minimum threshold value is a plating specification value-5% and the maximum threshold value is a plating specification value + 5%, training distribution of a generator and a discriminator is rapidly achieved, and the accuracy of the GAN training is improved by adopting the standard that the minimum threshold value is the plating specification value-5% and the maximum threshold value is the plating specification value + 5%. Therefore, the optimal selection standard of the CCD detection mechanism model is obtained, and the detection effect of accurately and rapidly identifying good products or missing products is achieved.

An inlet assembly of a nacelle includes an inlet cowl that has a leading edge, an outer side that extends from the leading edge to an outer aft edge, and an inner side that extends from the leading edge to an inner aft edge. An exterior surface of the inlet cowl is seamless along an entire length of the outer side from the leading edge to the outer aft edge. The inlet cowl includes a lipskin that has a metallic coating. The metallic coating defines the exterior surface of the inlet cowl along the leading edge and the entire length of the outer side.

The invention discloses a needle point coated probe and a preparation method thereof, the needle point part of the probe is subjected to surface treatment, and the probe at the position is a single probe body or a probe installed on a probe card and is subjected to surface treatment under the condition that the probe is not detached; and coating the tip part of the probe subjected to surface treatment, and coating the whole tip part with a coating to form a metal coating structure. The metal rhodium with high wear resistance and high conductivity is adopted to perform coating treatment on the needle tip part, so that the durability and the conductivity of the needle tip of the probe are enhanced, the contact resistance of the needle tip is reduced, the strength of a base material is enhanced, and the needle kneeling phenomenon is reduced; therefore, the actual performance of the probe card can be improved by processing the original probe structure, or the use performance of the probe card can be recovered by directly processing the tip of the probe of the card by recovering and reusing the failed probe card without dismounting, so that the cost is effectively reduced, and resources are recycled.

The invention relates to the technical field of paint, and discloses a preparation process and application of a salt-fog-resistant, corrosion-resistant and wear-resistant coating, and the salt-fog-resistant, corrosion-resistant and wear-resistant coating is obtained by coating a first layer with a non-metal coating, drying, coating with a metal coating, drying, and finally coating with the non-metal coating. Phosphorus elements contained in the modified phenolic resin and the quaternary ammonium salt modified cyclotriphosphazene can generate polyphosphoric acid and metaphosphoric acid which are high in dehydration property, so that the material is dehydrated and carbonized, and the flame-retardant effect is achieved. Wherein quaternary ammonium salt and imidazole groups contained in the anti-corrosion and anti-bacterial agent have good anti-corrosion and anti-bacterial effects, and after the 1-(2-ethoxyl) imidazole reacts with the hexaglycidyl cyclotriphosphazene, the substitution degree of the imidazole is improved, so that the anti-bacterial agent has more anti-bacterial groups; the phenolic resin has better wear resistance, and the wear-resistant effect of the coating is improved by adding the phenolic resin into the coating.

The invention discloses equipment and technology for plasma spray welding of a metal coating on the surface of a ball valve, and relates to the technical field of ball valve machining, the equipment comprises a base, two sliding tables, a lifting table, a clamping assembly, a guide rail mechanism, a sliding seat, a first telescopic support, a second telescopic support and a spray gun rod, the two sliding tables are symmetrically arranged on the base in a sliding mode, and the lifting table is arranged on the sliding tables; a clamping assembly is arranged on the lifting table, the guide rail mechanism is fixedly arranged at the center of the base, the sliding base is arranged above the guide rail mechanism in a sliding mode, a first telescopic support is fixedly arranged on the sliding base, a second telescopic support is vertically and fixedly arranged at the output end of the first telescopic support, and the spray gun rod is fixedly installed on the second telescopic support. The guide rail mechanism comprises a fixed table, a sliding block, a hydraulic telescopic rod, a guide block, a sleeve gasket and a connecting block. According to the method, the remodeling time and cost can be greatly reduced, the application range is effectively expanded, and the spray welding efficiency of the ball valve is further improved.

The invention discloses an annealing temperature control method based on a differentiated ohmic contact material, and aims to solve the problems that the annealing temperature of an N-surface Au / Ge ohmic contact layer of an existing AlGaInP-based red light Micro-LED is not accurately monitored, a temperature field is not uniform and is difficult to detect, and abnormal response lags, the method comprises seven steps of processes (two times of patterning, two times of metal coating, two times of photoresist removal, annealing and observation), and the annealing temperature of the N-surface Au / Ge ohmic contact layer of the existing AlGaInP-based red light Micro-LED is controlled. Preparing a first Au / Ge ohmic contact layer (for function) and a second Au / Ge / Ni ohmic contact layer (for detection) on the N surface of the wafer; by means of the characteristic that Ni inhibits Au / Ge agglomeration, the two-layer agglomeration state difference is observed through an optical microscope, and the temperature is judged (in the normal state, the former agglomerates, and the latter does not agglomerate); the method is convenient in detection, supports batch detection, can find temperature abnormity in real time, improves the process stability, and is suitable for industrial mass production.

An additive manufacturing titanium alloy fatigue performance improving method comprises the following steps that S100, additive manufacturing process parameters such as laser power, scanning speed, scanning spacing and powder laying thickness are optimized in the mode that a large number of experiments and numerical simulation are combined, and the minimum porosity and the optimal fusion effect are obtained; s200, the titanium alloy part obtained after additive manufacturing is subjected to stress relief annealing treatment under the vacuum or inert gas protection atmosphere; s300, shot blasting treatment is conducted on the part, initiation and expansion of surface cracks are effectively restrained, meanwhile, surface grains are refined, and the surface hardness and strength are improved; and S400, a ceramic coating or a metal coating is prepared on the surface of the treated titanium alloy part. According to the method for improving the fatigue performance of the additive manufacturing titanium alloy, the fatigue performance of the additive manufacturing titanium alloy is remarkably improved through comprehensive effects of multiple aspects such as internal structure optimization, residual stress elimination, surface strengthening and corrosion protection.

The invention relates to a flame-retardant breakdown-resistant metallized film and a capacitor, the flame-retardant breakdown-resistant metallized film comprises an aluminum shell, a capacitor core and an epoxy resin layer for packaging the capacitor core, and the capacitor core is formed by winding and metal spraying the flame-retardant breakdown-resistant metallized film; and preparing a metal coating on the surface of the flame-retardant modified insulating film through a vacuum coating process. According to the flame-retardant breakdown-resistant thin-film capacitor, through a manufacturing process of modifying an existing insulating base film, adding a flame retardant into polymer particles, and then spraying a corona auxiliary liquid on the thin film to be matched with corona treatment, the defects that the hot shrinkage rate of the thin film is too large and the impact strength is low due to the addition of the flame retardant can be overcome; and finally, the flame retardance and the breakdown resistance of the thin film capacitor are remarkably improved.

The invention belongs to the technical field of metal coatings, and provides a corrosion-resistant high-temperature steel composite material and a preparation method and application thereof.The preparation method comprises the steps that pure iron, ferromolybdenum alloy, ferrochrome alloy, ferromanganese alloy and ferrosilicon alloy serve as raw materials; the corrosion-resistant high-temperature steel composite material is obtained sequentially through smelting refining, casting forming, quenching and tempering heat treatment, sand blasting roughening, laser cladding, nitriding treatment and micro-arc oxidation treatment. The invention provides a full-process production method of a corrosion-resistant high-temperature steel composite material, which comprises the following steps: carrying out smelting refining, casting molding and quenching and tempering heat treatment on pure iron and an alloy material as raw materials to obtain alloy steel with better mechanical properties; and then the alloy steel is subjected to surface modification treatment by adopting combination of three processes of laser cladding, nitriding treatment and micro-arc oxidation, so that the mechanical property of an alloy steel product is further improved, and the alloy steel is endowed with excellent corrosion resistance and wear resistance.

The invention discloses a brake disc manufacturing process, and relates to the technical field of brake disc manufacturing. The brake disc manufacturing process specifically comprises the following steps that S1, a casting is purchased, and machining operation is conducted on the casting, so that an initial disc is obtained; s2, carrying out first cladding operation on the disc surface of the initial disc; according to the manufacturing process of the brake disc, while color individuation of the brake disc is guaranteed, the color of a disc body of the brake disc is guaranteed by applying a laser cladding technology, and one or more special metal or nonmetal wear-resistant layers are formed on the surface of the brake disc, so that the wear resistance and the rust resistance of the brake disc are improved, the attractiveness is improved, and the attractiveness and individuation of the brake disc are improved; the automobile brake disc is subjected to surface treatment through laser coating, the metal coating is formed, coloring agent materials such as metal or metal compounds or ceramic are added while laser coating is conducted, color changing of multiple colors can be conducted on the brake disc, and the effect that the brake disc is not discolored after long-term operation can be kept.

The invention relates to a metallized microbubble and a preparation method thereof, a construction method of a multifunctional composite probe, and a rapid bacterium capturing and sterilizing method, and belongs to the technical field of functional material preparation. The method aims at solving the technical problems that in the prior art, a metal coating on the surface of the hollow glass microbubble is not uniform, combination is not firm, and stability is poor. According to the technical scheme, the method is characterized by comprising the following steps: mixing surface-activated hollow glass microbubbles with a polyethyleneimine solution for reaction, and washing and drying to obtain polyethyleneimine-coated hollow glass microbubbles; then reacting with a single-stranded DNA buffer solution to obtain an intermediate product loaded with DNA; then introducing a silver nitrate solution to load silver ions on the surface of the compound; and finally, reducing through a sodium borohydride solution to prepare the metallized microbubbles. The metalized microbubbles prepared by the method can be used for constructing a multifunctional composite probe to realize efficient capture and synergistic antibiosis of targets such as bacteria.

The invention discloses an aluminum-based composite material, a preparation method thereof and an electronic device, and belongs to the field of electrical materials. The preparation method comprises the following steps: purifying the aluminum-based base material to obtain the purified aluminum-based base material. A metal protection layer is formed on the surface of the purified aluminum-based base material, and a first composite material intermediate is obtained; performing first electroplating treatment on the first composite material intermediate to corrode the metal protective layer so as to form a first metal coating on the surface of the aluminum-based substrate, thereby obtaining a second composite material intermediate; and the second composite material intermediate is subjected to second electroplating treatment, so that a second metal coating is formed on the surface of the first metal coating, and the aluminum-based composite material is obtained. According to the preparation method, the compactness and smoothness of the plating layer can be improved, other inert precious metals do not need to be introduced in the preparation process, and the preparation method has the advantages of being short in operation process, convenient, efficient, high in reliability, low in cost and the like.

The invention relates to the field of metal coatings, and discloses a gradient composite high-toughness wear-resistant coating and application and a preparation method thereof, the gradient composite high-toughness wear-resistant coating comprises a substrate layer, a middle layer cladded on the substrate layer and a boriding layer on the surface; the base layer is made of a FeCoCrNiTi high-entropy alloy; the middle layer comprises a plurality of laminated composite material layers, and the composite material layers contain TiB2 and FeCoCrNiTi high-entropy alloy; in the direction from the substrate layer to the boriding layer, the content of TiB2 in the composite material layer is gradually increased, and in the composite material layer attached to the boriding layer, the content of TiB2 is 16-20 wt%. The gradient composite high-toughness wear-resistant coating is suitable for strengthening agricultural soil-touching parts, resisting operation impact and reducing the abrasive particle abrasion condition, so that the service life of the soil-touching parts is prolonged, and the operation cost is reduced.

A head-mounted device may have optical modules that present images to a user's eyes. Each optical module may have a lens barrel with a display and a lens that presents an image from the display to a corresponding eye box. To accommodate users with different interpupillary distances, the optical modules may be slidably coupled to guide members such as guide rods. Actuators may slide the optical modules towards or away from each other along the guide rods. The guide rods may be formed from fiber-composite tubes with end caps that are fastened to a frame in the head-mounted device. The tubes may be partly or completely filled with cores to add strength. Low-friction coatings such as metal coatings may be formed on the fiber-composite tubes and the corresponding inner surfaces of the optical module structures that slidably engage the fiber-composite tubes.

Embodiments of the present disclosure provide methods for forming optical device structures. An exemplary method generally includes disposing a first material device layer on a substrate; patterning a portion of the first material device layer to form a first plurality of device structures in the first material device layer; disposing a second material device layer on an unpatterned portion of the first device material layer; performing a nanoimprint lithography process on the second material device layer to form a second plurality of device structures on the first material device layer; and disposing a metal coating on the second plurality of device structures.

The invention provides a laser removing method for a damaged coating on the surface of a metal base material and application of the laser removing method. The laser removing method comprises the following steps that the thickness and the shape of a damaged coating on the surface of a metal base material are obtained, working parameters of a laser device are determined, laser spots generated by the laser device are concentrated on the damaged coating area on the surface of the metal base material, and laser removing treatment is conducted; wherein the working parameters comprise laser power, laser pulse width, line spacing and laser frequency. According to the method, accurate control over the removing process can be achieved, the working parameters of the laser device are adjusted based on the parameters of the damaged coating, the cleaning depth and range can be accurately controlled, customized cleaning can be conducted according to different requirements when the damaged coating is removed, the damaged coating can be completely removed, and excessive cleaning or damage can be avoided. And for some thicker metal coatings or coatings which are difficult to remove at one time, the laser cleaning can be carried out repeatedly, and the damage to the base material is avoided.

The invention relates to the technical field of electricity testing devices, in particular to a non-contact electricity testing device for alternating current and direct current overhead line mixing and an electricity testing method.The non-contact electricity testing device comprises a moving plate and an electrode plate, the moving plate is rotationally arranged, and the moving plate and the electrode plate are arranged in the extending direction of the rotating axis of the moving plate; metal coatings are arranged on the surfaces, close to and away from the movable plate, of the electrode plates. Through the design that the moving plate and the electrode plate are arranged in the direction of the rotating axis, the double-sided metal coating structure of the electrode plate is combined, the alternating-current and direct-current electric field is detected through one device, integration of the electricity testing device is achieved, and the operation efficiency is improved.

The invention discloses a corrosion-resistant anti-static composite structure for a storage tank and a preparation method of the corrosion-resistant anti-static composite structure, a conductive grid layer is innovatively introduced into the structure, a corrosion-resistant resin coating and a corrosion-resistant anti-static metal coating are arranged at the same time, and by controlling the relative position and the section thickness size of each layer structure, the corrosion-resistant anti-static composite structure is obtained. The bonding strength of the anti-corrosion and anti-static structure and the storage tank base body can be improved, the problem that the anti-static performance of a traditional anti-static structure is low due to the fact that conductive filler is not evenly dispersed or abraded can be solved, and the anti-corrosion and anti-static storage tank has excellent, lasting and reliable anti-corrosion performance and anti-static performance; in the preparation process, by controlling the operation process and related parameters and increasing the modification process, the combination effect between the layers in the composite structure is further enhanced, and a conductive network path with excellent charge transfer capacity is constructed, so that the composite structure has high corrosion resistance and antistatic performance and long service life.

The embodiment of the invention discloses a scanning NV probe microscope which comprises an atomic force microscopy system used for detecting surface topography information of a sample and an optical detection magnetic resonance system used for detecting surface magnetic field distribution information of the sample, and the atomic force microscopy system comprises a vibration arm and a diamond probe. The optical detection magnetic resonance system comprises an NV color center, a transition excitation light path and a fluorescence detection light path; a sample to be scanned and the transition excitation light path are respectively positioned on two opposite sides of the diamond probe, and the transition excitation light path and the fluorescence detection light path are positioned on the same side of the diamond probe; a first metal coating film is arranged on one side, close to the sample, of the diamond probe and is used for blocking surface fluorescence of the sample. According to the scanning NV probe microscope provided by the embodiment of the invention, the metal coating is arranged at the bottom of the diamond probe to block stray fluorescence from the surface of the sample, so that the problems of low magnetic field imaging signal-to-noise ratio and limited measurement precision of the existing scanning NV probe microscope are solved.

The invention relates to the technical field of metal composite wires, in particular to a manufacturing method and device of a double-layer metal composite wire. The manufacturing method comprises the following steps that S1, a double-layer metal composite blank rod is taken, the double-layer metal composite blank rod comprises a core layer metal wire and a metal coating layer coating the outer side of the core layer metal wire, and the tensile strength of the metal coating layer is larger than that of the core layer metal wire; s2, the double-layer metal composite blank rod is subjected to multi-pass drawing, a composite metal wire is obtained, pulse current is applied to a metal coating layer located in a drawing area in the drawing process, the mechanical property of the metal coating layer is made to be matched with that of a core layer metal wire, and interface fracture is restrained; and S3, the composite metal wire is subjected to annealing treatment, and the composite metal wire is obtained. According to the method, the effect that only the metal coating layer is softened is achieved by controlling pulse current parameters and utilizing the skin effect and the electroplastic performance, the drawing deformation of the inner metal and the drawing deformation of the outer metal are consistent, the quality of the composite wire is improved, and the method is suitable for the situation that the conductivity of the inner-layer metal is larger than that of the outer-layer metal.

To provide a masking material capable of inhibiting a missing portion of a metal film from missing caused by residual bubbles on a surface of a substrate, and a deposition method of a metal film using the masking material.SOLUTION: A masking material includes: a mesh part 161; a mask part 162 disposed on a surface and a back of the mesh part 161 and held between an electrolyte film and a substrate; and a penetration part 163 penetrating the mask part 162 according to a prescribed pattern to expose the mesh part 161. The masking material further includes a connection passage 164 configured to connect neighboring two penetration parts 163 disposed in a part of the mask part 162 held between the electrolyte film and the mesh part 161, or a space facing an area of the substrate not forming a prescribed pattern and the penetration part 163 to circulate a plating solution.SELECTED DRAWING: Figure 2

The invention discloses a photoresist stripping method, and relates to the technical field of semiconductors. The photoresist stripping method comprises the following steps: annealing a wafer to alloy a metal coating; soaking the wafer in a first organic solvent to soften the photoresist on the wafer; a second organic solvent and a third organic solvent are sequentially used for spraying the wafer, the second organic solvent comprises N-methyl pyrrolidone, and the volatility of the third organic solvent is higher than that of the second organic solvent; and drying the wafer. According to the photoresist stripping method provided by the invention, the photoresist on the wafer can be effectively removed, and meanwhile, the corrosion of NMP to the metal coating can be relieved, so that the yield of products can be improved.

The invention discloses a seawater conductivity sensor electrode material based on a copper-nickel-based nanostructure and a preparation method, the electrode material comprises: a substrate, a copper-nickel-based nanostructure layer being formed on the surface of the substrate; the substrate comprises an insulating compound and a coating coated on the surface of the insulating compound, the insulating compound comprises at least one of high-resistance silicon, silicon oxide, aluminum oxide ceramic and plastic, the coating comprises a metal coating and / or a semiconductor coating, and the copper-nickel-based nanostructure layer is in a dendritic crystal or cluster form. The copper-nickel alloy nanostructure is a core material of the electrode, so that the electrode material has high specific surface area and rich active sites, the measurement accuracy and measurement limit of the electrode material can be improved, the service life can be prolonged, the manufacturing cost can be reduced, and the application requirements of the ocean Internet of Things can be met.