178 results about "Nickel electrode" patented technology

The invention provides a Raney nickel electrode preparation method which comprises the following steps: 1, taking nickel powder with the particle size of 15-75 microns, nickel powder with the particle size of 75-150 microns and aluminum powder with the particle size of 15-75 microns, pouring the nickel powder, the nickel powder and the aluminum powder into a mixer, uniformly mixing without segregation phenomenon, and enabling the nickel powder, the nickel powder and the aluminum powder to respectively account for 70%-79%, 1%-10% and 20%; secondly, a plasma spraying technology is adopted, the temperature is regulated and controlled, so that the nickel powder and the aluminum powder with the particle size being 15-75 micrometers reach a molten state, and the nickel powder with the particle size being 75-150 micrometers reach a semi-molten state; spraying to a nickel net, and activating, cleaning and cutting to obtain a Raney nickel electrode; the nickel powder and the aluminum powder with different particle sizes are reasonably matched in the powder formula, the particle flying speed in spraying is properly increased, the spraying temperature is balanced, the powder with different particle sizes reaches different molten states, and therefore the large-particle nickel powder forms a good support in the coating, the bonding strength of the coating is remarkably improved, and the service life of the coating is prolonged. And the catalyst is not easy to fall off in the use process, so that the efficiency and the stability of the water electrolysis hydrogen production equipment are improved.

The invention belongs to the technical field of nickel electrode slurry preparation, discloses a preparation process of ultra-fine particle size roll-printed nickel electrode slurry for an ultra-high capacity MLCC, and aims to solve the problems that in the prior art, ultra-fine nickel powder is easy to oxidize, the cost of covering nickel nitride powder is high, a covering layer is easy to damage and agglomerate during dispersion, and the performance of the slurry is poor. The method comprises three steps of raw material pretreatment, synchronization of material dispersion and nitridation, post-treatment and nitrogen protection, wherein the pretreatment is used for removing impurities and preventing oxidation, dispersion and nitridation are carried out synergistically through a sand mill and an ultrahigh-pressure homogenizer in a graded regulation and control mode, the post-treatment comprises filtering, inspection and double-layer vacuum packaging, the raw materials are prepared according to a specific proportion, key parameters are precisely regulated and controlled, and finally the slurry is prepared. Roll printing adaptability and co-firing requirements are met, independent nitridation and reduction procedures are omitted, cost is reduced, slurry uniformity, dispersion stability and MLCC reliability are improved, and large-scale mass production can be achieved.

The invention discloses a foam iron-nickel surface in-situ growth platinum modified nickel-iron layered double hydroxide bifunctional material and a preparation method and application thereof.The preparation method comprises the steps that a foam iron-nickel substrate is immersed in an acid solution containing chloroplatinic acid, heating treatment is conducted for a certain period of time, and then the nickel-iron layered double hydroxide bifunctional material is obtained; and a nickel-iron layered double-metal hydroxide mixed material modified by platinum nanoparticles grows on the surface of the foam iron-nickel in situ. In the preparation process of the one-step method, nickel ions or / and iron ion salts and sacrificial agents do not need to be additionally added, atom economy is good, reaction conditions are mild, energy consumption is low, and meanwhile the problem that the catalyst is prone to falling off due to multiple times of operation and washing is solved. The platinum / ferronickel layered bimetal hydroxide / foam iron nickel electrode prepared by the method shows excellent hydrogen production and oxygen production activity in an alkaline water electrolysis reaction.

The utility model relates to the technical field of resistors, in particular to an anti-vulcanization moisture-resistant thick-film resistor. According to the technical scheme, the resistor comprises an aluminum oxide ceramic substrate, a resistor body is printed on the upper surface of the aluminum oxide ceramic substrate, front electrodes are printed at the two ends of the resistor body, extending parts of the two ends of the resistor body are covered with the front electrodes, back electrodes are printed on the lower surface of the aluminum oxide ceramic substrate, and the aluminum oxide ceramic substrate is provided with side electrodes. The front electrode, the back electrode and the side electrode are all silver electrodes, a nickel electrode is arranged outside the silver electrodes, a tin electrode is arranged outside the nickel electrode, and a first anti-vulcanization layer is arranged between the silver electrode and the nickel electrode at the two ends of the resistor body. A second anti-vulcanization layer is arranged between the nickel electrode and the tin electrode at the two ends of the resistor body, and a first protective layer and a second protective layer are arranged on the surface of the resistor body.

The invention discloses a method for preparing a graded porous nickel electrode by step-by-step dealloying and application thereof, and the method comprises the following steps: spraying a nickel-aluminum material on a nickel-based substrate to obtain a first intermediate product; performing heat treatment on the first intermediate product to obtain a second intermediate product; the second intermediate product is sequentially placed in alkali liquor with different concentrations for step-by-step activation, and the graded porous nickel electrode is obtained; in the step of step-by-step activation, the concentration of the alkali liquor is gradually reduced, and the activation temperature is gradually reduced. According to the graded porous nickel electrode, the efficient mass transfer rate and catalytic efficiency are guaranteed; the bonding strength between the coating and the substrate is high, the interlayer structure is stable, the mechanical property and stability are good, and the service life is long; and the hierarchical porous structure can be constructed only through step-by-step activation, so that the preparation process is remarkably simplified.

The invention discloses a praseodymium-copper heterogeneous catalyst for synthesizing a multi-carbon alcohol product through efficient electroreduction of carbon dioxide and a preparation method of the praseodymium-copper heterogeneous catalyst. The praseodymium-copper heterogeneous catalyst is a composite material of praseodymium oxide and copper oxide, and praseodymium, copper and oxygen are uniformly distributed in the praseodymium-copper heterogeneous catalyst; the praseodymium oxide is an oxide with the praseodymium-oxygen molar ratio of 6: 11; the molar ratio of praseodymium to copper is not less than 2. The invention provides a method for preparing a multi-carbon alcohol product by electrocatalytic reduction of carbon dioxide, which comprises the following steps: by taking a mercury / mercuric oxide electrode as a reference electrode, a foamed nickel electrode as a counter electrode and a praseodymium-copper heterogeneous catalyst as a working electrode, carrying out electrochemical reduction in a gas diffusion type flowing electrolytic tank to obtain the multi-carbon alcohol product. The praseodymium-copper heterogeneous catalytic material is designed, and the interaction relationship between metal and a carrier and between the metal and the carrier and a reaction intermediate in the catalyst is adjusted by introducing the rare earth element praseodymium, so that the reaction activity and the target product selectivity are improved.

The invention discloses a ruthenium and samarium double monatomic doped three-dimensional titanium-based tin antimony nickel electrode and a preparation method and application thereof. The preparation method of the electrode comprises the following steps: (1) pretreating the titanium felt; (2) preparing a sol impregnation liquid; (3) sol coating and drying: dipping the pretreated titanium felt in the prepared sol dipping liquid, fully adsorbing and then drying to form a uniform precursor layer; and (4) roasting treatment is conducted, specifically, the dried titanium felt is placed in a muffle furnace to be roasted, and then the steps of dipping, drying and roasting are repeated till the final ruthenium and samarium double monatomic doped three-dimensional titanium-based tin-antimony-nickel electrode is obtained. In the prepared electrocatalyst, ruthenium and samarium are doped into a tin-antimony-nickel electrode in a monatomic form, the utilization efficiency of ruthenium and samarium atoms is improved, and the electrode is endowed with excellent electrocatalytic activity. The unique three-dimensional structure and double-monatomic doping significantly enhance the electron transfer rate and the reaction kinetic characteristics, so that the electrode shows excellent stability and efficient hypochlorous acid generation ability.

The invention provides a spraying-free Raney nickel electrode preparation method, a Raney nickel electrode and hydrolysis hydrogen production equipment, and relates to the field of Raney nickel electrodes. The preparation method comprises the following steps: mixing raw materials including aluminum powder, a dispersing agent, a binder and water to obtain raney nickel electrode slurry; coating the Raney nickel electrode slurry on a nickel net and drying to obtain a pretreated electrode; calcining the pretreated electrode net under inert gas protection or a vacuum condition to obtain an unactivated nickel-aluminum alloy net; and activating the unactivated nickel-aluminum alloy net to obtain the Raney nickel electrode. According to the preparation method provided by the invention, the precursor of the Raney nickel electrode is prepared in a slurry brushing manner, so that the consumption of powder is greatly reduced, and waste is reduced. A nickel-aluminum alloy phase is grown on the nickel net in situ in a powder metallurgy mode, and the nickel-aluminum alloy has very excellent binding force.

The invention discloses conductive paste, a crystalline silicon solar cell and a preparation method of the crystalline silicon solar cell, and belongs to the technical field of photovoltaic cells. The conductive paste comprises glass powder which accounts for 1.5 wt%-6 wt% of total solids in the conductive paste; an organic carrier accounting for 9 wt% to 15 wt% of total solids in the conductive paste; a first conductive metal, which accounts for 70 wt% to 88 wt% of total solids in the conductive paste; a second conductive metal which accounts for 1 wt% to 10 wt% of the total solid content in the conductive paste; wherein the specific surface area of the second conductive metal is larger than 0.5 m < 2 > / g and smaller than 1.8 m < 2 > / g, and the second conductive metal is selected from nickel or nickel alloy. The nickel or the nickel alloy with the specific surface area is adopted to replace part of silver, the influence on the density of a sintered silver structure and the conductivity of a silver / nickel electrode can be reduced, the photoelectric conversion efficiency of the solar cell can be maintained by adding the nickel powder, and the preparation cost of the solar cell can be reduced by reducing the use amount of the silver.

The invention discloses a method for preparing a Raney nickel electrode through electro-deposition of nickel-zinc alloy and application. The method comprises the steps that a nickel-based substrate is pretreated; the pretreated nickel-based substrate serves as a cathode, an electrochemical deposition reaction is carried out in an electrolytic bath containing electroplating liquid, and the electroplating liquid comprises nickel salt and zinc salt; carrying out heat treatment on the nickel-based substrate subjected to electrochemical deposition; and activating the nickel-based substrate subjected to heat treatment to remove the zinc element to obtain the Raney nickel electrode. According to the Raney nickel electrode, valence electrons can be redistributed by depositing the nickel-zinc alloy phase on the nickel substrate, so that electron transmission is accelerated, and the conductivity of the electrode is improved; the nickel-zinc alloy is slow and uniform in reaction in the activation process, nickel-zinc crystal nucleuses can be uniformly nucleated and grow, and a uniform pore structure can be formed after activation, so that the active area of the catalyst is greatly increased, and the hydrogen reaction rate is increased.

The invention provides a preparation process method of a porous nickel-loaded hydrogen evolution electrode. The preparation process method of the porous nickel-loaded hydrogen evolution electrode comprises the step of loading a nickel-zinc alloy on a substrate through an electroplating process, zinc is reacted and leached through an alkaline activating solution, and the porous nickel electrode is obtained. A nickel-zinc alloy is loaded on a substrate through an electroplating process, and zinc is leached by reaction through an alkaline activating solution, so that the porous nickel electrode is obtained, and the technical problem that an efficient hydrogen evolution electrode is lacked in the prior art for hydrogen production by alkaline electrolysis of water is solved.

The invention relates to the technical field of furnace control, in particular to an intelligent control method for a nickel electrode atmosphere tunnel furnace, which comprises the following steps of: independently controlling the temperature of a temperature area by adopting a PID (Proportion Integration Differentiation) technology through full-automatic PLC (Programmable Logic Controller) control, acquiring the temperature data of the area in real time, setting primary temperature control parameters in the furnace, confirming the stable operation of basic temperature control, and generating temperature control baseline data. According to the invention, the temperature of the temperature zone is monitored in real time and accurately adjusted, so that fine granularity management of temperature control is realized, energy distribution in the furnace is optimized, energy efficiency is improved, and through integration of infrared and microwave technologies, energy output is adjusted, changes of the environment in the furnace are directly responded, material processing quality is improved, and chemical reaction is accurately controlled. By adjusting the gas flow rate and proportion, the accuracy and balance of chemical reaction are ensured, the energy consumption and the operation complexity are obviously reduced, the control strategy is dynamically adjusted, the production process is optimized according to the comparison between the actual output and the target value, and the high-efficiency and high-quality output is ensured.

The invention discloses an activation-free porous nickel catalytic electrode material and a preparation method and application thereof, and belongs to the technical field of electrocatalysis, the preparation method comprises the following steps: dispersing a pore-forming agent in a nickel sulfate solution, and reacting to obtain nickel-coated pore-forming agent composite powder; spraying the nickel-coated pore-forming agent composite powder serving as an electrode coating onto a nickel net base material to obtain a composite electrode; carrying out roasting treatment on the composite electrode so as to burn out the pore forming agent in the electrode coating; and putting the roasted composite electrode into a reduction solution, and reacting to obtain the activation-free porous nickel catalytic electrode material. The method effectively avoids the problem of waste alkali liquor treatment in the preparation process, is more environment-friendly and lower in cost, and also avoids the problems of diaphragm blockage and voltage rise caused by dissolution of residual metal aluminum after long-term operation. A developed pore structure is constructed in the nickel electrode coating through heat treatment and liquid phase reduction, the electrode has high porosity and rich active sites, and transfer of electrons and mass transfer of electrolyte are effectively enhanced.

The invention belongs to the technical field of electrode plates, and particularly relates to a high-activity binary alloy hydrogen evolution electrode plate and a preparation process method. The preparation process method comprises the following steps: obtaining a metal nickel electrode substrate and white corundum sand with different particle sizes; carrying out cleaning treatment on the metal nickel initial electrode substrate; the pretreated metal nickel initial base body serves as a working electrode, and sand blasting pretreatment is conducted on a metal nickel electrode base body through white corundum sand; dust removal operation is conducted on the metal nickel electrode base body subjected to sand blasting pretreatment; and spraying binary metal alloy powder on the intermediate hydrogen evolution electrode plate through an atmospheric plasma spraying process to form the high-activity binary alloy hydrogen evolution electrode plate. The whole preparation process method sequentially comprises the steps of cleaning treatment, sand blasting pretreatment, atmospheric plasma spraying, natural cooling and the like, the process method for preparing the electrode plate is optimized, it is guaranteed that the electrode plate has excellent long-time hydrogen evolution stability when the electrode plate is subjected to a hydrogen evolution reaction, and the excellent hydrogen production effect can be achieved.

The invention discloses a three-dimensional porous sulfur-doped tin-antimony-nickel electrode and a preparation method and application thereof.The specific operation process includes the steps that a carrier is pretreated, the titanium carrier is used as a substrate, a sulfur-containing surfactant and tin-antimony-nickel metal salt are used as precursors, absolute ethyl alcohol and hydrochloric acid are used as solvents, and the three-dimensional porous sulfur-doped tin-antimony-nickel electrode is obtained; loading a sulfur-containing nanoparticle precursor material on the surface of the titanium carrier through a hydrothermal method; and drying the hydrothermal precursor material, and roasting in a muffle furnace to finally obtain the three-dimensional porous sulfur-doped tin-antimony-nickel-titanium substrate electrode. The catalyst disclosed by the invention has a three-dimensional porous spherical structure, the active specific surface area is obviously increased, the path of diffusing reactants to active sites is effectively shortened, the mass transfer resistance is reduced, the transfer of electrons and protons is promoted, and the reaction performance is improved. Sulfur doping not only improves the electrochemical reaction rate, conductivity and stability, but also shows high activity and high Faraday efficiency in electrocatalytic ozone production and chlorine evolution reactions.

The invention relates to an activation method of a Raney nickel electrode and the Raney nickel electrode. The activation method comprises the steps of electrode preparation, high-temperature hot alkali treatment, electrochemical anode activation and cleaning and post-treatment. Wherein in the high-temperature hot alkali treatment, a nickel-aluminum alloy sheet is placed in a sodium hydroxide solution with specific concentration and temperature to dissolve surface aluminum to form a primary porous structure; electrochemical anode activation is carried out by taking the treated electrode as an anode and an inert material electrode as a cathode, and deep aluminum is further removed under specific potential and time; and finally cleaning and drying to obtain the activated electrode. Compared with the prior art, the method utilizes the synergistic effect of high-temperature hot alkali and electrochemistry, overcomes the problem that deep aluminum is not dissolved thoroughly in traditional hot alkali treatment, can greatly shorten the activation time, reduce aluminum residues and protect the electrode structure, has the advantages of simplicity in operation, environmental protection, high efficiency and the like, improves the catalytic performance and stability of the Raney nickel electrode, and is suitable for industrial production. The method is suitable for industrial production application.

The invention discloses a Raney nickel electrode for producing hydrogen by electrolyzing water and a preparation method of the Raney nickel electrode. The preparation method comprises the steps of electro-deposition of a porous nickel substrate, electro-deposition of a nickel-zinc alloy on the porous nickel substrate, chemical dezincification activation of the nickel-zinc alloy, electro-curing of the activated Raney nickel electrode and the like. Through a technical route of combining electro-deposition and activation curing treatment, on the basis of ensuring high catalytic activity and high specific surface area, controllable design of a microstructure is realized, and the mechanical strength and stability of the electrode are remarkably improved. The Raney nickel electrode prepared by the invention is suitable for a water electrolysis hydrogen production process, and especially shows excellent durability and electro-catalytic performance under complex industrial conditions such as large current, high temperature and high voltage.

The invention provides a modification method for improving the performance of Raney nickel electrolyzed water, which comprises the following steps: pre-treating a nickel net, washing the nickel net with alkali, and putting the nickel net into absolute ethyl alcohol for later use; spraying a nickel net, oxidizing the nickel net, carrying out plasma spraying on the nickel net by using powder, roasting at high temperature, and finally activating to obtain the Raney nickel electrode. According to the Raney nickel electrode, the aluminum powder and nickel oxide on the nickel base material can be fully fused through an aluminothermic reaction technology, and the activity of the obtained nickel net after activation is greatly improved compared with that of a traditional Raney nickel electrode; according to the method, nickel powder does not need to be additionally sprayed, the raw material cost in the Raney nickel electrode production process is greatly reduced, operation is easy, and implementation is easy.

The invention relates to a preparation method of a nickel-chromium-iron alloy consumable electrode, the consumable electrode and an alloy ingot. The method comprises the steps that an electrolytic nickel plate is subjected to vacuum melting under the condition that the vacuum degree is smaller than or equal to 0.67 Pa, after the electrolytic nickel plate is melted down, the vacuum degree is kept to be smaller than 2 Pa and lasts for 5 min to 10 min, and a nickel melt with the lead removal rate larger than or equal to 60% is obtained; pouring the nickel melt into a pure nickel electrode under a vacuum condition; combining the pure nickel electrode with industrial pure iron to form an iron-nickel composite electrode; with the iron-nickel composite electrode as a consumable electrode, ferrochrome is added into a lined electroslag furnace for smelting, and a high-temperature metal melt is obtained; the high-temperature metal melt is tapped to a steel ladle, and argon is blown to the bottom of the high-temperature metal melt in the steel ladle for 3-5 min; and the high-temperature metal melt obtained after bottom argon blowing is poured into the consumable electrode. According to the method, five types of fusible elements including Pb, Bi, Sn, As and Sb are systematically and gradually reduced to be extremely trace by coupling three steps of vacuum volatilization, deep electroslag separation and secondary ladle refining.

Provided is a preparation process for 10T large single weight wide nickel coil, based on a vacuum consumable arc furnace, a secondary melting method is used for melting the prepared large single weight nickel electrode, and the technical parameters during melting are optimized and improved, solving the problems of large single weight nickel coil preparation difficulty, easy to produce pores, inclusions and deep shrinkage holes under the traditional preparation process, the preparation process is simple, the cost is low, the quality and yield of the nickel ingot after melting are improved, so that the quality of the nickel coil is guaranteed, and the preparation of large single weight high quality wide nickel coil products is especially suitable.

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

The invention provides a nickel electrode with a multi-level structure and a preparation method thereof. The preparation method mainly comprises the following steps: preparing a bottom-layer concave-convex substrate structure by mixed acid dipping, and forming a middle layer and a catalyst layer structure by surface heterogeneous growth. According to the method, tight combination of the catalyst layer and the substrate is taken as a guide, the uneven nickel metal substrate is obtained through mixed acid etching aiming at the problem that the catalyst is prone to falling off, and a highly rough surface is provided for in-situ growth of a subsequent columnar middle layer. The nickel metal substrate and the nanoflower layer catalyst are connected through the middle layer, the binding force of the catalyst and the substrate is effectively increased, the catalyst is prevented from falling off, and industrial stable water electrolysis is achieved. The surface of the synthesized nickel electrode with the multi-level structure has excellent performance stability, the overpotential is only increased by 8 mV when the nickel electrode runs for 1000 hours under the current density of 500 mA cm <-2 >, and only 1.83 V is needed when the nickel electrode is in an electrolytic bath.

Provided is a method for producing fluorine gas that does not readily generate mist. The fluorine gas is produced by a method provided with an electrolysis step in which the fluorine gas is generated by electrolyzing an electrolyte solution using an anode and a cathode in an electrolytic cell. And the electrolyte contains hydrogen fluoride, metal fluoride and hexafluoronickel (IV) acid metal salt. The anode is a nickel electrode or a carbonaceous electrode, and the cathode is a metal electrode.

In the present invention, a slurry for a second cathode mixture is applied to both edge regions of an electrode sheet holing portion during storage of an electrode sheet having a high content of nickel, wherein the edge regions are vulnerable to moisture penetration and high in rolling reduction ratio and the slurry contains a cathode active material more resistant to rolling than that applied to the center region of the holding portion, whereby the reactivity of nickel and moisture is suppressed as much as possible to improve the lifespan characteristics of the battery.

The application provides a high-porosity Raney nickel electrode and a preparation method thereof, and relates to the technical field of Raney nickel electrodes and preparation thereof. The preparation method of the high-porosity Raney nickel electrode effectively controls the dealuminization rate and the pore uniformity through a preparation process of'sintering treatment + special electrochemical dealloying treatment', and stably prepares the high-porosity Raney nickel electrode. A new process for preparing the high-porosity Raney nickel electrode in an environmentally friendly manner is provided, which replaces the traditional corrosion pore-forming process of a strong alkaline chemical solution and reduces pollution. The prepared high-porosity Raney nickel electrode has a high porosity of up to 52%, and the pore structure is stable, so that the catalytic activity and mechanical stability of the electrode are effectively improved.

This invention relates to the field of nickel electrode paste preparation technology, and discloses an ultrafine roller-printed nickel paste for ultra-high capacitance MLCCs and its preparation method. The nickel paste includes nickel powder, Ni3Sn-coated nickel powder, diffusion barrier phase, resin, solvent, dispersant, and rheology modifier. The Ni3Sn-coated nickel powder is obtained by chemical plating, where Sn is bonded to Ni in the form of an intermetallic compound. The diffusion barrier phase is selected from nano-ZrO2 or TiO2 particles. After pre-dispersing each solid component with a portion of the dispersant and solvent, the mixture is ground and dispersed using a gradient grinding process, then mixed with an organic carrier to form a paste. After vacuum degassing and filtration, the nickel paste is obtained. This invention uses Ni3Sn-coated nickel powder to replace elemental Sn powder, inhibiting the formation of a dense SnO2 passivation layer. Combined with the blocking effect of the diffusion barrier phase at the grain boundaries and the protection of the coating layer integrity by the gradient grinding process, this invention solves the problem of long-term reliability degradation of MLCCs caused by Sn storage.

The invention relates to a method for preparing a flexible thin film thermocouple through silk-screen printing. The preparation method comprises the following steps: mixing and stirring a copper precursor, a nickel precursor and metal particles in an alcohol solvent; processing the obtained mixture on a substrate in a silk-screen printing manner; heating and sintering the obtained substrate in an inert atmosphere to obtain a copper-nickel electrode; the copper precursor and copper particles are mixed and stirred in an alcohol solvent, and copper electrode slurry is obtained; aligning the obtained copper-nickel electrode with a corresponding hot node of a silk-screen printing plate, coating the silk-screen printing plate with the obtained copper electrode slurry, and carrying out silk-screen printing to obtain a copper electrode pattern; and heating and sintering the copper electrode pattern in an inert atmosphere to obtain the flexible film thermocouple. According to the method, the flexible film thermocouple which is high in material utilization rate, simple in processing technology, low in equipment requirement and excellent in sensing performance can be rapidly prepared.

Provided is a device for producing an electrolyte solution for fluorine gas production having a low vapor pressure of hydrogen fluoride gas. An electrolyte solution production device (1) is provided with: an anode (3) having a nickel electrode (31) and a carbon electrode (32); a cathode having a metal electrode; and an electrolyte solution production tank (2) capable of accommodating a liquid to be treated (8) containing potassium fluoride and hydrogen fluoride and performing electrolytic treatment of the liquid to be treated (8) using the anode (3) and the cathode (4). The electrolyte solution production device (1) has a configuration capable of applying a direct current to both the nickel electrode (31) and the carbon electrode (32).

The present invention belongs to the field of electrode material technology, and provides a titanium-based platinum-nickel electrode material, a preparation method thereof, and an application thereof. The method comprises the following steps: sequentially performing a first anodization and a second anodization on a titanium sheet in an ammonium fluoride solution to obtain an oxidized titanium sheet; calcining the oxidized titanium sheet to obtain a titanium sheet containing a titanium dioxide layer; and electro-depositing the titanium sheet containing the titanium dioxide layer in a platinum-based electrolyte to obtain a titanium-based platinum-nickel electrode material. The titanium-based platinum-nickel electrode material prepared by the present invention effectively reduces the usage of Pt-based precious metals, and can maintain high activity and stability to generate hydrogen peroxide online under neutral conditions; its cathode current density efficiency reaches 76.40%, its anode current density efficiency reaches 70.23%, and its dual capacitance value is 1.33mF·cm ‑2 It is 4.2 times the dual capacitance value of titanium-based platinum-nickel electrode materials obtained without anodic oxidation, and has good prospects for industrial application.

The invention discloses a method for preparing a porous nickel electrode by electrodepositing nickel-zinc-phosphorus alloy, which comprises the following steps: taking a nickel-based substrate as a cathode, and carrying out electrochemical deposition reaction in an electrolytic bath filled with an electroplating solution which comprises nickel salt, zinc salt and a phosphorus source; carrying out heat treatment on the nickel-based substrate subjected to electrochemical deposition; and the nickel-based substrate subjected to heat treatment is put into alkali liquor to be activated. The phosphorus source is introduced into the electroplating solution, the phosphorus element can be doped into alloy crystal lattices, and the dissolution efficiency of zinc is improved during activation, so that the residual quantity of the zinc element is effectively reduced, the activation time is shortened, sufficient formation of a porous structure is facilitated on the premise of ensuring the uniformity of the porous structure, the catalytic performance of the electrode is improved, and the service life of the electrode is prolonged. And the residual zinc element is prevented from polluting the electrolyte.