74results about How to "Reduce hydrogen evolution overpotential" patented technology

The invention relates to a hydrogen evolution electrode with copper and cobalt loaded on three-dimensional foamed nickel, which can be used for an electro-catalysis hydrogen evolution reaction in alkaline solution and is capable of simultaneously loading base metals and a preparation method thereof, and belongs to the technical fields of material science and hydrogen production by electro-catalysis. The technical problem to be solved is to provide the composite hydrogen evolution electrode with copper and cobalt loaded on three-dimensional foamed nickel and a preparation method thereof. A method of plating a composite coating on an electro-mechanical surface is adopted, and copper and cobalt are electro-plated on the three-dimensional foamed nickel in sequence, so that the composite hydrogen evolution electrode is prepared. The prepared electrode has high catalytic activity, is non-toxic, and can keep stable structure and chemical activity under an alkaline condition. In addition, the preparation process of the composite hydrogen evolution electrode is simple, and is suitable for large-scale production.

The invention discloses a negative plate of a secondary nickel-iron battery, a preparation method of the negative plate and a secondary nickel-iron battery of using the negative plate and belongs to the technical field of negative electrode materials for secondary nickel-iron batteries. According to the main points of the technical scheme, a negative active material in the negative plate of the secondary nickel-iron battery comprises an additive zinc-based multilayered hydroxide [ZnxMyM'z(OH)2].[(A<a->)n.mH2O]. The invention further particularly discloses a preparation method of the negative plate of the secondary nickel-iron battery and the secondary nickel-iron battery of using the negative plate. By adopting the novel negative plate of the secondary nickel-iron battery, the energy density and the rate capability of the secondary nickel-iron battery can be greatly improved and the cycle life of the secondary nickel-iron battery can be greatly prolonged.

The invention provides a catalyst used for the preparation of hydrogen through water electrolysis. The catalyst is amorphous Ni-B, and an atom ratio of Ni to B is 1.0-5.0. The invention also provides a preparation method for the catalyst. The method is characterized in that Ni-B is loaded on the surface of a carrier through a chemical plating method, and the feeding atom ratio of B to Ni in a chemical plating liquid is 3.0-10.0. The amorphous Ni-B is successfully applied in the catalysis of a hydrogen evolution reaction through water decomposition, and the reaction activity of the amorphous Ni-B can be comparable with that of platinum. The amorphous Ni-B has the advantages of low hydrogen evolution over-potential, high catalytic efficiency, stable performances, low price and simple preparation, and becomes one of the most ideal catalysts for substituting the present noble metal Pt catalyst.

The invention relates to a porous nickel composite electrode, which comprises a substrate nickel plate, and LaNi5 particles adhered to the substrate nickel plate. An electroplating solution for preparing the porous nickel composite electrode comprises the following components: NiSO4 . 6H2O: 300 g . L<-1>, NiCl2 . 6H2O: 50g . L<-1>, H3BO3: 40g . L<-1>, aluminum powder: 30g . L<-1> and LaNi5 particles: 25g . L<-1>, and the pH is 4.0 to 5.0. A hydrogen storage alloy LaNi5 and Al particle capsules are embedded into a plating layer on a substrate Ni by one-step composite electrodeposition to obtain an Ni / (LaNi5 + Al) precursor, and then aluminum in the plating layer is dissolved by an alkali dissolving method. The porous nickel composite electrode prepared by the invention has the advantages of larger specific surface area, lower hydrogen evolution overpotential, excellent hydrogen evolution electrocatalytic properties, and excellent outage resistance and corrosion resistance, i.e., excellent stability property.

The invention discloses a method for preparing a high-efficiency long-life porous nickel-molybdenum alloy for hydrogen production by water electrolysis. The method adopts a powder metallurgy atmosphere sintering method, Mg powder is used as a pore-forming agent, ultra-fine Ni, Mo powder and Mg powder with different content ratios are subjected to ball milling and then press forming, and the porousnickel-molybdenum alloy is prepared by sintering in a high temperature atmosphere. The porous nickel-molybdenum alloy has the advantages of three-dimensional open-cell structure, high permeability, and large specific surface area, and multi-component composite hydroxide active sites with high catalytic performance can be formed on the surface of the alloy in a long-term hydrogen evolution processin an alkaline solution, so that the alloy is suitable for hydrogen evolution electrodes for hydrogen production by water electrolysis.

The invention provides a preparation method of a sponge-structured alloy ternary oxide layer-loaded hydrogen evolution electrode material. The preparation method specifically comprises the following preparation processes: a process of electrically depositing an organic solvent of a La-Y base layer of a sponge structure, a process of electrically depositing a Ni-Cu middle layer on the surface of the La-Y base layer, a process of electrically compositing and depositing Ni-Cu and RuO2 particles on the surface of the Ni-Cu middle layer, a process of performing atomic diffusion treatment, and a process of anodizing a sponge-structured Ni-Cu-La-Y alloy base body-loaded RuO2 layer. The novel hydrogen evolution electrode material prepared by the preparation method disclosed by the invention is high in chemical stability and electrocatalytic activity, has excellent low hydrogen evolution overpotential and high specific surface area, and can be applied to large-scale industrial production for preparing hydrogen by low-energy-consumption water electrolysis.

The invention provides a composite electrode for electrodialysis, which has low hydrogen evolution over-potential and low oxygen evolution over-potential, as well as a preparation method and an application thereof. A metal oxide material is deposited and prepared on the surface of a conductive base / graphene electrode through an electrolytic deposition method, so that a conductive base / graphene electrode / metal oxide composite electrode is obtained. The method provided by the invention is simple and easy to operate and low in preparation cost; the prepared composite electrode has good chemical stability and electrochemical stability, and also has good electrocatalytic properties and conductivity and a long service life. The composite electrode provided by the invention has the very low hydrogen evolution over-potential and oxygen evolution over-potential and can be used for carrying out a linear circulating volt-ampere test in a 0.5M H2SO4 solution; and under the condition of 10mAcm<-2>, the hydrogen evolution over-potential can be as low as 100mV and the oxygen evolution over-potential can be as low as 260mV.

The invention discloses a preparing method of polytetrafluoroethylene / polyaniline electroconductive plastic modified by expanded graphite. Polytetrafluoroethylene is compound with polyaniline, and at the same time, the expanded graphite and nano-silver are added for modification. The prepared material is good in electric-conducting property and heat-conducting property, good in anti-corrosion property, easy to process and form, low in cost, and easy to obtain, and can be used as cathode material to absorb pollutants in water.

The invention discloses a preparation method of a porous nickel base alloy electrolysis hydrogen evolution cathode material. The preparation method is characterized in that four kinds of high-purity element powder, by mass percent, namely, 20-42% of Cr, 4-12% of Fe, 1-6% of Co and the balance Ni are mixed uniformly and dried, then compression moulding is carried out and thus a green body is obtained, and by using the solid phase partial diffusion principle, the green body is subjected to vacuum sintering, and a Ni-Cr-Fe-Co porous material is synthesized after reaction. The prepared porous material has the advantages of high specific surface area, low hydrogen evolution overpotential, relatively excellent corrosion resistance, good chemical stability, high mechanical strength and the like, and the preparation method is simple and environment-friendly, and has great significance in the development and application of hydrogen energy.

The invention discloses synthesis and application of a nano carbon fiber electrocatalyst containing cobalt-molybdenum oxide. The synthesis is characterized in that a cobalt nitride-phosphomolybdenum polyacid ion crystal compound is firstly synthesized, is mixed with polymer polyacrylonitrile for electrostatic spinning, and is roasted to synthesize nano carbon fibers containing cobalt-molybdenum oxide. As an electrocatalyst, the nano carbon fiber electrocatalyst containing cobalt-molybdenum oxide has very catalytic activity, has catalytic activity under different acid and alkaline conditions, and can be used in hydrogen evolution and oxygen evolution fuel cells.

The invention discloses a lead-carbon battery negative electrode additive and an electrode plate preparation method thereof. The additive is a Pb-C-SiO2 compound which is prepared with constant current electrodeposition; and an electrode plate is composed of lead powder, Pb-C-SiO2, humic acid, short fibers, barium sulfate, sodium lignosulphonate and acetylene black. Different from the traditionallead-carbon compound additive, for the lead-carbon battery negative electrode additive, on the past basis, silicon dioxide nanoparticles are added; and nanometer silicon dioxide can store an electrolyte, and the solution stored by the nanometer silicon dioxide can provide more sulfate ions for a carbon material with high reactive sites along with electrochemical circulation of a negative electrode, so that the conversion rate of lead sulfate is accelerated, and the adaptive capacity of the electrode at high current density is improved. The electrode plate which is composed by the compound provided by the invention, the effective utilization ratio of the active substances can be effectively increased, the negative electrode sulfation phenomenon under high-rate partial-state-of-charge is relieved, and the cycle life of the battery is prolonged.

The invention discloses a nano-porous Al-Ni-M-RE-R amorphous alloy used as a hydrogen evolution catalytic electrode, wherein a transition metal element M is Fe, Co, Cr and Cu, a rare earth element REis Y, La, Gd and Ce, a precious metal R is Pt, Ru, Pd, Rh, Au and Ir, and a hydrogen evolution catalytic electrode comprises the following components in percentage by mass: Al, 2-12% of Ni, 1-13% of M, 2-13% of RE, and 0.2-7% of R, and is treated by adopting a constant current method, a corrosion method or a pulse corrosion current method, so that the prepared nano porous amorphous alloy is stablein structure, large in specific surface area, adjustable in component, structure and morphology and high in catalytic activity. According to the invention, when the nano-porous amorphous alloy hydrogen evolution electrode is used as a water electrolysis hydrogen evolution catalytic electrode, the hydrogen evolution overpotential is 40-65 mV and the Tafel slope is 10-60 mV / dec under the current density of 10 mA.cm<-2>, so that the nano-porous amorphous alloy hydrogen evolution electrode has excellent hydrogen evolution catalytic activity.

The invention provides a Ni-Fe-Mo-Mn porous material. The Ni-Fe-Mo-Mn porous material is prepared by the steps of accurately weighing 15 to 21 percent of ferro-molybdenum, 11 to 16 percent of ferro-manganese, 7 to 9 percent of iron powder the balance of nickel, preparing pre-alloyed powder by adopting an atomization technology and sintering in vacuum. The porous material prepared by the inventionhas abundant, uniform and controllable pores and has the advantages of large specific surface area, low hydrogen evolution overpotential, good catalytic performance, good corrosion resistance, stableworking performance, simple and environment-friendly preparation technology and the like; the preparation cost is low and the technology is simple and easy to realize. The porous material prepared bythe invention can be used as the electrolytic hydrogen evolution cathode material.

The invention discloses a preparation method of a Ni-Fe-Mo-Cu porous material. The preparation method comprises the following steps: uniformly mixing powder with the granularity of 3 to 10mu m of fourtypes of high-purity elements including Ni, Fe, Mo and Cu according to the mass percent ratio of 15 to 35 percent of the Fe, 1 to 8 percent of the Mo, 1 to 7 percent of the Cu and the balance of theNi, and drying; then doping stearic acid and pressing and molding to obtain a green body; carrying out vacuum sintering on the green body by utilizing a solid-phase partial diffusion principle to prepare the Ni-Fe-Mo-Cu porous material. The porous material prepared by the preparation method has the advantages of abundant and uniformly-distributed pores, relatively high specific surface area and mechanical strength, relatively low hydrogen evolution overpotential and relatively good corrosion resistance property and chemical stability; a preparation technology is simple and environmentally friendly, has potential application value in the fields of electrolysis hydrogen evolution and industrial filtering and has great significance.

The invention discloses a nickel-based electrolysis hydrogen evolution porous cathode material and a preparation method thereof. The preparation method comprises the following steps that high-purity Ni powder, high-purity Fe powder, high-purity Mo powder and high-purity Mn powder are mixed uniformly, the mixture comprises, by mass, 10-15% of Fe, 10-15% of Mo, 5-15% of Mn and the balance Ni, and after the mixture is added with glue, dried and then pressed and formed into blanks, based on the principle of a solid-phase deviation diffusion, a vacuum sintering reaction is carried out on the blanksto synthesize a Ni-Fe-Mo-Mn porous material. According to the nickel-based electrolysis hydrogen evolution porous cathode material and the preparation method thereof, the nickel-based porous materialprepared is rich and uniform in pores, and has the advantages of being large in specific surface area, low in hydrogen evolution over potential, good in catalytic performance, excellent in corrosionresistance, stable in working performance, simple in the preparation process, environment-friendly and the like, the preparation cost of the material is low, the process is simple and easy to realize,and the porous material prepared through the method can be used as the electrolysis hydrogen evolution cathode material.

The invention discloses a cobalt phosphide graded porous nanowire material, preparation thereof and an application thereof in water electrolysis hydrogen production reaction. In the cobalt phosphide hierarchical porous nanowire material, a large number of pores are distributed in the cobalt phosphide nanowire to form a hierarchical porous structure. The preparation method comprises the following steps: firstly, synthesizing basic cobalt carbonate nanowires, then carrying out controllable phosphorization, and simultaneously carrying out phosphorization and pore formation. According to the invention, the hydrogen evolution overpotential of cobalt phosphide can be reduced, and the electrocatalytic activity and stability are improved. The cobalt phosphide hierarchical porous nanowire has important application value as an electrocatalytic material, and the method is simple, efficient and capable of being used on a large scale.

The invention discloses a preparation method of a composite electro-catalytic material for alkaline electro-catalytic hydrogen evolution. The method comprises the following steps: growing a layer of Ni(OH)2 nano sheet structure on carbon fiber paper; coating the surface of the Ni(OH)2 nano sheet structure with a titanium oxide layer by vacuum plating; performing annealing crystallization in a muffle furnace at a temperature of 360 DEG C in an air atmosphere to obtain a TiO2-Ni(OH)2@CFP composite structure material; and performing annealing crystallization on the TiO2-Ni(OH)2@CFP in an air atmosphere by controlling different coating times to obtain the composite electro-catalytic material after coating for different times. The method uses CFP as a base material of a catalyst, a surface areaof a composite electrode is increased, mass transfer is facilitated and the electrochemical activity of the electrode is improved. At the same time, Ni(OH)2 is grown on the base material by hydrothermal, the cost is reduced, combination of Ni(OH)2 and the base material is relatively firm, and distribution is uniform to improve stability of the catalyst. The introduction of TiO2 plays a great rolein improving catalytic performance of the catalyst and reducing hydrogen evolution overpotential, and significant improvement of the electro-catalytic hydrogen evolution activity is realized.

The invention provides a Ni-Mo alloy catalytic hydrogen evolution coating preparation method. A plating solution comprises the following components: 0.15-0.45 mol / L of nickel chloride, 0.1-0.25 mol / L of nickel sulfate, 0.1-0.2 mol / L of sodium sulfate, 0.1-0.3 mol / L of sodium hydrogen phosphate, 0.5-2 mol / L of citric acid, 1-5 g / L of OP-10, 0.1-0.2 g / L of 1,4 butynediol, and 0.1-0.4 mol / L of sodium molybdate; and an electrodeposition technology is characterized in that current density is 3-15 A.dm<-2>, and the plating solution temperature is 20-40 DEG C. The Ni-Mo alloy catalytic hydrogen evolution coating has the characteristics of simple electrode preparation, low cost, uniform coating, and high stability, can effectively reduce the hydrogen overpotential, and has good electrocatalytic activity.

The invention discloses a nickel and molybdenum alloy electrode material which comprises 30-80% of Ni and 10-60% of Mo and further comprises 0.1-10% of Fe, Cr, W, Co, Mn and V. The preparation method of the electrode material comprises the following steps: drying a raw material after washing the same; placing dried Ni and Mo in a vacuum induction melting furnace to perform smelting at 10-30 kW; introducing argon into the vacuum induction melting furnace which smelts Ni and Mo; vacuumizing the vacuum induction melting furnace which smelts Ni and Mo; adding dried Fe, Cr, W, Co, Mn and V into the vacuumized vacuum induction melting furnace and heating the vacuum induction melting furnace in sequence at 10-30 kW and 30-60 kW; refining the melted material; and taking out the vacuum cooled material to obtain the nickel and molybdenum alloy electrode material. The preparation method is easy to operate, safe and reliable, short in production period and low in cost.

The invention discloses a preparation method and application of a multifunctional double-layer nanowire layered composite material, belongs to the technical field of chemical materials, and aims to provide a preparation method and application of the multifunctional double-layer nanowire layered composite material with low overpotential, high surface capacitance, good rate capability and good stability. The preparation method comprises putting foam nickel loaded with redox graphene into a mixed solution of cobalt nitrate and urea, carrying out heat preservation at 120 DEG C for 10 hours to react to form a CoO nanowire precursor, putting the precursor into a mixed solution containing cobalt nitrate, nickel nitrate, urea and ammonium fluoride, putting the mixed solution into a box-type furnace at 120-160 DEG C, keeping the temperature for 6 hours, taking out a sample to obtain a double-layer nanowire precursor, and carrying out annealing at 300-500 DEG C to obtain the multifunctional double-layer nanowire layered composite material. The material is rich and easily available in raw material reserves, low in price, excellent in performance, small in overpotential, large in surface capacitance, high in rate capability and relatively good in cycling stability.

The invention discloses a hydrogenated active cathode and a preparation method of the hydrogenated active cathode and an electrolytic tank with the hydrogenated active cathode. The hydrogenated activecathode comprises a conductive substrate and an active catalyst layer on the conductive substrate, and the active catalyst layer is directly formed on the surface of conductive substrate after heat treatment of nitric acid series nitrate. By means of the preparation method of the hydrogenated active cathode, the defect that the chlorine gas decomposed out in the process of heat treatment when utilizing a chloride solution as a coating solution has great harm to human body is overcome. The prepared catalyst layer of the hydrogenated active cathode is obtained by heat treatment of the nitric acid series nitrate solution with less corrosivity to a nickel base material in an oxygen atmosphere and the heat treatment of low-high-temperature two-stage burning is preferred, the preparation methodof the hydrogenated active cathode is simple, the prepared cathode is strong in corrosion resistance and is long in service life, low in electrode potential, excellent in catalytic activity and highin uniformity of the catalyst layer, and the electrolytic properties and electrocatalytic activity are both improved greatly.

The invention provides a Ni-S-W-C hydrogen evolution electrode comprising a nickel base body and a Ni-S-W-C coating layer deposited on the surface of the nickel base body. The Ni-S-W-C coating layer comprises, by weight, 50%-80% of Ni, 5%-20% of S, 0.1%-1.5% of W and the balance C. The W and C elements are added to a Ni-S coating layer to form the Ni-S-W-C coating layer. The Ni-S-W-C coating layer has low hydrogen evolution over potentiality, high hydrogen evolution catalytic activity and excellent stability and can be widely used as an alkaline water electrolysis hydrogen evolution electrode material. According to the embodiment, the Ni-S-W-C hydrogen evolution electrode provided by the invention has the hydrogen evolution over potentiality being 270mV, the apparent current density being 5.27x10<2> mA / cm<2>, and has higher hydrogen evolution catalytic activity.

The invention discloses a preparation method of a molybdenum selenide-acetylene black composite material and an application of the molybdenum selenide-acetylene black composite material as a catalyst in a hydrogen evolution reaction. The preparation method comprises the steps that firstly, selenium powder and sodium molybdate are dissolved in distilled water and stirred and dissolved sufficiently, and a solution (1) is formed; hydrazine hydrate is added dropwise to the solution (1) and stirred and mixed uniformly, and a solution (2) is obtained; acetylene black is subjected to acidizing treatment and then ultrasonically dispersed in distilled water, and a homogenous solution (3) is obtained; the solution (3) is added dropwise to the solution (2) and mixed uniformly, and a mixed solution (4) is obtained; pH of the mixed solution (4) is regulated to 12.0-12.5, and a solution (5) is obtained; treated nickel foam sheets are soaked in the solution (5) and then transferred to a reaction kettle for the reaction; the temperature is reduced to room temperature after the reaction, a product is subjected to centrifugation, washing, drying and stripping, and the molybdenum selenide-acetylene black composite material is obtained. When the prepared molybdenum selenide-acetylene black composite material is taken as the catalyst in the hydrogen evolution reaction, the hydrogen evolution overpotential is low, and the Tafel slope is small.

The invention belongs to the field of electrochemical materials and discloses a porous amino-functionalized graphene catalytic material and preparation and an application. The preparation comprises the following steps: adding graphene oxide and an ammonia source into a solvent, stirring the two to be uniformly dissolved and carrying out hydro-thermal treatment, carrying out centrifugal washing andfreezing and drying on the product to obtain the amino-functionalized graphene; dispersing the amino-functionalized graphene in a strong base solution, heating and stirring the mixture for an erosionreaction, then transferring the mixture to a ball mill tank to be ball-milled and perforated, neutralizing the reaction liquid with acid, and separating, washing, freezing and drying the solid product to obtain the porous amino-functionalized graphene catalytic material. The preparation method provided by the invention is simple and is only carried out at 80 DEG C in an alkaline condition. The obtained catalytic material has very good electrochemical hydrogen evolution catalytic performance and relatively good stable performance and can promote development of scaled hydroelectrolytic catalytic materials.

The invention discloses a preparation method of a high-performance nickel-cobalt phosphide hydrogen evolution catalyst and an efficient water electrolysis hydrogen evolution research, and belongs to the technical field of water electrolysis hydrogen production and new energy. The preparation method is characterized by comprising the steps of: phosphorizing foam metal substrates such as foam cobalt and foam nickel through a chemical vapor deposition method to prepare a non-noble metal phosphide Co2P / Ni2P porous conductive skeleton; and soaking the conductive skeleton in a solution of cobalt, nickel and other metal salts, and drying and phosphorizing the conductive skeleton again to obtain the non-noble metal phosphide hydrogen evolution catalyst with a nano-porous structure which shows excellent catalytic hydrogen evolution activity and stability in neutral and alkaline environments. The unique structural design greatly exposes the active sites of the metal phosphide, reduces the contact resistance among the components of the material, contributes to hydrogen adsorption and release and accelerates charge transfer among different component interfaces, thereby greatly reducing the overpotential of hydrogen reaction and assisting the development of the hydrogen energy industry and hydrogen fuel cells in China.

The invention relates to a hydrogen evolution electrode with copper and cobalt loaded on three-dimensional foamed nickel, which can be used for an electro-catalysis hydrogen evolution reaction in alkaline solution and is capable of simultaneously loading base metals and a preparation method thereof, and belongs to the technical fields of material science and hydrogen production by electro-catalysis. The technical problem to be solved is to provide the composite hydrogen evolution electrode with copper and cobalt loaded on three-dimensional foamed nickel and a preparation method thereof. A method of plating a composite coating on an electro-mechanical surface is adopted, and copper and cobalt are electro-plated on the three-dimensional foamed nickel in sequence, so that the composite hydrogen evolution electrode is prepared. The prepared electrode has high catalytic activity, is non-toxic, and can keep stable structure and chemical activity under an alkaline condition. In addition, the preparation process of the composite hydrogen evolution electrode is simple, and is suitable for large-scale production.

The invention discloses a nickel-molybdenum-copper ternary metal phosphide as well as a preparation method and application thereof, and is applied to the technical field of water electrolysis hydrogen production. Metal Ni is adopted as a basis, Cu element and Mo element with good hydrogen evolution performance are selected to prepare the ternary composite metal material, and then the catalytic performance of the ternary composite metal material is further improved through phosphorization. Foamed nickel is used as a substrate, and the catalyst grows on the foamed nickel substrate in situ through a hydrothermal method, so that the catalyst has excellent conductivity. The prepared catalyst has excellent hydrogen evolution catalytic activity and stability. The raw materials are rich in reserves and low in price. Meanwhile, the synthetic method used in the invention is simple to operate and easy to control, and can realize large-scale production.

The intention relates to a Co@ FePx-NCs material for alkaline solution hydrogen evolution and a preparation method and application thereof. The method comprises the steps that firstly, ferric chloride, sodium hypophosphite, dicyandiamide and ethyl alcohol are mixed and prepared into a solution, then a cobalt source is added into the solution and mixed evenly, and a mixed solution is obtained; by heating and evaporating the mixed solution to dryness, a CoPx / FePx-C2N4H4 mixture is obtained, finally by soaking the CoPx / FePx-C2N4H4 mixture in a phosphoric acid solution for etching, and sequentially filtering, drying and calcining, the Co@ FePx-NCs hydrogen evolution material is obtained. The Co@ FePx-NCs material can be used for electrocatalytic hydrogen evolution reaction. Compared with the prior art, the preparation method is simple, the raw material cost is low, the earth reserve of main elements is sufficient, the electrochemical performance of the electrode material is improved through the composite effect of two transition metals, and the Co@ FePx-NCs material has a wide industrial application prospect.

The invention discloses a manufacturing method of an Ni-Cr-Al-Cu porous material. The manufacturing method comprises the steps that a powder reaction synthesis method is adopted, and high-purity Ni powder, high-purity Cr powder, high-purity Al powder and high-purity Cu powder are prepared in a certain ratio, wherein the total content of the Cr powder, the Al powder and the Cu powder is 22wt%-45wt%of the total content; after the prepared powder is uniformly mixed and dried, stearic acid is added, and drying is conducted again; pressure forming is conducted, so that a green blank is obtained; and vacuum sintering is conducted on the green blank by the use of the solid phase partial diffusion principle, so that the Ni-Cr-Al-Cu porous material is manufactured. The porous material manufacturedaccording to the manufacturing method has the low hydrogen evolution overpotential, the large specific surface area, excellent corrosion resistance, good catalytic performance and stable working performance, and a manufacturing technology of the porous material is simple and environmentally friendly, has the potential application value in the fields of hydrogen electrolysis evolution and industrial filtering, and has an important significance.

The invention discloses a carbon quantum dot-doped foamed nickel-molybdenum alloy and a preparation method thereof. The method comprises the following steps: (1) preparing a part of electroplate liquid for electrodeposition of the foamed nickel-molybdenum alloy according to a known formula; (2) preparing a glucose carbon quantum dot solution by adopting a glucose hydrothermal method; (3) freezing and drying glucose carbon quantum dots into a carbon quantum dot solid, grinding the carbon quantum dot solid into carbon quantum dot powder, and adding the carbon quantum dot powder into the solution obtained in the step (1) to obtain an electro-deposition solution; (4) using nickel and molybdenum as anodes, foamed nickel as a cathode, placing the anodes and the cathodes in the electro-deposition solution, and performing electro-deposition in a single-cathode and double-anode mode; and (5) heating the solution to 35-55 DEG C, and carrying out electro-deposition under the condition that the apparent cathode current density is 110-130 mA / cm<2>. The foamed nickel-molybdenum alloy doped with the carbon quantum dots prepared by the method has the beneficial effects of good plating quality, good hydrogen evolution effect, high stability and high molybdenum content.