711 results about "Anode catalyst" patented technology

The invention discloses a preparation method and application of an amorphous nickel-cobalt-iron phosphate anode catalyst, and belongs to the technical field of alkaline water electrolysis hydrogen production, the preparation method comprises the following steps: (1) dissolving transition metal salt in a solvent, and stirring to obtain a metal salt solution; (2) dissolving phosphate in a solvent, and stirring to obtain a phosphate solution; and (3) adding the phosphate solution into the metal salt solution for reaction, washing with deionized water and ethanol, centrifugally separating, and drying to obtain the amorphous nickel-cobalt-iron phosphate anode catalyst. According to the preparation method and application of the amorphous nickel-cobalt-iron phosphate anode catalyst, process safety improvement and environmental friendliness optimization are achieved through an all-water-phase green synthesis system, the obtained catalyst shows excellent performance in an AEM electrolytic cell, the cell voltage is only 1.87 V under the current density of 2 A / cm, and the method has remarkable industrial application prospects.

Provided is a laminate capable of electrolyzing an oxygen compound gas represented by CO2 with high conversion efficiency and suppressing deterioration in electrolytic performance. In this laminate having a structure in which an electrolyte layer is sandwiched between an anode catalyst layer and a cathode catalyst layer, a perovskite oxide and CuFe2O4 are contained in the cathode catalyst layer, and the content of CuFe2O4 in the cathode catalyst layer is at least 10 mass%.

The invention provides a preparation method of an acid-resistant and chlorine-corrosion-resistant porous composite electrode and a device constructed on the basis of the electrode and used for preparing hydrogen and chlorine by electrolyzing a sodium chloride solution, two cavities are provided, an acid or neutral saturated sodium chloride solution is filled in the cavities, the cavities are separated by a proton exchange membrane or a diaphragm, and the proton exchange membrane or the diaphragm is filled in the cavities. And in the electrolysis process, the cathode generates high-purity hydrogen, the anode generates high-purity chlorine, the chlorine is absorbed by sodium hydroxide in the gas collection bottle and generates sodium hypochlorite, or the chlorine is introduced into a sodium bromide / sodium iodide solution to replace bromine / iodine elementary substances, and the chlorine is discharged from the gas collection bottle. The sodium hypochlorite solution and the bromine / iodine water are used for disinfection and sterilization experiments. The corrosion-resistant porous composite electrode for electrolysis of an acidic or neutral saturated sodium chloride solution is prepared, the electrolysis voltage of the corrosion-resistant porous composite electrode is further reduced by loading a cathode / anode catalyst, and an acidic or neutral saturated sodium chloride solution electrolysis device constructed based on the electrode can be used for preparing high-purity hydrogen and chlorine.

The invention relates to an iridium dioxide catalyst and a preparation method and application thereof, the iridium dioxide catalyst is a material with a three-dimensional porous structure, and the three-dimensional porous structure comprises mesopores and macropores; the characteristic peak of rutile type iridium dioxide exists in the XRD spectrogram of the iridium dioxide catalyst. When the catalyst disclosed by the invention is used as an anode catalyst in water electrolysis hydrogen production, the loading capacity of the catalyst can be effectively reduced, the dispersity is improved, and meanwhile, the catalyst has better mass transfer effect and conductivity, higher catalytic activity and excellent stability.

The invention relates to an anion exchange membrane based on isopropyl piperidone and biphenyl and a preparation method of a membrane electrode, the preparation method comprises the following steps: respectively dissolving an aromatic monomer and IPD in a first solvent, and mixing to obtain a mixed solution, the aromatic monomer being BP or TP; dropwise adding an acidic initiator into the mixed solution for reaction at the reaction temperature of-5 DEG C to 0 DEG C to obtain a nitrogen heterocyclic ring polymer intermediate; adding a quaternization reagent into the nitrogen-containing heterocyclic ring polymer intermediate to realize quaternization modification of nitrogen atoms to obtain a quaternization ionomer; and forming a film to obtain the AEM film. The preparation method of the membrane electrode comprises the following steps: respectively forming a cathode catalyst layer and an anode catalyst layer on two opposite sides of an AEM membrane through ultrasonic spraying to obtain the MEA. The AEM membrane and the MEA obtained according to the invention have the characteristics of excellent stability and high water electrolysis performance, can significantly improve the efficiency and durability of AEMWE, and are suitable for the fields of hydrogen production by water electrolysis and the like.

The invention provides a stable multivalent metal surface doped ruthenium oxide catalyst, a preparation method thereof and application of the stable multivalent metal surface doped ruthenium oxide catalyst in a proton exchange membrane water electrolysis device, and belongs to the technical field of catalysts and preparation thereof. According to the prepared multivalent metal such as molybdenum, niobium, tungsten, tantalum and chromium doped ruthenium oxide catalyst, the active center electronic structure is effectively stabilized due to the flexible valence change of the multivalent metal in the oxygen evolution process, meanwhile, a surface layer can be constructed through surface doping, separation of the active center Ru and lattice oxygen is effectively inhibited, and the stability of the catalyst is improved. The prepared catalyst shows excellent catalytic activity and electrochemical stability in an acidic oxygen evolution reaction, has the advantages of low cost and good catalytic stability, and in addition, can stably operate under relatively high current density as a proton exchange membrane electrolyzed water anode catalyst.

The invention provides a supported IrOx catalyst as well as a preparation method and application thereof. The supported IrOx catalyst comprises an oxide carrier and an active component supported on the carrier, the active component comprises an Ir elementary substance and amorphous IrOx coated on the surface of the Ir elementary substance; and the crystal structure of the IrOx is long-range disordered and short-range ordered. The preparation method of the supported IrOx catalyst is convenient to implement, high in reproducibility and beneficial to industrial preparation and production, gram-level batch preparation can be achieved under the laboratory condition, and possibility is provided for large-scale preparation of the low-cost, high-activity and high-stability proton exchange membrane water electrolysis hydrogen production anode catalyst.

The invention relates to a titanium oxide nanowire supported iridium catalyst as well as a preparation method and application thereof. The catalyst comprises a titanium oxide nanowire carrier and elemental iridium supported on the titanium oxide nanowire carrier. According to the catalyst, the titanium oxide nanowire is used as a carrier, and the catalyst prepared by loading elemental iridium on the titanium oxide nanowire is used as an anode catalyst, so that higher mass specific activity and lower oxygen evolution overpotential can be obtained; the membrane electrode prepared by using the composite material has the characteristics of low noble metal catalyst loading capacity and low electrolytic water decomposition voltage.

The present invention provides a catalyst-layer-equipped electrolyte membrane and an application of the same, said catalyst-layer-equipped electrolyte membrane comprising: an anode catalyst layer containing an ionomer and an anode catalyst component that is composed of iridium-containing manganese dioxide, the molar ratio of iridium to manganese in the anode catalyst component being 0.011-0.182, and the logarithm log(amount of ionomer / amount of anode catalyst component) of the ratio of the amount of the ionomer to the amount of the anode catalyst component being −1.40 to −0.46; a proton exchange membrane; and a cathode catalyst layer.

The invention relates to a membrane electrode with high oxygen permeability and a preparation method thereof, the membrane electrode comprises a proton exchange membrane, an anode catalyst layer and a cathode catalyst layer, the anode catalyst layer and the cathode catalyst layer are arranged on two sides of the proton exchange membrane, and anode catalyst slurry comprises an anode catalyst, an ionomer and a dispersing solvent in a mass ratio of 1: (1-10): (10-1000); the cathode catalyst slurry comprises a cathode catalyst, an ionomer, an ionic liquid and a dispersing solvent in a mass ratio of 1: (1-10): (1-10): (10-1000). Compared with the prior art, in order to solve the problem that oxygen mass transfer of a porous carbon carrier in a fuel cell catalyst layer is difficult, the method that ionic liquid and ionomer are mixed in advance, then slurry is prepared, and the slurry is sprayed to prepare the membrane electrode is adopted, so that a compact structure formed by an ionomer membrane on the surface of a catalyst is weakened, and the distribution uniformity of the ionomer membrane is improved; the local oxygen mass transfer resistance is obviously reduced, and the performance of the fuel cell under high current density is improved.

The invention provides a self-humidifying CO2 membrane electrode structure and a preparation method thereof. The self-humidifying CO2 membrane electrode structure comprises an electrolyte isolation plate, the electrolyte isolation plate is provided with an anode side and a cathode side, the anode side is sequentially provided with a cation exchange membrane, an anode catalyst layer, a current collector and an anode electrode plate, and the cathode side is sequentially provided with an anion exchange membrane, a cathode catalyst layer and a cathode electrode plate; the anode electrode plate is provided with a first inlet, hydrogen enters the anode electrode plate from the first inlet and is subjected to a hydrogen oxidation reaction under the action of an anode catalyst to generate protons and electrons, and the protons are migrated to the electrolyte isolation plate through the cation exchange membrane; the cathode electrode plate is provided with a second inlet, CO2 gas enters the cathode electrode plate from the second inlet and is subjected to a reduction reaction under the action of a cathode catalyst to generate a reduction product and OH <->, and OH <-> is migrated to the electrolyte isolation plate through the anion exchange membrane to react with protons. The long-term operation stability of the membrane electrode structure is remarkably improved.

A membrane-electrode assembly for a water electrolyser is provided. The membrane- electrode assembly comprises a polymer electrolyte membrane with a first face and a second face; an anode catalyst layer on the first face of the membrane, the anode catalyst layer comprising an oxygen evolution reaction catalyst; and a porous web of polymer fibres in contact with the anode catalyst layer, the polymer fibres comprising a conductive metal additive.

The invention relates to the technical field of new energy materials, and discloses a gradient porous three-dimensional interpenetrating network direct ammonia fuel cell membrane electrode. The gradient porous three-dimensional interpenetrating network direct ammonia fuel cell membrane electrode comprises an exchange membrane, an anode catalyst layer, a cathode catalyst layer and a gas diffusion layer, wherein the anode catalyst layer and the cathode catalyst layer have gradient pore size distribution from the exchange membrane side to the gas diffusion layer side; wherein the interiors of the anode catalyst layer and the cathode catalyst layer are provided with three-dimensional interpenetrating network structures. According to the invention, the utilization rate of the catalyst is improved by 30-50%, the mass transfer resistance is reduced by 40-60%, the interface contact is improved, the controllability of the preparation process is improved, the structural stability is enhanced, the power density of the direct ammonia fuel cell reaches 250-300mW / cm < 2 >, the performance retention rate after 5000 cycles can reach 85% or more, and the method has remarkable technical advantages and application prospects.

The invention discloses a membrane electrode, a preparation method thereof and a fuel cell, the membrane electrode comprises a catalyst layer and a proton exchange membrane, the catalyst layer comprises an anode catalyst layer and a cathode catalyst layer, and the anode catalyst layer and the cathode catalyst layer are respectively arranged on two sides of the proton exchange membrane; the catalyst layer and the proton exchange membrane are both doped with phosphoric acid. By macroscopically regulating and controlling the PA content of the catalyst layer and the proton exchange membrane in the membrane electrode, more three-phase reaction interfaces are constructed, so that the Pt catalyst can be fully utilized, and unnecessary migration of PA is reduced, thereby avoiding the phenomenon of acid flooding, ensuring sufficient PA in the proton exchange membrane to provide sufficient proton conductivity, and improving the proton exchange efficiency. And the power density of the fuel cell is further improved.

The invention relates to an AEM electrolytic bath. The current density and the heat exchange capacity of the electrolytic bath are improved. Liquid on the anode side of each single section of the electrolytic cell can uniformly and quickly flow on the surface of the anion exchange membrane, oxygen generated on the anode side can be quickly and effectively discharged out of the electrolytic cell, and hydrogen generated on the cathode side and water permeated from the anion exchange membrane can be timely and efficiently discharged out of the electrolytic cell; certain pressure is provided for the cathode catalyst layer and the anode catalyst layer, so that the catalyst layers are uniformly stressed and attached to the two sides of the anion exchange membrane. In a comparison test of electrolysis with an active area of 300cm < 2 >, under the same conditions of 2V voltage and temperature of 60 DEG C, the current value of the electrolytic bath of a cutting machining flow field on a metal pole plate is 218A, the current value of the electrolytic bath of a spongy foam metal flow field with a groove-shaped flow channel is 289A, and the efficiency is improved by 32.56%. And under other working conditions, the test current is also improved by 20%-32%.

The invention discloses a ruthenium-doped nanoneedle sheet carbon-loaded cobaltosic oxide self-supporting electrode as well as a preparation method and application thereof. The preparation method comprises the following steps: preparing a ruthenium-cobalt precursor from a mixed solution of cobalt nitrate hexahydrate, ammonium fluoride, ruthenium trichloride and urea through a hydrothermal method, drying, and calcining in air to obtain the RCO catalyst grown on the carbon cloth. The catalyst has a nanoneedle sheet type structure, can provide a high-quality reactant transmission channel, shows excellent oxygen evolution reaction electrocatalytic activity and stability in alkali / acidic electrolyte, can be used as an efficient anode catalyst for acid and alkaline solution water electrolysis devices, and has a good market prospect.

A proton exchange membrane electrolytic cell membrane electrode structure with non-uniform load distribution under an anode catalyst layer rib and a flow channel area is characterized in that different load catalysts are sprayed on the area under the anode catalyst layer rib and the flow channel area of a membrane electrode in different areas, so that the whole catalyst layer is in non-uniform load distribution to improve the reaction performance of the membrane electrode; and gradient distribution of the catalyst is formed to improve membrane electrode performance. The thought of non-uniform load distribution of the under-rib area and the runner area of the membrane electrode catalyst layer designed by the invention not only can be used for preparing the membrane electrode of a proton exchange membrane electrolytic tank, but also can be used in the fields of the catalyst layer of a proton exchange membrane fuel cell and the like in which metal nanoparticles are deposited on the two sides of the membrane to improve the reaction performance and the like.

The invention discloses a method for preparing a methanol fuel cell anode catalyst by doping a modified multi-walled carbon nanotube carrier. The method comprises the following steps: 1) acidizing an unmodified multi-walled carbon nanotube; (2) preparing the cerium oxide doped modified multi-walled carbon nanotube; and 3) preparing the cerium oxide doped modified multi-walled carbon nanotube carrier loaded PtFe bimetallic alloy catalyst. According to the method disclosed by the invention, the MWCNTs are induced by doping CeO2 to generate more oxygen vacancy defects, so that anchoring of more active sites of the PtFe alloy is facilitated, and MOR is promoted to improve the activity of the catalyst; the stable Ce < 4 + > can deform the surface structure of Pt, so that the binding bond energy of COads and-OH is stronger, and an anti-poisoning effect is achieved; the introduced Fe element and Pt have metal electronegativity difference, so that the adsorption bond energy of formic acid, formaldehyde and carbon monoxide intermediates generated by gradual dehydrogenation of Pt and methanol can be weakened, and the anti-toxicity effect is achieved; and the PtFe alloy and the CeO2 / MWCNTs are in synergistic interaction, so that the stability of the catalyst can be enhanced.

The invention provides a cobalt-based catalyst, a preparation method thereof and application of the cobalt-based catalyst in electrolytic hydrogen production. Specifically, the cobalt-based catalyst mainly comprises a nano cobalt oxide and a nano cobalt hydroxide, and is prepared by taking KCo (III) EDTA as a precursor through an electrochemical deposition method. The preparation method of the cobalt-based catalyst comprises the following steps: firstly, dissolving KCo (III) EDTA (Ethylene Diamine Tetraacetic Acid) in an alkaline solution to form cobalt-containing alkaline liquor; performing electrochemical deposition, and performing in-situ deposition on the surface of the electrode to form a cobalt-based catalyst; the preparation method is simple, convenient, easy to control, good in reproducibility, capable of forming high binding force with an electrode without fixing of an additional binder, good in stability, not prone to falling off and beneficial to industrial application as a catalyst for hydrogen production through water electrolysis. The cobalt-based catalyst is applied to a water electrolysis hydrogen production catalyst, and the cobalt-based catalyst has an obvious oxygen evolution reaction as an anode catalyst.

The invention relates to a membrane electrode and application thereof in deuterium-enriched water, and belongs to the field of clean energy development and utilization. The membrane electrode comprises a proton exchange membrane, an anode catalyst and a cathode catalyst, the anode catalyst is an iridium / iridium oxide catalyst with a three-dimensional porous network structure, and the cathode catalyst is a platinum-ruthenium alloy catalyst. The preparation method comprises the following steps: coating one side of the N117 proton exchange membrane with the anode catalyst, coating the other side of the N117 proton exchange membrane with the cathode catalyst, and then performing hot pressing to prepare the membrane electrode. The method comprises the following steps: assembling a membrane electrode into an electrolytic cell, and electrolyzing water by using the electrolytic cell to realize deuterium enrichment. The membrane electrode and the electrolytic cell are reasonable in design, the preparation process is simple and controllable, and the obtained product is high in efficiency and long in service life when used for enriching deuterium and facilitates industrial application.

The invention provides a method and a system for establishing an alkaline fuel cell model considering gas and liquid phases. The method comprises the following steps: dividing an alkaline fuel cell into nine computational domains, namely a cathode / anode plate, a cathode / anode runner, a cathode / anode diffusion layer, a cathode / anode catalyst layer and a diaphragm; respectively establishing an electrochemical model for each computational domain of the alkaline fuel cell, wherein the electrochemical model comprises an electron potential conservation equation and an ion potential conservation equation; establishing a flow field model which comprises a gas phase mass conservation equation, a gas phase momentum conservation equation, a gas phase component conservation equation and a liquid water conservation equation; establishing a temperature field model including an energy conservation equation; setting the operation boundary conditions of the alkaline fuel cell, wherein the operation boundary conditions comprise anode and cathode inlet gas mole fractions, mass flow, temperature and output voltage. According to the three-dimensional multi-physical field model establishing method of the alkaline fuel cell considering the gas phase and the liquid phase, provided by the invention, based on the working principle of the alkaline fuel cell, a modeling method can be provided for characteristic research of the alkaline fuel cell.

The invention relates to a membrane electrode of a gradient catalyst layer on a cathode side and a preparation method of the membrane electrode. The method comprises the following steps: providing a proton exchange membrane and an anode catalyst layer; providing first catalyst layer slurry, and coating the surface of the proton exchange membrane with the catalyst layer slurry to obtain a first catalyst layer; second catalyst layer slurry is provided, the second catalyst layer slurry is spun onto the first catalyst layer through an electrostatic spinning technology, a second catalyst layer is obtained after drying, and the first catalyst layer and the second catalyst layer form a double-layer gradient cathode catalyst layer; and carrying out hot-pressing transfer printing on the double-layer gradient cathode catalyst layer and the anode catalyst layer so as to combine the double-layer gradient cathode catalyst layer and the anode catalyst layer on the proton exchange membrane to obtain the membrane electrode. The catalyst layer obtained through the electrostatic spinning process and spinning is higher in porosity and better in pore structure uniformity, so that the cathode gradient catalyst layer with pores in an increasing trend is formed, water-gas mass transfer of a fuel cell in a high-current density area is facilitated, and the cell performance is improved.

The invention provides a membrane electrode and a proton exchange membrane fuel cell, and particularly relates to the technical field of fuel cells. The membrane electrode comprises an anode gas diffusion layer, an anode catalyst layer, a proton exchange membrane, a cathode catalyst layer and a cathode gas diffusion layer which are sequentially stacked, and the anode gas diffusion layer comprises a hydrophilic microporous layer. According to the membrane electrode provided by the invention, the hydrophilic microporous layer is arranged in the anode gas diffusion layer, and water vapor generated by the anode catalyst layer is absorbed and transferred by the hydrophilic microporous layer at the first time and then is transferred and discharged by the hydrophobic microporous layer, so that water and gas on the anode side are uniformly distributed, water logging is avoided, and the gas mass transfer process on the anode side is improved; and normal operation of the membrane electrode is further ensured.

The invention relates to a noble metal catalyst derived from a metal organic framework, in particular to a ZIF-8-derived ruthenium elementary substance-ruthenium oxide-loaded catalyst as well as a preparation method and application thereof, and belongs to the technical field of advanced nonferrous metal materials, in particular to the field of noble metal nano catalytic materials. According to the invention, the zinc-based metal organic framework compound ZIF-8 is used as a precursor, the ruthenium-loaded elemental ruthenium-ruthenium oxide catalyst is controllably synthesized, and the catalytic activity and stability of the ruthenium oxide catalyst are effectively improved, so that the ruthenium oxide catalyst can be used as a high-activity and good-stability PEM electrolyzed water cathode / anode catalyst.

Provided is an electrolyte membrane with a catalyst layer, which is capable of suppressing a reduction in the output of a fuel cell while reducing the production cost. The present invention is a catalyst layer-equipped electrolyte membrane having a cathode catalyst layer on one surface of the electrolyte membrane and an anode catalyst layer on the other surface, the cathode catalyst layer and the anode catalyst layer each containing platinum, the electrolyte membrane has a transmittance ratio TR50 (TH50 / TO50) of hydrogen gas transmittance (TH50) to oxygen gas transmittance (TO50) at 65 DEG C and 50% RH of 3.0 or more, and satisfies the following condition 1 and / or condition 2. < Condition 1 > The ratio (CPt / APt) of the amount of platinum (CPt) per unit area of the cathode catalyst layer to the amount of platinum (APt) per unit area of the anode catalyst layer is 2.0 or more. < Condition 2 > The ratio TAn / TCa of the thickness (TCa) of the cathode catalyst layer to the thickness (TAn) of the anode catalyst layer is less than 0.40.

The invention discloses a method for preparing a membrane electrode through one-step two-section hot-pressing transfer printing. Comprising the following steps: S1, coating a first transfer printing substrate with cathode catalyst slurry to form a cathode catalyst layer, and coating a second transfer printing substrate with anode catalyst slurry to form an anode catalyst layer; s2, the first tiled layer, the second transfer printing base material with the anode catalyst layer, the proton exchange membrane, the first transfer printing base material with the cathode catalyst layer and the second tiled layer are sequentially stacked and tiled on a hot press, first hot pressing treatment and second hot pressing treatment are sequentially executed, and the cathode catalyst layer and the anode catalyst layer are arranged close to the proton exchange membrane; wherein the treatment pressure of the first hot-pressing treatment is smaller than that of the second hot-pressing treatment, and the treatment time of the first hot-pressing treatment is larger than or equal to that of the second hot-pressing treatment. According to the method, the initial pore structure of the catalyst layer can be reserved to the greatest extent while the transfer printing rate of the catalyst layer is improved, and the peak power density of the membrane electrode is improved.

The invention relates to an anode catalyst capable of being updated in situ in an electrolytic bath as well as a preparation method and application of the anode catalyst. The anode catalyst capable of being updated in situ in the electrolytic bath comprises a nickel-based self-supporting carrier and a NiFe-LDH nanosheet array S-NiFe-LDH which is loaded on the nickel-based self-supporting carrier and formed by alternately combining S element doped nickel hydroxide and ferric hydroxide.

The invention discloses a modified ruthenium-based acidic oxygen evolution catalyst as well as a preparation method and application thereof, and belongs to the technical field of nano materials and catalysis. The preparation method comprises the following steps: firstly, mixing a mixed solution of transition metal salt and soluble ruthenium salt with a complex ligand dispersion liquid, then evaporating and curing to obtain a metal chelate precursor, and finally performing pyrolysis oxidation to obtain the metal chelate. The transition metal salt comprises at least one of soluble Nb, Ti, Cr, Mn, Co, Cd, Sn and Sb metal salts. The preparation process is simple and easy to implement, the precursor salt is flexible to select, the synthesis method has high expansibility in preparation of the nano oxide, a preparation way is provided for application of the nano oxide in the fields of energy, environment, sensing and the like, and the prepared modified ruthenium-based acidic oxygen evolution catalyst is small and uniform in particle, clean in surface, free of ligands and suitable for industrial production. The catalyst shows high activity and high stability on oxygen evolution reaction, and a new choice is provided for a commercial anode catalyst for producing hydrogen by electrolyzing water.

The triangular runners are arranged on the inner sides of an anode plate and a cathode plate of the PEM electrolytic bath, the vertex angle is 30-90 degrees (preferably 45-60 degrees), the depth of each runner is 0.5-5 mm, the width of each runner is 0.5-5 mm, the interval of each runner is 1-10 mm, and the triangular runners can be arranged in parallel, staggered and the like. The anode plate and the cathode plate can be made of metal (such as stainless steel and titanium alloy) or graphite materials, and cooling channels can be arranged outside the anode plate and the cathode plate. The membrane electrode assembly comprises a proton exchange membrane (such as a perfluorosulfonic acid membrane), an anode catalyst layer (such as iridium dioxide) and a cathode catalyst layer (such as platinum or platinum alloy). According to the electrolytic cell, fluid disturbance is increased, gas discharge is improved, membrane electrode hydrogen attachment is effectively reduced, proton conduction and electrode reaction activity are improved, and compared with a traditional electrolytic cell, under the same condition, the current density, the hydrogen production efficiency and the hydrogen purity are higher, energy consumption and cost are lower, and good application prospects and economic benefits are achieved.

The invention discloses a conductive layer coated ruthenium-doped beta-manganese dioxide catalyst and a preparation method and application thereof.The preparation method comprises the following steps that a manganese source, ruthenium trichloride trihydrate, an oxidizing agent and water are mixed, an obtained precursor solution is subjected to microwave synthesis, and the conductive layer coated ruthenium-doped beta-manganese dioxide catalyst is obtained. The obtained ruthenium-doped beta-manganese dioxide composite material, hydrochloric acid A and aniline are added into water, then hydrochloric acid B and ammonium persulfate are added, the obtained polyaniline-coated ruthenium-doped beta-manganese dioxide composite material is subjected to calcination treatment, and the conductive layer-coated ruthenium-doped beta-manganese dioxide catalyst is obtained. The conductive layer coated ruthenium-doped beta-manganese dioxide catalyst prepared by the invention has excellent catalytic activity and catalytic stability, and solves the problem of insufficient stability caused by high catalytic potential and catalyst dissolution in the test process of the anode catalyst of the proton exchange membrane electrolytic cell.