139 results about "Iridium oxide" patented technology

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 present invention relates to an iridium-based catalyst. The catalyst comprises elemental iridium and optionally present iridium oxide. With respect to the entire catalyst, the content of iridium is 70% or above in terms of mass fraction, and the apparent mass-volume ratio of the catalyst is not higher than 0.55 g / cm3. The catalyst has a large specific surface area, a high porosity and a low apparent mass-volume ratio, and therefore has excellent mass transfer performance and an apparent catalytic activity. A three-dimensional porous structure of the catalyst can improve the utilization rate of iridium, such that the loading of iridium in a membrane electrode is reduced, and the catalyst has excellent stability. The preparation method for the catalyst is simple and convenient, and has a relatively high economy.

The invention relates to the field of photovoltaic technology, in particular to a solar cell and a preparation process thereof, a laminated cell and a photovoltaic module. The preparation process comprises the following steps: providing a silicon substrate, and preparing a passivation layer on the surface of the silicon substrate; printing a conductive material on the passivation layer; sintering and curing the conductive material to form an initial grid line; performing laser processing on the initial grid line; wherein the conductive material comprises metal powder, glass powder, an organic carrier, iridium oxide, lanthanum oxide and titanium dioxide; the metal powder comprises at least one of silver powder, nickel powder, copper powder, silver coated copper, silver coated nickel and aluminum powder. The iridium oxide, the lanthanum oxide and the titanium dioxide are simultaneously added into the conductive material adopted in the preparation process, so that the power attenuation of the module is reduced.

The invention belongs to the technical field of electro-catalysis, and particularly relates to a short-range ordered neodymium element doped iridium oxide catalyst, an iridium oxide-based catalyst and a preparation method and oxygen evolution application thereof. The preparation method comprises the following steps: reacting iridium source metal salt with strong alkali, then carrying out alkali-assisted co-precipitation reaction with neodymium source metal salt to form iridium-neodymium co-coordinated hydrated hydroxide, and then sequentially carrying out drying, heat treatment and acid treatment to obtain the short-range ordered neodymium element doped iridium oxide catalyst. According to the method, the amorphous iridium oxide matrix dominated by side sharing [IrO6] connectivity is directly generated, meanwhile, low-valence Nd < 3 + > cations with large ion radius and obvious oxyphilicity are in a short-range frame of the amorphous iridium oxide matrix so as to synergistically activate an OPM oxide path mechanism, and the OPM oxide path mechanism overcomes the technical defects existing in an existing LOM lattice oxygen mechanism.

The invention provides a method for efficiently recovering metal iridium from waste iridium and waste materials, and belongs to the technical field of precious metal recovery. Comprising the following steps: (1) stripping a titanium substrate by adopting high-pressure water jet or ultrasonic vibration; (2) adding the titanium substrate obtained by stripping into mixed acid, carrying out gradient heating for dissolving, filtering, and reserving filtrate for later use; (3) adding a tributyl phosphate / kerosene system into the filtrate, extracting and separating the tributyl phosphate / kerosene system, and adding diluted hydrochloric acid for back extraction and separation to obtain an iridium extract; and (4) adding a purifying agent into the iridium extraction liquid, carrying out ultrasonic purification, separating the purifying agent, adding solid ammonium chloride into the filtrate, precipitating, filtering, washing the solid with an ammonium chloride solution, drying, and calcining to obtain an iridium oxide product. The method comprises the following steps: preferentially extracting iridium from a medium by adopting tributyl phosphate (the partition ratio is gt; 100), a purifying agent is added into the solution, and impurities such as Fe, Al and Cu ions are deeply removed.

The application discloses a preparation method and application of a zirconium dioxide loaded iridium oxide nanocluster oxygen evolution electrocatalyst. A mixed solution of zirconium salt, amide solvent and organic acid is prepared, and the mixed solution is kept at 120 DEG C for 24 hours; after cooling, the white product is separated, washed and dried. Then, the product and iridium salt are dispersed in a mixed solution of tetrahydrofuran and water, and sodium nitrate and potassium nitrate aqueous solution are added under stirring; after stirring, rotary evaporation is carried out at 60 DEG C, and the greenish powder obtained after drying is vacuum dried at 60 DEG C for 12 hours; the greenish powder is kept in a muffle furnace at 450 DEG C for 30 minutes, and then cooled in air; the greenish powder is washed with deionized water and anhydrous ethanol for multiple times, and finally vacuum dried at 60 DEG C for 12 hours. The zirconium dioxide loaded iridium oxide material based on oxygen overflow stable tetragonal zirconia can be specially applied to an electrocatalyst for an oxygen evolution reaction in an acidic electrolyte, has excellent oxygen evolution reaction activity, follows a lattice oxygen mechanism in the reaction process, and can realize an oxygen overflow effect from tetragonal zirconia to iridium oxide nanoclusters to stabilize the catalyst.

The present invention relates to a water electrolysis electrode, a membrane electrode assembly comprising same, and an electrolysis cell comprising the membrane electrode assembly. Provided are a water electrolysis electrode, a membrane electrode assembly comprising same, and an electrolysis cell, the water electrolysis electrode comprising: a substrate; and a catalyst layer positioned on the substrate and comprising an iridium oxide and an iridium oxide-ionomer aggregate.

The application discloses a preparation method and application of an oxygen-evolving electrocatalyst of iridium oxide anchored by surface titanium oxygen species. The catalyst is obtained by electro-oxidizing a titanium nitride supported metal iridium cluster pre-catalyst. The surface titanium oxygen species is obtained by electrochemical reconstruction of titanium nitride, and the iridium oxide is obtained by electro-oxidizing a metal iridium cluster. When the catalyst is used for an anode oxygen evolution reaction, the catalyst has excellent catalytic activity and significantly improved stability. Compared with existing catalysts, the catalyst provided by the application is obtained by electro-oxidizing a pre-catalyst. In a PEM electrolytic cell, the titanium nitride carrier in the pre-catalyst plays a role of a pore-forming agent in the electro-oxidation dissolution process, and the catalytic layer is spontaneously thickened, thereby solving the problems of poor uniformity and mechanical stability of a super-thin catalytic layer electrode of a PEM water electrolysis cell, and more easily realizing large-scale industrial application under an ultra-low iridium load.

The invention relates to a method for electrochemically hydrogenating isophorone in a divided cell using H2O as a hydrogen source and in the presence of H2SO4 in anolyte and catholyte, wherein a pure-material electrode made of a material selected from graphite, nickel, and steel is used as the cathode and an electrode selected from solid-body and supported electrodes having an active material selected from platinum, graphite, boron-doped diamond, ruthenium oxide, platinum oxide, and / or iridium oxide is used as the anode.

The invention discloses anode slurry as well as a preparation method and application thereof. The invention provides a preparation method of anode slurry C. The preparation method comprises the following steps: step 1, mixing an iridium catalyst, perfluorinated sulfonic acid resin dispersion liquid and a solvent to obtain slurry A; step 2, adding a platinum precursor into the slurry A to obtain slurry B; and step 3, the slurry B reacts at 50-90 DEG C to prepare anode slurry C. According to the method, the water-soluble platinum precursor is directly added into the anodized iridium oxide catalyst slurry, so that the dispersity of platinum and the capability of eliminating hydrogen in oxygen of platinum per unit mass are remarkably improved.

The application provides an iridium and iridium oxide composite catalyst and a preparation method and application thereof. The XRD spectrum of the catalyst has characteristic peaks of elemental iridium and does not have characteristic peaks of iridium dioxide. The preparation method can avoid the use of sodium borohydride reducing agent and surfactant, does not produce solid waste and NOx exhaust gas, and has high atomic utilization rate of iridium metal. When the catalyst is used as an anode catalyst for hydrogen production by water electrolysis of a proton exchange membrane, the catalyst has the characteristics of low overpotential, high activity and good stability.

The present invention relates to an electrode for water electrolysis and a membrane electrode assembly comprising same, wherein the electrode for water electrolysis comprises a catalyst layer comprising a catalyst containing metallic iridium and iridium oxide, wherein the full width at half maximum of the metallic iridium peak and the iridium loading amount of the catalyst layer satisfy specific conditions.

The application relates to an iridium oxide catalyst with a dendritic pore structure, a preparation method and application thereof in proton exchange membrane water electrolysis technology, and belongs to the technical field of water electrolysis. An iridium source is dissolved in water, then a mixed template agent is added, a pore expanding agent is added after dissolution, and a uniform emulsion is obtained after mixing uniformly; an initiator is added to carry out reaction, after the reaction is completed, the mixed solution of water and anhydrous ethanol with a volume ratio of 1:1 is used for centrifugal cleaning for 3-5 times, the template agent is washed away, and the iridium oxide catalyst with the dendritic pore structure is obtained after drying. Compared with commercial iridium oxide catalyst nanoparticles, the prepared iridium oxide catalyst with the dendritic pore structure provides more active sites, meanwhile, the rich pore structure significantly improves the mass transfer capacity of the catalyst, diffusion limitation existing in the poreless material is overcome, therefore, in a low iridium load, the PEM water electrolysis oxygen evolution reaction exhibits higher activity and stability, and high-efficiency oxygen evolution catalytic reaction is realized.

The application discloses a method for recovering and purifying chloroiridic acid from an iridium-containing waste catalyst, which comprises the following steps: firstly, mixing the iridium-containing waste catalyst with a reaction aid and a solid oxide, and then performing a melting reaction under the temperature condition of 250-400 DEG C to obtain an iridium oxide melt which is hardly soluble in water; secondly, adding water to the melt to remove impurities, and then filtering to obtain the iridium oxide; finally, adding acid to the iridium oxide to obtain a chloroiridic acid solution. The method for recovering and purifying chloroiridic acid from the iridium-containing waste catalyst can obtain the iridium oxide which is only soluble in acid but hardly soluble in water after the melting reaction under the temperature condition of 250-400 DEG C, and then the metal impurities and the catalyst carrier in the catalyst can be removed by simple water washing, and the chloroiridic acid can be obtained by acid leaching, so that the method is short in route, low in cost, and suitable for industrial application; in addition, the purity of the chloroiridic acid is high (more than 99.95%), and the recovery rate is also high (more than 98%).

This invention discloses a method for preparing an electrically pulsed perovskite oxygen evolution reaction (OER) catalyst. The method involves overlapping electrodes on both sides of an SRIO thin film prepared from strontium nitrate, ruthenium oxide, and iridium oxide. Under an argon atmosphere, the SRIO thin film is subjected to a 2-second electrical pulse treatment via an external voltage source, with an electric field strength of 40 V / cm. This invention utilizes ruthenium oxide and iridium oxide powders as ruthenium and iridium sources, making it easier to obtain high-purity SRIO@E catalysts. This provides significant guidance for the synthesis of noble metal-based perovskite materials. Through a simple and easy-to-implement electrical pulse treatment strategy, this invention can remove some oxygen atoms from the catalyst, increasing the number of unpaired electrons available for the catalytic reaction and improving reaction activity. Furthermore, this electrical pulse treatment strategy is simple and controllable, has universal applicability, and is expected to meet the needs of industrial production.

A method of recovering iridium in a platinum group metal refining process by dissolving iridium from a solid iridium containing material into an aqueous solvent to produce an iridium containing solution, wherein the solution is acidic and / or is acidified by addition of an acid (e.g. HCl) after dissolution of the iridium; adding an aliphatic polyamine (e.g. diethylenetriamine or ethylenediamine) to the solution to precipitate the iridium as an iridium polyamine salt; and separating the precipitated iridium polyamine salt from the solution. A majority of the iridium is dissolved in its +3 oxidation state and remains in this state throughout the precipitation and separation steps. The sold iridium (e.g. an iridate or an iridium oxide) can be reduced from its +4 oxidation state when it dissolved using an oxalate or oxalic acid reducing agent. The solution comprises substantially no rhodium or ruthenium.

The application discloses an iridium oxide modified fluorine-doped tin oxide electrode and a preparation method and application thereof. The electrode comprises a light-transmitting fluorine-doped tin oxide conductive glass substrate and an in-situ attached iridium oxide nano-modified layer. The preparation method comprises the following steps: preparation and aging of a precursor solution, alternating current electrochemical deposition, annealing and cleaning, and laser patterning treatment. The application further discloses a cell impedance sensor organ chip system comprising the electrode and application of the system in in-vitro drug screening. The application utilizes the low cost and light-transmitting property of the fluorine-doped tin oxide and the excellent charge injection capacity of the alternating current deposited iridium oxide nano layer to greatly reduce the interface impedance. The scheme meets the in-situ optical observation, realizes the high-sensitivity biological impedance monitoring comparable to gold electrodes, effectively solves the problems of high cost and complex process of the existing organ chip electrode, and is very suitable for popularization and application as a disposable high-throughput consumable.

The invention provides an iridium-antimony-tin ternary metal oxygen evolution catalyst and a preparation method thereof. The iridium-antimony-tin ternary metal oxygen evolution catalyst comprises a carrier and iridium oxide loaded on the carrier, and the carrier is antimony oxide doped with tin oxide. In the application, on one hand, oxides of rich metal elements antimony and tin in the earth crust are adopted as carriers, so that the use amount of scarce and expensive iridium is reduced, and the catalytic ability of the sites to the oxygen evolution reaction is further enhanced due to the introduction of iridium; on the other hand, through the synergistic effect of the three metals, more catalytic active sites are provided, the reaction energy barrier is reduced, and the intrinsic activity and reaction kinetics of the catalyst are improved; on the other hand, iridium, antimony and tin in the catalyst generate a synergistic effect, so that formation of a more stable crystal structure and a metal-oxygen bond is facilitated, and the structure of the catalyst is effectively prevented from being damaged. According to the iridium-antimony-tin ternary metal oxygen evolution catalyst, the activity, selectivity and stability of the oxygen evolution reaction are improved, and the overpotential is reduced.

The invention relates to the technical field of electrolytic catalysts, in particular to an iridium oxide nanosheet catalyst and a preparation method and application thereof. The method comprises the following steps: dissolving iridium metal salt in a mixed solvent of deionized water and ethanol in a specific ratio, adjusting the pH value of a system by combining with nitric acid, then introducing acetylacetone to construct a stable complexing system, inducing a gelation process by adding epoxypropane, and completing sol-gel phase transformation under a room temperature condition, so as to obtain the iridium complex. And finally, drying, grinding and roasting to obtain the iridium oxide with a nanosheet structure, wherein the thickness of the iridium oxide is 2-5 nm, and the diameter of the iridium oxide is 20-100 nm. The iridium oxide nanosheet catalyst prepared by the method has excellent proton conduction characteristics, shows excellent oxygen evolution reaction catalytic performance, is particularly suitable for an anode catalyst layer of a proton exchange membrane water electrolysis hydrogen production system, and can remarkably reduce the anode overpotential and improve the electrolysis efficiency.

The application belongs to the technical field of electrocatalysis, and particularly relates to a strontium titanate loaded with iridium clusters and a preparation method and application thereof. The strontium titanate loaded with iridium clusters provided by the application comprises: strontium titanate and iridium clusters loaded on the surface of the strontium titanate; components of the iridium clusters comprise iridium single substance and iridium oxide wrapped on the surface of the iridium single substance; the chemical composition of the strontium titanate is SrTiO 3‑x , 0 < x < 0.5; the chemical composition of the iridium oxide is IrO 2‑y , 0 < y < 2; and the strontium carbonate is a cubic octahedral structure. The strontium titanate loaded with iridium clusters not only has excellent electrocatalytic activity, but also has long-term stability, and can be efficiently and stably operated for a long time under the working conditions of PEMWE.

The present invention relates to the technical field of electrochemical catalysts and aims to provide a method for preparing an amorphous IrOx / Ru catalyst for use in PEM water electrolysis to produce hydrogen. The method comprises the following steps: ultrasonically treating metal ruthenium powder, iridium salt, and isopropyl alcohol, stirring to form a solid suspension, adding sodium nitrate powder and mixing uniformly; heating and stirring in a water bath at a constant temperature until the liquid evaporates to dryness, obtaining a brownish-yellow powder; calcining at 350-450°C, naturally cooling, adding a perchloric acid solution, ultrasonically treating, and centrifuging to obtain a black solid; and centrifuging, washing, and drying to obtain an amorphous IrOx / Ru catalyst. x / Ru catalyst. The catalyst prepared by the present invention exhibits high OER activity and good stability under acidic conditions. The iridium content in the catalyst of the present invention is only 50% of that of commercial IrO2, resulting in a low cost. The catalyst also features a small particle size, uniform distribution of iridium and ruthenium, and low crystallinity. The iridium oxide in the catalyst has a disordered structure, resulting in high catalytic activity.

The invention provides a preparation method of a rutile type iridium oxide catalyst, which comprises the following steps: S1, mixing potassium hydroxide and water to form a potassium hydroxide solution, and mixing an iridium precursor and water to form an iridium precursor solution; s2, dropwise adding the iridium precursor solution into a potassium hydroxide solution to obtain a mixed solution, and evaporating the mixed solution to dryness to obtain a mixture; and S3, mixing the mixture with a strong oxidant, calcining, and finally washing and drying to obtain the rutile type iridium oxide catalyst. According to the preparation method of the rutile type iridium oxide catalyst, the strong oxidant is added to reduce the calcination temperature to synthesize the rutile type IrO2 catalyst, so that the OER activity and stability of the rutile type IrO2 catalyst are remarkably improved, the problem of insufficient activity of IrO2 electrolyzed water is effectively solved, and the overall efficiency of PEM electrolyzed water is improved.

The invention discloses an electrolyzed water catalyst and a preparation method and application thereof, and the electrolyzed water catalyst comprises iridium oxide (IrOx) and / or ruthenium oxide (RuOx), xlt; 2, the catalyst has a stable lattice structure and a nano-scale particle size; the preparation method comprises the following steps: introducing fuel gas and an oxidizing agent into a flame burner, and igniting for combustion; and controlling the volume flow ratio of the fuel gas to the oxidant, forming a reducing atmosphere in the combustion chamber, introducing an iridium-containing or ruthenium-containing compound solution into the combustion chamber in a spraying manner, carrying out a combustion reaction to generate iridium oxide (IrOx) or ruthenium oxide (RuOx), and collecting a product after the combustion reaction to obtain the electrolyzed water catalyst. Through the mode, the electrolyzed water catalyst disclosed by the invention realizes high activity and excellent stability, and the preparation process is simple in process, good in repeatability, efficient, green and environment-friendly, and high in product quality; the electrolytic water membrane electrode using the catalyst provided by the invention realizes perfect combination of high-efficiency hydrogen production and ultra-long service life.

The application relates to the technical field of catalysts, and particularly discloses a preparation method and application of a supported iridium-based OER catalyst; the supported iridium oxide catalyst is prepared by adopting an innovative double-hydrolysis synthesis method of a precursor salt, the synthesis method is simple and controllable, the reaction temperature is controlled at 60 DEG C, is much lower than 160 DEG C required by a traditional hydrothermal method and a glycol reduction method, is more energy-saving, and is favorable for obtaining ultra-small iridium oxide nanoparticles (2-3 nm) which are uniformly dispersed; the Ir loading amount on a single electrode is 0.014 mg / cm2, the problem of a large iridium usage amount in an existing preparation process is solved, and the production cost is greatly reduced; the performance is 6 times that of a commercial iridium oxide catalyst, and when the standard potential is 1.6 V, the current density can reach 75 mA cm ‑2 . By means of the innovative synthesis strategy, the usage amount of the noble metal is effectively reduced, the catalyst of the application improves the energy conversion efficiency, and has remarkable advantages in economy and sustainability.

The application discloses a high-temperature continuous electric desalination anode and a preparation method thereof. The high-temperature continuous electric desalination anode is composed of a titanium base body, an intermediate transition layer and a surface iridium-rich active layer, and comprises the following steps: dissolving polypyrrole derivative carbon-coated iridium oxide nanoparticles, tantalum salt and transition metal salt in a solvent, uniformly mixing, coating on the surface of the titanium base body, drying, heat oxidizing, then repeatedly coating multiple times, and heat treating to obtain a titanium anode containing the intermediate transition layer; dissolving polypyrrole derivative carbon-coated iridium oxide nanoparticles, tantalum salt and transition metal salt in a solvent, uniformly mixing, coating on the surface of the titanium anode containing the intermediate transition layer, drying, heat oxidizing, repeatedly coating multiple times, and finally heat treating. The application reduces the comprehensive cost of the iridium tantalum coating and prolongs the service time by amorphous carbon coating of iridium oxide nanoparticles, introduction of relatively cheap transition metal elements and gradient composition design, and the obtained anode exhibits excellent voltage stability characteristics at 75 DEG C.

The application discloses a kind of metal organic framework supported iridium oxide catalytic materials and preparation method and application thereof, belong to electrolytic catalyst preparation technical field.The preparation method is mainly based on ZIF-67 / NF composite material supported by nickel foam, and introduces iridium (Ir) by impregnation method to improve catalytic performance, the introduction of Ir not only significantly enhances the activity of catalyst in OER, also by adjusting the electronic structure of Co (OH) 2, improves its performance in HER.IrOx Amorphous state characteristics and the synergistic effect of Co (OH) 2 matrix optimize the conductivity of catalyst, and effectively reduce the overpotential of hydrogen evolution reaction, show higher electrocatalytic activity and excellent long-term stability.

The present invention relates to: a catalyst for water electrolysis, having a coating layer including iridium oxide particles and titanium oxide, wherein the coverage rate of the coating layer is 30-120%; and an ink composition, an electrode for water electrolysis, and a water electrolysis cell, each comprising the catalyst for water electrolysis.

The invention belongs to the technical field of water electrolysis hydrogen production materials, and discloses an IrSnOx / Ti porous transmission electrode and a preparation method and application thereof. The preparation method comprises the following steps: S1, pretreating the surface of the titanium felt; s2, taking a titanium felt as a cathode and a platinum sheet electrode as an anode, performing constant-current tin deposition in the tin electrodeposition liquid until the tin loading capacity is 0.3 mg / cm < 2 >-2mg / cm < 2 > to obtain a Sn / Ti electrode, washing the Sn / Ti electrode with deionized water, and drying the Sn / Ti electrode; s3, in a three-electrode system, taking Sn / Ti as a working electrode, taking a saturated calomel electrode and a platinum sheet electrode as a reference electrode and a counter electrode, and carrying out constant-voltage electrodeposition on amorphous iridium oxide in the iridium oxide electrodeposition liquid until the loading capacity of iridium is 0.2 mg / cm < 2 >, so as to obtain an IrSn / Ti electrode; s4, the IrSn / Ti electrode is subjected to heat treatment for 0.5-5 h at the temperature of 200-500 DEG C, and the IrSnOx / Ti porous transmission electrode is obtained. The use amount of precious metal of the membrane electrode can be effectively reduced, the titanium felt is uniformly coated, and the stability is excellent.

The invention belongs to the technical field of electro-catalysis, and particularly relates to an organic metal framework UIO-66 supported iridium catalyst as well as a preparation method and application thereof. The organic metal framework UIO-66 supported iridium catalyst provided by the invention comprises an organic metal framework UIO-66 and an iridium cluster supported on the surface of the organic metal framework UIO-66, the iridium cluster comprises the following components: an iridium elementary substance and an iridium oxide wrapping the surface of the iridium elementary substance; the chemical composition of the organic metal framework UIO-66 is C48H28O32M6, wherein M is Hf and / or Zr; the chemical composition of the iridium oxide is IrOx, wherein x is more than 0 and less than 2. The organic metal framework UIO-66 supported iridium catalyst not only has excellent electrocatalytic activity, but also has long-term stability, and can efficiently and stably operate for more than 1300h for a long time under the working conditions of strong acidity and oxidation environment in PEMWE.

The application provides a preparation method of an iridium-tin catalyst, a product and an application thereof. The method comprises the following steps: preparing an aqueous solution of an iridium source and a tin source under the action of a complexing agent and in an alkaline condition; removing water to obtain a catalyst precursor; and calcining under an oxygen-containing atmosphere, and then performing post-treatment to obtain the product. The preparation process of the application does not use raw materials such as organic solvents, sodium borohydride and surfactants, and does not emit harmful gases such as NOx during calcination, and is lower in cost and more environmentally friendly; and the atomic utilization rate of the transition metal can reach 100%. In the catalyst, Sn is more uniformly doped, and the catalyst is not phase-separated at a high Ir / Sn ratio or a low Ir / Sn ratio; when the catalyst is used as an anode catalyst for water electrolysis of a proton exchange membrane, the catalyst has higher catalytic activity than a commercial iridium oxide catalyst, and the cost is significantly reduced.