199 results about "Iridium oxide" patented technology

Iridium-based catalysts and methods of making the catalysts are described. The catalyst comprises a catalyst material comprising particles comprising iridium or a mixture of iridium and iridium oxide. The particles include an interconnected network of nanoparticles. The particles are in the range of 50 nm to 1 [mu] m, and the nanoparticles are in the range of 2 nm to 15 nm. It may have a BET surface area of 30 m2 / g or greater and a pore volume of at least 0.10 cc / g. The catalyst is prepared using an organic structure directing agent.

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.

Provided are an iridium-oxide-based catalyst and a preparation method therefor and the use thereof, and a membrane electrode and a preparation method therefor and the use thereof. The catalyst comprises an oxide of iridium, wherein the oxide of iridium comprises an oxide of iridium having vacancies, the vacancies comprising iridium vacancies or oxygen vacancies; and iridium oxide comprises metastable-phase iridium oxide. A hydrogen-oxygen flame method is used as the preparation method for the catalyst, and can respectively regulate and control vacancies and crystal phases. The catalyst has both high-activity defect vacancies and stable high-activity crystal phases, and has a low overpotential and a high oxygen evolution catalyzing activity when being applied to water electrolysis.

The invention discloses a miniaturized low-profile flexible ocean galvanic couple type pH sensor and a preparation method thereof, and aims to solve the problems of large profile thickness and insufficient reliability of the conventional flexible pH sensor. A working electrode system and a reference electrode system in the miniaturized low-profile flexible ocean galvanic couple pH sensor are arranged on a flexible polyimide substrate, and the working electrode system comprises an iridium oxide working electrode, a first metal conduction circuit layer and a first metal bonding pad; the iridium oxide working electrode is connected with the first metal bonding pad through the first metal conduction circuit layer, the reference electrode system comprises a reference electrode, a second metal conduction circuit layer and a second metal bonding pad, and the reference electrode is connected with the second metal bonding pad through the second metal conduction circuit layer. The pH response performance is remarkably improved by utilizing the nanocrystalline iridium oxide sensing layer, the sensitivity reaches 72.76 mV / pH, and 16.84 s quick response is realized in a 3m / s high-flow-speed marine environment.

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 field of water electrolysis hydrogen production electrode materials, and particularly relates to a local amorphous porous iridium oxide, preparation thereof and application of the local amorphous porous iridium oxide in OER catalyst.The preparation method of the local amorphous porous iridium oxide comprises the steps that a mixed raw material of an iridium source, an organic-inorganic synergistic regulator and sodium-based composite salt is subjected to roasting treatment, and the local amorphous porous iridium oxide is obtained; and then carrying out quenching treatment to obtain the local amorphous porous iridium oxide. The organic-inorganic synergistic regulator comprises a La inorganic substance and an organic substance shown as a formula 1 (# imgabs0 #) in a weight ratio of (1-10): (10-50); the sodium-based composite salt comprises sodium nitrate and sodium chloride; in the formula 1, R is H, alkyl or substituted alkyl. The material prepared by the preparation method disclosed by the invention is excellent in performance under a high-temperature condition, and can stably operate under the conditions of frequent start and stop and large current.

The invention discloses a method for synthesizing p-aminophenol through electrolytic reduction, which comprises the following steps: carrying out electrolysis by adopting a diaphragm electrolytic cell and taking an oxidation reaction of hydrogen as an anode reaction, taking a reduction reaction of nitrobenzene as a cathode reaction, taking a sulfuric acid aqueous solution as an anode liquid and taking an aqueous solution containing nitrobenzene and sulfuric acid as a cathode liquid, and recycling an electrolysis product in the cathode liquor to obtain the p-aminophenol. According to the invention, the oxidation reaction of hydrogen is used as the anode reaction, a membrane electrode or a gas diffusion electrode is preferably used as the anode, and an iridium oxide anode and a lead anode are not used, so that the cost is effectively reduced or pollution is avoided; the electrolytic reaction is carried out under the condition that the pressure intensity of the anode chamber is not lower than that of the cathode chamber, the electrolytic voltage is reduced by about 1.6-2.3 V (compared with an iridium oxide anode), the energy consumption is obviously reduced, and the yield of p-aminophenol is improved by about 10%.

The invention discloses a metal organic framework loaded iridium oxide catalytic material as well as a preparation method and application thereof, and belongs to the technical field of electrolytic catalyst preparation. The preparation method is mainly based on a foamed nickel supported ZIF-67 / NF composite material, iridium (Ir) is introduced through an impregnation method to improve the catalytic performance, the introduction of Ir not only significantly enhances the activity of the catalyst in OER, but also improves the performance of the catalyst in HER by adjusting the electronic structure of Co (OH) 2. The conductivity of the catalyst is optimized by the synergistic effect of the amorphous characteristic of IrOx and the Co (OH) 2 matrix, the overpotential of hydrogen evolution reaction is effectively reduced, and higher electrocatalytic activity and excellent long-term stability are shown.

The invention discloses a mixed molten salt method for rapidly preparing short-range ordered iridium oxide for PEM electrolyzed water, and belongs to the technical field of preparation of catalytic materials. According to the method, the short-range ordered iridium oxide can be prepared within 20 minutes to 2 hours. High-melting-point mixed molten salt is introduced as a reaction medium, so that iridium salt is uniformly dispersed, agglomeration is effectively reduced, and the preparation efficiency is improved; a morphology control template is not needed, the process is simplified, and the cost is reduced; by adjusting reaction parameters, the morphology and size of iridium oxide can be flexibly regulated and controlled, the particle size of a single nano crystal grain is 1.7-2.7 nm, and a short-range ordered structure is formed. The short-range ordered iridium oxide provides more active sites, enhances the structural stability, is good in dispersity, can be directly used as catalyst slurry, and realizes high catalytic activity under extremely low loading capacity; when the composite material is applied to a proton exchange membrane water electrolysis hydrogen production anode catalytic material, the catalyst cost is reduced, the energy conversion efficiency is improved, an electrolytic cell reaches high current density under low voltage, the performance is stable, and green hydrogen economic development is promoted.

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 discloses a mesoporous iridium oxide catalyst and a preparation method and application thereof. The preparation method comprises the following steps: dissolving an iridium-containing compound, nitrate and urea in water, and uniformly stirring and mixing to obtain a mixed solution; carrying out rotary evaporation drying on the mixed solution to obtain a uniform catalyst precursor; calcining the precursor in an air atmosphere to obtain an iridium oxide catalyst; the iridium-containing compound comprises but not limited to one or more of chloroiridic acid, potassium chloroiridate and iridium trichloride, the nitrate comprises but not limited to one or more of sodium nitrate, ammonium nitrate and potassium nitrate, the molar ratio of the urea to the iridium-containing compound in the mixed solution is (1-100): 1, and the molar ratio of the nitrate to the iridium-containing compound is (1-100): 1; the mesoporous iridium oxide prepared by the invention has an ultrahigh specific surface area, is beneficial to exposure of active sites and optimization of mass transfer in a reaction process, and effectively reduces the noble metal loading capacity of a proton exchange membrane electrolyzed water anode catalyst.

The invention relates to the technical field of electrode materials and electrochemical catalysis, in particular to a manganese iridium oxide catalyst composite electrode material based on a growth substrate and a preparation method and application of the manganese iridium oxide catalyst composite electrode material based on the growth substrate. The amorphous manganese iridium oxide catalyst grows on the growth substrate in a repeated calcination mode, and is compounded with the growth substrate to form the electrode material. The prepared composite electrode material is rich in oxygen vacancies by repeatedly carrying out the operations of dropwise adding, drying and calcining for multiple times, so that the composite electrode material has the advantage of high catalytic activity. The titanium felt with the three-dimensional net-shaped porous structure is used as a growth substrate, gas transmission of the composite electrode material can be guaranteed, uniform distribution of the composite electrode material can be maintained, and the prepared composite electrode material has excellent acidic oxygen evolution reaction catalytic performance in cooperation with a multi-time calcination mode, can reach industrial-grade large current and can achieve high stability.

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 invention provides an iridium oxide-based catalyst as well as a preparation method and application thereof. The catalyst includes an oxide of iridium, the oxide of iridium including an oxide of iridium having vacancies; the types of the vacancies comprise iridium vacancies or oxygen vacancies; the iridium oxide includes metastable-phase iridium oxide. The invention also provides an application of the catalyst in an electro-catalysis oxygen evolution reaction. According to the preparation method of the catalyst, an oxyhydrogen flame method is utilized, and vacancy and crystal phase of iridium oxide can be regulated and controlled respectively. The iridium oxide-based catalyst simultaneously contains high-activity defect vacancies and a stable high-activity crystal phase, and has relatively low overpotential and relatively high oxygen evolution catalytic activity when being applied to water electrolysis.

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 discloses a method for preparing ethylene and co-producing ethylene oxide through carbon dioxide electro-catalysis, which realizes efficient conversion of carbon dioxide into ethylene and ethylene oxide by optimizing the composition and structure of a catalyst, improving the activity and selectivity of the catalyst and combining an innovative reaction system design. By using the Cu-Ag nano-alloy catalyst, the dispersity and the stability of the catalyst are enhanced, so that the selectivity of ethylene is improved. The BaOx / IrO2 catalyst is prepared by loading metal barium oxide on an industrial catalyst iridium oxide (IrO2), so that cracking of hypochlorous acid is efficiently inhibited, and the conversion rate of preparing ethylene oxide from ethylene is increased. By constructing a novel oxidation-reduction electrochemical system, the reaction of preparing ethylene from CO2 and the reaction of preparing ethylene oxide from ethylene are carried out in the same electrolyzer, so that the total Faraday efficiency from carbon dioxide (CO) to ethylene oxide in the whole electrochemical system reaches 35.2%, the total battery voltage is about 2V, the ethylene oxide selectivity exceeds 90%, and the electrochemical performance is good. The selectivity is far higher than that of ethylene oxide in industry.

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 present invention discloses a platelet-targeting peptide conjugated iridium oxide nanoparticle and its preparation method and application. The structural formula of the nanoparticle is as follows: IrO x -P; wherein, P represents a P-selectin targeting peptide, and the amino acid sequence is as shown in SEQ ID No.1; IrO x -P, in which Ir 3+ and Ir 4+ coexist. The IrO x -P nanoparticles provided by the present invention utilize photothermal-induced vascular damage to achieve secondary enrichment of IrO x -P, realizing the combined and highly efficient treatment of PTT and ferroptosis, while reducing the side effects brought by PTT. In addition, IrO x -P can achieve oxidation-enhanced photoacoustic imaging, which will provide new ideas and methods for tumor-targeted diagnosis and treatment integration.

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.