A high-performance integrated oxygen evolution reaction electrode material, preparation method and application

Abstract

The present invention provides a high-performance integrated oxygen evolution reaction electrode material, preparation method, and application, comprising the following steps: using electrochemical deposition technology to achieve in-situ growth of amorphous manganese oxide on the surface of a high-conductivity three-dimensional electrode material; achieving different manganese oxide crystal structures through high-temperature calcination treatment; and combining cation exchange technology to modify highly active sites on the surface interface of different manganese oxide-loaded three-dimensional electrode materials to achieve the preparation of high-performance acidic oxygen evolution electrodes. The manganese oxide crystal structure obtained using this method is rich in edge-sharing MnO6 octahedral structural elements, which is beneficial for maintaining the structural stability of the catalyst and improving the catalytic activity in the acidic reaction system. The three-dimensional electrode material prepared using the present invention has high acidic oxygen evolution reaction activity and is easy to operate, controllable, and highly reproducible.

Description

Technical Field

[0001] The present invention relates to the technical field of nanomaterials and energy technologies, and in particular to a high-performance integrated oxygen evolution reaction electrode material, a preparation method and an application thereof. Background Art

[0002] High-purity hydrogen production from water electrolysis is a key area of ​​recent development in new energy. Electrochemical energy storage and conversion technologies, exemplified by proton exchange membrane (PEM) water electrolysis, have attracted widespread global attention due to their ability to effectively address the intermittent supply constraints of renewable clean energy and their environmentally friendly nature. However, energy consumption, driven by the catalytic performance of the oxygen evolution reaction (OER), hinders the technical and economic feasibility of PEM water electrolysis for large-scale market adoption. Despite significant progress in the development of acidic OER catalysts suitable for PEM technology, the primary focus has been on the development and design of powdered active materials. Consequently, the bonding strength between the active material and the conductive current collector is limited by the chromatographic properties of the binder. Maintaining the stability of the working electrode under external conditions, such as binder aging caused by the oxidative reaction environment and mechanical erosion of the electrolyte, remains a significant challenge. Furthermore, the multi-interface system resulting from the supported structure reduces electrode conductivity and increases system internal resistance, while also limiting the active material loading capacity. By in-situ growing on the surface of a conductive substrate, and utilizing chemical or non-chemical bonding, the integrated design of the conductive current collector and catalytic material has become an ideal electrode preparation method. This in-situ composite strategy not only increases the effective loading of the active material, but also provides a tight connection that takes into account both the electrical contact between the active material and the current collector and the stability of the electrode structure.

[0003] Manganese oxides are low-cost, environmentally friendly, and acid-stable transition metal oxides. Based on the diverse bonding patterns of the MnO6 octahedral unit, they exhibit a rich variety of polymorphic structures, such as MnO, MnO2, Mn2O3, and Mn3O4. These polymorphic structures are considered promising materials for a wide range of electrochemical applications. MnO2, with its extensive corner-sharing structure, is the most widely studied alkaline OER catalytic material. However, cutting-edge research has found that these materials often undergo a phase transition to an edge-sharing octahedral structure at the interface after the OER reaction. These findings suggest that edge-sharing polymorphic manganese oxides (such as MnO and Mn2O3), with their shorter interatomic distances and more bonding sites than conventional MnO2, may be more favorable for the OER reaction. However, their diverse metastable nature poses challenges in the controlled synthesis of specific crystalline structures for manganese oxides. At the same time, the acidic OER catalytic performance of single manganese oxide is limited and cannot meet the basic performance requirements for commercial applications. Relying on the atomic structure characteristics of manganese oxide to further enhance the intrinsic catalytic activity of the material is another challenge to be solved. Summary of the Invention

[0004] The technical problem to be solved by the present invention is: In view of the shortcomings of the prior art described above, the present invention provides a high-performance integrated oxygen evolution reaction electrode material, preparation method, and application to address the difficulties in integrated design and low catalytic performance of existing electrode materials. The preparation method of the present invention obtains an in-situ grown ruthenium-loaded manganese oxide electrode material, which can achieve in-situ, controllable synthesis of manganese oxide polycrystalline materials (MnO, Mn2O3, Mn3O4, etc.) with rich edge-sharing atomic structural features on the surface of the conductive current collector. Through cation exchange, the manganese oxide interface cations are replaced with highly active precious metal elements (ruthenium, iridium, etc.), achieving a further leap in OER performance and greatly improving the intrinsic activity of the active sites.

[0005] The technical solution adopted by the present invention to solve the technical problem is: a method for preparing a high-performance integrated oxygen evolution reaction electrode material, comprising the following steps:

[0006] S1: In a three-electrode system, a high-conductivity three-dimensional electrode material is placed in an acidic electrolyte containing manganese ions, and amorphous manganese oxide is grown in situ on the surface of the electrode material by electrochemical deposition.

[0007] S2: The electrode material having amorphous manganese oxide on the surface obtained in step S1 is subjected to a high-temperature calcination treatment to controllably synthesize different manganese oxide crystal structures, wherein the manganese oxide includes one or more of MnO, Mn2O3, and Mn3O4;

[0008] S3: Combined with cation exchange, the surface interface of different manganese oxide-loaded three-dimensional electrode materials obtained in step S2 is modified with ruthenium sites (i.e., high-activity sites) to obtain high-performance acidic oxygen evolution electrode materials, thereby realizing the preparation of high-performance acidic oxygen evolution electrodes.

[0009] Preferably, the high-conductivity three-dimensional electrode material is one or more of carbon paper, carbon cloth, titanium felt, and stainless steel.

[0010] Furthermore, before the electrochemical deposition treatment in step S1, the substrate of the three-dimensional high-conductivity electrode material is treated with one or more of acetone, methanol, ethanol, deionized water, nitric acid, hydrochloric acid, and sulfuric acid. This treatment first removes impurities from the substrate surface and then effectively changes the hydrophilicity of the interface (the untreated substrate surface has localized hydrophobicity), which helps to improve the effective contact between the substrate and the electrolyte during the electrodeposition process.

[0011] Furthermore, the acidic electrolyte containing manganese ions in step S1 is an aqueous solution containing 0.5 M H2SO4, 0.2 M manganese salt and 0.6 M potassium salt, wherein M is mol / L.

[0012] Preferably, the manganese salt is one or more of manganese acetate, manganese sulfate, manganese nitrate, manganese chloride and manganese perchlorate.

[0013] Preferably, the potassium salt refers to one or more of potassium acetate, potassium sulfate, potassium nitrate, potassium chloride, and potassium perchlorate.

[0014] Specifically, the electrochemical deposition method in step S1 refers to performing an in-situ electrochemical deposition process for 30 to 10,000 seconds under a constant current density, wherein the constant current density is 0.1-10 mA cm -2 .

[0015] Furthermore, the high-temperature calcination process in step S2 is carried out under the protection of an inert gas such as nitrogen or argon.

[0016] Furthermore, in step S2, the high temperature calcination temperature is 100-900°C and the time is 1-3 hours. During the high temperature calcination process, the temperature is maintained at a constant temperature, and the material is subjected to a constant temperature heat treatment, and the temperature does not change during the constant temperature process.

[0017] Specifically, the cation exchange method in step S3 refers to immersing the three-dimensional electrode material loaded with manganese oxide in an aqueous solution containing ruthenium or iridium ions for 0.01-1 hour. After the immersion, it is washed with deionized water multiple times, and then dried and calcined.

[0018] The aqueous solution of ruthenium ions is prepared using a ruthenium salt with a salt ion concentration of 19 mol / L; the ruthenium salt is selected from one or more of ruthenium acetate, ruthenium nitrate, and ruthenium chloride;

[0019] The aqueous solution of iridium ions is prepared using iridium salts with a salt ion concentration of 19 mol / L; the iridium salts are selected from one or more of iridium acetate, iridium nitrate, and iridium chloride.

[0020] Furthermore, the drying step is performed at a temperature of 50-80° C. for 2-24 hours.

[0021] Furthermore, the calcination atmosphere is air, the temperature is 150-250° C., and the calcination time is 0.5-3 hours.

[0022] The preparation method of this invention utilizes electrochemical deposition to achieve in-situ growth of amorphous manganese oxide on the surface of a high-conductivity three-dimensional electrode material. High-temperature calcination allows for the controlled synthesis of different manganese oxide crystal structures (MnO, Mn2O3, and Mn3O4). Combined with cation exchange technology, highly active sites (such as Ru) are modified on the surface of the various manganese oxide-loaded three-dimensional electrode materials, enabling the preparation of high-performance acidic oxygen evolution electrodes. The manganese oxide crystal structures (MnO, Mn2O3, and Mn3O4) obtained using this preparation method are rich in edge-sharing MnO6 octahedral structural units, which facilitates structural stability and enhances catalytic activity in acidic reaction systems. The three-dimensional electrode materials prepared using this method exhibit high activity in the acidic oxygen evolution reaction. The method is easy to operate, highly controllable, and reproducible, making it an ideal technical approach for preparing a new generation of acidic oxygen evolution electrode materials.

[0023] A high-performance integrated oxygen evolution reaction electrode material is obtained by adopting the above-mentioned preparation method.

[0024] Furthermore, the electrode material includes noble metal element active sites, a manganese oxide crystal structure with edge-sharing MnO6 octahedral structural elements, and a corrosion-resistant, high-conductivity three-dimensional electrode material substrate.

[0025] The invention discloses an application of a high-performance integrated oxygen evolution reaction electrode material, wherein the high-performance integrated oxygen evolution reaction electrode material is used as an anode material of an acidic aqueous solution electrolysis cell.

[0026] The beneficial effects of the present invention are:

[0027] (1) The high-performance integrated oxygen evolution reaction electrode material of the present invention realizes the integration of manganese oxide polycrystalline structure and conductive current collector, effectively improving the electrical contact between the active material and the current collector and the stability of the electrode structure. Furthermore, through the controllable synthesis of manganese-based polycrystalline materials rich in edge-sharing structures and the in-situ interface substitution of ruthenium components through cation exchange, the catalytic performance of the active material for oxygen evolution reaction is significantly improved.

[0028] (2) The high-performance integrated oxygen evolution reaction electrode material of the present invention can be used as a high-performance acidic oxygen evolution reaction electrocatalytic material to efficiently carry out oxygen evolution reaction (OER) in an acidic electrolyte environment. It can be used as an anode material for hydrogen production by electrolysis of water and used in a proton-conducting polymer membrane electrolysis hydrogen production electrolytic cell to solve the problems of easy shedding and poor structural stability of existing acidic oxygen evolution powder catalysts. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention will be further described below with reference to the accompanying drawings and examples.

[0030] Figure 1 Shown are schematic diagrams of the atomic structures of different crystalline manganese oxides described in the examples.

[0031] Figure 2 Shown are the XRD diffraction patterns of the in-situ grown electrode materials described in different embodiments.

[0032] Figure 3 Shown are scanning electron microscope test images of in-situ grown manganese oxide samples in different examples.

[0033] Figure 4 Shown are scanning electron microscope test images of Ru-MnO / CC and Ru-Mn2O3 / CC samples after ruthenium cation exchange.

[0034] Figure 5 Shows the oxygen evolution catalytic performance of the integrated electrode material. DETAILED DESCRIPTION

[0035] The present invention is further described below with reference to specific examples. It should be understood that these examples are only used to illustrate the present invention and are not used to limit the scope of protection of the present invention.

[0036] The following describes the embodiments of the present invention through specific examples. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments, and the details in this specification may be modified or altered based on different viewpoints and applications without departing from the spirit of the present invention.

[0037] It should be noted that the process equipment or devices not specifically specified in the following examples are all conventional equipment or devices in the art; all pressure values ​​and ranges refer to relative pressures.

[0038] Furthermore, it should be understood that the one or more method steps mentioned in the present invention do not exclude the presence of other method steps before or after the combination step, or the insertion of other method steps between these explicitly mentioned steps, unless otherwise specified. It should also be understood that the combination connection relationship between one or more devices / apparatuses mentioned in the present invention does not exclude the presence of other devices / apparatuses before or after the combination device / apparatus, or the insertion of other devices / apparatuses between two explicitly mentioned devices / apparatuses, unless otherwise specified. Furthermore, unless otherwise specified, the numbering of each method step is merely a convenient tool for identifying each method step, and is not intended to limit the order of arrangement of each method step or to define the scope of the present invention. Changes or adjustments to their relative relationships, without substantially changing the technical content, should also be considered within the scope of the present invention.

[0039] Example 1:

[0040] 0.05 mol sulfuric acid, 0.02 mol manganese sulfate, and 0.06 mol potassium sulfate were fully dispersed and dissolved in 100 ml deionized water to obtain a mixed solution. The mixed solution was used as the electrolyte, the carbon cloth washed with ethanol was used as the working electrode, and the carbon paper was used as the counter electrode. -2 After 180s of treatment under current density conditions, the working electrode was taken out, washed with deionized water and ethanol, and dried at 70℃ for 2h. Then, it was calcined at 300℃ for 1h under N2 atmosphere to obtain MnO x / CC.

[0041] MnO x The / CC sample was subjected to cation exchange reaction in 19 mmol / lRuCl3 solution. After 1 hour of reaction, the sample was taken out, washed with a large amount of deionized water for several times, dried at 80℃ for 12 hours, and calcined at 200℃ in air atmosphere for 1 hour. It was naturally cooled to room temperature to obtain Ru-MnO x / CC electrode samples.

[0042] Example 2:

[0043] 0.05 mol sulfuric acid, 0.02 mol manganese nitrate, and 0.06 mol potassium nitrate were fully dispersed and dissolved in 100 ml of deionized water to obtain a mixed solution. The mixed solution was used as the electrolyte, the carbon cloth washed with ethanol was used as the working electrode, and the carbon paper was used as the counter electrode. -2After 1800s of treatment under the current density condition, the working electrode was removed, washed with deionized water and ethanol, and dried at 70°C for 2h. It was then calcined at 450°C for 1h under N2 atmosphere to obtain Mn2O3 / CC.

[0044] The Mn2O3 / CC sample was subjected to cation exchange reaction in 19 mmol / lRuCl3 solution. After 1 hour of reaction, the sample was taken out, washed several times with a large amount of deionized water, dried at 80°C for 12 hours, and calcined in air atmosphere at 200°C for 1 hour. The Ru-Mn2O3 / CC electrode sample was obtained by natural cooling to room temperature.

[0045] Example 3:

[0046] 0.05 mol sulfuric acid, 0.02 mol manganese acetate, and 0.06 mol potassium acetate were fully dispersed and dissolved in 100 ml of deionized water to obtain a mixed solution. The mixed solution was used as the electrolyte, the carbon cloth washed with ethanol was used as the working electrode, and the carbon paper was used as the counter electrode. The electrolyte was stirred at 0.2 mA cm -2 After 9000 s of treatment at the same current density, the working electrode was removed, washed with deionized water and ethanol, and dried at 70°C for 2 h. It was then calcined at 600°C for 1 h under a nitrogen atmosphere to obtain MnO / CC.

[0047] The MnO / CC sample was subjected to cation exchange reaction in a 19 mmol / l RuCl3 solution. After 0.5 h of reaction, the sample was taken out, washed several times with a large amount of deionized water, dried at 80°C for 12 h, and calcined in an air atmosphere at 200°C for 1 h. The Ru-MnO / CC electrode sample was obtained by natural cooling to room temperature.

[0048] Example 4:

[0049] 0.05 mol sulfuric acid, 0.02 mol manganese sulfate, and 0.06 mol potassium sulfate were fully dispersed and dissolved in 100 ml deionized water to obtain a mixed solution. The mixed solution was used as the electrolyte, the carbon cloth washed with ethanol was used as the working electrode, and the carbon paper was used as the counter electrode. -2 After 180 seconds of treatment under the current density condition, the working electrode was removed, washed with deionized water and ethanol, and dried at 70°C for 2 hours. It was then calcined at 750°C for 1 hour under N2 atmosphere to obtain MnO-Mn3O4 / CC.

[0050] The MnO-Mn3O4 / CC sample was subjected to cation exchange reaction in 19 mmol / lRuCl3 solution. After the reaction for 0.05 h, the sample was taken out, washed with a large amount of deionized water several times, dried at 80°C for 12 h, and calcined in air atmosphere at 200°C for 1 h. The Ru-MnO-Mn3O4 / CC electrode sample was obtained by natural cooling to room temperature.

[0051] Example 5:

[0052] 0.05 mol sulfuric acid, 0.02 mol manganese sulfate, and 0.06 mol potassium sulfate were fully dispersed and dissolved in 100 ml deionized water to obtain a mixed solution. The mixed solution was used as the electrolyte, the carbon cloth washed with ethanol was used as the working electrode, and the carbon paper was used as the counter electrode. -2 After 180 seconds of treatment under the current density condition, the working electrode was removed, washed with deionized water and ethanol, and dried at 70°C for 2 hours. It was then calcined at 900°C for 1 hour under N2 atmosphere to obtain Mn3O4 / CC.

[0053] The MnO-Mn3O4 / CC sample was subjected to cation exchange reaction in 19 mmol / lRuCl3 solution. After the reaction for 0.05 h, the sample was taken out, washed with a large amount of deionized water several times, dried at 80°C for 12 h, and calcined in air atmosphere at 200°C for 1 h. The Ru-MnO-Mn3O4 / CC electrode sample was obtained by natural cooling to room temperature.

[0054] Example 6:

[0055] 0.05 mol sulfuric acid, 0.02 mol manganese sulfate, and 0.06 mol potassium sulfate were fully dispersed and dissolved in 100 ml deionized water to obtain a mixed solution. The mixed solution was used as the electrolyte, the carbon cloth washed with ethanol was used as the working electrode, and the carbon paper was used as the counter electrode. -2 After 180 seconds of treatment under the current density condition, the working electrode was removed, washed with deionized water and ethanol, and dried at 70°C for 2 hours. It was then calcined at 600°C for 1 hour under N2 atmosphere to obtain MnO / CC.

[0056] The MnO-Mn3O4 / CC sample was subjected to cation exchange reaction in 19 mmol / l IrCl3 solution. After the reaction for 0.05 h, the sample was taken out, washed several times with a large amount of deionized water, dried at 80°C for 12 h, and calcined in air atmosphere at 200°C for 1 h. The sample was naturally cooled to room temperature to obtain the Ir-MnO / CC electrode sample.

[0057] Note: The main differences between Examples 1 to 6 are the different conditions for electrochemical deposition, the different high-temperature calcination temperatures, and the different aqueous solutions of ruthenium or iridium ions used for cation exchange. Different manganese oxide crystal structures are synthesized by controlling the conditions for electrochemical deposition and the high-temperature calcination temperature.

[0058] Test Description:

[0059] The in-situ grown electrode materials obtained in Examples 1-5 were subjected to X-ray testing, and the test results are shown in Figure 1 .from Figure 1 It can be seen that the manganese oxides with different crystalline structures including Mn2O3, MnO, and Mn3O4 are successfully combined with the conductive current collector. Figure 2 It can be seen that manganese oxides of different crystal phases have rich octahedral edge-sharing atomic structural characteristics, which is beneficial to the improvement of the catalytic performance of the active components and the improvement of their stability.

[0060] The in-situ grown electrode material samples obtained in Examples 1-5 were subjected to scanning electron microscopy characterization tests, and the results are shown in FIG. Figure 3 .from Figure 3 It can be seen that the manganese oxide catalytic material is evenly distributed on the surface of the conductive current collector described in Examples 1-5. As the calcination conditions change, the structural characteristics of the manganese oxide change, but it is always in close contact with the current collector interface, which is beneficial to accelerate the charge transport rate and reduce the internal resistance of the system.

[0061] The Ru-Mn2O3 / CC and Ru-MnO / CC electrode samples obtained in Examples 2 and 3 were characterized by scanning electron microscopy. Figure 4 .from Figure 4 It can be seen that the microstructure of the electrode material does not change significantly after the cation exchange reaction treatment, and the active components still maintain close contact with the current collector.

[0062] The catalytic activity of the integrated electrode materials obtained in Examples 1-4 and 6 in the oxygen evolution reaction in a 0.1M HClO4 aqueous solution was determined. The results are shown in FIG. Figure 5 .from Figure 5 It can be seen that different integrated electrode materials all showed excellent OER catalytic performance in acidic electrolyte systems, among which Ru-Mn2O3 / CC integrated electrode material showed the best OER catalytic performance at 10 mAcm -2 The overpotential under current density conditions is only 170 mV, which is better than most other reported acidic OER catalysts.

[0063] In summary, the present invention provides a high-performance integrated electrode material suitable for acidic electrolyte systems and its preparation method. The prepared high-performance integrated electrode material can be used as the anode material for electrolytic cells for hydrogen production by water electrolysis, resolving the problems of low performance and poor structural stability of existing oxygen evolution reaction catalysts in acidic electrolyte systems. The prepared integrated electrode material exhibits excellent oxygen evolution reaction activity in acidic systems, far exceeding that of most reported related catalysts. Therefore, the present invention effectively overcomes the various shortcomings of the existing technology and has high industrial application value.

[0064] With the above-described preferred embodiments of the present invention as inspiration, and with reference to the above description, relevant personnel may make various changes and modifications without departing from the scope of the present invention. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A method for preparing a high-performance integrated oxygen evolution reaction electrode material, characterized by: The following steps are involved: S1: In a three-electrode system, a high-conductivity three-dimensional electrode material is placed in an acidic electrolyte containing manganese ions, and amorphous manganese oxide is grown in situ on the surface of the electrode material by electrochemical deposition. The acidic electrolyte containing manganese ions is an aqueous solution containing 0.5 M H2SO4, 0.2 M manganese salt, and 0.6 M potassium salt. S2: The electrode material having amorphous manganese oxide on the surface obtained in step S1 is subjected to a high-temperature calcination treatment to controllably synthesize different manganese oxide crystal structures rich in edge-shared MnO6 octahedral structural units, wherein the manganese oxide includes one or more of MnO, Mn2O3, and Mn3O4; S3: Combined with cation exchange means, the surface interface of different manganese oxide-loaded three-dimensional electrode materials obtained in step S2 is modified with high-activity sites to obtain high-performance acidic oxygen evolution electrode materials, wherein the high-activity sites are ruthenium sites or iridium sites.

2. The method for preparing a high-performance integrated oxygen evolution reaction electrode material according to claim 1, wherein: The high-conductivity three-dimensional electrode material is one or more of carbon paper, carbon cloth, titanium felt, and stainless steel.

3. The method for preparing a high-performance integrated oxygen evolution reaction electrode material according to claim 1, wherein: Before the electrochemical deposition treatment in step S1 , the substrate of the three-dimensional high-conductivity electrode material is treated with one or more of acetone, methanol, ethanol, deionized water, nitric acid, hydrochloric acid, and sulfuric acid.

4. The method for preparing a high-performance integrated oxygen evolution reaction electrode material according to claim 1, wherein: The manganese salt refers to one or more of manganese acetate, manganese sulfate, manganese nitrate, manganese chloride, and manganese perchlorate.

5. The method for preparing a high-performance integrated oxygen evolution reaction electrode material according to claim 1, wherein: The potassium salt refers to one or more of potassium acetate, potassium sulfate, potassium nitrate, potassium chloride, and potassium perchlorate.

6. The method for preparing a high-performance integrated oxygen evolution reaction electrode material according to claim 1, wherein: The electrochemical deposition method in step S1 refers to performing an in-situ electrochemical deposition process for 30 to 10,000 seconds under a constant current density, wherein the constant current density is 0.1-10 mA cm -2 .

7. The method for preparing a high-performance integrated oxygen evolution reaction electrode material according to claim 1, wherein: The high-temperature calcination process in step S2 is carried out under the protection of an inert gas.

8. The method for preparing a high-performance integrated oxygen evolution reaction electrode material according to claim 1, wherein: In step S2, the high temperature calcination temperature is 100-900° C. and the time is 1-3 hours.

9. The method for preparing a high-performance integrated oxygen evolution reaction electrode material according to claim 1, wherein: In step S3, the cation exchange method involves immersing the three-dimensional electrode material loaded with manganese oxide in an aqueous solution containing ruthenium or iridium ions for 0.01-1 hour. After immersion, the material is washed several times with deionized water, dried, and calcined.

10. The method for preparing a high-performance integrated oxygen evolution reaction electrode material according to claim 9, wherein: The aqueous solution of ruthenium ions is prepared using a ruthenium salt with a salt ion concentration of 19 mol / L; the ruthenium salt is selected from one or more of ruthenium acetate, ruthenium nitrate, and ruthenium chloride; The aqueous solution of iridium ions is prepared using iridium salts with a salt ion concentration of 19 mol / L; the iridium salts are selected from one or more of iridium acetate, iridium nitrate, and iridium chloride.

11. The method for preparing a high-performance integrated oxygen evolution reaction electrode material according to claim 9, wherein: The drying step is performed at a temperature of 50-80° C. for 2-24 hours.

12. The method for preparing a high-performance integrated oxygen evolution reaction electrode material according to claim 9, wherein: The calcination atmosphere is air, the temperature is 150-250° C., and the calcination time is 0.5-3 hours.

13. A high-performance integrated oxygen evolution reaction electrode material, characterized by: The method is as described in any one of claims 1 to 12.

14. The high-performance integrated oxygen evolution reaction electrode material according to claim 13, characterized in that: The electrode material comprises a noble metal element active site, a manganese oxide crystal structure with edge-sharing MnO6 octahedral structural elements, and a corrosion-resistant, high-conductivity three-dimensional electrode material substrate.

15. Application of a high-performance integrated oxygen evolution reaction electrode material, characterized by: The high-performance integrated oxygen evolution reaction electrode material according to claim 13 or 14 is used as the anode material of an acidic aqueous solution electrolysis cell.

Images