Oxygen evolution electrode material, preparation method of oxygen evolution electrode material, electrolysis device and electrode of electrolysis device
By using composite materials of metal nickel, iron, cobalt, chromium and sulfur based on nickel foam, the oxygen evolution electrode material was prepared in one step by using the molten salt method, which solved the problems of complicated preparation process and low catalytic activity of oxygen evolution electrode material in the prior art, and achieved an efficient and stable electrolysis process.
Patent Information
- Application Number
- CN202311828112.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-26
- Publication Date
- 2025-06-27
AI Technical Summary
The preparation process of existing oxygen evolution electrode materials is cumbersome and has low catalytic activity, resulting in high electrolytic energy consumption.
The composite materials of metal nickel, metal iron, metal cobalt, metal chromium and sulfur elements based on nickel foam are prepared in one step by the molten salt method to improve the mechanical strength and electrocatalytic activity of the material.
It significantly improves the catalytic activity and stability of oxygen evolution electrode materials, reduces electrolytic energy consumption, and simplifies the preparation process, which is suitable for large-scale production.
Smart Images
Figure CN120210852A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of hydrogen production by electrolyzing water, and particularly to an oxygen evolution electrode, a preparation method thereof, an electrolysis device and an electrode thereof. Background Art
[0002] As an important development direction of the energy technology revolution, the development and utilization of hydrogen energy are increasingly recognized globally for their potential and importance, and it is regarded as one of the most promising clean energies in the 21st century. Among the existing many hydrogen production technical means, the low-temperature water electrolysis cell technology is the greenest and most friendly means of hydrogen production, and can be organically combined with renewable intermittent power sources (such as wind energy and solar energy) to achieve energy storage. In the hydrogen production technology by electrolyzing water, the alkaline electrolyzed water technology with high current density and energy conversion efficiency is favored, but its development is restricted by the poor activity and weak stability of the oxygen evolution electrode. Compared with the two-electron hydrogen evolution reaction, the four-electron oxygen evolution reaction has slow kinetics, which puts forward higher requirements for the intrinsic activity of the oxygen evolution catalyst.
[0003] The existing preparation methods of oxygen evolution electrode materials containing sulfides include electrodeposition, high-temperature sulfidation and hydrothermal method. These preparation methods have the disadvantages of poor product uniformity, resulting in poor catalytic activity and stability of the materials, or the generation of toxic gases during the preparation process, or long preparation time. Moreover, the materials in the oxygen evolution electrodes prepared by the above methods have low catalytic activity and high electrolysis energy consumption, showing a high overpotential.
[0004] Based on this, the oxygen evolution electrode materials in the prior art have technical problems such as cumbersome preparation processes or low catalytic activity, resulting in high electrolysis energy consumption, and it is necessary to provide an oxygen evolution electrode material and a preparation method thereof to improve the above problems. Summary of the Invention
[0005] The main purpose of the present invention is to provide an oxygen evolution electrode material, a preparation method thereof, an electrolysis device and an electrode thereof, so as to solve the technical problems that the oxygen evolution electrode materials in the prior art have cumbersome preparation processes or low catalytic activity, resulting in high electrolysis energy consumption.
[0006] To achieve the above purpose, according to one aspect of the present invention, an oxygen evolution electrode material is provided. The oxygen evolution electrode material includes a composite material of metallic nickel, metallic iron, metallic cobalt, metallic chromium and sulfur element with nickel foam as the substrate, and its structural formula is NiFeCoCrS / NF. Among them, the mass ratio of metallic nickel, metallic iron, metallic cobalt and metallic chromium to sulfur element is (0.05 - 0.5):(0.01 - 0.4):(0.05 - 0.5):(0.01 - 0.4):1.
[0007] Further, the morphology of the oxygen evolution electrode material is granular, and its particle size D50 is 50 to 100 nm.
[0008] Further, the oxygen evolution electrode material is a high-entropy material; preferably, the mass ratio of metallic nickel, metallic iron, metallic cobalt, metallic chromium to sulfur element is (0.05 to 0.4):(0.03 to 0.3):(0.05 to 0.4):(0.03 to 0.3):1.
[0009] To achieve the above object, according to one aspect of the present invention, there is provided a preparation method of an oxygen evolution electrode material, the preparation method comprising: taking pretreated nickel foam and dispersing it in a mixture containing potassium thiocyanate, iron salt, cobalt salt, chromium salt and nickel salt, and then roasting to obtain the oxygen evolution electrode material.
[0010] Further, by weight percentage, the weight ratio of potassium thiocyanate, iron salt, cobalt salt, chromium salt to nickel salt is 1:(0.1 to 1):(0.1 to 1):(0.1 to 1):(0.1 to 1).
[0011] Further, by weight percentage, the weight ratio of potassium thiocyanate, iron salt, cobalt salt, chromium salt to nickel salt is 1:(0.1 to 0.5):(0.1 to 0.5):(0.1 to 0.5):(0.1 to 0.5).
[0012] Further, the iron salt is selected from one or more of ferric chloride, ferric nitrate or ferric sulfate.
[0013] Further, the cobalt salt is selected from one or more of cobalt nitrate, cobalt chloride or cobalt sulfate.
[0014] Further, the chromium salt is selected from one or more of chromium sulfate, chromium chloride or chromium nitrate.
[0015] Further, the nickel salt is selected from one or more of nickel chloride, nickel nitrate or nickel sulfate.
[0016] Further, the pretreated nickel foam includes: taking nickel foam and washing it successively with acetone, ethanol and ultrapure water to obtain the pretreated nickel foam.
[0017] Further, the mixture is placed in a porcelain boat for roasting treatment.
[0018] Further, the mixture is dispersed in a stirrer, and the stirring speed for the dispersion treatment is 20 to 100 rpm, and the treatment time is 1 to 3 h.
[0019] Further, the roasting is carried out in a muffle furnace, the roasting temperature is 200 to 500 °C, and the roasting time is 1 to 5 h.
[0020] Further, the roasting temperature is 250 to 400 °C
[0021] Further, the nickel salt is nickel nitrate.
[0022] Further, the iron salt is iron nitrate.
[0023] Further, the cobalt salt is cobalt nitrate; preferably, the chromium salt is chromium nitrate.
[0024] According to another aspect of the present invention, an electrode for an electrolysis device is provided, which includes the above oxygen evolution electrode material or an oxygen evolution electrode material obtained by the preparation method of the above oxygen evolution electrode material.
[0025] According to another aspect of the present invention, an electrolysis device is provided, which includes the above electrolysis device electrode.
[0026] Applying the technical solution of the present invention, the oxygen evolution electrode material is prepared by a one-step molten salt method. The electrode active material has a high ion migration rate in a high-temperature liquid molten salt environment, which can further promote the mass transfer and nucleation of the oxygen evolution electrode material, further promote electron transport, enhance the mechanical strength of the material, thereby improving the conductivity and stability of the electrocatalyst. Moreover, this preparation method has simple processes, a simple flow, reduces the preparation cost, is suitable for large-scale production, and has broad industrial application prospects. Description of the Drawings
[0027] The drawings here are incorporated into the specification and form a part of this specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application. In the drawings:
[0028] Figure 1 The SEM image (magnification: 30,000 times) of the oxygen evolution electrode material prepared in Example 1 of the present invention is shown;
[0029] Figure 2 The linear sweep voltammogram of the oxygen evolution electrode materials prepared in Examples 1, 2, and 3 of the present invention is shown; and
[0030] Figure 3 The voltage-time graphs at different current densities of the oxygen evolution electrode materials prepared in Examples 1, 2, and 3 of the present invention are shown. Detailed Embodiments
[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the scope of protection of the present application.
[0032] As described in the background art section of the present invention, the oxygen evolution electrode materials in the prior art have technical problems such as cumbersome preparation processes or low catalytic activities, resulting in high electrolysis energy consumption. Based on this, the present invention provides an oxygen evolution electrode material, which comprises a composite material of metallic nickel, metallic iron, metallic cobalt, metallic chromium and sulfur element with nickel foam as the substrate, and its structural formula is NiFeCoCrS / NF. Among them, the mass ratio of metallic nickel, metallic iron, metallic cobalt and metallic chromium to sulfur element is (0.05 - 0.5):(0.01 - 0.4):(0.05 - 0.5):(0.01 - 0.4):1.
[0033] Based on the complex preparation process and cumbersome flow of the oxygen evolution electrode materials in the prior art, and the low catalytic activity of the prepared oxygen evolution electrode materials, resulting in high energy consumption. Based on this, the present invention uses the molten salt method to prepare the oxygen evolution electrode material in one step, which uses nickel foam as the loaded substrate. It mainly provides a large specific surface area for the generation of the oxygen evolution electrode material based on the three-dimensional porous structure on the surface of nickel foam, and the nickel foam material also has good electrical conductivity, which is beneficial to enhancing the electron conduction effect. The oxygen evolution electrode material comprises a composite material of metallic nickel, metallic iron, metallic cobalt, metallic chromium and sulfur element with nickel foam as the substrate. Among them, the mass ratio of metallic nickel, metallic iron, metallic cobalt and metallic chromium to sulfur element is (0.05 - 0.5):(0.01 - 0.4):(0.05 - 0.5):(0.01 - 0.4):1. The present invention uses the co-doping of metallic nickel, metallic iron, metallic cobalt, metallic chromium and heteroatom sulfur to improve the mechanical strength of the material. In particular, the high-entropy sulfide of the oxygen evolution electrode material prepared by the present invention can significantly improve the ion migration rate and enhance the mechanical strength of the material, thus contributing to the electrical conductivity and stability of the electrocatalyst.
[0034] In a preferred embodiment, the morphology of the oxygen evolution electrode material is granular, and its particle size D50 is 50 - 100 nm to further exert the intrinsic activity and stability of the oxygen evolution electrode in practical applications.
[0035] In a preferred embodiment, the oxygen evolution electrode material is a high-entropy material to further enhance the electrical conductivity and stability of the catalyst. Further preferably, the mass ratio of metallic nickel, metallic iron, metallic cobalt and metallic chromium to sulfur element is (0.05 - 0.4):(0.03 - 0.3):(0.05 - 0.4):(0.03 - 0.3):1.
[0036] On the other hand, the present invention provides a preparation method of an oxygen evolution electrode material, which comprises: taking the pretreated nickel foam, dispersing it in a mixture containing potassium thiocyanate, iron salt, cobalt salt, chromium salt and nickel salt, and then roasting to obtain the oxygen evolution electrode material.
[0037] Those skilled in the art can first place the pretreated nickel foam in a mixture containing potassium thiocyanate, iron salt, cobalt salt, chromium salt and nickel salt for dispersion treatment and then further carry out calcination to obtain an oxygen evolution electrode material. The catalyst in the present invention can significantly reduce the preparation process and save the preparation cost through a one-step molten salt method, and can further improve the intrinsic activity and stability of the electrocatalyst in practical applications. In particular, the active material in the present invention can further increase the ion migration rate in a high-temperature liquid molten salt environment, thereby further promoting the mass transfer and nucleation of the oxygen evolution electrode material, and then synthesizing high-entropy sulfide, which can further promote electron transport and enhance the mechanical strength of the material, thus contributing to the conductivity and stability of the electrocatalyst. Moreover, the preparation method has simple processes, a simple flow, reduces the preparation cost, is suitable for large-scale production, and has broad industrial application prospects.
[0038] In order to further improve the performance of the product in the molten salt, promote the mass transfer and nucleation of the nanomaterial, synthesize high-entropy sulfide, further promote electron transport, enhance the mechanical strength of the material, and improve the conductivity and stability of the electrocatalyst, by weight percentage, the weight ratio of potassium thiocyanate, iron salt, cobalt salt, chromium salt to nickel salt is preferably 1:(0.1-1):(0.1-1):(0.1-1):(0.1-1), and more preferably the weight ratio of potassium thiocyanate, iron salt, cobalt salt, chromium salt to nickel salt is 1:(0.1-0.5):(0.1-0.5):(0.1-0.5):(0.1-0.5).
[0039] In order to further improve the mechanical strength of the catalyst, as well as its conductivity and stability, the iron salt is preferably selected from one or more of ferric chloride, ferric nitrate or ferric sulfate, more preferably ferric nitrate; the cobalt salt is preferably selected from one or more of cobalt nitrate, cobalt chloride or cobalt sulfate, more preferably cobalt nitrate; the chromium salt is preferably selected from one or more of chromium sulfate, chromium chloride or chromium nitrate, more preferably chromium nitrate; the nickel salt is preferably selected from one or more of nickel chloride, nickel nitrate or nickel sulfate, more preferably nickel nitrate.
[0040] In a preferred embodiment, the pretreated nickel foam includes: taking nickel foam and washing it successively with acetone, ethanol and ultrapure water to obtain the pretreated nickel foam, so as to remove the oil on the surface of the nickel foam, clean the oil impurities on the surface of the nickel foam, improve the purity of the oxygen evolution electrode material, and further enhance its structural stability.
[0041] In order to further improve the nanomaterial with uniform components, excellent crystal morphology and high phase purity of the oxygen evolution electrode material in the molten salt, it is preferred that the mixture is placed in a porcelain boat for calcination treatment; in order to make the product more uniform and stable and the components in the molten salt are mixed evenly, it is preferred that the dispersion treatment of the mixture is carried out in a stirrer, the stirring speed of the dispersion is 20-100 rpm, and the treatment time is 1-3 h.
[0042] In a preferred embodiment, the calcination is carried out in a muffle furnace at a calcination temperature of 200-500 °C and a calcination time of 1-5 h to further accelerate the ion migration rate in the high-temperature molten salt environment, promote the mass transfer and nucleation of the nanomaterials, synthesize the high-entropy structure materials, thereby enhancing the mechanical strength of the materials, improving the conductivity and stability. Further preferably, the calcination temperature is 250-400 °C.
[0043] On the other hand, the present invention also provides an electrode for an electrolysis device, which includes the above-mentioned oxygen evolution electrode material, or the oxygen evolution electrode material obtained by the preparation method of the above-mentioned oxygen evolution electrode. As described above, the electrochemical performance of the electrode for the electrolysis device is relatively excellent.
[0044] On the other hand, the present invention also provides an electrolysis device, which includes the above-mentioned electrode for the electrolysis device.
[0045] The following further describes the present application in detail with specific embodiments, and these embodiments should not be construed as limiting the scope claimed in the present application.
[0046] Example 1
[0047] The nickel foam was successively ultrasonically washed in acetone, ethanol and ultrapure water for 20 min to obtain a nickel foam support. Then the nickel foam support was dispersed uniformly with the mixed salts, with a stirring speed of 50 rpm and a stirring time of 2 h, and then placed in a porcelain boat. The above-mentioned mixed salts included: 5 g of potassium thiocyanate (KSCN), 1 g of iron nitrate, 1 g of cobalt nitrate, 1 g of chromium nitrate, and 1 g of nickel nitrate, and were dispersed and stirred evenly, and then placed in a muffle furnace for calcination at 300 °C for 3 h to obtain NiFeCoCrS / NF, and its particle size D50 was 50-80 nm. Among them, the mass ratio of metallic nickel, metallic iron, metallic cobalt and metallic chromium to sulfur element was 0.2:0.14:0.2:0.12:1. The SEM image of the oxygen evolution electrode material is as Figure 1 shown.
[0048] Example 2
[0049] The nickel foam was successively ultrasonically washed in acetone, ethanol and ultrapure water for 20 min to obtain a nickel foam support. Then the nickel foam support was dispersed uniformly with the mixed salts, with a stirring speed of 50 rpm and a stirring time of 2 h, and then placed in a porcelain boat. The above-mentioned mixed salts included: 5 g of KSCN, 0.5 g of iron nitrate, 0.5 g of cobalt nitrate, 0.5 g of chromium nitrate, and 0.5 g of nickel nitrate to obtain NiFeCoCrS / NF, and its particle size D50 was 50-80 nm. Among them, the mass ratio of metallic nickel, metallic iron, metallic cobalt and metallic chromium to sulfur element was 0.1:0.07:0.1:0.06:1.
[0050] Example 3
[0051] The nickel foam was successively ultrasonically washed in acetone, ethanol and ultrapure water for 20 min to obtain a nickel foam support. Then, the nickel foam support was dispersed uniformly with the mixed salts, where the stirring speed was 50 rpm and the stirring time was 2 h. Then, it was placed in a porcelain boat. The above mixed salts included: 5 g of KSCN, 2 g of iron nitrate, 2 g of cobalt nitrate, 2 g of chromium nitrate, and 2 g of nickel nitrate, to obtain NiFeCoCrS / NF, whose particle size D50 was 50 - 80 nm. Among them, the mass ratio of metallic nickel, metallic iron, metallic cobalt and metallic chromium to sulfur element was 0.4:0.28:0.4:0.2:1.
[0052] Comparative Example 1
[0053] The nickel foam was successively ultrasonically washed in acetone, ethanol and ultrapure water for 20 min to obtain a nickel foam support. Then, the nickel foam support was dispersed uniformly with the mixed salts, where the stirring speed was 50 rpm and the stirring time was 2 h. Then, it was placed in a porcelain boat. The above mixed salts included: 2 g of iron nitrate, 2 g of cobalt nitrate, 2 g of chromium nitrate, and 2 g of nickel nitrate, to obtain NiFeCoCr / NF.
[0054] Performance test:
[0055] The oxygen evolution electrode material prepared in the above examples and comparative examples was used to prepare an oxygen evolution electrode as the working electrode, a mercury / mercuric oxide electrode as the reference electrode, and a platinum mesh as the counter electrode. The oxygen evolution overpotential was tested in 1 M potassium hydroxide solution, and the test results are shown in Table 1.
[0056] Table 1
[0057] <![CDATA[Oxygen evolution overpotential (mV / 100 mA·cm -2 )]]> Example 1 306 Example 2 324 Example 3 334 Comparative Example 1 373
[0058] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:
[0059] From the test results of Examples 1, 2, 3 and Comparative Example 1, it can be found that when the oxygen evolution electrode material obtained by the preparation method of the present invention is used, the oxygen evolution electrode material includes a composite material of metallic nickel, metallic iron, metallic cobalt, metallic chromium and sulfur element based on nickel foam. Compared with the oxygen evolution electrode material without doped sulfur element in Comparative Example 1, the oxygen evolution electrode material in the present invention has a lower oxygen evolution overpotential.
[0060] From Figure 2 the linear sweep voltammogram of the oxygen evolution electrode material prepared according to Examples 1, 2 and 3 of the present invention, and Figure 3From the voltage-time graphs of the oxygen evolution electrode materials prepared according to Embodiments 1, 2, and 3 of the present invention at different current densities, it can be found that the oxygen evolution electrode materials prepared by the present invention have high electrocatalytic activity and excellent catalytic performance.
[0061] In summary, in the oxygen evolution electrode preparation method of the present invention, the oxygen evolution electrode material is prepared in one step by the molten salt method. In the high-temperature liquid molten salt environment, the electrode active material can increase the ion migration rate, promote the mass transfer and nucleation of the oxygen evolution electrode material, and then synthesize high-entropy sulfide, which can further promote electron transport and enhance the mechanical strength of the material, thus contributing to the conductivity and stability of the electrocatalyst. Moreover, this preparation method has simple processes, a simple flow, reduces the preparation cost, is suitable for large-scale production, and has broad industrial application prospects.
[0062] Although this specification contains many specific implementation details, these should not be construed as limiting the scope of any invention or the scope of what is claimed, but are mainly used to describe the features of specific embodiments of a particular invention. Certain features described in multiple embodiments in this specification can also be implemented in combination in a single embodiment. On the other hand, various features described in a single embodiment can also be implemented separately in multiple embodiments or in any suitable sub-combination. In addition, although features may function in certain combinations as described above and are even initially claimed as such, one or more features from the claimed combination can in some cases be removed from the combination, and the claimed combination can be directed to a sub-combination or a variant of the sub-combination.
[0063] Similarly, although operations are depicted in the drawings in a particular order, this should not be construed as requiring that the operations be performed in the particular order shown or sequentially, or that all illustrated operations be performed to achieve the desired result. In some cases, multitasking and parallel processing may be advantageous. In addition, the separation of various system modules and components in the above embodiments should not be construed as required in all embodiments, and it should be understood that the described program components and systems can generally be integrated together in a single software product or packaged into multiple software products.
[0064] Thus, specific embodiments of the subject matter have been described. Other embodiments are within the scope of the appended claims. In some cases, the acts recited in the claims can be performed in a different order and still achieve the desired result. In addition, the processes depicted in the drawings are not necessarily in the specific order or sequential order shown to achieve the desired result. In some implementations, multitasking and parallel processing may be advantageous.
[0065] It should be noted that in this text, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising said element.
[0066] The above are only specific embodiments of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features claimed herein.
Claims
1. An oxygen evolution electrode material, characterized in that, The oxygen evolution electrode material includes a composite material of metallic nickel, metallic iron, metallic cobalt, metallic chromium, and sulfur element based on nickel foam, and its structural formula is NiFeCoCrS / NF. Among them, the mass ratio of the metallic nickel, the metallic iron, the metallic cobalt, and the metallic chromium to the sulfur element is (0.05 - 0.5):(0.01 - 0.4):(0.05 - 0.5):(0.01 - 0.4):
1.
2. The oxygen evolution electrode material according to claim 1, characterized in that, The morphology of the oxygen evolution electrode material is granular, and its particle size D50 is 50 - 100 nm.
3. The oxygen evolution electrode material according to claim 1 or 2, characterized in that, The oxygen evolution electrode material is a high-entropy material; and / or The mass ratio of the metallic nickel, the metallic iron, the metallic cobalt, and the metallic chromium to the sulfur element is (0.05 - 0.4):(0.03 - 0.3):(0.05 - 0.4):(0.03 - 0.3):
1.
4. A method for preparing the oxygen evolution electrode material according to any one of claims 1 to 3, characterized in that, The preparation method includes: Taking the pretreated nickel foam and dispersing it in a mixture containing potassium thiocyanate, iron salt, cobalt salt, chromium salt, and nickel salt, and then roasting to obtain the oxygen evolution electrode material.
5. The preparation method of the oxygen evolution electrode material according to claim 4, characterized in that, By weight percentage, the weight ratio of the potassium thiocyanate, the iron salt, the cobalt salt, the chromium salt, and the nickel salt is 1:(0.1 - 1):(0.1 - 1):(0.1 - 1):(0.1 - 1).
6. The preparation method of the oxygen evolution electrode material according to claim 4 or 5, characterized in that, By weight percentage, the weight ratio of the potassium thiocyanate, the iron salt, the cobalt salt, the chromium salt, and the nickel salt is 1:(0.1 - 0.5):(0.1 - 0.5):(0.1 - 0.5):(0.1 - 0.5).
7. The preparation method of the oxygen evolution electrode material according to any one of claims 4 to 6, characterized in that The iron salt is selected from one or more of ferric chloride, ferric nitrate, or ferric sulfate.
8. The preparation method of the oxygen evolution electrode material according to any one of claims 4 to 7, characterized in that The cobalt salt is selected from one or more of cobalt nitrate, cobalt chloride, or cobalt sulfate.
9. The preparation method of the oxygen evolution electrode material according to any one of claims 4 to 8, characterized in that, The chromium salt is selected from one or more of chromium sulfate, chromium chloride, or chromium nitrate.
10. The preparation method of the oxygen evolution electrode material according to any one of claims 4 to 9, characterized in that, The nickel salt is selected from one or more of nickel chloride, nickel nitrate, or nickel sulfate.
11. The preparation method of the oxygen evolution electrode material according to any one of claims 4 to 10, characterized in that, The pretreated nickel foam includes: taking nickel foam and washing it successively in acetone, ethanol, and ultrapure water to obtain the pretreated nickel foam.
12. The preparation method of the oxygen evolution electrode material according to any one of claims 4 to 11, characterized in that, The mixture is placed in a porcelain boat for the roasting treatment.
13. The preparation method of the oxygen evolution electrode material according to any one of claims 4 to 12, characterized in that The mixture is subjected to the dispersion treatment in a stirrer, and the stirring speed of the dispersion treatment is 20 - 100 rpm, and the treatment time is 1 - 3 h.
14. The preparation method of the oxygen evolution electrode material according to any one of claims 4 to 13, characterized in that, The roasting is carried out in a muffle furnace, the roasting temperature is 200 - 500 °C, and the roasting time is 1 - 5 h.
15. The preparation method of the oxygen evolution electrode material according to any one of claims 4 to 14, characterized in that, The roasting temperature is 250 - 400 °C.
16. The preparation method of the oxygen evolution electrode material according to any one of claims 4 to 15, characterized in that, The nickel salt is nickel nitrate.
17. The preparation method of the oxygen evolution electrode material according to any one of claims 4 to 16, characterized in that, The iron salt is ferric nitrate.
18. The preparation method of the oxygen evolution electrode material according to any one of claims 4 to 17, characterized in that, The cobalt salt is cobalt nitrate; and / or The chromium salt is chromium nitrate.
19. An electrode of an electrolysis device, characterized in that, The electrode of the electrolysis device includes the oxygen evolution electrode material according to any one of claims 1 to 3, or the oxygen evolution electrode material obtained by the preparation method of the oxygen evolution electrode material according to any one of claims 4 to 18.
20. An electrolysis device, characterized in that, The electrolysis device includes the electrode of the electrolysis device according to claim 19.