A cubic manganese trioxide-loaded lead dioxide electrocatalyst and its preparation method and application

Abstract

The present invention discloses an electrocatalyst of manganese dioxide supported on cubic manganese sesquioxide and its preparation method and application. The preparation method is as follows: A manganese source and glucose are dissolved in deionized water and stirred to form a homogeneous solution. After a high-temperature reaction, a manganese sesquioxide precursor is obtained. The precursor is calcined to obtain cubic manganese sesquioxide. A lead source is added, and sodium hypochlorite solution is added dropwise with stirring to oxidize Pb<supgt;2+< / supgt; to Pb<supgt;4+< / supgt>. The final product is washed and dried to obtain the electrocatalyst of manganese dioxide supported on cubic manganese sesquioxide. Through the synergistic effect between manganese sesquioxide and lead dioxide, electron transfer occurs, promoting the ability of electrolytic water to produce ozone. The process operation method of the present invention is simple, the materials are cheap and easily available, there are no harsh requirements for equipment, the reaction conditions are mild, the process of producing ozone by electrolytic water is clean, green and pollution-free, and the amount of ozone produced is relatively high, having great development potential.

Description

Technical Field

[0001] The invention belongs to the technical field of electrocatalysis, and in particular relates to an electrocatalyst of cubic manganese trioxide loaded with lead dioxide, and a preparation method and application thereof. Background Art

[0002] Ozone (O3) is an allotrope of oxygen with strong oxidizing ability. After oxidation, it generates oxygen, which is safe and environmentally friendly, and has no secondary pollution. Due to its high oxidizing properties and environmental safety, it has become a widely used catalyst. It is widely used in catering disinfection, water pollution treatment, bacterial disinfection, etc. However, since ozone is extremely unstable and not easy to store and transport, it must be prepared on-site for use, so the efficient preparation of ozone is particularly important.

[0003] At present, the main methods for preparing ozone are ultraviolet method, silent discharge method, electrolysis method and so on. Among them, the ultraviolet method mainly uses ultraviolet rays to irradiate dry oxygen to convert it into ozone. This method does not produce other nitrogen oxide pollutants and does not require complex and expensive equipment. However, this method is not suitable for producing a large amount of ozone and is only suitable for small-scale and low-concentration applications. The silent discharge method refers to the decomposition of oxygen into oxygen atoms when it passes through the discharge zone, and then combines into three-atom ozone. However, this method will produce other nitrogen oxides that are harmful to the environment and human body while producing ozone. The electrolysis method for preparing ozone can not only produce a large amount of ozone, but also does not produce by-products that are harmful to the environment and human body. The equipment is small and simple and the price is low.

[0004] By comparing the above three mainstream methods of preparing ozone, it is found that the electrolytic method is the most suitable method for preparing ozone because of its simple equipment, high ozone output and no by-products. In recent years, the most effective catalysts for preparing ozone by electrolysis are lead dioxide, platinum, etc., but lead dioxide is extremely harmful to the environment and human body, and platinum is expensive, which is not conducive to large-scale use. Summary of the invention

[0005] In view of the above problems existing in the current technology, the purpose of the present invention is to provide a cubic manganese trioxide-loaded lead dioxide electrocatalyst and a preparation method and application thereof.

[0006] In order to achieve the above objectives, the following technical solutions are proposed:

[0007] A method for preparing a cubic manganese trioxide-loaded lead dioxide electrocatalyst comprises the following steps:

[0008] 1) Add manganese source and glucose into the reactor, and add deionized water to dissolve all the solids;

[0009] 2) The solution obtained in step 1) is dispersed evenly by ultrasonic treatment, placed in a high temperature reactor at 120°C-180°C for 6-12 hours, cooled and filtered after heat treatment to obtain solid powder, which is then washed and dried;

[0010] 3) placing the solid powder dried in step 2) in a muffle furnace and reacting at 300° C.-800° C. for 1-3 h to obtain a cubic manganese trioxide catalyst;

[0011] 4) Add the cubic manganese trioxide obtained in step 3) to a lead source, add an appropriate amount of deionized water to dissolve, and adjust the pH to 14 with 0.1 M-1 M NaOH;

[0012] 5) Add NaClO solution dropwise to the product obtained in step 4) while stirring, place it in an oven and heat it to 100-180°C for reaction for 4-8 hours, filter and collect, wash with anhydrous ethanol and deionized water for 3-5 times respectively, and vacuum dry at 80°C for 10-24 hours to obtain a cubic manganese trioxide-loaded lead dioxide electrocatalyst.

[0013] Furthermore, the manganese source in step 1) is one or more of potassium permanganate, potassium manganate, manganese acetate, and manganese sulfate.

[0014] Furthermore, in step 4), the mass ratio of the manganese source to the lead source is 1:0.5-2, preferably 1:1.

[0015] Furthermore, the lead source added in step 4) is one or more of lead nitrate, lead acetate trihydrate, and lead sulfate.

[0016] Furthermore, in step 5), the mass content of available chlorine element in the NaClO solution used is 4%-12%.

[0017] A cubic manganese trioxide-loaded lead dioxide electrocatalyst prepared by the preparation method.

[0018] The invention discloses an application of a cubic manganese trioxide-loaded lead dioxide electrocatalyst in the electrocatalytic decomposition of water to produce ozone.

[0019] Furthermore, the voltage and current are controlled by a constant current meter, an H-type electrolytic cell is used for the reaction, water and gas are kept unobstructed between the two electrode chambers, a saturated potassium sulfate aqueous solution is used as the electrolyte, a cubic manganese trioxide-loaded lead dioxide catalyst is coated on a carbon cloth as the working electrode in the anode chamber, a platinum sheet is used as the counter electrode in the cathode chamber, the reaction current is 100-400 mA, the cell voltage is between 1-10 V, and an electrocatalytic ozone production reaction is performed to obtain ozone, preferably the reaction current is 200-300 mA, and the cell voltage is 3-5 V.

[0020] By adopting the above technology, compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] 1) The present invention obtains the carrier by simple hydrothermal and calcination, and then realizes the loading of lead dioxide by hydrothermal method, which is simple;

[0022] 2) The electrocatalyst of manganese trioxide loaded with lead dioxide of the present invention has the characteristics of high current efficiency and low cost. In the preparation process of the manganese trioxide loaded with lead dioxide catalyst, the inorganic acid and the appropriate reaction temperature make the manganese trioxide have a specific cubic morphology, and the appropriate proportion of the lead source makes the manganese trioxide loaded with lead dioxide improve the current efficiency to the greatest extent;

[0023] 3) Compared with the traditional commercial lead dioxide catalyst which has the problems of short life and easy generation of toxic substances, the catalyst prepared by the present invention is used for the preparation of ozone by electrolysis of water and has the advantages of high electrocatalytic activity, long life and good stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a scanning electron microscope observation image of cubic manganese trioxide prepared in Example 1 at 5 μm;

[0025] Figure 2 This is a scanning electron microscope observation image of cubic manganese trioxide loaded with lead dioxide prepared in Example 1 at 5 μm;

[0026] Figure 3 This is a scanning electron microscope observation image of cubic manganese trioxide loaded with lead dioxide prepared in Example 2 at 5 μm;

[0027] Figure 4 This is a scanning electron microscope observation image of cubic manganese trioxide loaded with lead dioxide prepared in Example 3 at 5 μm;

[0028] Figure 5 This is a scanning electron microscope observation image of cubic manganese trioxide loaded with lead dioxide prepared in Example 4 at 5 μm;

[0029] Figure 6 Schematic diagram of the concentration of cubic manganese trioxide loaded with lead dioxide prepared in Example 1-5 for electrolysis of water to produce ozone when the reaction was carried out for 150 minutes. Specific implementation methods

[0030] The present invention is further described below in conjunction with specific embodiments, but the protection scope of the present invention is not limited thereto.

[0031] Example 1 A cubic manganese trioxide-loaded lead dioxide electrocatalyst is prepared, comprising the following steps:

[0032] 1) Dissolve 0.3 mol potassium permanganate and 0.3 mol glucose in 30 mL deionized water in a 50 mL round-bottom flask and sonicate for 30 min to dissolve them completely;

[0033] 2) transferring the solution obtained in step 1) into a polytetrafluoroethylene tank, subjecting it to hydrothermal treatment at 150°C for 8 h, and then naturally cooling it to room temperature;

[0034] 3) filtering the solution obtained in step 2), and washing the solid powder obtained by filtration with deionized water and anhydrous ethanol three times each;

[0035] 4) collecting the product obtained in step 3), placing it in a vacuum drying oven at 80°C for 12 h, then placing the obtained product in a porcelain boat, heating it to 400°C in a muffle furnace at a rate of 3°C / min and maintaining it for 3 h, and then naturally cooling it to room temperature to obtain cubic manganese trioxide;

[0036] 5) Weigh 100 mg of cubic manganese trioxide obtained in step 4), add 0.5 mmol of lead acetate trihydrate, add appropriate amount of deionized water to dissolve, add 1 M sodium hydroxide solution dropwise, adjust the pH to 14, and stir for 30 min;

[0037] 6) The product obtained in step 5) was added to 4 mL of NaClO (effective chlorine concentration 12%) solution, stirred for 10 min, then transferred to a polytetrafluoroethylene tank, placed in an oven at 100°C for reaction for 4 h, filtered and collected, washed with anhydrous ethanol and deionized water for 3 times, and vacuum dried at 80°C for 12 h to obtain the cubic manganese trioxide-loaded lead dioxide electrocatalyst.

[0038] Figure 1 As shown, this is a scanning electron microscope observation image of cubic manganese trioxide at 5 μm. It can be seen that the preparation of the cubic configuration has been basically achieved, and the size of the catalyst is about 3 μm, and the size and shape are relatively uniform.

[0039] Figure 2 As shown, a scanning electron microscope observation image of the prepared cubic manganese trioxide-loaded lead dioxide electrocatalyst is shown at 5 μm, and small particles loaded on the cubic structure can be seen.

[0040] The cubic manganese trioxide supported lead dioxide catalyst of Example 1 is used for the electrolysis of water to produce ozone reaction:

[0041] 8 mg of the cubic manganese trioxide-loaded lead dioxide electrocatalyst particles prepared in Example 1 were weighed and mixed with 900 μL of anhydrous ethanol and 100 μL of Nafion solution (the mass concentration of the Nafion solution was 5%), and ultrasonicated for 0.5 h to completely disperse the catalyst in the mixture of ethanol and Nafion solution to obtain a uniform catalyst solution. The carbon cloth was cut into a size of about 2 cm×2 cm, and the dispersed catalyst slurry was evenly dripped on the carbon cloth. After drying, it was used as a working electrode (i.e., the cubic manganese trioxide-loaded lead dioxide catalyst was coated on the carbon cloth as a working electrode).

[0042] The voltage and current are controlled by a constant current meter, and an H-type electrolytic cell is used for the reaction. In the anode chamber, a cubic manganese trioxide-loaded lead dioxide electrocatalyst is coated on a carbon cloth as a working electrode; in the cathode chamber, a platinum sheet is used as a counter electrode, and the electrolyte is a saturated potassium sulfate aqueous solution. An ozone detector is connected to one end of the H-type electrolytic cell to detect the generation of ozone in real time. During the electrocatalytic ozone production reaction, the current is controlled at 200 mA, the cell voltage is controlled between 3-5 V, and the reaction time is 150 minutes. As the reaction proceeds, the detection diagram of the ozone concentration produced by the electrocatalytic reaction is as shown in the figure Figure 6 As shown. Figure 6 It can be seen from the above that after 150 minutes, the ozone concentration can reach 4400 ppb.

[0043] In order to verify the catalytic stability of the cubic manganese trioxide loaded lead dioxide electrocatalyst prepared in Example 1, the anode chamber working electrode after the above reaction was placed for 24 hours, and then the electrocatalytic preparation of ozone reaction experiment was repeated (the anode chamber working electrode was placed for one day after each use, and then used again). In the first experiment of the anode chamber working electrode reuse reaction, the ozone concentration after the reaction reached 150 min can reach 4400 ppb. In the second experiment of the anode chamber working electrode reuse reaction, the ozone concentration after the reaction reached 100 min can reach 4200 ppb. In the third experiment of the anode chamber working electrode reuse reaction, the ozone concentration after the reaction reached 100 min can reach 4300 ppb. It can be seen that during the reuse of the anode chamber working electrode, the electrocatalytic effect is basically not weakened, indicating that the cubic manganese trioxide loaded lead dioxide electrocatalyst prepared in Example 1 has good stability.

[0044] Example 2 Preparation of a cubic manganese trioxide-loaded lead dioxide electrocatalyst comprises the following steps:

[0045] 1) Dissolve 0.3 mol potassium manganate and 0.3 mol glucose in 30 mL deionized water in a 50 mL round-bottom flask and sonicate for 30 min to dissolve them completely;

[0046] 2) transferring the solution obtained in step 1) into a polytetrafluoroethylene tank, subjecting it to hydrothermal treatment at 180°C for 12 h, and then naturally cooling it to room temperature;

[0047] 3) filtering the solution obtained in step 2), and washing the solid powder obtained by filtration with deionized water and anhydrous ethanol three times each;

[0048] 4) collecting the product obtained in step 3), placing it in a vacuum drying oven at 80°C for 24 h, then placing the obtained product in a porcelain boat, heating it to 800°C in a muffle furnace at a rate of 5°C / min and maintaining it for 2 h, and then naturally cooling it to room temperature to obtain cubic manganese trioxide;

[0049] 5) Weigh 100 mg of cubic manganese trioxide obtained in step 4), add 0.25 mmol of lead nitrate, add appropriate amount of deionized water to dissolve, add 1 M sodium hydroxide solution dropwise, adjust the pH to 14, and stir for 30 min;

[0050] 6) The product obtained in step 5) was added to 6 mL of NaClO (effective chlorine concentration 4%) solution, stirred for 10 min, then transferred to a polytetrafluoroethylene tank, placed in an oven at 120°C for reaction for 6 h, filtered and collected, washed with anhydrous ethanol and deionized water for 3 times, and vacuum dried at 80°C for 12 h to obtain the cubic manganese trioxide-loaded lead dioxide electrocatalyst.

[0051] Figure 3 The scanning electron microscope observation image of the prepared cubic manganese trioxide-loaded lead dioxide electrocatalyst is shown at 5μm, and small particles loaded on the cubic structure can be seen.

[0052] The cubic manganese trioxide-loaded lead dioxide electrocatalyst of Example 2 is used for the electrolysis of water to prepare ozone reaction: in the process of using the catalyst prepared in Example 2 for the electrode anode preparation, the added catalyst of Example 1 is replaced with an equal mass of the catalyst prepared in Example 2, and the remaining operating conditions are the same as the experimental process of electrolysis of water to prepare ozone in Example 1. The relationship between the concentration of ozone generated by the electrolysis of water catalytic reaction and the reaction time is that after 150 min, the concentration of gaseous ozone generated reaches 2000 ppb.

[0053] Example 3 Preparation of a cubic manganese trioxide-loaded lead dioxide electrocatalyst comprises the following steps:

[0054] 1) Dissolve 0.3 mol manganese acetate and 0.3 mol glucose in 30 mL deionized water in a 50 mL round-bottom flask and sonicate for 30 min to dissolve them completely;

[0055] 2) transferring the solution obtained in step 1) into a polytetrafluoroethylene tank, subjecting it to hydrothermal treatment at 180°C for 10 h, and then naturally cooling it to room temperature;

[0056] 3) filtering the solution obtained in step 2), and washing the solid powder obtained by filtration with deionized water and anhydrous ethanol three times each;

[0057] 4) collecting the product obtained in step 3), placing it in a vacuum drying oven at 80°C for 12 h, then placing the obtained product in a porcelain boat, heating it to 500°C in a muffle furnace at a rate of 4°C / min and maintaining it for 3 h, and then naturally cooling it to room temperature to obtain cubic manganese trioxide;

[0058] 5) Weigh 100 mg of cubic manganese trioxide obtained in step 4), add 0.75 mmol of lead sulfate, add appropriate amount of deionized water to dissolve, add 1 M sodium hydroxide solution dropwise, adjust the pH to 14, and stir for 30 min;

[0059] 6) The product obtained in step 5) was added to 6 mL of NaClO (effective chlorine concentration is 12%) solution, stirred for 10 min, then transferred to a polytetrafluoroethylene tank, placed in an oven at 120°C for reaction for 8 h, filtered and collected, washed with anhydrous ethanol and deionized water for 3 times, and vacuum dried at 80°C for 12 h to obtain the cubic manganese trioxide-loaded lead dioxide electrocatalyst.

[0060] Figure 4 The scanning electron microscope observation image of the prepared cubic manganese trioxide supported lead dioxide catalyst is shown at 5μm, and small particles loaded on the cubic structure can be seen.

[0061] The cubic manganese trioxide-loaded lead dioxide catalyst of Example 3 is used for the electrolysis of water to prepare ozone reaction: in the process of using the catalyst prepared in Example 3 for the electrode anode preparation, the added catalyst of Example 1 is replaced with the catalyst prepared in Example 3 of equal mass, and the other operating conditions are the same as the experimental process of electrolysis of water to prepare ozone in Example 1. The concentration of ozone generated by the electrolysis of water catalytic reaction changes with the reaction time. After 150 min, the concentration of gaseous ozone generated reaches 2500 ppb.

[0062] Example 4 Preparation of a cubic manganese trioxide-loaded lead dioxide electrocatalyst comprises the following steps:

[0063] 1) Dissolve 0.3 mol manganese sulfate and 0.3 mol glucose in 30 mL deionized water in a 50 mL round-bottom flask and sonicate for 30 min to dissolve them completely;

[0064] 2) transferring the solution obtained in step 1) into a polytetrafluoroethylene tank, subjecting it to hydrothermal treatment at 140°C for 10 h, and then naturally cooling it to room temperature;

[0065] 3) filtering the solution obtained in step 2), and washing the solid powder obtained by filtration with deionized water and anhydrous ethanol three times each;

[0066] 4) collecting the product obtained in step 3), placing it in a vacuum drying oven at 80°C for 18 h, then placing the obtained product in a porcelain boat, heating it to 500°C in a muffle furnace at a rate of 5°C / min and maintaining it for 1 h, and then naturally cooling it to room temperature to obtain cubic manganese trioxide;

[0067] 5) Weigh 100 mg of cubic manganese trioxide obtained in step 4), add 1 mmol of lead sulfate, add appropriate amount of deionized water to dissolve, add dropwise 0.1 M sodium hydroxide solution, adjust the pH to 14, and stir for 30 min;

[0068] 6) The product obtained in step 5) was added to 8 mL of NaClO (effective chlorine concentration 12%) solution, stirred for 10 min, then transferred to a polytetrafluoroethylene tank, placed in an oven at 140°C for reaction for 4 h, filtered and collected, washed with anhydrous ethanol and deionized water for 3 times, and vacuum dried at 80°C for 12 h to obtain the cubic manganese trioxide-loaded lead dioxide electrocatalyst.

[0069] Figure 5 The scanning electron microscope observation image of the prepared cubic manganese trioxide supported lead dioxide catalyst is shown at 5μm, and small particles loaded on the cubic structure can be seen.

[0070] The cubic manganese trioxide-loaded lead dioxide electrocatalyst of Example 4 is used for the electrolysis of water to prepare ozone reaction: in the process of using the catalyst prepared in Example 4 for the electrode anode preparation, the added catalyst of Example 1 is replaced with an equal mass of the catalyst prepared in Example 4, and the other operating conditions are the same as the experimental process of electrolysis of water to prepare ozone in Example 1. The relationship between the concentration of ozone generated by the electrolysis of water catalytic reaction and the reaction time is that after 150 min, the concentration of gaseous ozone generated reaches 2000 ppb.

[0071] Example 5 Preparation of a cubic manganese trioxide-loaded lead dioxide electrocatalyst comprises the following steps:

[0072] 1) In a 50 mL round-bottom flask, dissolve 0.3 mol potassium permanganate, lead manganate (potassium permanganate: lead manganate = 1:1) and 0.3 mol glucose in 30 mL deionized water and sonicate for 30 min to dissolve them completely;

[0073] 2) transferring the solution obtained in step 1) into a polytetrafluoroethylene tank, subjecting it to hydrothermal treatment at 160°C for 6 h, and then naturally cooling it to room temperature;

[0074] 3) filtering the solution obtained in step 2), and washing the solid powder obtained by filtration with deionized water and anhydrous ethanol three times each;

[0075] 4) collecting the product obtained in step 3), placing it in a vacuum drying oven at 80°C for 12 h, then placing the obtained product in a porcelain boat, heating it to 400°C in a muffle furnace at a rate of 3°C / min and maintaining it for 3 h, and then naturally cooling it to room temperature to obtain cubic manganese trioxide;

[0076] 5) Weigh 100 mg of cubic manganese trioxide obtained in step 4), add 0.5 mmol of lead nitrate, add appropriate amount of deionized water to dissolve, add dropwise 0.5 M sodium hydroxide solution, adjust the pH to 14, and stir for 30 min;

[0077] 6) Add 2 mL of NaClO (effective chlorine concentration 12%) solution to the product obtained in step 5), stir for 10 min, transfer to a polytetrafluoroethylene tank, place in an oven at 120°C for reaction for 8 h, wash with anhydrous ethanol and deionized water three times, and vacuum dry at 80°C for 12 h to obtain the cubic manganese trioxide-supported lead dioxide catalyst.

[0078] The cubic manganese trioxide-loaded lead dioxide catalyst of Example 5 is used for the electrolysis of water to prepare ozone reaction: in the process of using the catalyst prepared in Example 5 for the electrode anode preparation, the added catalyst of Example 1 is replaced with the catalyst prepared in Example 5 of equal mass, and the other operating conditions are the same as the experimental process of electrolysis of water to prepare ozone in Example 1. The relationship between the concentration of ozone generated by the electrolysis of water catalytic reaction and the reaction time is that after 150 min, the concentration of gaseous ozone generated reaches 1300 ppb.

[0079] The gaseous ozone concentration test of different loading catalysts was conducted, and each catalyst was tested 5-6 times, and the experimental results were reliable. The ozone concentration was high when the mass ratio of Mn2O3 to PbO2 was 1:1, because of the synergistic effect between the two, and the lead dioxide coating was the best at this time, which made it have excellent ozone production performance.

[0080] The above description is only part of the embodiments of the present invention and is not intended to limit the present invention. All equivalent changes and modifications made according to the content of the present invention are within the protection scope of the present invention.

Claims

1. A method for preparing a cubic manganese trioxide-loaded lead dioxide electrocatalyst, characterized in that The following steps are involved: 1) Add manganese source and glucose into the reactor, and add deionized water to dissolve all the solids; 2) The solution obtained in step 1) is dispersed evenly by ultrasonic treatment, placed in a high temperature reactor at 120°C-180°C for 6-12 hours, cooled and filtered after heat treatment to obtain solid powder, which is then washed and dried; 3) placing the solid powder dried in step 2) in a muffle furnace and reacting at 300° C.-800° C. for 1-3 h to obtain a cubic manganese trioxide catalyst; 4) Add the cubic manganese trioxide obtained in step 3) to a lead source, add an appropriate amount of deionized water to dissolve, and adjust the pH to 14 with 0.1M-1M NaOH; 5) Add NaClO solution dropwise to the product obtained in step 4) while stirring, place it in an oven and heat it to 100-180°C for reaction for 4-8 hours, filter and collect, wash with anhydrous ethanol and deionized water for 3-5 times respectively, and vacuum dry at 80°C for 10-24 hours to obtain a cubic manganese trioxide-loaded lead dioxide electrocatalyst.

2. The preparation method according to claim 1, characterized in that The manganese source in step 1) is one or more of potassium permanganate, potassium manganate, manganese acetate and manganese sulfate.

3. The preparation method according to claim 1, characterized in that The mass ratio of the manganese source to the lead source in step 4) is 1:0.5-2.

4. The preparation method according to claim 1, characterized in that The lead source added in step 4) is one or more of lead nitrate, lead acetate trihydrate, and lead sulfate.

5. The preparation method according to claim 1, characterized in that In step 5), the mass content of available chlorine element in the NaClO solution used is 4%-12%.

6. An electrocatalyst of cubic manganese trioxide loaded with lead dioxide prepared by the preparation method of claim 1.

7. Use of the cubic manganese trioxide-loaded lead dioxide electrocatalyst according to claim 6 in the electrocatalytic decomposition of water to produce ozone.

8. The use according to claim 7, characterized in that The voltage and current are controlled by a constant current meter, and an H-type electrolytic cell is used for the reaction. Water and gas are kept unobstructed between the two electrode chambers. A saturated potassium sulfate aqueous solution is used as the electrolyte. A cubic manganese trioxide-loaded lead dioxide catalyst is coated on a carbon cloth as the working electrode in the anode chamber, and a platinum sheet is used as the counter electrode in the cathode chamber. The reaction current is 100-400 mA, and the cell voltage is between 1-10 V. An electrocatalytic ozone production reaction is performed to obtain ozone.

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