CN112663082A - Hydrophobic carbon-based gas diffusion electrode and preparation method and application thereof - Google Patents
Hydrophobic carbon-based gas diffusion electrode and preparation method and application thereof Download PDFInfo
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Abstract
The application discloses a hydrophobic carbon-based gas diffusion electrode and a preparation method and application thereof. A gas diffusion electrode comprising a current collector, a diffusion layer and a catalytic layer; the diffusion layer and the catalytic layer are respectively positioned on two sides of the sheet-shaped current collector, and the components of the diffusion layer and the catalytic layer all comprise carbon materials. The electrode is a high-efficiency electroreduction hydrogen peroxide gas diffusion electrode, and the electrode can be applied to an electrocatalysis process, so that hydrogen peroxide can be efficiently prepared, and organic matters in water can be rapidly degraded in cooperation with an anode.
Description
Technical Field
The application relates to a hydrophobic carbon-based gas diffusion electrode and a preparation method and application thereof, belonging to the technical field of electrochemistry.
Background
Advanced oxidation technologies can mineralize organic matter into water and carbon dioxide, and thus are widely used in the sewage treatment industry. Among them, the electrocatalytic oxidation technology (EO) has the advantages of simple operation, no secondary pollution, no reagent addition and the like, and is a water treatment technology with a good application prospect. The electrode material is the core of EO, more recently, a numberResearchers have focused on the research of cathode materials, Huijia Yang et al (Huijia Yang, Minghua Zhou, Weilu Yang, et al, Rolling-large gas diffusion electrode with carbon nanotube for electro-deposition of acetylsalicylic acid. Chemosphere. 206 (2018) 439 446) prepared a gas diffusion electrode with carbon nanotubes as an active component by a pressing method for the efficient removal of aspirin from water with a removal rate of 100% conversion at 10 min. Yi Xu et al (Yi Xu, Limei Cao, Wei Sun, et al, In-situ catalysis of Hg0via a gas diffusion electrode, Chemical Engineering journal.310 (2017) 170-. Therefore, the gas diffusion electrode has wider application prospect in the fields of hydrogen peroxide preparation and pollutant treatment.
However, the gas diffusion electrode has the disadvantages of high cost, low hydrogen peroxide yield, and complicated and harsh preparation process of the electrode.
Disclosure of Invention
According to an aspect of the application, a hydrophobic gas diffusion electrode is provided, the electrode is a hydrogen peroxide gas diffusion electrode prepared by electroreduction of oxygen, the electrode is applied to an electrocatalysis process, hydrogen peroxide can be efficiently prepared, and organic matters in water can be rapidly degraded by the aid of the electrode.
A hydrophobic carbon-based gas diffusion electrode comprising a current collector, a diffusion layer and a catalytic layer;
the current collector, the diffusion layer and the catalyst layer are positioned in the middle and at two sides in a sandwich-shaped manner;
the diffusion layer and the catalytic layer are mainly made of carbon materials and have a porous structure.
Optionally, the current collector is a metal material;
the diffusion layer and the catalyst layer comprise carbon and a binder;
optionally, the metal material comprises any one of titanium, iron, nickel, copper, stainless steel;
the carbon comprises at least one of carbon nano tube, acetylene black, graphite powder and activated carbon powder;
the binder comprises at least one of polypropylene, polyvinylidene fluoride, polytetrafluoroethylene, polybutylene and polyvinyl chloride.
According to another aspect of the present application, there is also provided a method of preparing a hydrophobic carbon-based gas diffusion electrode, the method comprising:
s100, uniformly mixing the carbon, the binder, the pore-forming agent and the dispersing agent to form a diffusion layer precursor;
s200, uniformly mixing the carbon, the binder and the dispersing agent to form a catalyst layer precursor;
s300, heating the diffusion layer precursor and the catalyst layer precursor at a certain temperature to form paste bodies, respectively coating the paste bodies on two sides of a sheet current collector, and carrying out cold pressing and roasting to obtain a gas diffusion electrode;
preferably, the pore-forming agent is bicarbonate; the bicarbonate is mainly at least one of ammonium bicarbonate, sodium bicarbonate and potassium bicarbonate;
preferably, the dispersant is an alcohol;
the alcohol compound is selected from at least one of methanol, ethanol, propanol, n-propanol, isopropanol, isobutanol and n-butanol.
Optionally, in step S100, uniformly mixing carbon, a binder, a pore-forming agent and a dispersant, wherein the certain temperature is 100-160 ℃;
optionally, in step S200, uniformly mixing carbon, a binder, a pore-forming agent and a dispersant, wherein the certain temperature is 100-160 ℃;
preferably, in step S300, the cold pressing conditions are: the pressure is 2-10 MPa, and the time is 100-200 s;
the roasting conditions are as follows: the roasting temperature is 200-300 ℃; roasting for 1-2 h; the heating rate is 2-7 ℃ per minute.
Optionally, the carbon is powder, and the mesh number of the carbon powder is between 200 and 400. A
Specifically, in step S300, the paste-like diffusion layer precursor is coated on one side of the current collector substrate, and the paste-like catalyst layer precursor is coated on the other side of the current collector substrate, and the paste-like diffusion layer precursor is cold-pressed and baked to obtain the hydrogen peroxide gas diffusion electrode prepared by efficiently electro-reducing oxygen.
Specifically, the upper limit of the pressure of the cold pressing is independently selected from 5MPa, 8MPa, 10 MPa; the lower limit of the pressure of cold pressing is independently selected from 1MPa, 3MPa, 5 MPa.
The upper limit of the calcination temperature is independently selected from 240 ℃, 280 ℃, 300 ℃; the lower limit of the calcination temperature is independently selected from 200 deg.C, 220 deg.C, and 240 deg.C.
The upper limit of the temperature rise speed is independently selected from 3 ℃, 5 ℃ and 7 ℃; the lower limit of the temperature rising speed is independently selected from 1 ℃, 2 ℃ and 3 ℃.
Optionally, before pressing the diffusion layer precursor and the catalytic layer precursor on two sides of the sheet-shaped current collector respectively, the method further comprises performing preliminary treatment on the current collector.
Pretreatment of the pooled stream comprises: and soaking the current collector in an acetone and NaOH solution for ultrasonic treatment, cleaning with deionized water, and airing for later use.
Specifically, the metal substrate was put into acetone and 1 mol L−1Carrying out ultrasonic treatment on the NaOH solution (v/v =1: 0.5-1: 4) for 30-60 min, then placing the treated solution in deionized water for ultrasonic treatment for 30-60 min, and airing for later use.
According to another aspect of the application, a method for preparing hydrogen peroxide by electroreduction of oxygen is also provided, and hydrogen peroxide is prepared by electroreduction of the gas diffusion electrode and the gas diffusion electrode prepared by the preparation method.
According to still another aspect of the application, a method for degrading organic wastewater is further provided, and the gas diffusion electrode described in any one of the above and the gas diffusion electrode obtained by any one of the above preparation methods are used for carrying out electrocatalytic oxidative degradation on the organic wastewater.
Optionally, the gas diffusion electrode is a cathode, and under the condition of air or pure oxygen, the gas diffusion electrode cooperates with the anode to perform electrocatalytic oxidative degradation on the organic wastewater;
the anode comprises any one of a carbon electrode, a ruthenium electrode, a platinum electrode, a lead dioxide electrode, a manganese dioxide electrode and a tin dioxide electrode.
Specifically, the carbon electrode includes any one of a graphite electrode and a carbon nanofiber electrode.
Optionally, the conditions of the electrocatalytic oxidative degradation are: the reaction temperature is 20-80 ℃, and the current density is 10-70 mA/cm2The salinity is 0.5% -10%.
Specifically, in the electrocatalytic oxidative degradation process, the upper limit of the temperature is independently selected from 80 ℃, 70 ℃, 60 ℃ and 50 ℃; the lower limit of the temperature is independently selected from the group consisting of 20 deg.C, 30 deg.C, 40 deg.C, and 50 deg.C.
The upper limit of the current density during electrocatalytic oxidative degradation is independently 70mA/cm2、60mA/cm2(ii) a The lower limit of the current density is independently 10 mA/cm2、20mA/cm2。
Optionally, in the process of carrying out electrocatalytic oxidation to degrade the organic wastewater, a catalyst is also contained;
the catalyst comprises an iron-based catalyst or a copper-based catalyst.
The iron-based catalyst comprises Fe/C, Fe/Al2O3、Fe/CF、Fe/Ni foam、Fe/ZrO2；
The copper-based catalyst comprises Cu/C, Cu/A12O3、Cu/ CF、Cu/Ni foam、Cu/ZrO2；
The organic wastewater contains organic matters such as phenol, nitrobenzene, m-cresol, methyl orange, acrylic acid, acetic acid, glyphosate and the like.
The invention discloses a preparation method of a hydrophobic carbon-based gas diffusion electrode for preparing hydrogen peroxide by efficiently electrically reducing oxygen, which is characterized in that a metal material is used as a substrate and a current collecting layer, polytetrafluoroethylene and the like are used as a binder and a hydrophobic agent, carbonate is used as a pore-forming agent, carbon powder and binder tablets are used as catalyst layers of the electrode, the carbon powder, the binder and the pore-forming agent tablets are used as electrode diffusion layers, the electrode diffusion layers are respectively arranged at two ends of the substrate and are pressed under certain pressure, then the gas diffusion electrode is obtained by high-temperature roasting, the electrode can efficiently electrically reduce oxygen in an electrocatalytic oxidation system to prepare hydrogen peroxide, and can rapidly degrade organic pollutants in waste water in cooperation with an anode.
The beneficial effects that this application can produce include:
1) the high-efficiency electroreduction oxygen prepared by the invention for preparing the hydrogen peroxide gas diffusion electrode has the characteristics of simple preparation, low price and the like.
2) The hydrogen peroxide gas diffusion electrode prepared by the invention can efficiently prepare hydrogen peroxide at the cathode and can rapidly degrade organic matters in water in cooperation with the anode.
3) The high-efficiency electroreduction hydrogen peroxide preparation gas diffusion electrode prepared by the invention can not only reduce the charged oxygen to prepare hydrogen peroxide, but also reduce the oxygen generated by the anode oxygen evolution side reaction for preparing the hydrogen peroxide, thereby reducing the energy loss caused by the side reaction.
Drawings
FIG. 1 is an electron microscope image of a gas diffusion electrode in example 1 of the present application.
FIG. 2 is an electron microscope image of a gas diffusion electrode in example 2 of the present application.
FIG. 3 is a diagram illustrating the production of H by electroreduction of a gas diffusion electrode in example 1 of the present application2O2Experimental picture.
FIG. 4 is a graph showing the experiment of degrading phenol by cooperating the gas diffusion electrode with the anode in example 4 of the present application.
Detailed Description
The present application will be described in detail with reference to examples, but the present application is not limited to these examples.
A hydrophobic carbon-based gas diffusion electrode for preparing hydrogen peroxide by efficiently electro-reducing oxygen comprises a current collector, a diffusion layer and a catalyst layer.
A preparation method of a hydrophobic carbon-based gas diffusion electrode for preparing hydrogen peroxide by efficiently electro-reducing oxygen comprises the following specific steps:
pretreating a current collector, namely an electrode substrate, which can be any one of titanium, iron, nickel, copper and stainless steel, putting the substrate into acetone and 1 mol L of acetone−1Carrying out ultrasonic treatment on NaOH solution (v/v =1: 0.5-1: 4) for 30-60 min, then placing the treated solution in deionized water for ultrasonic treatment for 30-60 min, and airing for later use;
and (II) preparing a diffusion layer, namely mixing carbon powder, a binder, a pore-forming agent and a dispersing agent, stirring at 100-160 ℃, and heating in a water bath until the mixture is pasty.
And (III) preparing the catalyst layer, namely mixing carbon powder, a binder and a dispersing agent, stirring and heating the mixture in water bath at 100-160 ℃ until the mixture is pasty.
And (IV) cold pressing preparation of the gas diffusion electrode, namely cold pressing the diffusion layer and the catalyst layer to two ends of the current collecting layer under the pressure of 2-10 MPa.
And (V) roasting the gas diffusion electrode, namely placing the electrode prepared by cold pressing in a muffle furnace for roasting, wherein the temperature is 200-300 ℃, and the heating rate is 1-7 ℃ per minute.
Preferably, the carbon powder can be one or more of carbon nano tube, acetylene black, graphite powder, activated carbon powder and the like, and the mesh number of the carbon powder is between 200 and 400.
Preferably, the binder can be at least one of polypropylene, polyvinylidene fluoride, polytetrafluoroethylene, polybutylene and polyvinyl chloride, and the mass ratio of the binder to the added carbon powder is 1: 1-5: 1. .
Preferably, the pore-forming agent can be at least one of ammonium bicarbonate, sodium bicarbonate and potassium bicarbonate, and the mass ratio of the pore-forming agent to the carbon powder is 1: 1-8: 1. .
Preferably, the dispersing agent can be at least one of methanol, ethanol, propanol, n-propanol and isopropanol, and the mass ratio of the dispersing agent to the carbon powder is 1: 1-40: 1.
The application of the hydrophobic carbon-based gas diffusion electrode for efficiently electrically reducing oxygen to generate hydrogen peroxide is characterized in that the gas diffusion electrode can be used for degrading salt-containing organic wastewater in cooperation with anodic electro-catalytic oxidation.
Preferably, the anode may be any one of a carbon electrode, a ruthenium electrode, a platinum electrode, a lead dioxide electrode, a manganese dioxide electrode, and a tin dioxide electrode.
Preferably, a granular catalyst with the mesh number of 50-80 meshes can be added in the electrocatalytic oxidation process.
Further preferably, the catalyst added is a supported iron or copper catalyst.
In the examples, the organic matter degrading performance of the samples was measured by using an Shimadzu total organic carbon analyzer.
In the examples, the conversion of organic substances was measured by HPLC-P1201 type high performance liquid chromatography.
In the examples, an ultraviolet spectrometer was used for hydrogen peroxide testing.
Organic matter removal rate = (C)0-Ct）/C0*100%
C0Is the initial organic concentration, CtInitial organic matter concentration at time t
Total organic carbon removal = (TOC)0-TOCt)/TOC0*100%
TOC0As initial total organic carbon, TOCtTotal organic carbon at time t.
Example 1 preparation of gas diffusion electrode and electric hydrogen peroxide production test
Selecting a titanium mesh as a current collector, and putting the current collector into acetone and 1 mol L of acetone−1Carrying out ultrasonic treatment in NaOH (v/v =1:3) for 40 min, then placing in deionized water for ultrasonic treatment for 40 min, and airing for later use;
preparing a diffusion layer, namely mixing carbon powder, a binder, a pore-forming agent and a dispersing agent, stirring at 120 ℃ in a water bath, and heating until the mixture is pasty, wherein the carbon powder is 200-mesh activated carbon powder, the binder is polyvinylidene fluoride (the polymerization degree is 1500), the mass ratio of the polyvinylidene fluoride to the carbon powder is 1:3, the pore-forming agent is ammonium carbonate, the mass ratio of the ammonium carbonate to the carbon powder is 1:5, and the mass ratio of the methyl alcohol to the carbon powder is 1: 8;
(III) preparing the catalyst layer, which is similar to the preparation method of the diffusion layer, except that no pore-forming agent is added;
fourthly, preparing a gas diffusion electrode by cold pressing, namely cold pressing the diffusion layer and the catalytic layer to two ends of the current collecting layer under the pressure of 8MPa, wherein the cold pressing time is 100 s;
and (V) roasting the gas diffusion electrode, namely placing the electrode prepared by cold pressing in a muffle furnace for roasting at 260 ℃, the roasting time is 1.1h, and the heating rate is 3 ℃ per min to obtain the gas diffusion electrode which is recorded as a sample 1 #.
In sample # 1, the thickness ratio of the diffusion layer, the current collector, and the catalytic layer was 2: 1: 2.
in the diffusion layer, the aperture of the porous structure is 1-3 mm.
A platinum electrode is taken as an anode, a gas diffusion electrode sample No. 1 prepared in the embodiment is taken as a cathode, a 0.3mol/L sodium sulfate aqueous solution is taken as an electrolyte, an experiment for generating hydrogen peroxide by electricity is carried out in an electrocatalytic oxidation device, the pressure of charged oxygen is 2 MPa, the temperature is raised to 60 ℃, and the current density is 10 mA/cm2The time is 90 min, and the concentration of the prepared hydrogen peroxide is 300 mg/L.
Example 2 preparation of gas diffusion electrode and electric hydrogen peroxide production test
Unlike example 1, the carbon powder used was a mixture of carbon nanotubes and activated acetylene black in a mass ratio of 1:3, the binder used was polytetrafluoroethylene (polymerization degree of 1000), and the resulting gas diffusion electrode was prepared and designated sample # 2.
In sample 2#, the thickness ratio of the diffusion layer, current collector, catalytic layer was 2: 3: 2.
in the diffusion layer, the aperture of the porous structure is 2-3 mm.
Performing an electroproduction hydrogen peroxide experiment in an electrocatalytic oxidation device by using the prepared 2# electrode as a cathode, a ruthenium electrode as an anode and 0.5 mol/L aqueous solution of sodium sulfate as electrolyte, wherein the pressure of the charged oxygen is 2 MPa, the temperature is increased to 80 ℃, and the current density is 30 mA/cm2The time is 2 hours, and the concentration of the prepared hydrogen peroxide is 532 mg/L.
Example 3 preparation of gas diffusion electrode and electric hydrogen peroxide production test
Different from the embodiment 1, the carbon powder is acetylene black, the adhesive is polytetrafluoroethylene (with a polymerization degree of 1800), the dispersant is ethanol, the cold pressing pressure is 8MPa, the cold pressing time is 150s, the roasting temperature is 260 ℃ and the roasting time is 1.5h, and the prepared gas diffusion electrode is marked as sample # 3.
In sample 3#, the thickness ratio of the diffusion layer, the current collector, and the catalytic layer was 4: 1: 4.
in the diffusion layer, the aperture of the porous structure is 3-6 mm.
The prepared electrode is taken as a cathode, a platinum electrode is taken as an anode, 0.1 mol/L aqueous solution of sodium sulfate is taken as electrolyte, an electroproduction hydrogen peroxide experiment is carried out in a catalytic wet type electrocatalytic oxidation device, the pressure of charged oxygen is 4 MPa, the temperature is increased to 80 ℃, and the current density is 5 mA/cm2The time is 2h, and the concentration of the prepared hydrogen peroxide is 724 mg/L.
Example 4 preparation of gas diffusion electrode
Preparation of sample 4# gas diffusion electrode: different from the embodiment 1, the mass ratio of the binder to the carbon powder is 1:5, the mass ratio of the pore-forming agent to the carbon powder is 1:5, the mass ratio of the dispersant to the carbon powder is 1:8, the cold pressing pressure is 6MPa, the cold pressing time is 120s, the roasting temperature is 280 ℃, the roasting time is 1.5h, and the temperature rising rate is 7 ℃ per minute, so that the sample No. 4 gas diffusion electrode is obtained.
Preparation of sample # 5 gas diffusion electrode: different from the embodiment 1, the mass ratio of the binder to the carbon powder is 1:4, the mass ratio of the pore-forming agent to the carbon powder is 1:8, the mass ratio of the dispersant to the carbon powder is 1:20, the cold pressing pressure is 10MPa, the cold pressing time is 150s, the roasting temperature is 290 ℃, the roasting time is 1h, and the temperature rising rate is 5 ℃ per minute, so that the sample No. 5 gas diffusion electrode is obtained.
Example 5 degradation of waste Water test
The No. 4 electrode in example 4 is used as a cathode, a tin dioxide electrode is used as an anode, 0.1 mol/L aqueous solution of sodium sulfate is used as electrolyte, a phenol wastewater experiment with the cathode and anode degradation concentration of 1000 ppm is carried out in an electrocatalytic oxidation device, the pressure of charged oxygen is 2 MPa, the temperature is raised to 60 ℃, and the current density is 10 mA/cm2The time is 1.5h, the phenol removal rate is 100%, and the total organic carbon removal rate is 53.20%.
Comparative example
The difference from the present embodiment is: taking a titanium mesh as a cathode; the phenol removal rate was 62.3%, and the total organic carbon removal rate was 23.2%.
The experimental effect of example 5 is much higher than that of the comparative example.
Example 6 degradation of waste Water test
The electrode in example 5 is used as a cathode, and lead dioxide is usedAdding 2g/L Fe/AC catalyst and 0.1 mol/L sodium sulfate aqueous solution as electrolyte into an anode, and performing a cathode and anode co-degradation experiment on acrylic acid wastewater with the concentration of 1000 ppm in an electrocatalytic oxidation device, wherein the pressure of oxygen gas is 3MPa, the temperature is 80 ℃, and the current density is 20 mA/cm2The time is 1.5h, the removal rate of acrylic acid is 93.2 percent, and the removal rate of total organic carbon is 67.32 percent.
Although the present application has been described with reference to a few embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the application as defined by the appended claims.
Claims (10)
1. A hydrophobic carbon-based gas diffusion electrode, characterized in that the gas diffusion electrode comprises a current collector, a diffusion layer and a catalytic layer;
the current collector, the diffusion layer and the catalyst layer are respectively positioned in the middle and at two sides in a sandwich-shaped manner;
the diffusion layer and the catalytic layer are mainly made of carbon materials and have a porous structure.
2. The hydrophobic carbon-based gas diffusion electrode according to claim 1, wherein the current collector is a metallic material;
the diffusion layer and the catalytic layer include carbon and a binder.
3. The hydrophobic carbon-based gas diffusion electrode according to claim 2, wherein the metallic material comprises any of titanium, iron, nickel, copper, stainless steel;
the carbon comprises at least one of carbon nano tube, acetylene black, graphite powder and activated carbon powder;
the binder comprises at least one of polypropylene, polyvinylidene fluoride, polytetrafluoroethylene, polybutylene and polyvinyl chloride.
4. The hydrophobic carbon-based gas diffusion electrode according to claim 1, wherein the mass ratio of the diffusion layer to the catalytic layer is 1-5: 1-5;
preferably, the pore diameter of the diffusion layer and the catalytic layer is 3: 1.
5. a method of making a hydrophobic carbon-based gas diffusion electrode, the method comprising:
s100, uniformly mixing the carbon, the binder, the pore-forming agent and the dispersing agent to form a diffusion layer precursor;
s200, uniformly mixing the carbon, the binder and the dispersing agent to form a catalyst layer precursor;
s300, heating the diffusion layer precursor and the catalyst layer precursor at a certain temperature to form paste bodies, respectively coating the paste bodies on two sides of a sheet current collector, and carrying out cold pressing and roasting to obtain a gas diffusion electrode;
preferably, the pore-forming agent is bicarbonate; the bicarbonate is mainly at least one of ammonium bicarbonate, sodium bicarbonate and potassium bicarbonate;
preferably, the dispersant is an alcohol;
the alcohol comprises at least one of methanol, ethanol, propanol, n-propanol and isopropanol.
6. The preparation method of claim 5, wherein in step S100, carbon, a binder, a pore-forming agent and a dispersant are uniformly mixed, and the certain temperature is 100-160 ℃;
preferably, in step S200, carbon, a binder, a pore-forming agent and a dispersant are uniformly mixed, wherein the certain temperature is 100 to 160 ℃;
preferably, in step S300, the cold pressing conditions are: the pressure is 2-10 MPa, and the time is 100-200 s;
the roasting conditions are as follows: the roasting temperature is 200-300 ℃; roasting for 1-2 h; the heating rate is 2-7 ℃ per minute.
7. A method for preparing hydrogen peroxide by electroreduction of oxygen is characterized in that the hydrogen peroxide is prepared by electroreduction of oxygen by using the hydrophobic carbon-based gas diffusion electrode of any one of claims 1 to 4 and the gas diffusion electrode prepared by the preparation method of any one of claims 5 to 6.
8. A method for degrading organic wastewater, which is characterized in that hydrogen peroxide can be efficiently prepared and organic wastewater can be subjected to electrocatalytic oxidative degradation by using the hydrophobic carbon-based gas diffusion electrode according to any one of claims 1 to 4 and the gas diffusion electrode prepared by the preparation method according to any one of claims 5 to 6.
9. The method according to claim 8, wherein the hydrophobic carbon-based gas diffusion electrode is a cathode, and can efficiently prepare hydrogen peroxide or cooperate with the anode to carry out electrocatalytic degradation on organic wastewater under the condition of air or oxygen exposure;
the anode comprises any one of a carbon electrode, a ruthenium electrode, a platinum electrode, a lead dioxide electrode, a manganese dioxide electrode and a tin dioxide electrode.
10. The method according to claim 9, characterized in that the conditions of electrocatalytic degradation are: the reaction temperature is 20-80 ℃, and the current density is 10-70 mA/cm2The salinity is 0.5% -10%.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113718280A (en) * | 2021-08-31 | 2021-11-30 | 苏州清缘环保科技有限公司 | Gas diffusion electrode and method for producing same |
| CN113774416A (en) * | 2021-11-15 | 2021-12-10 | 广东工业大学 | Gas diffusion cathode and electrochemical reactor for in-situ production of hydrogen peroxide |
| CN113718280B (en) * | 2021-08-31 | 2024-04-26 | 苏州清氧环境科技有限公司 | Gas diffusion electrode and method for producing same |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113718280A (en) * | 2021-08-31 | 2021-11-30 | 苏州清缘环保科技有限公司 | Gas diffusion electrode and method for producing same |
| CN113718280B (en) * | 2021-08-31 | 2024-04-26 | 苏州清氧环境科技有限公司 | Gas diffusion electrode and method for producing same |
| CN113774416A (en) * | 2021-11-15 | 2021-12-10 | 广东工业大学 | Gas diffusion cathode and electrochemical reactor for in-situ production of hydrogen peroxide |
| CN113774416B (en) * | 2021-11-15 | 2022-03-04 | 广东工业大学 | Gas diffusion cathode and electrochemical reactor for in-situ production of hydrogen peroxide |
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Application publication date: 20210416 |
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