CN216378417U - Flow type electrochemical device for preparing hydrogen peroxide - Google Patents
Flow type electrochemical device for preparing hydrogen peroxide Download PDFInfo
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- CN216378417U CN216378417U CN202122198989.XU CN202122198989U CN216378417U CN 216378417 U CN216378417 U CN 216378417U CN 202122198989 U CN202122198989 U CN 202122198989U CN 216378417 U CN216378417 U CN 216378417U
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Abstract
The utility model discloses a flowing type electrochemical device for preparing hydrogen peroxide, which is provided with a reactor, an external power supply and an external water pump, wherein the reactor comprises an electrolyte cavity, a cathode electrode and an anode electrode, a liquid inlet and a liquid outlet are respectively arranged on the opposite surfaces of the electrolyte cavity, the external water pump is connected with the liquid inlet and/or the liquid outlet, the cathode electrode and the anode electrode are arranged in the electrolyte cavity, the external power supply is respectively and electrically connected with the cathode electrode and the anode electrode, a partition board for separating the electrodes and enhancing the eddy effect of the electrolyte is arranged between the cathode electrode and the anode electrode, and the partition board is an insulating partition board. The flow type electrochemical device for preparing hydrogen peroxide is a flow type hydrogen peroxide generating device with simple design, can synthesize hydrogen peroxide by using tap water or natural water as electrolyte, can improve the concentration of the generated hydrogen peroxide solution according to requirements, and is simple and easy to use.
Description
Technical Field
The utility model relates to the field of electrochemical equipment, in particular to a flow type electrochemical device for preparing hydrogen peroxide.
Background
Hydrogen peroxide, formula H2O2As another hydrogen oxide other than water, there is a chemical substance which naturally exists in air and water and is naturally present. Hydrogen peroxide has strong oxidizability, and the reduction product is water, does not introduce impurities and does not pollute the environment, so the hydrogen peroxide is an oxidant with wide application, is an important chemical product for various industrial applications, and has application in the fields of chemical synthesis, paper pulp and papermaking, textile bleaching, cleaning and etching, environmental protection and the like. As early as the 18 th century, humans discovered and started using hydrogen peroxide, however, the existing industry produces hydrogen peroxide in a cumbersome process requiring the use of large-scale, energy-intensive production equipment. Moreover, hydrogen peroxide solutions are unstable and require suitable containers for transport and storage to prevent hydrogen peroxide from photodegradation, and the naturally decomposed oxygen also presents additional equipment costs and potential safety hazards to the transport and storage facilities, adding corresponding costs.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems of large scale, high energy consumption and inconvenient field application of equipment for producing hydrogen peroxide solution in the prior art, the utility model provides a novel efficient and clean flow type electrochemical reaction device which is small and distributed without a diaphragm and generates hydrogen peroxide through a two-electron oxygen reduction reaction. A cathode electrode and an anode electrode for generating hydrogen peroxide and a clapboard for supporting and separating the electrodes are arranged in an electrolyte cavity of the reaction device; when the electrolyte flows through the electrochemical reactor, under the action of a proper electrode material and a catalyst, a two-electron oxygen reduction reaction is carried out at a cathode, dissolved oxygen in the electrolyte is taken as a reactant, generated hydrogen peroxide can be diffused into the electrolyte, meanwhile, a water oxidation reaction can be carried out on an anode in the same step, water in the electrolyte is taken as a reactant, oxygen is generated, and the oxygen is dissolved into the electrolyte or dispersed into bubbles to be carried out by the flowing electrolyte.
The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides a preparation hydrogen peroxide's mobile formula electrochemical device, is equipped with reactor, external power supply and external water pump, the reactor includes electrolyte cavity, cathode electrode and anode electrode, be equipped with inlet and liquid outlet on the face that the electrolyte cavity is relative respectively, external water pump is connected with inlet and/or liquid outlet, cathode electrode and anode electrode set up inside the electrolyte cavity, external power supply respectively with cathode electrode and anode electrode electricity are connected, be equipped with the baffle of separating electrode and reinforcing electrolyte vortex effect between cathode electrode and the anode electrode, the baffle is insulating barrier.
The technical scheme adopted by the utility model for solving the technical problem further comprises the following steps:
the flow-type electrochemical device as described above, wherein the separator is one or more of a grid plate, a porous plate or a three-dimensional porous polymer fiber plate, and the separator is made of one of a three-dimensional porous polymer fiber material, ceramic or plastic.
In the above flowing electrochemical device, the cathode and the anode are disposed along the length direction of the electrolyte chamber, the cathode and the anode are in the shape of a plate or an arc plate matching the shape of the inner wall of the electrolyte chamber, and the cathode and the anode are oppositely fixed on the inner wall of the electrolyte chamber at two sides of the separator.
The flowing electrochemical device as described above, the cathode and the anode are disposed along the length direction of the electrolyte chamber, the cathode is cylindrical, the anode is strip-shaped, the anode is disposed at the axis of the cathode, the separator is a cylindrical three-dimensional porous polymeric fiberboard, the size of the separator is matched with that of the cathode, the separator is inserted into the cathode, and the anode is inserted into the separator.
The mobile electrochemical device comprises two fixing parts and two flow guide parts, wherein the fixing parts are arranged on two sides of the electrolyte cavity and fix the cathode electrode or the anode electrode on the inner wall of the electrolyte cavity, the flow guide parts are more than two, one end of each flow guide part is fixedly arranged on one fixing part, a gap is reserved between the other end of each flow guide part and the other fixing part, and the adjacent flow guide parts are arranged in a staggered mode, so that a channel for electrolyte to flow is formed between the flow guide parts.
In the above flowing electrochemical device, a filter is disposed at the inlet, and the filter is a porous ceramic filter or a polymeric fiber filter.
In the above flowing electrochemical device, the liquid inlet is provided with a filter, and the filter is a porous ceramic filter or a polymeric fiber filter.
In the above flowing electrochemical device, the cathode electrode is made of one of nickel foam, porous graphite plate, sintered titanium, activated carbon felt, or carbon paper.
In the flow electrochemical device, the cathode electrode is coated with a cathode catalyst, and the cathode catalyst is one of Pt/C, PtHg4, O-CNTs, graphite oxide, high-surface-area activated carbon powder, high-surface-area graphite oxide, M-N-C (M ═ Co, Fe, Mn), functionalized carbon powder, and the like.
In the flow-type electrochemical device, the anode material is an alloy of one or more of platinum, palladium, nail, rhodium, iridium, osmium and gold and one or more of iron, cobalt and nickel, or a boron-doped diamond film or glassy carbon.
In the flow-through electrochemical device as described above, the anode electrode is coated or deposited with a water Oxidation (OER) catalyst on a surface thereof, and the water Oxidation (OER) catalyst is one of NiCoOx, CoFeOx, IrOx/SrIrO3, IrO2, RuO2, FeCoW, NiOx, NiFeOx, or solid Pt.
The utility model has the beneficial effects that: the flowing type electrochemical device for preparing hydrogen peroxide is a hydrogen peroxide hair generation device which is simple in design, small in size, distributed, flowing, real-time, online, more energy-saving and safer, can generate oxygen reduction electrochemical reaction to synthesize hydrogen peroxide by using tap water or natural water which is common in daily life as electrolyte, and can increase the concentration of the generated hydrogen peroxide by adding daily visible electrolyte solute when needed; in addition, the problem of safety and economy of hydrogen peroxide transportation and storage is solved, the hydrogen peroxide disinfectant can be conveniently installed in various household appliances, and the instant production and use of hydrogen peroxide in daily life and production activities are realized, so that the application range of the excellent hydrogen peroxide disinfectant in the purposes of disinfection, sterilization and pollutant purification in families and public spaces is greatly expanded.
The utility model will be further described with reference to the accompanying drawings and specific embodiments.
Drawings
FIG. 1 is a schematic connection diagram of a first embodiment of a flow-type electrochemical device for preparing hydrogen peroxide according to the present invention;
FIG. 2 is a schematic cross-sectional view of a reactor of an embodiment of the flow-type electrochemical device for preparing hydrogen peroxide according to the present invention;
FIG. 3 is a graph comparing the concentration of hydrogen peroxide solution generated by other reaction devices according to one embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view of a second reactor of an embodiment of the flow-type electrochemical device for preparing hydrogen peroxide according to the present invention;
in the figure, 1, a reactor, 11, an electrolyte cavity, 111, a liquid inlet, 112, a liquid outlet, 12, a cathode electrode, 13, an anode electrode, 14, a partition board, 141, a fixing part, 142, a flow guide part, 2, an external power supply, 3, a filter, 4 and an external water pump.
Detailed Description
The present embodiment is a preferred embodiment of the present invention, and other principles and basic structures that are the same as or similar to the present embodiment are within the scope of the present invention.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the utility model.
Referring to fig. 1 and 2, the first embodiment of the mobile electrochemical device for preparing hydrogen peroxide of the present invention is provided with two reactors 1, an external power supply 2 and an external water pump 4, wherein the external water pump 4 is connected to a liquid outlet of the second reactor 1 in order to facilitate transportation of the produced hydrogen peroxide solution to a use destination. The reactor 1 comprises an electrolyte cavity 11, a cathode electrode 12 and an anode electrode 13, in this embodiment, the electrolyte cavity 11 is a cuboid, the inside is a hollow electrolyte cavity, a liquid inlet 111 and a liquid outlet 112 are respectively arranged on the top surface and the bottom surface of the electrolyte cavity 11, the liquid inlet 111 is arranged on the left side of the bottom surface, and the liquid outlet 112 is arranged on the right side of the top surface. The cathode electrode 12 and the anode electrode 13 are arranged inside the electrolyte cavity 11, the external power supply 2 is electrically connected with the cathode electrode 12 and the anode electrode 13 through an electric wire penetrating through the electrolyte cavity 11, and the electrolyte cavity 11 is provided with an electric wire hole through which a power supply wire penetrates and a sealing edge for sealing the electric wire hole. In order to avoid short circuit, a separator 14 for separating the electrodes and enhancing the eddy effect of the electrolyte is arranged between the cathode electrode 12 and the anode electrode 13, and the separator 14 is an insulating separator and is made of an insulating material. In addition, in the concrete production implementation, the external water pump 4 can be used for conveying the hydrogen peroxide solution flowing out of the liquid outlet 112 to the liquid inlet 111 again, so that the hydrogen peroxide solution can be circularly reacted, the reaction rate is improved, and the concentration of the hydrogen peroxide solution is improved. The external power supply 2 can be selected from lithium batteries, lead-acid batteries, nickel-metal hydride batteries, dry batteries and other power supplies, and can also convert commercial power alternating current into direct current through a corresponding circuit for use, the voltage of the external power supply 2 is optimally selected according to parameters such as the area of an electrode, the conductivity of electrolyte and the like, and the external power supply in the embodiment is commercial power alternating current converted into direct current by utilizing the circuit.
In this embodiment, the cathode 12 and the anode 13 are disposed along the length direction of the electrolyte chamber 11, the cathode 12 and the anode 13 are shaped like a plate matching the inner wall of the electrolyte chamber 11, and the cathode 12 and the anode 13 are oppositely fixed on the inner wall of the electrolyte chamber 11 at both sides of the partition 14. In a specific production implementation, the shape of the electrode may be provided in an arc plate shape according to the shape of the inner wall of the electrolyte chamber 11.
In order to increase the eddy effect of the electrolyte in the electrolyte cavity 11, improve the reaction efficiency, and increase the product concentration, the partition plate 14 of this embodiment includes two fixing portions 141 and a flow guiding portion 142, the fixing portions 141 are disposed on two sides of the electrolyte cavity 11 and fix the cathode electrode 12 or the anode electrode 13 on the inner wall of the electrolyte cavity 11, and the inner wall of the electrolyte cavity 11 is provided with a slot for fixing the cathode electrode 12 or the anode electrode 13 in a matching manner. In order to make the electrolyte contact with the electrodes, the fixing portion 141 is a grid plate in this embodiment, and in practical production, the fixing portion 141 can also be directly made into a frame body with a size matching with the shape of the inner wall of the electrolyte chamber 11 or a support plate made of three-dimensional porous polymer fibers. The fixing portions 141 are respectively provided with a flow guiding portion 142, in this embodiment, the flow guiding portions 142 are plate-shaped, and the flow guiding portions 142 on the two fixing portions 141 are oppositely arranged and staggered with each other to form a bent flow channel for bending the electrolyte flowing. The number of the flow guiding parts 142 is ten in the embodiment according to the increase and decrease of the length of the electrolyte chamber 11 under the condition of ensuring the free flow of the electrolyte. When the electrolysis also enters the electrolyte cavity 11 through the liquid inlet 111 at a high flow rate, a turbulent flow with a large intensity is generated under the action of the flow guiding part 142, and the cathode reaction is promoted to be carried out.
Considering the convenience of use, the electrolyte of the mobile electrochemical device for preparing hydrogen peroxide according to this embodiment may be a common water body such as treated tap water and mineral water, or a natural water body such as rainwater, river water and seawater, or untreated domestic wastewater and industrial wastewater. In order to avoid the blocking of the reactor 1 by impurities possibly contained in the electrolyte during use, the reactor 1 of the present embodiment is provided with a filter 3 at the liquid inlet 111, and the filter 3 is a porous ceramic filter so as to sufficiently take out solid substances in the electrolyte. In the specific use, different types and filtering effects of filters such as a polymeric fiber filter, an activated carbon filter and the like can be selected according to the filtering requirements.
The flow type electrochemical device for preparing hydrogen peroxide generates hydrogen peroxide through two-electron oxygen reduction reaction, and the total reaction is as follows:
H2+0.5O2→H2O2
the reactions that occur specifically at the cathode are as follows:
O2+2(H++e-)→H2O2
therefore, the cathode electrode material should be selected to have a three-dimensional structure to facilitate the adhesion of the cathode catalyst, and to increase the relative surface area of the cathode and the efficiency of hydrogen peroxide generation. In this embodiment, the cathode electrode 12 is made of a porous graphite plate, and may be made of one of nickel foam, sintered titanium, activated carbon felt, or carbon paper. In order to inhibit the four-electron oxygen reduction reaction generated at the cathode end and improve the yield of hydrogen peroxide, the cathode electrode 12 is coated with a cathode catalyst, the cathode catalyst in the embodiment is graphite oxide with high specific surface area, and the cathode catalyst can be Pt/C, PtHg according to the components of cathode materials and electrolyte in specific production implementation4O-CNTs, graphite oxide, high surface area activated carbon powder, M-N-C (M ═ Co, Fe, Mn), and functionalized carbon powder.
Meanwhile, the electrolysis reaction of water occurs at the anode side of the electrochemical reaction device, which is specifically as follows:
H2O→0.5O2+2(H++e-)
therefore, the anode electrode 13 should be made of a metal material which is stable in property and not easy to be oxidized, such as an alloy of one or more of platinum, palladium, ruthenium, rhodium, iridium, osmium and gold and one or more of iron, cobalt or nickel, or a non-metal material which has a wide electrochemical potential window, good physical and chemical stability and low adsorption characteristics, such as a boron-doped diamond film and glassy carbon. In this embodiment, the anode electrode 13 is a glassy carbon electrode. Meanwhile, in order to promote the water oxidation reaction, the surface of the anode electrode 13 is coated or deposited with a water Oxidation (OER) catalyst, and the water Oxidation (OER) catalyst can be selected from NiCoOx, CoFeOx, IrOx/SrIrO3, IrO2, RuO2, FeCoW, NiOx, NiFeOx or solid Pt, in this embodiment, the water Oxidation (OER) catalyst coated on the anode electrode 13 is solid Pt.
Referring to fig. 4, the second embodiment of the flow-type electrochemical device for preparing hydrogen peroxide of the present invention is provided with a reactor 1 and an external power supply 2, wherein the reactor 1 comprises an electrolyte cavity 11, a cathode electrode 12 and an anode electrode 13. In this embodiment, the electrolyte chamber 11 is a hollow cylinder, and the inside of the electrolyte chamber is an electrolyte chamber for electrochemical reaction, and the liquid inlet 111 and the liquid outlet 112 are respectively disposed on two bottom surfaces of the cylindrical electrolyte chamber 11 and are staggered with each other. The cathode electrode 12 and the anode electrode 13 are arranged inside the electrolyte cavity 11 along the length direction of the electrolyte cavity 11, the cathode electrode 12 is in a cylindrical shape matched with the shape of the inner wall of the electrolyte cavity 11 and is fixedly arranged on the inner wall of the electrolyte cavity 11, and the inner wall of the electrolyte cavity 11 is provided with a fixing structure capable of fixing the cathode electrode 12; the anode electrode 13 is strip-shaped and is arranged at the axis of the cathode electrode 12, and the two bottom surfaces of the electrolyte cavity 11 are provided with fixed slots which are oppositely arranged to fix the anode electrode 12. The external power supply 2 is electrically connected with the cathode electrode 12 and the anode electrode 13 through wires penetrating through the electrolyte cavity 11, and the electrolyte cavity 11 is provided with a wire hole through which a power supply wire penetrates and a sealing edge for sealing the wire hole. The separator 14 is a cylindrical three-dimensional porous polymer fiber plate, the size of the separator 14 is matched with that of the cathode electrode 12, the separator 14 is inserted in the cathode electrode 12, and the anode electrode 13 is inserted in the separator 14. Because the three-dimensional porous polymer fiber material has good compressibility and certain rigidity, the supporting force of the separator 14 on the cathode electrode 12 can be flexibly adjusted by adjusting the compression amount of the material, and the short circuit caused by the contact of the cathode electrode 12 and the anode electrode 13 is prevented. In addition, the porous structure of the three-dimensional porous polymeric fiber material can enable the electrolyte to generate a great amount of micro turbulence when the electrolyte passes through, enhance the ion exchange rate on the cathode and the anode, promote the generation rate of hydrogen peroxide and improve the reaction rate.
In this embodiment, the cathode electrode 12 in this embodiment is made of foamed nickel, and the cathode catalyst coated on the cathode electrode 12 is Pt/C. The anode electrode 13 is made of IrO (iridium iron alloy) serving as a water Oxidation (OER) catalyst deposited on the surface of the iridium iron alloy anode electrode 132。
The beneficial effects of the present invention are demonstrated by the following experiments.
First, experimental design
The test was carried out using the test conditions as indicated in table one:
second, analysis of test results
Referring to fig. 3, the test group 1, using the separator-removed flow-type electrochemical device of the first example, was able to demonstrate that the concentration of the hydrogen peroxide solution generated by the flow-type electrochemical device was finally 30mg/L, which is significantly higher than that of the non-flow-type reaction device, under the condition that the dc voltage was 12V and only tap water was used as the electrolyte, and the reaction rate of the electrolytic reaction was improved by the flow-type reaction device; the test group 2 adopts the complete flow-type electrochemical device of the first embodiment, and under the condition that the direct-current voltage is 12V and only tap water is used as electrolyte, the generation rate and equilibrium concentration of hydrogen peroxide are improved more remarkably, which shows that the reaction equilibrium can be changed and the reaction rate can be improved by arranging the partition board to increase the eddy effect of the electrolyte; the test group 3 employs the flow-type electrochemical device of the first embodiment, and under the conditions of a direct-current voltage of 12V and using a 0.1mol/L sodium sulfate solution as an electrolyte, the concentration of the generated hydrogen peroxide can be increased by about 10 times, and the concentration of about 1000mg/L (0.1% mass fraction) is reached, thereby greatly expanding the applicable scenes of the utility model. The non-flow stainless steel electrode electrolytic cell used as a comparative experiment was capable of producing only a hydrogen peroxide solution having a concentration of about 2 mg/L. The above experimental results demonstrate that the present invention can provide a flow-type electrochemical device that efficiently and rapidly generates a hydrogen peroxide solution of a desired concentration.
The flowing type electrochemical device for preparing hydrogen peroxide is a hydrogen peroxide hair-generating device which is simple in design, small in size, distributed, flowing, real-time, online, more energy-saving and safer, can generate oxidation-reduction electrochemical reaction to synthesize hydrogen peroxide by using tap water or natural water which is common in daily life as electrolyte, and can increase the concentration of the generated hydrogen peroxide by adding daily visible electrolyte solute when needed; in addition, the problem of safety and economy of hydrogen peroxide transportation and storage is solved, the hydrogen peroxide disinfectant can be conveniently installed in various household appliances, and the instant production and use of hydrogen peroxide in daily life and production activities are realized, so that the application range of the excellent hydrogen peroxide disinfectant in the purposes of disinfection, sterilization and pollutant purification in families and public spaces is greatly expanded.
Claims (9)
1. The utility model provides a preparation hydrogen peroxide's mobile formula electrochemical device, its characterized in that is equipped with more than one reactor (1) and external power supply (2), reactor (1) is including electrolyte cavity (11), cathode electrode (12) and anode electrode (13), be equipped with inlet (111) and outlet (112) on the face that electrolyte cavity (11) is relative respectively, cathode electrode (12) and anode electrode (13) set up inside electrolyte cavity (11), external power supply (2) respectively with cathode electrode (12) and anode electrode (13) electricity are connected, be equipped with between cathode electrode (12) and anode electrode (13) and separate electrode, strengthen baffle (14) of electrolyte vortex effect, baffle (14) are insulating barrier.
2. A flow-through electrochemical device for the production of hydrogen peroxide according to claim 1, wherein the separator (14) is one or more of a flat plate, a grid plate or a perforated plate, and the separator (14) is made of one of a three-dimensional porous polymeric fiber material, ceramic or plastic.
3. The flow-type electrochemical device for producing hydrogen peroxide according to claim 1, wherein the cathode (12) and the anode (13) are disposed along the length direction of the electrolyte chamber (11), the cathode (12) and the anode (13) are in the shape of a plate or arc plate matching the shape of the inner wall of the electrolyte chamber (11), and the cathode (12) and the anode (13) are oppositely fixed on the inner wall of the electrolyte chamber (11) at both sides of the separator (14).
4. The flow-type electrochemical device for preparing hydrogen peroxide according to claim 1, wherein the cathode (12) and the anode (13) are disposed along the length direction of the electrolyte chamber (11), the cathode (12) is cylindrical, the anode (13) is strip-shaped, the anode (13) is disposed at the axial center of the cathode (12), the separator (14) is a cylindrical three-dimensional porous polymeric fiber plate, the size of the separator (14) is matched with that of the cathode (12), the separator (14) is inserted into the cathode (12), and the anode (13) is inserted into the separator (14).
5. The flow-through electrochemical device for the production of hydrogen peroxide according to claim 3, wherein the separator (14) comprises two fixing portions (141) and a flow guide portion (142), the two fixing portions (141) being disposed on both sides of the electrolyte chamber (11) and fixing the cathode electrode (12) or the anode electrode (13) on the inner wall of the electrolyte chamber (11); the fixing parts (141) are respectively provided with a flow guide part (142), and the flow guide parts (142) on the two fixing parts (141) are oppositely arranged and mutually staggered to form a bending flow channel for bending the circulating electrolyte.
6. The flow-through electrochemical device for the production of hydrogen peroxide according to claim 1, wherein a filter (3) is disposed at the liquid inlet (111), and the filter (3) is a porous ceramic filter or a polymeric fiber filter.
7. A flow-through electrochemical device for the production of hydrogen peroxide according to claim 1, wherein the cathode electrode (12) is made of one of nickel foam, porous graphite plate, sintered titanium, activated carbon felt or carbon paper.
8. The flow-through electrochemical device for the production of hydrogen peroxide according to claim 7, wherein the cathode electrode (12) is coated with a cathode catalyst, and the cathode catalyst is one of Pt/C, PtHg4, O-CNTs, graphite oxide, high surface area activated carbon powder, high specific surface area graphite oxide, M-N-C (M ═ Co, Fe, Mn), functionalized carbon powder, and the like.
9. The flow-through electrochemical device for the production of hydrogen peroxide according to claim 1, wherein the surface of the anode electrode (13) is coated or deposited with a water oxidation OER catalyst which is one of NiCoOx, CoFeOx, IrOx/SrIrO3, IrO2, RuO2, FeCoW, NiOx, NiFeOx or solid Pt.
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| CN113621980A (en) * | 2021-09-10 | 2021-11-09 | 浙江清越科技有限公司 | Flow type electrochemical device for preparing hydrogen peroxide |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113621980A (en) * | 2021-09-10 | 2021-11-09 | 浙江清越科技有限公司 | Flow type electrochemical device for preparing hydrogen peroxide |
| CN113621980B (en) * | 2021-09-10 | 2024-01-30 | 浙江清越科技有限公司 | Flow type electrochemical device for preparing hydrogen peroxide |
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