49 results about "Cathode reaction" patented technology

This invention belongs to the field of organic electrochemical synthesis and microchemical technology, and relates to a method for preparing 2-chlorobenzoic acid by electrochemical reduction debromination in a continuous flow microreactor. The method includes: dissolving 3-bromo-2-chlorobenzoic acid, a supporting electrolyte, and a proton source in a polar aprotic solvent to prepare a cathode reaction solution; continuously feeding this solution into the cathode channel of a microchannel electrochemical reactor using a metering pump, while simultaneously pumping the anolyte into the anode channel; connecting a DC power supply and conducting a selective electrochemical debromination reaction under set current density, reaction temperature, and material residence time conditions; and obtaining high-purity 2-chlorobenzoic acid from the outlet material through gas-liquid separation, neutralization, extraction, and recrystallization. This invention combines a continuous flow microreactor with electrochemical debromination technology, significantly enhancing mass and heat transfer, resulting in a shorter reaction time, higher conversion and yield, and the addition of a reducing agent, ease of scale-up, and intrinsic safety, demonstrating promising industrial application prospects.

This invention discloses a nickel oxide-doped manganese dioxide catalyst, its preparation method, and its application. The catalyst is prepared by in-situ growth of nickel oxide-doped manganese dioxide on a carbon felt substrate using a solvothermal method. In the application, the catalyst electrode is used as the anode, and an aromatic compound is dissolved in an acidic solution as the anolyte. A counter electrode is used in the cathode chamber, and an acidic solution is used as the cathode reaction solution. After the reaction, an aromatic aldehyde or aromatic ketone can be obtained through a post-treatment process. The catalyst of this invention has a high surface area and porous structure, which increases the specific surface area of ​​the electrode, providing a large number of reaction sites and active sites for the oxidation of the substrate. In addition, the doping of nickel oxide provides more active sites for manganese dioxide, promoting the formation of intermediates and also promoting the desorption of the aromatic aldehyde product, preventing the formation of aromatic acids due to over-oxidation. Furthermore, the nanorod-like three-dimensional structure of the catalyst is beneficial for mass transfer.

The invention belongs to the technical field of electrocatalytic materials, and particularly relates to an electrocatalyst with a saturated coordination zinc diatom structure, a preparation method and application. Based on the principle that the boiling point of zinc chloride is lower than that of cadmium chloride and the boiling point of elemental cadmium is lower than that of elemental zinc, ZIF-8 serves as a precursor and is heated together with cadmium chloride, Zn in ZIF-8 can be volatilized at high temperature, Zn in ZIF-8 is replaced by cadmium chloride in the high-temperature process, cadmium (II) is reduced into elemental cadmium (Cd) steam by carbon generated by pyrolysis, and the elemental cadmium (Cd) steam leaves a reaction system; and finally, the catalyst (Zn DACs / N-C) with an excellent ORR performance and a zinc diatom structure is synthesized, and is expected to become a catalyst in fuel cell cathode reaction, automobile exhaust removal and organic reaction.

The invention belongs to the technical field of fuel cells, and particularly relates to a high-power closed cathode air-cooled fuel cell metal bipolar plate, an electric pile, a system and a design method.The metal bipolar plate specifically comprises an anode plate, a cooling plate and a cathode plate which are arranged in an upper-layer structure, a middle-layer structure and a lower-layer structure; a plurality of anode runners for anode fuel gas to flow are arranged in the anode plate; a plurality of cathode runners for cathode reaction air to flow are arranged in the cathode plate; a plurality of cooling straight flow channels for cooling gas to flow are formed in the cooling plate; the effects of high power density and low cathode voltage of the fuel cell are achieved by a regionalized metal bipolar plate configuration, and the problems of high parasitic power consumption and the like of an air compressor caused by low power density and large cathode voltage drop of the fuel cell under a high-power working condition in the prior art are effectively solved.

This invention proposes a three-dimensional electrode electrochemical device with descaling function. It is divided into a softening chamber and an oxidation chamber by a partition. The softening chamber contains multiple cylindrical electrode groups. Under the action of an external electric field, the cathode reaction generates a strongly alkaline environment to precipitate scale-forming ions in the water. A gas flushing mechanism and an external programmable DC regulated power supply effectively achieve automatic descaling. The three-dimensional electrode group in the oxidation chamber consists of several anode plates and cathode plates arranged alternately at equal intervals. Insulating baskets filled with particle packing are placed between adjacent electrode plates. Ultrasonic vibrating plates are integrated around the three-dimensional electrode group. A porous sieve plate and aeration pipeline are installed at the bottom of the three-dimensional electrode group. A spray mechanism with rotating nozzles is installed at the top of the oxidation chamber. The combination of the three-dimensional electrode group, ultrasonic assistance, and circulating spray enhances the oxidation efficiency. This invention removes multiple pollutants from water simultaneously and efficiently in a single reactor without the need for external reagents, through a series of electrochemical reactions. It has the advantages of high treatment efficiency, high automation, and small footprint.

The invention belongs to the technical field of seawater pretreatment, and discloses a seawater pretreatment device and a method for pretreating seawater by using the seawater pretreatment device, the device comprises an electrochemical reaction device, the electrochemical reaction device comprises a cathode reaction tank, an anode reaction tank and a barrier for separating the cathode reaction tank from the anode reaction tank; a cathode is arranged in the cathode reaction tank, and an anode is arranged in the anode reaction tank; the cathode has a surface structure and / or surface characteristics that are easy for bubble detachment. The electrochemical reaction device of the seawater pretreatment device effectively inhibits electrode scaling through the design of a cathode structure and regulation and control of reaction parameters, so that long-acting and stable operation of an electrochemical and air flotation coupling process is ensured, the seawater pretreatment device not only undertakes an agent-free seawater softening function, but also shares part of algae removal load, and the seawater pretreatment effect is improved. And the air floatation effect can be enhanced through suspended calcium and magnesium particles and bubbles generated by electrochemical reaction, so that algae and hardness in seawater can be efficiently and synergistically removed.

Disclosed methods relate to producing an aluminum-scandium (Al—Sc) alloy. A method can include providing an electrolyte bath comprising a first portion of at least one of ScF3 or AlF3 and a first portion of at least one of LiF, NaF, or KF; providing a cathode in electrical contact with the electrolyte bath; providing an anode in electrical contact with the electrolyte bath; adding a first portion of Sc2O3 into the electrolyte bath; reacting an aluminum ion with the cathode; applying an electric current to the cathode, thereby reacting a scandium ion with the cathode to produce the Al—Sc alloy.

This invention relates to the fields of environmental engineering and pollution remediation technology, and in particular to a bioelectrochemical system for the remediation and fixation of heavy metal pollution in groundwater and its application. The bioelectrochemical system employs an integrated columnar layered structure simulating vertical seepage of groundwater, comprising, from bottom to top: a groundwater inlet zone, a first transition support layer, an anodic reaction zone, an intermediate isolation layer, and a cathodic reaction zone. Electroactive microorganisms in the anodic zone oxidize organic matter, releasing electrons. These electrons are transferred to the cathode via an external circuit, driving the reduction of heavy metal ions (such as Cr(VI)) to a lower valence state, while pyrite releases Fe. 2+ Biochar promotes precipitation by enhancing fixation through adsorption and electron shuttle. This bioelectrochemical system enables continuous in-situ remediation of groundwater, achieving a Cr(VI) removal rate of up to 92.7%, while simultaneously removing organic matter and nitrogen and phosphorus pollutants. It exhibits stable long-term operation with a low risk of heavy metal re-release, requires no large amounts of chemical reagents or external power supply, and has low operating costs.

This invention relates to an electrolysis system for electrolyzing carbon dioxide, comprising an electrolyzer, a water circuit unit, a gas circuit unit, and an electrical control unit. Its key technical features are: the reaction temperature is below 100°C; the water circuit unit provides water to the electrolyzer as the anode reactant, and separates, collects, or discharges the product oxygen, recycling excess reactant water; the gas circuit unit provides carbon dioxide to the electrolyzer as the cathode reactant, monitors the composition of the product carbon monoxide, separates and collects the product carbon monoxide, and recycles excess reactant carbon dioxide. This invention can efficiently and stably electrolyze carbon dioxide to carbon monoxide, separating water vapor and simultaneously separating and recycling unreacted carbon dioxide. It is easily integrated with downstream Fischer-Tropsch synthesis processes, solving the problems of rapid efficiency decay, unstable system operation, complex product handling, and low coupling with downstream processes in existing carbon dioxide electrolysis to carbon monoxide technology.

The invention discloses a system for repairing underground water by utilizing a microalgae microbial fuel cell, the system comprises an anode module, a cathode module and a pumping module, the anode module comprises an anode reactor, a first electrode and a velvet net, the cathode module comprises a cathode reactor and a second electrode, and the pumping module is connected with the first electrode and the second electrode. The pumping module comprises a first peristaltic pump, a second peristaltic pump and a third peristaltic pump, a first electrode is arranged in the anode reactor, the surface of the first electrode is wrapped with a velvet net, a second electrode is arranged in the cathode reactor, and the first electrode and the second electrode are connected through a metal wire. According to the invention, the microalgae microbial fuel cell is directly placed in the to-be-repaired underground water in situ, so that the remediation efficiency of the underground water is improved by utilizing microalgae microorganisms, and meanwhile, the traditional aeration oxygen supply is replaced by microalgae photosynthesis, so that the power generation performance of the microbial fuel cell is improved, and the energy consumption is reduced; and the process cost of the microbial fuel cell is reduced based on the biochemical characteristics of the microalgae.

The invention discloses a method for correcting a potentiodynamic scanning curve and quantifying the deviation degree based on an attachment layer recessive ohmic resistance influence, and belongs to the technical field of conductive component nondestructive testing. Obtaining an experimental potential-current curve of the to-be-tested component through potentiodynamic scanning; constructing a potentiodynamic scanning equation for comprehensively representing the implicit ohmic resistance influence introduced by a cathode reaction, an anode reaction and a component surface attachment layer; fitting the equation with an experimental curve, and optimizing model parameters to enable the equation to be matched with the experimental curve, so as to extract numerical values of all parameters in the electrokinetic potential scanning equation from a fitting result; substituting the parameters back to a potentiodynamic scanning equation and removing the influence of an attachment layer to obtain a corrected curve and accurately calculating the polarization resistance of the component; and comparing the curves before and after correction so as to peel off the influence of the invisible ohmic resistance brought by the attachment layer on the dynamic potential scanning result. According to the invention, the corrosion condition of the conductive material can be rapidly, accurately and nondestructively evaluated.

The invention provides a closed air-cooled metal bipolar plate, which belongs to the field of fuel cells and comprises a metal cathode plate, a metal anode plate, a support gasket and an air cooling plate. The supporting gaskets and the air cooling plates are welded between the metal cathode plates and the metal anode plates to form three independent cavities of the bipolar plate. The three independent cavities comprise an anode reaction gas cavity, a cooling cavity and a cathode reaction gas cavity; and each chamber is provided with a special flow channel structure, so that reactants and cooling media are uniformly distributed in the respective chambers, and the reaction requirements of the respective chambers are met. Air is adopted as a cooling medium, the special sealing structure is beneficial to keeping the three cavities of the air-cooled bipolar plate mutually independent, the design form of the gas flow channel on the bipolar plate simplifies the complex structure of the traditional closed air-cooled fuel cell bipolar plate, the flow resistance is reduced, the sealing reliability is improved, and meanwhile, the bipolar plate is lighter.

The invention belongs to the technical field of electro-catalysis, and discloses a method and device for preparing ethylene oxide through cathode and anode coupling electro-catalysis, and the method comprises the following steps: obtaining an electrolyte containing hydrogen peroxide in a cathode electrolytic cell; feeding the electrolyte containing hydrogen peroxide into a cathode reaction tank; electrolyte containing potassium hypobromite is obtained in an anode electrolytic cell; feeding the electrolyte containing potassium hypobromite into an anode reaction tank; in a cathode reaction tank, obtaining a reaction solution containing ethylene oxide; feeding the reaction liquid containing ethylene oxide into a reaction liquid flow mixing tank; in an anode reaction tank, obtaining a reaction solution containing a bromoalcohol intermediate; feeding the reaction liquid containing the bromoalcohol intermediate into a reaction liquid flow mixing tank; carrying out saponification reaction on the bromo-alcohol intermediate in the mixed flow tank; and after the saponification reaction is finished, carrying out reduced pressure distillation on the mixed solution to separate out ethylene oxide gas, and respectively feeding the liquid into an external catholyte tank and an external anolyte tank. The method improves the energy utilization rate.

An amide-containing aromatic diamine has the following structural formula: where Ar is a group with an aromatic ring structure. The preparation method includes the following steps: (1) mixing and reacting components including aromatic diamine, p-nitrobenzoic acid, alkyl phosphoric anhydride and polar aprotic organic solvent; (2) adding carboxylic acid and halogen-free quaternary ammonium salt to the product obtained in step (1) to obtain a mixed solution, which is placed in the cathode cell of an H-type electrolytic cell; the anode cell and the cathode cell are separated by a Nafion membrane; adding the same polar aprotic organic solvent and halogen-free organic electrolyte as the cathode cell to the anode cell of the H-type electrolytic cell, and adding a metal ion-free reducing agent; and conducting the reaction by electrolysis; (3) purifying the cathode reaction solution obtained in step (2) by post-treatment to obtain the amide-containing aromatic diamine. The yield, purity and whiteness of the amide-containing aromatic diamine are higher.

The utility model discloses an electrochemical water treatment device for coupling porous titanium black oxidation with cathode oxygen reduction. Comprising a box body, a water inlet, a water inlet storage tank, a porous water distribution plate, a sintered porous titanium black anode, a porous cathode, an overflow water outlet tank, a water outlet, a return pipe, a gas-liquid mixing pump, a gas-liquid mixing main conveying pipe, a gas-liquid mixing conveying branch pipe and a microbubble generator. By adopting the mode, the electrochemical water treatment device for coupling porous titanium black oxidation with cathode oxygen reduction has the advantages that in the electrochemical water treatment process, the oxygen content in wastewater is increased by utilizing microbubble aeration, and the cathode reaction potential can be greatly reduced by utilizing a cathode oxygen reduction reaction to replace a water decomposition hydrogen production reaction; wastewater penetrates through the porous electrode to compress the mass transfer distance of pollutants diffused to the surface of the electrode, so that the overall pollutant degradation capacity of the device is improved, and the water treatment energy consumption of the system is reduced.

The invention discloses a method for electrosynthesizing hydrogen peroxide by coupling anode aldehyde oxidation hydrogen production with cathode oxygen reduction, which comprises the following steps: in an electrosynthesis device provided with an anode reaction chamber and a cathode reaction chamber, adding an alkaline electrolyte containing an aldehyde group substance into an electrolytic tank, and carrying out electrocatalytic oxidation reaction at lower voltage. And electrolyte is introduced into the cathode reaction chamber, oxygen is introduced at the same time, and the reaction of oxygen reduction electrosynthesis of hydrogen peroxide is carried out. The anode reaction chamber and the cathode reaction chamber are separated by a polymer ion exchange membrane, and a fuel cell system capable of outputting electric energy is formed by anode low-potential oxidation and cathode oxygen reduction reaction. According to the invention, a reaction substrate containing an aldehyde group is subjected to high-selectivity and high-yield electrocatalytic oxidation at a low voltage into a carboxylic acid compound with a high additional value and generates hydrogen, the cathode synthesizes hydrogen peroxide through an oxygen reduction reaction, and chemicals with high additional values are generated at both the cathode and the anode of the electrocatalytic device; meanwhile, electric energy can be generated.

The invention relates to a low-impedance electrolysis cell and an electrolysis cell device of a double-layer gas-liquid decoupling runner, the electrolysis cell comprises a cathode reaction electrode, an anode reaction electrode and a diaphragm arranged between the cathode reaction electrode and the anode reaction electrode, and a cathode side porous bipolar plate and an anode side porous bipolar plate are respectively arranged on two sides of the reaction electrodes. One side, deviating from the reaction electrode, of each porous bipolar plate is provided with a sunken concave area through machining, the sides, deviating from the reaction electrode, of the cathode side porous bipolar plate and the anode side porous bipolar plate are further provided with outer side main gas chambers, and pores are formed in the cathode side porous bipolar plate and the anode side porous bipolar plate in a penetrating manner. The bubble discharging efficiency is remarkably improved, the ohmic resistance of an electrolytic reaction area is reduced, and therefore the comprehensive performance of the electrolytic bath is greatly improved, and the service life of the electrolytic bath is greatly prolonged.

The application discloses an integrated system for electrolyte recovery, product separation and CO2 capture in alkaline electrochemical synthesis and a preparation method thereof. The system is provided with an ion separation module (ISM) between an anode and a cathode of an electrolysis system. During the operation of the ERSS system, protons from the anode solution flow into the ISM through a cation exchange membrane (CEM), so that the effluent electrolyte is acidified. K + and the like cations in the ISM flow into the cathode solution through a cathode CEM to balance the OH ‑ produced by the cathode reaction. Compared with a traditional acid-base neutralization recovery separation process (ABNP), the ERSS can save 121.72 dollars and 5.91 GJ of energy per ton of KOH recovered, and is suitable for other alkaline aqueous electrochemical synthesis reactions. Finally, through the integration of technologies, the application can realize the combination of a continuous electrochemical conversion system, a CO2 capture system and an electrochemical recovery separation system (ECS-CCS-ERSS).

The present application relates to a kind of fuel cell single cell anti-overflowing glue structure, single cell structure and cell stack, the single cell anti-overflowing glue structure includes: the anode plate, membrane electrode and cathode plate are stacked in sequence, the side of membrane electrode towards anode plate is equipped with first boss, and first anti-overflowing glue structure is arranged on first boss, the side of membrane electrode towards cathode plate is equipped with second boss, and second anti-overflowing glue structure is arranged on second boss. By setting first boss between anode plate and membrane electrode, second boss between cathode plate and membrane electrode, it can avoid forming seal between first boss and anode reaction cavity, between second boss and cathode reaction cavity in the process of glue injection, by using the first anti-overflowing glue structure proposed in the application at first boss, and the second anti-overflowing glue structure arranged at second boss, can effectively avoid the beneficial effect of sealing glue flowing into first channel or second channel to cause the problem of blockage.

This invention provides a corrosion simulation method for aluminum cathode plates used in zinc electrowinning, comprising: step S1, preparing a simulation electrolyte, wherein the concentration of H2SO4 in the simulation electrolyte is 180 g / L to 300 g / L, and Cl... ‑ The concentration is 400 mg / L~1000 mg / L; Step S2, using an aluminum cathode plate as the cathode, and with a current of 400 A / m 2 ~750A / m 2 The working current is subjected to constant current polarization treatment for 1 to 8 hours, after which the current is disconnected and the plate is left to stand. Step S3 is repeated 6 to 10 times from step S2 until the aluminum cathode plate fails. This invention is based on a high-acid, high-chlorine simulated electrolyte system and controls the cathode reaction kinetics through constant current polarization; and simulates zinc deposition-stripping conditions through periodic energization-open circuit cycles, thereby achieving the technical effect of rapid, repeatable, and multi-dimensional evaluation of the corrosion resistance and service life of aluminum cathode plates.

The application relates to a secondary-chamber salt ionization acid-base treatment equipment based on an electrochemical reaction, which comprises a plurality of mutually-communicating secondary-chamber electrochemical reaction units, each of the secondary-chamber electrochemical reaction units comprises two independent chambers formed by an electrolytic diaphragm, i.e. a cathode reaction chamber and an anode reaction chamber, the cathode reaction chamber is provided with a cathode, and the anode reaction chamber is provided with an anode; the cathode reaction chamber and the anode reaction chamber are both provided with a water inlet on the side wall close to the bottom, for the entry of salt-containing wastewater, and are both provided with a water outlet on the side wall close to the top, for the discharge of the water body after electrolysis; the water outlets of the cathode reaction chambers of the plurality of secondary-chamber electrochemical reaction units are mutually communicated and converge into a lye precipitation tank, and the water outlets of the anode reaction chambers of the plurality of secondary-chamber electrochemical reaction units are mutually communicated and converge into an acid tank. The application has the effect of realizing the resource treatment of the salt-containing wastewater and improving the water treatment efficiency of the salt-containing wastewater and reducing the water treatment cost.

The present application relates to the field of cleaning equipment and purification technology, and specifically relates to a sewage tank electrochemical deodorization module of a cleaning equipment integrated with a tank cover, comprising a shell, the shell being provided with a reaction cavity, a water inlet end, a gas outlet end, an anode assembly and a cathode assembly for generating ozone, and a wire harness, the water inlet end comprising a first water inlet end and a second water inlet end located on both sides of the shell, the anode assembly comprising an anode reaction plate, the cathode assembly comprising a first cathode reaction plate and a second cathode reaction plate located on both sides of the anode reaction plate, and a connecting lug, the first cathode reaction plate and the second cathode reaction plate both being provided with water-permeable holes, and the gas outlet end being located between the first water inlet end and the second water inlet end.The present application provides an electrochemical ozone deodorization module with high integration, high deodorization efficiency, and safety and reliability.The module can be installed on the sewage tank cover and is fastened with the cover to enter the inside of the sewage tank, ozone is generated in situ by a low-voltage electrochemical method, and the odors and bacteria in the sewage tank are efficiently, actively, and continuously removed.

The application provides a microbial potential sensor and application thereof in water quality early warning. The microbial potential sensor comprises a cathode chamber, a biological anode chamber, one end of the same electrode is arranged in the cathode chamber as a cathode, the other end of the electrode is arranged in the biological anode chamber as an anode, a reference electrode arranged in the cathode chamber, and a preparation method of the microbial potential sensor and a water quality early warning method are provided. The potential is increased through a cathode reaction, the potential is reduced through an anode reaction, and water quality change is represented through the change of the cathode potential.

This invention discloses a lanthanum strontium manganate perovskite-type oxygen electrode material, a solid oxide electrolytic cell, its preparation method, and its application. The oxygen electrode material is a cubic perovskite-type oxide, lanthanum strontium manganate, prepared by a molten salt method, with the general chemical formula La. a Sr b MnO 3‑δ Where a+b=1, and δ represents the non-stoichiometric ratio of oxygen in the material. Compared to the irregularly shaped lanthanum strontium manganate prepared by the sol-gel method, the lanthanum strontium manganate disclosed in this invention exhibits better electrochemical methane oxidative coupling performance. Further, by coating and sintering bismuth oxide or yttrium / sammarium co-doped bismuth oxide onto this electrode, a composite electrode can be obtained. This composite electrode can further improve the selectivity of ethane and ethylene and the methane conversion rate. When carbon dioxide is used as the cathode reactant, this electrode and its composite electrode can significantly reduce the electrolysis potential of carbon dioxide electrolysis through coupling the methane oxidative coupling reaction, and are considered to have good application prospects in the field of solid oxide electrolyzers.

The utility model discloses a fuel cell bipolar plate, which relates to the technical field of fuel cells and comprises a bipolar plate main board, an anode reaction component is arranged on the upper surface of the bipolar plate main board, and a cathode reaction component is arranged on the lower surface of the bipolar plate main board. The anode reaction assembly comprises an anode plate sealing groove, the anode plate sealing groove is formed in the middle of the upper surface of the bipolar plate main plate, an anode plate runner is formed in the inner side of the anode plate sealing groove, a first inlet is formed in the middle of one end of the upper surface of the bipolar plate main plate, and a first outlet is formed in the middle of the other end of the upper surface of the bipolar plate main plate; according to the utility model, fluid and current are effectively and uniformly distributed, so that the reaction efficiency and the reaction stability of the fuel cell are improved, and the use efficiency of the fuel cell is improved.

The utility model relates to the technical field of electrochemistry, in particular to a hypochlorous acid and hydrogen peroxide synergistic electrochemical device which comprises a shell, a liquid inlet and a liquid outlet, the shell is provided with an electrolyte cavity, a cathode reaction assembly, an anode reaction assembly and a spoiler assembly, the electrolyte cavity is communicated with the liquid inlet and the liquid outlet, the cathode reaction assembly and the anode reaction assembly are located in the electrolyte cavity, the spoiler assembly is used for increasing the liquid moving stroke, the cathode reaction assembly is used for generating hydrogen peroxide, and the anode reaction assembly is used for generating hypochlorous acid. The hydrogen peroxide and the hypochlorous acid can be directly generated in the electrolyte chamber through the cathode reaction assembly and the anode reaction assembly respectively, and mixing after respective preparation is not needed, so that the process is simplified, the cost is reduced, the synergy of the hypochlorous acid and the hydrogen peroxide is improved, and the production efficiency is improved. The liquid moving stroke is increased through the spoiler assembly, the mixing effect is effectively improved, and the electrochemical reaction efficiency and uniformity are improved.

The invention discloses a difunctional thiourea-based electrolyte for a zinc-air battery, which takes an alkali metal hydroxide aqueous solution as a substrate and is added with thiourea as a difunctional additive. The cathode reaction path and the anode interface stability of the zinc-air battery are synergistically regulated and controlled through a hydrolysis product of thiourea in an alkaline environment. Wherein the sulfide generated by hydrolysis forms a reversible oxidation-reduction cycle to replace a dynamic slow oxygen evolution reaction, so that the charging overpotential is reduced; and carbonyl-containing molecules generated by hydrolysis and Zn < 2 + > form a coordination compound, so that generation and accumulation of insulating by-products such as ZnO and ZnS are inhibited, and the deposition / stripping process of the zinc anode is stabilized. The zinc air battery based on the electrolyte is obviously superior to a traditional potassium hydroxide electrolyte system. According to the invention, synchronous optimization of the cathode and anode performance is realized, the process is simple, the cost is controllable, and key technical support is provided for large-scale application of the high-performance zinc air battery.

The invention relates to the technical field of cleaning equipment and purification, in particular to a mounting method of an electrochemical deodorization module of a sewage tank of built-in cleaning equipment, which comprises the following steps: S1, an anode assembly and a cathode assembly for generating ozone are arranged in a reaction cavity, and a first cathode reaction plate and a second cathode reaction plate are positioned on two sides of the anode reaction plate; s2, the cover plate covers the first opening, and one end of the anode assembly and one end of the cathode assembly extend into the mounting cavity; s3, respectively connecting the anode assembly and the cathode assembly with the conductive assembly, and adding a sealing element into the mounting cavity; s4, the shell is connected to the bottom of the water tank through the cover plate and operates after being electrically connected. According to the installation method, rapid and accurate assembly can be achieved, the production efficiency is improved, meanwhile, sealing protection of electrical connection can be achieved, and therefore the durability and use safety of the deodorization module are improved.

The invention relates to the technical field of cleaning equipment and purification, in particular to a cleaning equipment sewage tank electrochemical deodorization module integrated on a tank cover, which comprises a shell, the shell is provided with a reaction cavity, a water inlet end, a gas outlet end, an anode assembly, a cathode assembly and a wire harness, the anode assembly and the cathode assembly are used for generating ozone, and the water inlet end comprises a first water inlet end and a second water inlet end which are positioned on two sides of the shell; the anode assembly comprises an anode reaction plate, the cathode assembly comprises a first cathode reaction plate, a second cathode reaction plate and a connecting lug which are located on the two sides of the anode reaction plate, the first cathode reaction plate and the second cathode reaction plate are both provided with water permeable holes, and the air outlet end is located between the first water inlet end and the second water inlet end. The electrochemical ozone deodorization module provided by the invention is high in integration level, high in deodorization efficiency, safe and reliable. The module can be mounted on a sewage tank cover and is buckled with the cover to enter the sewage tank, ozone is generated in situ through a low-voltage electrochemical mode, and efficient, active and continuous removal of peculiar smells and bacteria in the sewage tank is achieved.

The invention discloses a double-sided electro-catalytic membrane for deep nitrogen and carbon removal of sewage as well as a preparation method and application thereof, and relates to the technical field of sewage treatment, the double-sided electro-catalytic membrane is composed of a base membrane material, an electro-catalytic anode surface and an electro-catalytic cathode surface; the base membrane material is at least one of a ceramic membrane, a polyvinylidene fluoride membrane and a polytetrafluoroethylene membrane; the conducting layers of the electro-catalysis anode surface and the electro-catalysis cathode surface are loaded with the base membrane material through suction filtration or electrostatic spinning; the catalyst layers of the electro-catalysis anode surface and the electro-catalysis cathode surface are combined with the conductive layer and the base membrane material through an electrochemical deposition method, an electrostatic spinning method, a sol-gel method, a hydrothermal / solvothermal method and a physical coating / spraying method; according to the double-sided electro-catalysis membrane, through reaction of the coupling anode and the cathode, synchronous removal of carbon and nitrogen pollutants in sewage is effectively achieved, the degradation efficiency of the pollutants is remarkably improved, and the double-sided electro-catalysis membrane has huge potential in practical application of long-term operation of nitrogen and carbon removal of sewage.