69 results about "Electrolysis operation" patented technology

Disclosed herein are components of an electrolysis system and components and methods of operation thereof to improve electrolysis operations. The electrolysis system includes a pulse width modulation control system that adjusts voltage and current applied to an electrolytic cell by modulating a duty cycle of a high frequency waveform. The voltage and current are adjusted based on data provided by one or more feedback loops that monitor performance characteristics of the electrolyzer.

The invention relates to the technical field of air conditioner purification, in particular to an air conditioner water channel purification device, a control method, a control device and an air conditioner. The electrolysis module is used for decomposing condensed water in the water channel so as to generate an active sterilization substance for purifying the water channel; the control method comprises the steps that in response to a water channel cleaning execution request, the quality of condensate water in an air conditioner water channel is detected; determining an electrolysis operation mode of an electrolysis module based on the quality of the condensate water; and the electrolysis module is controlled to work according to the electrolysis operation mode, so that condensate water in the water channel is decomposed, and active sterilization substances used for purifying the water channel are generated. By means of the scheme, the electrolysis module can be controlled to electrolyze condensate water, so that active sterilization substances are generated, lasting self-cleaning of the water channel is achieved, the sterilization effect is improved, efficiency and durability are achieved, no consumables are consumed, and use health of a user is guaranteed.

The invention discloses a preparation method of a porous copper foil based on a hydrogel template and the porous copper fores.The method comprises the steps that firstly, a hydrogel solution is applied to the surface of a cathode roller in a spraying mode, and a hydrogel shielding point array is formed by means of the self-polymerization characteristic of the hydrogel solution; secondly, performing electrolysis operation by taking a cathode roller area outside the shielding point as a deposition site to prepare a composite copper foil mingled with the hydrogel shielding point; and then, stripping the composite copper foil from the cathode roller, placing the composite copper foil in an alkaline solution for ultrasonic treatment for 0.5-5 minutes, so that the hydrogel shielding point is swelled and then falls off through ultrasonic oscillation, and a pure porous copper foil is obtained. And finally, performing surface treatment on the porous copper foil by adopting a passivation solution to improve the stability of the porous copper foil. According to the method, accurate regulation and control of the porous structure are achieved through the hydrogel template, the preparation process is green and efficient, and the obtained porous copper foil is uniform in pore distribution, large in specific surface area and good in mechanical property.

The utility model discloses a molten salt electrolytic furnace for rare earth metal, and belongs to the technical field of molten salt electrolytic furnaces. The molten salt electrolytic furnace for the rare earth metal comprises an electrolytic furnace main body and further comprises a vacuum sealing cover, the vacuum sealing cover is installed above the electrolytic furnace main body, a damping bracket is arranged at the bottom of the electrolytic furnace main body and connected with the electrolytic furnace main body through bolts, an input pipe opening is formed in one side of the electrolytic furnace main body, and an output pipe opening is formed in the other side of the electrolytic furnace main body. The input pipe opening and the electrolytic furnace body are of an integrated structure. In order to solve the problem that the overall power consumption of equipment is increased due to the fact that an additional motor is needed to be involved as driving equipment in the process when a cathode serves as a stirring structure, stirring operation can be achieved due to boiling reaction of electrolyte caused by heating, and the electrolyte in a central area continuously rolls towards the outer side; in the process, electrolysis operation is completed by making contact with the metal cathode, stirring operation can be conducted without the help of additional driving equipment, and power consumption generated when the equipment works is reduced.

The invention relates to the technical field of electric power system analysis, and relates to an electric power system evolution path planning method based on multi-element energy storage collaboration, and the method comprises the steps: obtaining the related data of a multi-element energy storage system, and extracting the dynamic operation voltage, the water electrolysis operation power and the hydrogen flow; according to the dynamic operation voltage, the water electrolysis operation power and the hydrogen flow, a multi-energy energy storage model is built by combining related constraint conditions; constructing a battery energy storage model according to the battery energy balance related parameters; constructing a pumped storage model according to the pumped storage energy balance related parameters; constructing a cost function by taking minimization of power generation cost, new line construction cost and equipment cost as targets; and based on the multi-energy energy storage model, the battery energy storage model, the water pumping energy storage model and the cost function, solving an optimal power system evolution path. The objective of the invention is to realize co-evolution path planning for multi-energy storage, battery energy storage and water pumping energy storage.

The invention belongs to the technical field of hydrogen production by water electrolysis, and discloses a device and a method for hydrogen production by alkaline water electrolysis enhanced by active ions regulated and controlled by a magnetic field. An anode magnetic flow channel and an anode non-magnetic substrate in the electrolytic cell are integrally designed and are combined to form an anode magnetic field functional bipolar plate, and the anode magnetic flow channel is formed. In the electrolysis operation process, the migration behavior and spatial distribution of iron ions dissolved in the electrolyte are actively regulated and controlled by applying an external magnetic field to the anode region, so that the iron ion concentration of the electrolyte phase is not increased, and the main body structure and material system of the existing industrial electrolytic cell are not changed; and the dissolved iron ions are directionally enriched on an anode interface. Through the regulation and control, relatively high dynamic iron active site coverage can be maintained on the surface of the anode, the polarization loss of oxygen evolution reaction is reduced, and the efficiency and stability of the process of hydrogen production by alkaline water electrolysis under the conditions of high current density and wide load operation are improved.

The invention relates to the technical field of electrolysis devices, in particular to a rare earth electrolysis device. Comprising an electrolytic tank and a back frame connected with the electrolytic tank, the back frame is provided with a reciprocating driving module, the reciprocating driving module is in transmission connection with an electrolytic frame capable of moving up and down in a reciprocating mode, the electrolytic frame is rotationally connected with a transposition cylinder, the back frame is provided with a transmission module, the transposition cylinder is driven by the transmission module, and the inner side of the transposition cylinder is provided with a discharging cylinder; a discharging opening is formed in the top of the discharging barrel, and an electrolytic material discharging assembly is installed in the discharging barrel. The device has the beneficial effects that when the device works, on one hand, the replacement contact rate and the electrolysis efficiency of the anode bar and the cathode bar with electrolyte can be effectively improved through the rotary vibration working mode of the anode bar and the cathode bar, and on the other hand, the solution resistance can be effectively reduced through the rotary vibration mode; and in addition, during electrolysis operation, automatic discharging of metal separated out of the cathode bar can be achieved, and then the functionality of the device is effectively improved.

The invention relates to a circuit arrangement (16) for electrically coupling an electrolysis device (12) to a power supply network (14) using an alternating voltage in order to supply the electrolysis device (12) with electrical energy in a normal electrolysis operation, with - an energy source connection (18), - an electrolysis device connection (20), - a separation unit (22) having at least one inverter connection (24), - an inverter (28) having a DC voltage intermediate circuit (26) and an AC voltage connection (30) electrically coupled to the inverter connection (24), - a control unit (32), and - an auxiliary circuit (34) which is designed to charge at least the DC voltage intermediate circuit (26) to a predeterminable electrical DC voltage as a precharging voltage before a change in the switching state of the separating unit (22). According to the invention, the auxiliary circuit (34) is designed to apply a predetermined, suitable protective voltage to the DC voltage intermediate circuit (26) following a change in the switching state of the isolating unit (22) from the switched-on switching state to the switched-off switching state.

The invention discloses equipment for producing ozone by electrolyzing water for household appliances, relates to the field of equipment for producing ozone by electrolyzing water, solves the problem that the existing equipment for producing ozone by electrolyzing water for household appliances is not convenient and efficient enough in use and maintenance process, and comprises a water storage tank, a box body, an electrolysis unit, a deionization unit, a switching driving unit and a regeneration cleaning unit, the water body is electrolyzed through the electrolysis unit to generate ozone, anions and cations in the water body are subjected to deionization operation through the deionization assemblies, and when the output ozone concentration is continuously lower than a set threshold value, the deionization assemblies are controlled to be switched through the switching driving unit; the deionization assembly is self-cleaned through the regeneration cleaning unit, meanwhile, the cleaned deionization assembly is switched to the working state to continue deionization operation, operation is more convenient and efficient, power failure and shutdown are not needed, electrolysis operation can be continuously conducted in the switching process, and self-cleaning of the deionization assembly is synchronously completed.

The invention belongs to the technical field of hydrogen production through water electrolysis, and particularly relates to a method for simulating and researching uniformity of a flow field in an electrolytic bath, which comprises the following steps: introducing water with rated flow into an inlet and outlet end plate; after the bubbles are completely discharged and the water flow is stable, adding a coloring agent into a water source, and recording the diffusion process of colored water flowing from an inlet to an outlet in each flow channel; introducing a hydrogen peroxide solution with a certain concentration into the inlet and outlet end plate; when the hydrogen peroxide solution flows in the runner, the hydrogen peroxide solution is in contact with manganese dioxide dispersed in the catalyst carbon paper to be decomposed, oxygen is separated out on the surface of the carbon paper, and the condition that oxygen is separated out from GDL during electrolysis operation is simulated; after flowing is stable, a coloring agent is added through an inlet connector, and the process that the colored water-gas two-phase flow in each flow channel flows from an inlet to an outlet is recorded. According to the invention, the process of separating oxygen from GDL can be simulated without using a proton exchange membrane and electrifying, and the real condition in the electrolytic cell is reduced.

The invention discloses a method and device for preparing a silver compound from metallic silver. The method mainly comprises the following steps that (1) at least one electrolytic bath is adopted, the metallic silver is taken as an anode, an insoluble conductor is taken as a cathode, the anode is connected with an anode of an electrolytic power source, and the cathode is connected with a cathode of the electrolytic power source; (2) putting an alkaline electrolyte into an electrolytic bath as an electrolyte in contact with the anode; and (3) starting an electrolysis power supply to carry out electrolysis operation, carrying out metal silver dissolution reaction on the anode, and reacting silver ions generated by dissolution in the alkaline electrolyte to generate a solid silver compound and / or a soluble silver complex. According to the invention, the three problems of safety, pollution and cost in the existing production technology for preparing the silver compound are solved.

Disclosed herein are components of an electrolysis system and components and methods of operation thereof to improve electrolysis operations. The electrolysis system includes a pulse width modulation control system that adjusts voltage and current applied to an electrolytic cell by modulating a duty cycle of a high frequency waveform. The voltage and current are adjusted based on data provided by one or more feedback loops that monitor performance characteristics of the electrolyzer.

The application relates to the technical field of ammonium oxidation, and discloses an anode material for ammonium oxidation under a low-concentration chloride ion condition and a preparation method thereof.The anode material takes manganese dioxide as a carrier and is loaded with monatomic silver, and the loading amount of the monatomic silver is less than 0.1 wt%.In the preparation process, first, constant current density electrodeposition is carried out to prepare a MnO2 / platinum-coated titanium mesh; then, a wet chemical immersion method is used to load Ag on the MnO2 substrate; finally, high-temperature air atmosphere calcination is carried out to prepare a monatomic Ag / MnO2 anode material.The application utilizes the acid resistance of MnO2 itself and the strong metal carrier interaction between metal Ag and MnO2 to realize stable and continuous electrolysis operation; and Ag and MnO2 realize the enrichment of low-concentration chloride ions at the anode interface through chemical affinity and physical adsorption, thereby realizing the efficient generation of active chlorine under the condition of low-concentration chloride ions.

The invention relates to the technical field of production of potassium aurous cyanide, and discloses a thermal crystallization process of high-purity potassium aurous cyanide, which comprises the following steps: selecting a gold raw material, rolling to form a gold sheet, and pretreating the gold sheet; adding the pretreated gold platelets into electrolysis equipment, and carrying out electrolysis at preset voltage and current values by taking a potassium cyanide solution as anolyte; after the electrolysis operation is finished, heating and concentrating the filtered anolyte, and removing redundant water to obtain primary crystals; adding pure water, heating to dissolve the primary crystals again, acquiring dissolved state data of the primary crystals, and obtaining a dissolved state value based on the dissolved state data of the primary crystals; the solution with the dissolution state value meeting the requirement is placed in a freezer or a refrigerator to be frozen and drained to remove moisture, then drying is carried out, the high-purity potassium aurous cyanide thermal crystals are obtained, and recognition of the washing quality in the washing process is effectively completed through treatment of the dissolution state value.

The present application relates to the technical field of electrolysis analysis, and particularly relates to an electrolysis analysis method and system for visualizing bubble behavior and cooperatively representing impedance spectrum. The method comprises the following steps: during electrolysis operation, simultaneously starting electrochemical impedance spectrum test and visual observation on the surface of an electrode; obtaining data of electrochemical parameters changing with time in a first time period, and data of bubble behavior changing with time in a total time period, and obtaining data of bubble behavior changing with time in the first time period by intercepting data in a time period corresponding to the first time period from the data of bubble behavior changing with time in the total time period; and then performing correlation analysis on the bubble behavior and the electrochemical parameters. The present application simultaneously performs EIS test and visual experiment, and after time alignment, correlation analysis on the bubble behavior and the electrochemical parameters can be performed, so that the inherent mechanism of the bubble affecting electrolysis is deeply analyzed, the accurate induction factor of electrolysis performance improvement or attenuation is obtained, and operation parameter optimization guidance is provided.

The embodiment of the invention provides a control method and device of clothes processing equipment and the clothes processing equipment. The control method comprises the steps that it is determined that a drying starting instruction or a washing completion instruction is received, water is injected into the barrel assembly under control till at least part of a to-be-treated load in the barrel assembly is immersed, and the water electrolysis device is controlled to execute water electrolysis operation; wherein an oxidation product which is at least partially dissolved in water is generated when the water electrolysis device executes electrolysis operation, and the oxidation product is used for nursing a to-be-treated load. Oxidation decomposition of the odor molecules can be realized by utilizing the oxidation product and the odor molecules to carry out oxidation-reduction reaction, or functional groups which present odor can be destroyed, so that the odor removal and sterilization operations of the to-be-treated load can be better realized by superimposing the existing washing operation or high-temperature drying operation of the to-be-treated load on the basis of the conventional washing operation or high-temperature drying operation of the to-be-treated load.

The invention relates to the field of medical wastewater treatment, in particular to a process for treating medical wastewater based on a micro-electrolysis method, which comprises the following steps: S1, pretreatment including water quality balance and pH regulation; the water quality balancing comprises the following steps: intercepting large-particle impurities in the medical wastewater through a grid, then feeding the medical wastewater into an adjusting tank, adjusting water quality and water quantity, and adjusting suspended matters and high quality; pH regulation comprises the following steps: adding an acid-base regulator to regulate the pH of the medical wastewater to 2-3, and activating the activity of the micro-electrolysis reaction; the acid-base regulator is sulfuric acid; s2, performing micro-electrolysis reaction, including filler selection and micro-electrolysis operation; s3, deep treatment including neutralization flocculation and filtration discharge; s4, resource recovery, including energy recovery and metal resource regeneration. The device has the technical effects of efficient pollutant removal and resource recovery, micro-electrolysis and resource recovery are integrally designed, and the circular economy mode of treating waste with waste is achieved.

The present invention discloses a method for electrochemically promoting the removal of a directing group from a sulfoximine to prepare a sulfoxide derivative. The synthesis method of this strategy is as follows: in a glass reaction vessel, a sulfoximine compound, cyclohexanone oxime, an electrolyte, and a solvent are added, and the mixture is stirred at room temperature and connected to an external DC power supply for electrolysis at a constant current of 6 mA to carry out the reaction. The crude reaction product can be obtained as a sulfoxide compound after separation and purification. The present invention has developed a method for obtaining sulfoxide compounds by electrolyzing sulfoximine compounds under electrochemistry. A series of functionalized sulfoxide derivatives can be constructed through simple electrolysis operations, which has high step economy and operational convenience. In addition, the main advantages of the reaction are that the substrates are simple and easily available, the selectivity is single, the functional group tolerance is good, and the yield is relatively high.

The utility model discloses an electrolysis device for PS (polystyrene) plate production, which comprises an electrolysis box with an opening at the top, an electrolysis mechanism is mounted in the electrolysis box, electrolyte is filled in the electrolysis box, the electrolysis mechanism is matched with the electrolyte for electrolysis operation, four guide wheels are rotatably mounted between the inner wall of the front side and the inner wall of the rear side of the electrolysis box, and the guide wheels are connected with the electrolysis box. The electrolysis mechanism is located among the four guide wheels, and the tops of the two guide wheels located on the upper portion and the bottoms of the two guide wheels located on the lower portion make movable contact with the same PS plate base material. Through the arrangement of a series of structures, the PS plate base material can be brushed, dedusted and collected before electrolysis, the influence of the dust on the electrolysis operation can be effectively reduced, the PS plate base material can be dried after electrolysis, the PS plate base material does not need to be independently dried by personnel, the operation of the personnel is facilitated, and the working efficiency is improved.

Disclosed in the present invention is a method for thiosulfate-based electrochemical leaching-recycling integrated short-process extraction of a precious metal. The method comprises: dissolving a thiosulfate and an electrolyte, then adding an alkali liquor thereto, and stirring same until uniform to obtain an electrolyte solution, wherein the electrolyte is a salt which does not contain a thiosulfate; adjusting the pH value of the electrolyte solution to 7-13, then placing the electrolyte solution and a material containing a precious metal into an electrolytic bath, and performing an electrolysis operation using an electrode system arranged in the electrolytic bath so as to achieve the leaching of the precious metal at an anode and the deposition thereof at a cathode, the voltage of the electrolysis operation being 0.1-3 V; and collecting the elemental precious metal deposited on the cathode. The present invention can achieve both the leaching of a precious metal at an anode and the electrolytic deposition of precious metal ions at a cathode in one reaction device, realizes integrated extraction of a precious metal by means of synchronous leaching and recycling, and has the advantages of high extraction efficiency, a short technological process, low reagent consumption, low energy consumption, no pollution, etc.

The invention provides an anti-oxidation device and method for an aluminum electrolysis carbon anode, particularly relates to the technical field of aluminum electrolysis, and aims to solve the technical problems that the production operation is influenced by an existing optimized electrolytic cell sealing scheme, and the cost of an anode protective paint coating scheme is high and primary aluminum is possibly polluted. The device comprises a protection plate assembly, a fixing assembly and a heat-conducting and electricity-conducting auxiliary layer, the protection plate assembly is used for a corner easily-oxidized area of the anode, the heat-conducting and electricity-conducting auxiliary layer is arranged between the protection plate assembly and the surface of the anode, and the fixing assembly penetrates through the protection plate assembly and the heat-conducting and electricity-conducting auxiliary layer and then is embedded into the anode so as to jointly fix the protection plate assembly and the heat-conducting and electricity-conducting auxiliary layer on the surface of the anode. The device can accurately block air, high temperature and corrosive media in the anode corner area near the fire eye opening of the electrolytic bath to inhibit oxidation loss, is suitable for anodes of different specifications and daily electrolysis operation, and ensures stable conduction and heat dissipation of the anodes.

A water electrolysis device (10) is provided with a bypass flow path (56) through which a water discharge flow path (60) communicates with a water supply flow path (52). In the water electrolysis device (10), when a water electrolysis stack (14) is operated for water electrolysis, at least some of alkaline water (AWO) containing oxygen bubbles that is flowing through the water discharge flow path (60) is returned to a water supply interconnection hole (34) inside the water electrolysis stack (14) through the bypass flow path (56) via the water supply flow path (52) and circulated.

The utility model discloses a sodium hypochlorite generator inlet saline water standby filtering and pipeline device, which comprises U-shaped frames and a filtering assembly, a plurality of U-shaped frames are symmetrically arranged on the inner wall of a salt pond, connecting parts are arranged on the sides of the U-shaped frames, the filtering assembly comprises a fixed frame, limiting parts are symmetrically arranged on one side of the fixed frame, and the bottoms of the limiting parts are connected to inner cavities of the U-shaped frames in a penetrating manner. An intercepting net is arranged on the outer side of the fixing frame, supporting parts are arranged on the opposite sides of the U-shaped frame and located at the bottom of the fixing frame, and a feeding part is arranged at the bottom of the fixing frame; the fixing frame with the intercepting net arranged on the outer side in the filtering assembly is fixed to the U-shaped frame through the limiting part and the supporting part, raw material saline water is introduced into the intercepting net through the feeding part, foreign matter in the raw material saline water is intercepted through the intercepting net, and compared with the mode that a feeding pipeline is directly arranged at the bottom of a salt pond, the filtering effect is better; according to the design, undissolved salt and impurities are prevented from being accumulated due to gravity to block the feeding pipe, and the subsequent electrolysis operation of the salt pond is not influenced.

The invention relates to the field of wastewater treatment, in particular to a treatment method of perovskite precursor synthesis waste liquid. According to the method, the pH value of the strongly acidic perovskite precursor synthesis waste liquid is adjusted to be more than 3, so that the electrode potential of X2 / X-(X = Br <-> / Cl <-> / I <->) is reduced, the elemental halogen in the oxidation state can be reduced and recovered in the subsequent steps, and the recovery is thorough. The method is free of electrolysis, simple to operate and easy to industrialize; the used precipitant soluble lead is low in cost, and meanwhile, the recycled lead halide can be directly used for synthesizing the perovskite precursor, so that the waste of halogen elements is reduced, and the cost is saved.

An energy storage system (TES) converts variable renewable electricity (VRE) to continuous heat at over 1000° C. Intermittent electrical energy heats a solid medium. Heat from the solid medium is delivered continuously on demand. Heat delivery via flowing gas establishes a thermocline which maintains high outlet temperature throughout discharge. The delivered heat which may be used for processes including power generation and cogeneration. In one application, the energy storage system provides higher-temperature heat to a solid oxide electrolysis system to maintain in an electrolysis operating temperature range during operation and nonoperation, thereby increasing the efficiency of the temperature control.

The invention relates to the technical field of electrolytic cells, and provides an electrolytic cell locking mechanism, an electrolytic cell and an assembling method of the electrolytic cell. A second end plate; the locking device is arranged between the first end plate and the second end plate, and the locking device can apply locking force towards the second end plate to the first end plate so as to counteract force causing the first end plate to protrude outwards; by means of the locking device, locking force towards the second end plate can be applied to the first end plate during working, the upward arching tendency of the end plates can be resisted in real time, the end plates are kept in a stable plane state when facing various pressures, it is ensured that electrodes in an electrolytic cell are tightly attached to a proton exchange membrane, resistance is reduced, and the service life of the proton exchange membrane is prolonged. The ion conduction environment is optimized, so that the electrolytic reaction can be carried out more smoothly, and the electrolytic efficiency is remarkably improved; and moreover, the integrity of the sealing structure of the electrolytic bath is further maintained, so that the sealing structure always keeps good sealing performance in long-time electrolysis operation.

A CO2RR and a CO2RR electrochemical cell (2) is provided, comprising a three-phase boundary (14) having: a gaseous CO2 diffused at least partially through a porous cathode (8), a solid catalyst (10) operatively associated with the cathode 8, and a catholyte (12) or membrane (16) in communication with the catalyst (10); a pressure controller (30) adapted to control back pressure within, at or near the three-phase boundary (14); and a reaction product of the CO2RR selected from the group consisting of: hydrocarbon, alcohol, H2 and CO.

The utility model discloses a renewable energy circulating electrolysis hydrogen production machine which comprises a shell, an electrolysis box is embedded in the top end of the shell, a liquid supplementing valve is installed on one side of the top end of the electrolysis box, a machine barrel is installed on one side of the bottom of the electrolysis box, ring boxes are installed at the two ends of the machine barrel, and a rotor iron core is rotationally installed in the machine barrel. According to the utility model, the airflow pressure generated in the electrolytic hydrogen production operation process can be converted and utilized, the electrolysis operation can be realized under the condition of no external energy supply, the energy consumption of the electrolysis operation is greatly saved, the energy consumption is reduced, the energy consumption is reduced, and the production efficiency is improved. According to the hydrogen production device, the hydrogen production work is more energy-saving and environment-friendly, meanwhile, the continuity and stability of the hydrogen production effect are improved, the hydrogen production work can be more flexibly and conveniently carried out, the electrolysis rate can be limited, and the electrolysis efficiency is fully improved while the electrolysis safety is guaranteed.

This application relates to an automatic cleaning system for the shell-breaking hammerhead of an aluminum electrolytic cell, comprising: a shell-breaking hammerhead for performing shell-breaking operations; a detection component for detecting the downward shell-breaking pressure of the hammerhead; the detection component being connected to the hammerhead; a signal conversion component for converting the pressure detection value of the detection component into a cleaning signal; the signal conversion component being connected to the detection component; and a cleaning component for cleaning electrolyte deposits on the hammerhead; the cleaning component being disposed on the hammerhead and connected to the signal conversion component. The automatic cleaning system for the shell-breaking hammerhead of an aluminum electrolytic cell provided by this application eliminates the need for operator inspection of the hammerhead deposits, enabling automatic early detection and removal, thereby avoiding the hazards caused by hammerhead deposits to normal aluminum electrolysis production management and reducing unnecessary labor intensity for electrolysis operators.

The invention provides a PEM water electrolysis anode diffusion layer and a preparation method thereof, and relates to the technical field of PEM water electrolysis. The anode diffusion layer comprises a porous layer and a microporous layer. The porous layer is a titanium dioxide nanofiber support layer, which is prepared by hot pressing and calcining at least two layers of titanium nanofiber layers. The surface of the titanium dioxide nanofiber support layer is prepared with a microporous layer, and the microporous layer comprises platinum black, spherical dehydrogenated titanium powder and a binder. The titanium nanofibers are placed on a hot press in batches for hot pressing, and the mass of the titanium nanofibers added each time gradually increases. The anode diffusion layer of the invention has strong support and toughness, high porosity and uniform pore distribution, and improves the water-gas transmission capacity during water electrolysis operation. PTFE is added to the porous layer, which improves hydrophobicity and is conducive to the conduction of water and gas. The dehydrogenated titanium powder is added to the microporous layer to improve the conductivity of the diffusion layer. The addition of platinum black promotes the progress of the water electrolysis reaction, so that the electrochemical performance of the membrane electrode is significantly improved.