719 results about "Alkaline water electrolysis" patented technology

The invention discloses a one-key starting system and method for an alkaline water electrolysis hydrogen production device, the system comprises a control system and a one-key starting control unit, and the control system is connected with the one-key starting control unit; the one-key start control unit comprises a standby panel soft button, a start panel soft button, a make-up pump selection soft button and a drainage panel soft button; therefore, the whole starting process of the alkaline water electrolysis hydrogen production device is subjected to sequential control integration, a safe and efficient one-key starting scheme with high automation degree is formed, safety risks in the manual starting process are avoided, manpower is saved, the labor cost is reduced, meanwhile, the starting time is shortened, unnecessary energy waste in the starting process is reduced, and the starting efficiency is improved. Therefore, the problems that the starting speed of the cluster electrolytic cell is low and the starting operation difficulty of the cluster electrolytic cell is high due to human factors in a large-scale electrolytic hydrogen production project are solved.

The invention discloses an alkaline electrolytic water hydrogen production diaphragm for strengthening hydroxyl ion transfer and a preparation method of the alkaline electrolytic water hydrogen production diaphragm. The diaphragm comprises a supporting base net and a hydrophilic gas insulation coating which is arranged on the supporting base net and contains a hydroxyl ion transfer carrier, the method comprises the steps that a supporting base net is pretreated; the preparation method comprises the following steps: dissolving a polymer binder, a pore-foaming agent, a hydroxyl ion transfer carrier and a hydrophilic metal oxide in an organic solvent according to a mass ratio to obtain hydrophilic slurry; uniformly coating two sides of a supporting base net with the hydrophilic slurry, and then carrying out non-solvent induced phase conversion to obtain the alkaline electrolytic water hydrogen production diaphragm for strengthening hydroxyl ion transfer; polar groups such as hydroxyl, amino and carboxyl are introduced into a traditional composite diaphragm to construct a hydrogen bond network, so that hydroxyl ions can be transmitted in a jumping manner along the dynamic hydrogen bond network in the diaphragm to promote transmission of the hydroxyl ions, the performance of the diaphragm can be improved, the materials are cheap and easy to obtain, the preparation process is simple and convenient, and industrial expanded production is facilitated.

The invention discloses a device for assembling an electrolytic bath disc spring group and an assembling method thereof, and relates to the technical field of alkaline water electrolysis hydrogen production equipment. The device for assembling the electrolytic bath disc spring set comprises a bearing mechanism and further comprises a tightening mechanism, the bearing mechanism comprises a bearing tray and a holder fixed to the bearing tray, and the holder is located above the holder; the center of the bearing tray is provided with a through hole penetrating up and down, and the tightening mechanism is located below the through hole. The problems that in the prior art, when the electrolytic bath disc spring set is assembled, operation difficulty is large, and potential safety hazards are high are solved, the assembling quality is improved, and the assembling speed is increased.

The invention discloses a preparation method and application of an amorphous nickel-cobalt-iron phosphate anode catalyst, and belongs to the technical field of alkaline water electrolysis hydrogen production, the preparation method comprises the following steps: (1) dissolving transition metal salt in a solvent, and stirring to obtain a metal salt solution; (2) dissolving phosphate in a solvent, and stirring to obtain a phosphate solution; and (3) adding the phosphate solution into the metal salt solution for reaction, washing with deionized water and ethanol, centrifugally separating, and drying to obtain the amorphous nickel-cobalt-iron phosphate anode catalyst. According to the preparation method and application of the amorphous nickel-cobalt-iron phosphate anode catalyst, process safety improvement and environmental friendliness optimization are achieved through an all-water-phase green synthesis system, the obtained catalyst shows excellent performance in an AEM electrolytic cell, the cell voltage is only 1.87 V under the current density of 2 A / cm, and the method has remarkable industrial application prospects.

The invention discloses a hybrid hydrogen production system coupled with photovoltaic renewable energy and an optimal configuration method, and relates to the technical field of new energy utilization and energy storage control, and the hybrid hydrogen production system comprises a photovoltaic power generation unit, an alkaline water electrolytic tank unit, a proton exchange membrane electrolytic tank unit, a hydrogen storage unit, a control unit and the like. Photovoltaic electric energy is directly supplied to the two types of electrolytic cell stacks through the direct current bus, a traditional DC-DC power converter is omitted, and loss in the energy transmission process is reduced; and through a dynamic electrolytic cell switching algorithm configured by the control unit, the input proportion and the number of operation units of the two stacks are changed and adjusted in real time, and the quick response capability and the long-term stability are both considered. The system can stably produce hydrogen under the condition of renewable energy fluctuation, can dynamically adapt to input power change, can realize maximum power point tracking control on the premise of not using extra power conversion equipment, and remarkably reduces initial investment cost and operation energy consumption while ensuring hydrogen production efficiency.

The invention belongs to the technical field of electrocatalyst material preparation, and discloses a long-range disordered localized CoOOH ultrathin nanosheet electrocatalyst as well as a preparation method and application thereof, fluorine-doped cobalt selenide nanobelts prepared by a low-temperature annealing method are used as a base material, and the CoOOH ultrathin nanosheet electrocatalyst is prepared by in-situ reconstruction under an alkaline electrolyzed water anode oxygen evolution reaction condition. In the preparation process of the CoOOH ultrathin nanosheet provided by the invention, lattice cobalt is stabilized in the water electrolysis anode reconstruction process through fluorine ions with strong bonding action with cobalt ions, so that the long-range disordered structure of amorphous CoOOH generated after reconstruction is limited by localization, and the alkaline water electrolysis anode reaction performance is improved. The catalyst has activity and durability obviously superior to those of a commercial ruthenium oxide catalyst in industrial application of anion exchange membrane water electrolysis hydrogen production.

The invention provides a novel adjustable partition type alkaline electrolytic cell technology and a matched electrolysis cell structure, and belongs to the technical field of alkaline water electrolysis hydrogen production. According to the technology, a flow channel of an alkaline water electrolysis device is changed to be four-in and four-out and is divided into four areas, and the flow of each area is independently adjusted; a hydrogen molecule detector is arranged on the gas outlet side, the opening degree of a liquid inlet adjusting valve is controlled according to a detection result, dynamic adjustment is achieved, and flow balance is guaranteed; the small electrolysis chamber comprises a pole frame, a pole plate, a diaphragm and an electrode net, the pole frame is in four-partition design, and a vertical partition plate is added to enhance the rigidity; the pole plate is divided into three phases and the mastoid structure is optimized; the diaphragm is designed in a split manner; the electrode net is optimized according to the polar plate. The process and the structure are optimized, the electrolysis efficiency is improved, the structural safety is enhanced, the energy consumption is reduced, and good application prospects are achieved in the field of hydrogen production through alkaline electrolysis of water.

The invention belongs to the technical field of water electrolysis hydrogen production, and discloses a three-dimensional structure self-supporting electrode and a preparation method and application thereof. The cobalt-molybdenum boride electrode with the three-dimensional structure is prepared by taking foamy copper as a substrate through a cyclic voltammetry / hydrothermal / roasting three-step method. The electrode prepared by the method is applied to alkaline water electrolysis reaction. Wherein the cobalt molybdenum boride electrode is of an urchin-shaped nanosphere structure composed of nanowires, the diameter of nanospheres ranges from 5 microns to 15 mm, and the diameter of the nanowires ranges from 20 nm to 100 nm. The electrode prepared by the method does not need additional binders such as a current collector, Nafion and sugar alcohol, so that the utilization rate of a catalyst on the surface of the electrode is greatly improved; due to the three-dimensional structure of the electrode, sufficient wetting of electrolyte can be guaranteed, and transmission of reactants and products is facilitated; the synergistic effect among the components and the three-dimensional layered porous nano-structure of the electrode can accelerate the decomposition of water. The electrode can be used for preparing a water electrolysis double-effect electrode, a seawater electrolysis double-effect electrode and a carbon dioxide electroreduction reaction anode electrode.

The invention discloses a fault diagnosis method and device for an electrolytic hydrogen production system, a storage medium and computer equipment, relates to the technical field of alkaline water electrolytic hydrogen production, and mainly aims at solving the problems that an existing fault diagnosis method for the alkaline water electrolytic hydrogen production system is poor in diagnosis accuracy, low in efficiency, difficult in fault positioning and high in operation and maintenance cost. Comprising the following steps: acquiring operation parameters of the electrolytic hydrogen production system, and judging the operation state of the electrolytic hydrogen production system based on the operation parameters; acquiring an equipment thermal imaging picture of the electrolytic hydrogen production system in an abnormal state, and performing target recognition processing on the equipment thermal imaging picture to obtain a target equipment thermal imaging picture; and extracting temperature distribution characteristics of the thermal image of the target equipment, and carrying out fault classification processing on the temperature distribution characteristics to obtain a target fault type of the electrolytic hydrogen production system.

The invention relates to the technical field of water electrolysis hydrogen production, and discloses a method and system for evaluating the operation performance of an alkaline water electrolysis hydrogen production device, and the method comprises the steps: 1, deploying a distributed sensor network, collecting the operation data of an electrolytic cell, building a multi-physical field coupling model, and calibrating a model parameter matrix; and step 2, constructing an electrode damage evolution model based on the model parameter matrix, processing acoustic emission signals acquired by the sensor network, extracting crack characteristic parameters, calculating real-time damage degree, and generating graded early warning signals. According to the technical scheme, the distributed sensor network is adopted to collect the multi-physical field data, and the coupling model is established to calibrate the parameter matrix, so that the technical effect of a multi-dimensional parameter dynamic coupling relation is achieved; the defects of large energy efficiency evaluation deviation and low reliability caused by neglecting of multi-field interaction in a traditional method are overcome.

Improved electrocatalysts for promoting a hydrogen evolution reaction (HER) or an oxygen evolution reaction (OER) from alkaline fresh water and seawater are disclosed. By incorporating metals, such as tungsten and rare earth elements, into the nickel molybdenum nitride framework, Ni1-xMoxN, the disclosed electrocatalysts demonstrate improved catalytic activity and stability compared to the original Ni&Ni0.2Mo0.8N catalysts, particularly under high-current alkaline conditions, in water electrolysis for hydrogen and oxygen production.

The invention relates to a composite alkaline ionic membrane as well as a preparation method and application thereof. The composite alkaline ionic membrane is obtained by carrying out anion exchange on a composite membrane consisting of a quaternized anion exchange membrane type polymer and an ion solvated polymer nanofiber membrane, the quaternized anion exchange membrane type polymer is distributed on the surface and in pores of the ion solvated polymer nanofiber membrane, and the quaternized anion exchange membrane type polymer and the ion solvated polymer nanofiber membrane are combined through a covalent bond; the preparation method comprises the following steps: coating the surface of an ion solvated polymer nanofiber membrane with an anion exchange membrane type polymer solution, filling pores in the membrane with the anion exchange membrane type polymer solution, and then sequentially carrying out a cross-linking reaction, a quaternization reaction and an anion exchange reaction to prepare the composite alkaline ionic membrane; the alkaline ionic membrane is applied to alkaline electrolysis of water for hydrogen production, alkaline fuel cells, carbon dioxide conversion or electrochemical synthesis of ammonia. The composite alkaline ionic membrane disclosed by the invention has excellent ionic conductivity and mechanical strength; the preparation method is simple and feasible; the application range is wide.

The invention discloses a supported Ru3 cluster catalyst with accurate atom number for hydrogen evolution from alkaline electrolysis water and a preparation method thereof, and belongs to the technical field of catalyst materials. The Ru3 cluster is loaded on a carrier oxidized carbon nanotube to obtain the alkaline water electrolysis hydrogen evolution loaded Ru3 cluster catalyst with accurate atom number, and the loading capacity of Ru is 0.8-4.3 wt%. The catalyst has good hydrogen evolution reaction catalytic activity under the alkaline condition, the utilization efficiency of Ru atoms is high, and the structure of the catalyst is stable.

The invention provides a cylindrical alkaline water electrolytic bath internally embedded with a spiral band, and belongs to the field of electrolysis. The problem that gas is still accumulated on the surfaces of the cathode electrode and the anode electrode of the alkaline water electrolytic bath is solved. In the structure, a space in a cylindrical tank body is divided into a cathode chamber and an anode chamber by a diaphragm, the anode chamber is close to the center of the cylindrical tank body relative to the cathode chamber, the upper end and the lower end of the cathode chamber are respectively communicated with a cathode gas-liquid outlet and a cathode liquid inlet, and the upper end and the lower end of the anode chamber are respectively communicated with an anode gas-liquid outlet and an anode liquid inlet; the anode electrode is located in the anode chamber, and the cathode electrode is located in the cathode chamber; the spiral band structure comprises a cathode spiral band and an anode spiral band, the two sides of the anode spiral band are in contact with the anode electrode and the diaphragm respectively, the two sides of the cathode spiral band are in contact with the cathode electrode and the diaphragm respectively, the cathode spiral band spirally extends around the outer surface of the diaphragm, and the anode spiral band spirally extends around the outer surface of the anode electrode. And the gas coverage rate of the electrode surface can be reduced.

The invention relates to an integrated experiment table system for measuring electrolytic performance and internal temperature of an alkaline water electrolytic bath. The integrated experiment table system comprises an environment box, the alkaline water electrolytic bath for experiments, a direct-current power supply, a hydrogen side gas-liquid separation bottle, an oxygen side gas-liquid separation bottle, a temperature measuring line, a paperless recorder and a constant-temperature water bath. The alkaline water electrolytic bath for experiments can change flow field design, small chamber scale, heat dissipation and bath body environment temperature control components so as to meet diversified experiment requirements. And the alkali liquor circulating pump is connected with the gas-liquid separation bottle and the electrolytic bath to realize alkali liquor circulation. And the computer terminal is in communication connection with the direct-current power supply, the paperless recorder and the alkali liquor circulating pump and is used for data collection and component control. The hydrogen-side gas-liquid separation bottle and the oxygen-side gas-liquid separation bottle have specific structures for gas-liquid separation and alkali liquor treatment. Compared with the prior art, the experiment table system is easy to disassemble and assemble, stable in operation, capable of decoupling key parameters and obtaining dynamic temperature data in the electrolytic cell, large in freedom degree and capable of guiding industrial hydrogen production strategy making and assisting related research and product research and development of the alkaline water electrolytic cell.

The utility model discloses a runner structure for square alkaline water electrolyzer pole frames, which comprises a first end plate and a second end plate, a plurality of non-communicated square pole frames are sequentially arranged between the first end plate and the second end plate, and communicated square pole frames are arranged among the plurality of non-communicated square pole frames at intervals; a liquid inlet header pipe and a liquid inlet branch pipe are formed in the lower borders of the non-communicating square pole frame and the communicating square pole frame, a first connecting groove penetrating through the liquid inlet header pipe and the liquid inlet branch pipe is further formed in the communicating square pole frame, and air outlet pipelines are arranged on the upper borders of the non-communicating square pole frame and the communicating square pole frame. According to the utility model, the flow in the liquid inlet header pipe can be uniformly fed into the liquid inlet branch pipes in batches, so that the flow velocity of electrolyte is effectively relieved, and the assembly is simple.

The invention discloses a multi-pipeline shunting device for near-zero starting of an alkaline electrolytic cell, and belongs to the technical field of electrolytic cells for hydrogen production through water electrolysis. An alkaline electrolytic cell module is formed by connecting a plurality of small electrolytic chambers which are regularly arranged in parallel, and a small heating device is arranged between any two adjacent small electrolytic chambers; each small electrolysis chamber is provided with a cathode liquid inlet and an anode liquid inlet; and each small electrolysis chamber is provided with a cathode liquid outlet and an anode liquid outlet. Impact of starting current on key components such as electrodes and diaphragms of the electrolytic cell is greatly reduced by applying a multi-pipeline shunting technology, and the service life of the electrolytic cell is prolonged; the lye is conveyed through multiple pipelines simultaneously, and the temperature of the electrolyte is accurately adjusted in a stepped manner by combining small heating devices arranged in the pipelines, so that the electrolytic bath is quickly started. The hydrogen production efficiency can be improved, the unit-position hydrogen production cost is reduced, the overall performance of the alkaline electrolytic cell is improved, and wide application of the alkaline water electrolysis hydrogen production technology is promoted.

The invention discloses a preparation method of a modified polyphenylene sulfide filament fiber diaphragm for an alkaline water electrolysis hydrogen production device, and belongs to the technical field of diaphragm preparation. The preparation method comprises the following steps: modifying polyphenylene sulfide resin by using sulfuric acid (H2SO4), hydrogen peroxide (H2O2) and acetic acid (CH3COOH), then spinning to prepare polyphenylene sulfide modified filament fibers, plying and steaming the modified filament fibers, then weaving into diaphragm base cloth, and then carrying out a hot rolling process to prepare the polyphenylene sulfide modified filament fiber diaphragm. Oxygen is introduced into the modified fiber, so that the hydrophilic performance of the diaphragm is improved, and the surface resistance and the energy consumption are further reduced; the filament fiber improves the mechanical strength of the diaphragm, optimizes the pores and aperture of the diaphragm, and reduces hairiness; the hot rolling process improves the air tightness of the diaphragm and reduces the thickness of the diaphragm, so that the surface resistance is indirectly reduced. The prepared diaphragm is high in strength, free of hairiness, high in porosity, uniform in pore diameter, good in hydrophilicity, low in surface resistance, high in air tightness, good in hot alkali durability, simple and low in cost.

The invention discloses a membrane material for an alkaline system, which is prepared by the following method: introducing hydrophilic micromolecules with double bonds into an inorganic material with alkali-resistant stability, polymerizing the hydrophilic micromolecules with double bonds into alkali-resistant hydrophilic macromolecules in the pore channels of the inorganic material, and then adding the alkali-resistant hydrophilic macromolecules into the inorganic material. The alkali-resistant hydrophilic macromolecule material (represented by the material A) is encapsulated in the alkali-resistant stable inorganic material. Alkali-resistant hydrophilic macromolecules form a continuous hydrogen bond network structure in pore channels of the inorganic material, inlet activation energy of ions at pore openings is reduced, the diffusion rate of the ions in the pore openings is increased, and the ionic conductivity of the material is improved. The composite membrane prepared by blending and compounding the material A and an organic polymer has high ionic conductivity and high ionic selectivity, and has good performance on an alkaline flow battery system and an alkaline water electrolysis hydrogen production device.

The invention relates to a sodium carboxymethyl cellulose modified ultrathin alkaline water electrolysis composite diaphragm as well as a preparation method and application thereof. The alkaline electrolytic water diaphragm provided by the invention not only has excellent hydrophilicity and low surface resistance, but also has high gas barrier property and excellent mechanical property. In addition, the diaphragm is simple in preparation process and low in cost, and has industrial application potential.

The present invention relates to water-insoluble polymer membranes (AEM) on the basis of new side-chain functionalized copolymers and their use as alkaline anion exchange membrane materials, for example in alkaline water electrolyzers, fuel cells or flow batteries.

The invention relates to the field of preparation of diaphragms for hydrogen production through alkaline water electrolysis, and discloses a preparation method of a polyphenylene sulfide filament fiber diaphragm for hydrogen production through an alkaline water electrolysis tank. The preparation method comprises the following steps: melting polyphenylene sulfide resin to prepare filament fibers, carrying out yarn steaming, plying and plied yarn steaming on the filament fibers, weaving the filament fibers into plain weave diaphragm base cloth, and carrying out sulfonation, hot rolling shaping and other processes to prepare the polyphenylene sulfide filament fiber diaphragm. The polyphenylene sulfide filament fiber used in the invention can provide high mechanical strength for the diaphragm, and can optimize the pore structure and aperture of the diaphragm; the hydrophilic performance of the diaphragm can be remarkably improved through sulfonation treatment, so that the surface resistance and the electrolysis energy consumption of the diaphragm are reduced; the hot rolling shaping treatment can improve the air tightness of the diaphragm and reduce the thickness of the diaphragm. Therefore, the prepared diaphragm is high in mechanical strength, free of hairiness, high in porosity, uniform in pore diameter, good in hydrophilicity, low in surface resistance, high in air tightness and good in hot alkali durability, and the preparation method is simple and good in economical efficiency.

The embodiment of the utility model provides an alkaline water electrolysis hydrogen production multi-working-condition testing device, the alkaline water electrolysis hydrogen production multi-working-condition testing device comprises an alkali liquor box, an electrolytic bath, a monitoring assembly and a control assembly, the alkali liquor box is used for storing alkali liquor; the electrolytic bath is communicated with the alkali liquor box and is used for electrolyzing to generate hydrogen; the monitoring assembly comprises a flow meter arranged at the outlet end of the alkali liquor box and a voltage monitor arranged on the electrolytic bath; the control assembly comprises a controller, a variable frequency pump and a regulating valve, the controller is connected with the flow meter and the voltage monitor to obtain the reading of the flow meter and the reading of the voltage monitor, and the variable frequency pump and the regulating valve are electrically connected with the controller; the variable-frequency pump is connected with the alkali liquor tank; the regulating valve is arranged between the alkali liquor tank and the electrolytic bath. The multi-working-condition testing device for hydrogen production by alkaline electrolyzed water provided by the embodiment of the utility model aims at testing electrolysis parameters of alkaline electrolyzed water under various working conditions so as to obtain better working condition parameters, and the reliability and efficiency of hydrogen production by alkaline electrolyzed water are improved.

A composite separator and a preparation method therefor. The composite separator comprises a main film and an anti-contamination layer, which is arranged on one or both surfaces of the main film, wherein the anti-contamination layer comprises a first polymer, a charge agent and / or an anti-fouling agent. The composite separator can be applied to alkaline water electrolysis for hydrogen production and other electrolysis industries, and the anti-contamination layer of the composite separator can effectively prevent impurity species, especially metal ions fallen from a cathode catalyst, from being attached to the surface, which causes the sheet resistance to increase, thereby increasing the electrolytic energy consumption.

The invention relates to the technical field of hydrogen production through alkaline water electrolysis, in particular to a high-performance alkaline water electrolysis composite diaphragm as well as a preparation method and application thereof. The preparation method comprises the following steps: S1, soaking an organic polymer matrix in a swelling solvent to obtain a swelled organic polymer matrix; s2, a swelling solvent is taken to be mixed with the precursor aqueous solution, and functional inorganic matter mother liquor is obtained; and S3, adding the swelled organic polymer matrix in the step S1 into the functional inorganic matter mother liquor in the step S2, standing, carrying out in-situ growth reaction, washing and drying to obtain an organic-inorganic composite diaphragm, namely the high-performance alkaline water electrolysis composite diaphragm. Compared with the prior art, the firmness of the composite diaphragm can be effectively enhanced, the hydrophilicity of the composite diaphragm is improved, the surface resistance of the composite diaphragm is reduced, and the electrolytic performance and the electrolytic stability of the composite diaphragm are enhanced.

The invention relates to an alkaline water electrolysis hydrogen production system and a control method thereof. The alkaline electrolysis water hydrogen production system comprises a gas-liquid separation assembly; an outlet of the alkaline electrolytic bath is communicated with an inlet of the gas-liquid separation assembly; the hot lye tank is communicated with the first outlet of the gas-liquid separation assembly; the first circulating pump is communicated between the gas-liquid separation assembly and the hot lye tank; the first three-way valve is connected to an outlet of the hot lye tank, an outlet of the cold lye tank and a first inlet of the alkaline electrolytic tank; the second circulating pump is communicated between the first three-way valve and the alkaline electrolytic bath; the controller is used for controlling the first three-way valve to be switched to a first working state or a second working state, when the first three-way valve is in the first working state, the outlet of the hot lye tank is communicated with the first inlet of the alkaline electrolytic tank, and when the first three-way valve is in the second working state, the outlet of the hot lye tank is communicated with the second inlet. And the outlet of the cold lye tank is communicated with the first inlet of the alkaline electrolytic tank.

This invention relates to the field of alkaline water electrolysis for hydrogen production, and discloses a water electrolysis hydrogen evolution catalyst, its preparation method, and a method for water electrolysis to produce hydrogen. The catalyst contains Ru, Co, Ni, C, and N; wherein C exists in the catalyst in the form of carbon nanotubes; the Ru content in the catalyst is 0.1-5 wt%, and the average particle size of Ru is 2-5 nm. This invention uses a carbon nanotube composite structure generated by ZIF pyrolysis as a support, which improves the charge transfer capacity by increasing the Ru loading and dispersion. Furthermore, the synergistic effect of Ru with Co and Ni effectively enhances the catalytic hydrogen evolution activity of the Ru-Co-Ni water electrolysis hydrogen evolution catalyst.

The invention discloses an alkaline water electrolysis hydrogen production system, and belongs to the technical field of water electrolysis hydrogen production. For the alkaline water electrolysis hydrogen production system provided with a plurality of electrolytic cells, when the system is in a heating stage, the alkali liquor heater is used for quickly heating the alkali liquor entering the single electrolytic cell, so that the quick cold start of the system can be realized, the start time of the system is greatly shortened, and the energy consumption is reduced. The purposes of greatly improving the operation efficiency, saving energy and reducing consumption under the condition of low energy consumption are achieved. Besides, when the system is in a heat exchange stage, the heating of the rest low-temperature alkali liquor led out from the liquid storage tank is controlled by the heat of the hot alkali liquor of the operated electrolytic bath, so that the requirement of rapid temperature rise of the alkaline water electrolysis hydrogen production system of the plurality of electrolytic baths is met, and the comprehensive energy conservation and consumption reduction of the system are realized.

The invention provides a sealing element of an alkaline water electrolysis device and a preparation method of the sealing element. The method comprises the following steps: S1, adding polytetrafluoroethylene into a solvent, and carrying out first stirring to obtain a first membrane solution; s2, adding an initiator into the first membrane liquid, and performing second stirring to obtain second membrane liquid; s3, adding perfluoropropyl vinyl ether into the second membrane liquid, and performing third stirring to obtain third membrane liquid; s4, adding an inorganic filler into the third membrane solution, and performing fourth stirring to obtain a fourth membrane solution; and S5, the fourth membrane liquid is subjected to tape casting treatment and sintering treatment in sequence, and the alkaline electrolyzed water device sealing element is obtained. According to the invention, polytetrafluoroethylene is used as a base material, perfluoropropyl vinyl ether is introduced to modify the base material, and an inorganic filler is used as an auxiliary material, so that the alkaline water electrolysis device sealing element which has good sealing performance, mechanical strength and creep resistance and also shows excellent strong alkali aging resistance is prepared.

The invention relates to the technical field of anion exchange membranes, in particular to a dual-ion-channel synergistic enhanced conduction anion exchange membrane for alkaline water electrolysis hydrogen production and a preparation method of the dual-ion-channel synergistic enhanced conduction anion exchange membrane for alkaline water electrolysis hydrogen production, and the dual-ion-channel synergistic enhanced conduction anion exchange membrane for alkaline water electrolysis hydrogen production is prepared by blending and crosslinking quaternized polyether-ether-ketone and carboxylated polyether sulfone, the carboxylated polyethersulfone provides a cation channel to form a double-ion synergistic conduction structure; the preparation process of the anion exchange membrane comprises the steps of quaternized polyether-ether-ketone synthesis, carboxylated polyether sulfone synthesis, membrane casting solution preparation, tape casting drying, crosslinking treatment and alkali liquor ion exchange. By constructing a double-ion channel structure, the synergistic conduction of anions and cations is realized, and the total ion conduction efficiency of the membrane is remarkably improved. The two polymer components form a continuously interlaced channel network, so that the defect that the conduction path of the traditional single ion channel membrane is isolated is avoided.