3140 results about "Electrolysed water" patented technology

The invention discloses an operation state monitoring method and system for AEM water electrolysis hydrogen production equipment, particularly relates to the technical field of electrolytic bath operation monitoring control, and aims to solve the problem of efficiency nonlinear fluctuation caused by polarization mode alternating dominance and microstructure degradation under a low current density working condition in the prior art. Extracting polarization fluctuation characteristics by generating a dynamic response sequence and calculating a dynamic coupling degree to identify a polarization alternating dominant mode; analyzing a local blocking probability based on frequency characteristics, positioning an active site sparse region in combination with temperature gradient spatial distribution characteristics, and generating an efficiency fluctuation evaluation coefficient; an active site sparse region and a dynamic compensation factor matrix of a cathode flow field pressure gradient are constructed to cooperatively adjust an anode current density distribution weight and a cathode pressure gradient parameter, so that an adjusting variable is accurately matched with a local blocking probability and a dynamic coupling degree; the multi-scale correlation analysis of the microcosmic degradation state and the macroscopic efficiency fluctuation of the electrolytic cell is realized, and the operation stability under the low current density is remarkably improved.

The invention relates to an optimization method of an alkaline water electrolysis hydrogen production system based on multi-parameter cooperative control. The method comprises the following steps: acquiring real-time power and historical output data of renewable energy sources, environmental parameters and operation data of an electrolytic cell, and preprocessing the real-time power and historical output data, environmental parameters and operation data of the electrolytic cell; constructing a fusion renewable energy fluctuation prediction model, and inputting historical output data, environmental parameters and electrolytic cell operation data into the model to predict renewable energy fluctuation characteristics; establishing a wind-light output prediction model, and determining an optimal current density interval based on the real-time power of the renewable energy and the wind-light output prediction model; correcting the real-time electrolyte concentration by adopting a conductivity-pH dual channel, constructing a concentration-current two-dimensional compensation model, and inputting the corrected real-time electrolyte concentration into the model to obtain a target electrolyte concentration; and dynamically adjusting related parameters of the hydrogen production system, calculating a self-adaptive threshold value of the system, determining a grading response threshold value based on the self-adaptive threshold value, and controlling the hydrogen production system to operate. And high-efficiency hydrogen production and stable operation of the system are realized.

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 provides a water electrolysis hydrogen production monitoring and control method with dynamic fluctuation adaptability, and relates to the technical field of hydrogen production. Comprising the steps that a multi-dimensional operation parameter set of an electrolytic cell is collected in real time through a multi-source sensor array, an electrolysis process prediction model is established based on the LSTM and the CNN neural network, and therefore the prediction result of the electrolysis state is determined. And according to the prediction result, a dynamic parameter adjustment matrix is constructed, and the electrolytic current density, the electrolyte concentration and other key parameters of the electrolytic cell are adjusted for the first time through fuzzy PID control. After adjustment, the multi-dimensional operation parameter set is updated, the health degree index of the electrolytic cell is calculated, and the relation between the index and a preset health index threshold value is monitored in real time. And second-time adjustment is carried out according to the monitoring result, so that safe and efficient operation of the electrolytic cell under the dynamic fluctuation condition is ensured. The problems that in the prior art, an electrolytic cell is slow in response to load change, insufficient in monitoring capacity, dependent on manual maintenance and the like are effectively solved.

The invention relates to the technical field of temperature control, in particular to a temperature control management method and system for an electrolytic water tank and a medium. The method comprises the following steps: performing micro-channel structure processing on a main body shell of the electrolytic water tank, and embedding a modular micro-channel cooling plate to obtain geometric parameters of a cooling channel; identifying a key thermosensitive area of the electrolytic water tank; deploying a flexible micro temperature sensor array in the key thermosensitive area, and constructing a multi-point temperature monitoring network; collecting data in real time based on a multi-point temperature monitoring network to obtain real-time temperature data; and designing a micro-channel cooling liquid flow path based on cooling channel geometric parameter topological optimization to obtain a cooling liquid flow field structure. By integrating the micro-channel cooling structure and the high-density temperature monitoring network, efficient heat exchange and dynamic intelligent regulation and control of the electrolytic water tank cooling system are achieved, and the heat stability, safety and energy utilization efficiency are remarkably improved.

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 solid oxide electrolysis reactor and system for producing hydrogen by coupling electrolytic water with combustible gas, the solid oxide electrolysis reactor comprises an anode end plate, an intermediate plate assembly and a cathode end plate which are connected in sequence, the intermediate plate assembly comprises a plurality of repetitive units, and the repetitive units are connected through connecting plates; the repeating unit comprises an electrolytic tank, the electrolytic tank comprises an anode, an electrolyte and a cathode, water vapor or a water vapor and hydrogen mixed gas is introduced into the cathode to generate an electrolyzed water reduction reaction to obtain hydrogen, and a combustible gas, water vapor and / or carbon dioxide mixed gas is introduced into the anode to generate hydrogen; and the combustible gas and oxygen ions which are generated by electrolyzing water at the cathode and are transmitted to the anode are subjected to deep oxidation reaction to obtain carbon dioxide. The cathode product gas is high-purity hydrogen or high-purity hydrogen obtained after condensation, the anode product gas is mixed gas of water vapor and carbon dioxide or mixed gas mainly comprising water vapor and carbon dioxide, and self-enriched high-concentration carbon dioxide can be obtained after condensation.

The invention discloses a hierarchical optimization scheduling method for an electric power system containing a large-scale water electrolysis hydrogen production device, and relates to the technical field of hierarchical optimization scheduling of the electric power system.A gradient heterogeneous compensation unit fuses covariance alignment and differential privacy encryption, and on the premise that original data does not need to be shared, the optimal scheduling of the electric power system is achieved. The federal learning convergence speed is improved to a practical level; after each hydrogen production station uploads the encryption gradient, a coordinator corrects and eliminates equipment difference interference through statistical distribution, and generates a global consistent frequency modulation strategy, so that commercial sensitive information is protected, and model oscillation failure is avoided; the knowledge distillation unit further compresses the volume of the model to guarantee the real-time response capability of edge nodes, and when the frequency of the power grid changes suddenly, a quick response protocol automatically triggers a dynamic priority distribution mechanism; the regional aggregation layer directly broadcasts a frequency modulation instruction based on a historical performance label, and skips a federated learning iteration process, so that a hydrogen production cluster forms an adjusting resultant force in a second level.

The invention discloses a hydrogen purification pressure optimization system and a control strategy for hydrogen production through electrolysis of water, and relates to the technical field of hydrogen production through electrolysis of water, and the hydrogen purification system comprises a hydrogen purification unit which comprises a plurality of adsorption towers arranged in parallel and is used for adsorbing and removing impurities in hydrogen; the pressure optimization system comprises a pressure sensor, a pressure regulating valve and a controller, the pressure sensor is used for monitoring the pressure in the adsorption tower in real time, the pressure regulating valve regulates the pressure according to an instruction of the controller, and the controller is used for regulating the pressure according to the adsorption characteristics of the adsorbent and the requirements of the hydrogen purification process. Setting pressure control parameters to adjust the pressure in the adsorption tower in real time; and the control unit is used for performing coordinated management on the temperature and the flow of the pressure optimization system, and forming closed-loop feedback regulation of parameters by comparing the actual purity of the purified hydrogen with a preset purity standard. The hydrogen purity is improved, the adsorbent works under the optimal pressure by optimizing the pressure control strategy, the hydrogen purity is effectively improved, and the energy consumption is reduced.

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 modified alkaline electrolytic water hydrogen production diaphragm and a preparation method thereof. The modified diaphragm comprises a base membrane loaded with a Cu < 2 + > complexed chitosan alkali-resistant ion conduction unit, and the Cu < 2 + > complexed chitosan alkali-resistant ion conduction unit is obtained by loading chitosan through the base membrane and soaking in a Cu < 2 + > complexed solution for complexing. By introducing a copper-chitosan complex structure, a stable ionic conduction channel is constructed in an alkaline environment, and the alkali resistance and ionic conductivity of the membrane are effectively improved. According to the modified alkaline diaphragm for hydrogen production by electrolysis of water, the problems of insufficient alkali resistance, limited ion transmission capability and the like of a diaphragm material in the prior art are solved, and a new solution is provided for preparing the diaphragm for hydrogen production by electrolysis of alkaline water with long service life, high efficiency and low cost.

The invention discloses an electrocatalyst for acidic oxygen evolution reaction as well as a preparation method and application of the electrocatalyst, and belongs to the technical field of electrolyzed water. The preparation method of the electrocatalyst for the acidic oxygen evolution reaction comprises the following steps: growing a transition metal oxide on a conductive substrate in situ to obtain a transition metal oxide carrier; the transition metal oxide carrier is subjected to plasma treatment and then placed in a precious metal salt solution for a cation exchange reaction, and the electrocatalyst is obtained. The electrocatalyst prepared by the invention has extremely low initial overpotential (187mV) when a water electrolysis reaction is carried out in a 0.5 M H2SO4 solution, has no obvious performance degradation in a continuous acidic water electrolysis process for 4500h, shows very high operation stability, and has great application potential in the aspects of replacing a commercial RuO2 / IrO2 catalyst and reducing electrode preparation cost and acidic water electrolysis.

The invention relates to a non-noble metal-based self-supporting electrode, a preparation method thereof and application of the non-noble metal-based self-supporting electrode in efficient electrolyzed water. The self-supporting electrode comprises a non-noble metal substrate layer, and a transition layer and a catalytic activity layer which are sequentially arranged on the surface of the non-noble metal substrate layer, the transition layer comprises NiFe unit cell nano particles; the catalytic activity layer comprises CoFeLDH, and the CoFeLDH is of a cactus spherical structure formed by a nano needle-shaped array; and a heterojunction interface is arranged between the transition layer containing the NiFe unit cell nanoparticles and the catalytic activity layer containing the CoFeLDH. The catalyst has low oxygen evolution overpotential and has high current density and excellent stability under the working condition, the transition layer is constructed between the catalytic active layer and the foamed nickel substrate, interface contact between the catalytic active layer and the substrate can be optimized, more uniform stress distribution and better interface adhesion can be achieved, charge transfer and mass transfer are enhanced, and the catalytic activity of the catalyst is improved. Therefore, the electrode interface stability is realized.

The invention provides a fault diagnosis method and system for a water electrolysis hydrogen production system based on a graph neural network, and belongs to the technical field of water electrolysis hydrogen production, and the method comprises the steps: obtaining key operation parameters of the water electrolysis hydrogen production system; constructing a time-varying dynamic adjacency matrix based on the key operation parameters, wherein the time-varying dynamic adjacency matrix is obtained by weighting and fusing physical topological structure data and multivariate time sequence data through arbitration parameters; inputting the multivariate time sequence data into a time feature extraction module, and extracting time dependent features; inputting the dynamic adjacency matrix into spatial feature extraction module spatial dependency features based on the time dependency features; fusing the time dependency feature and the spatial dependency feature by adopting a time-space gating fusion mechanism to obtain a fused spatial-temporal feature; and a fault classification module is adopted to identify whether the water electrolysis hydrogen production system has a fault and a fault type based on the fusion features. The diagnosis method is high in accuracy and fast in response.

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.

The invention discloses a frequency regulation and control method and device for a water electrolysis hydrogen production system based on multi-energy cooperation, and relates to the technical field of automation of water electrolysis hydrogen production systems. The method aims to solve the problems that traditional regulation depends on a fixed threshold value or artificial experience, is difficult to adapt to multi-energy power grid frequency change, lacks system comprehensive monitoring and multi-index collaborative optimization and is difficult to regulate under renewable energy fluctuation. On the basis of multi-source data real-time monitoring and frequency characteristic analysis, the water electrolysis hydrogen production system can dynamically respond to power grid frequency fluctuation, equipment operation parameters are optimized through a self-adaptive regulation and control strategy, the influence of frequency disturbance on the hydrogen production process is effectively restrained, the cooperative compatibility of the water electrolysis hydrogen production system and a power grid is enhanced, and the hydrogen production efficiency is improved. Multi-index evaluation is carried out on the regulation and control strategy by means of a simulation model, so that efficient consumption of renewable energy sources and optimal control of energy consumption cost are realized; in combination with an edge calculation and prediction model, data acquisition frequency dynamic adjustment, abnormity early warning and strategy autonomous optimization are realized.

The invention relates to the technical field of water electrolysis hydrogen production, in particular to a closed modular electrolytic cell for water electrolysis hydrogen production, which comprises an electrolytic hydrogen production cell, a partition structure, an electrolysis module and a second lifting structure, the electrolytic hydrogen production tank comprises a tank body and a cover body; the partition structure comprises an ion diaphragm, and the ion diaphragm divides the internal space of the tank body into a cathode chamber and an anode chamber; the electrolysis module comprises a hoisting plate, an electrolysis piece assembly, a plurality of clamping structures and a first lifting structure, the lower end of the hoisting plate abuts against the upper end of the ion diaphragm, the electrolysis piece assembly comprises a plurality of cathode pieces and a plurality of anode pieces, the clamping structures are arranged on the hoisting plate, and the first lifting structure is arranged between the cathode pieces and the anode pieces. The clamping structure clamps the cathode plate and the anode plate on the hoisting plate, and the first lifting structure is used for changing the height of the hoisting plate in the tank body; the second lifting structure is used for opening and closing the tank body and the cover body; according to the invention, the hoisting plate, the electrolytic sheet assembly, the clamping structure and the first lifting structure are arranged, so that the electrolysis efficiency is maintained.

The invention relates to the technical field of water electrolysis hydrogen production, and discloses an electrolytic bath outlet temperature control method and system, a medium and a program product, a flow control valve is arranged at an inlet of an electrolytic bath, the electrolyte input flow is converted into a core regulation variable directly influencing the outlet temperature, and active control over the outlet temperature is achieved. Furthermore, the flow control valve is directly connected with the control device, the opening degree signal can be received in real time, the flow can be adjusted, it is ensured that the temperature control instruction can be rapidly converted into the actual flow change, and the response speed to power fluctuation is increased. Furthermore, through a real-time operation state parameter set and a real-time temperature monitoring parameter set, it is ensured that a control signal is generated based on a real working condition, and the temperature control stability under fluctuating power is improved. Furthermore, through the synergistic effect of an electrolyte flow feedforward control signal and an electrolyte flow rear-end control signal, frequent current change caused by wind-solar power fluctuation can be effectively handled, and the fluctuation amplitude of the outlet temperature is reduced.

The invention discloses a water electrolysis hydrogen production anion exchange membrane electrolytic bath which comprises a bath body, an alkali corrosion resisting anode electrode, an alkali corrosion resisting cathode electrode, an anion exchange membrane and a driving mechanism, the alkali corrosion resisting anode electrode, the alkali corrosion resisting cathode electrode, the anion exchange membrane and the driving mechanism are arranged in the bath body, and the driving mechanism comprises a double-shaft motor, a swing assembly and a reciprocating motion assembly. Wherein the swing assembly realizes the swing of the alkali-corrosion-resistant anode electrode, and the reciprocating motion assembly realizes the reciprocating motion of the alkali-corrosion-resistant cathode electrode. According to the application, the double-shaft motor drives the swing assembly and the reciprocating motion assembly to operate simultaneously, so that the alkali corrosion resisting anode electrode swings, the alkali corrosion resisting cathode electrode reciprocates, electrolyte near the electrodes flows and is disturbed, and the dynamic change breaks a concentration boundary layer of the electrolyte near the surfaces of the electrodes; the migration of ions in the electrolyte to the surface of the electrode and the diffusion of reaction products from the surface of the electrode are accelerated, so that the mass transfer rate is improved, and the electrolytic reaction can be carried out more efficiently.

The invention discloses a water electrolysis hydrogen production electric pile performance evaluation method, and relates to the field of electric pile performance evaluation, and the method comprises the steps: S1, collecting operation parameters through a sensor system, carrying out preprocessing and time sequence alignment, and constructing a real-time data set; s2, according to the real-time data set and historical data, a stack health index is calculated through multi-layer feature hierarchical fusion and a machine learning model; s3, on the basis of the real-time data set, calculating a composite evaluation index parameter containing a safety margin factor and a performance degradation rate; s4, on the basis of the stack health index, analyzing in combination with the composite evaluation index parameters, and determining the stack performance state grade; and S5, extracting a maintenance suggestion in a preset level and maintenance strategy mapping relation based on the pile performance state level, and transmitting the maintenance suggestion to a visual interface for display through the cloud platform. Through multi-layer feature fusion and machine learning, the method achieves the precise evaluation of the health index of the galvanic pile, dynamically monitors the fault early warning, automatically generates an intelligent maintenance strategy, optimizes the performance, and prolongs the service life of equipment.

The invention belongs to the technical field of electrode preparation, and discloses an alkaline electrolysis water electrode and a preparation method thereof. Comprising the following steps: (1) mixing nickel-based alloy powder and aluminum powder to obtain catalyst powder; (2) spraying catalyst powder on the electrode substrate to form a functional layer; (3) carrying out activating treatment on the sprayed electrode substrate; and (4) carrying out heat treatment on the activated electrode substrate to obtain the alkaline electrolysis water electrode. According to the invention, alloying and mechanization are fused, and finally activation and heat treatment are carried out, so that the prepared alkaline electrolysis water electrode has the advantages of catalytic activity, high stability, high energy efficiency and the like.

The invention discloses a preparation method of a proton exchange membrane water electrolysis hydrogen production membrane electrode, and belongs to the technical field of proton exchange membranes, a catalyst carrier is prepared, S101, a polyimide membrane is inversely fixed in a magnetron sputtering vacuum coating chamber, a cavity cover of the magnetron sputtering vacuum coating chamber is closed, vacuumizing is performed, and a substrate is heated; and S102, argon is introduced into a cavity of the magnetron sputtering vacuum coating chamber, coating is started, the power of the bismuth metal target is set to be 0.2-0.5 kW, and the deposition time is 60-1800 s. In the invention, the physical vapor deposition method is utilized to load the catalyst on the surface of the metal oxide carrier with high specific surface area and ordered nanostructure, so that the exposure of active sites of the catalyst is increased, the dosage of the noble metal catalyst is reduced, and the bonding strength between the catalyst and the carrier is enhanced; the catalyst is not easy to separate from the surface of the carrier, and large-scale slurry agglomeration is avoided.

The utility model provides a compound device for providing feed gas for preparing green ammonia from new energy and a green ammonia synthesis system. The composite device comprises a deep cooling air separation nitrogen generation subsystem, a hydrogen supply subsystem and a main heat exchanger, and the hydrogen supply subsystem comprises a water electrolysis hydrogen generation unit, a first hydrogen compressor, a second hydrogen compressor, a hydrogen storage tank and a hydrogen conveying pipeline. The hydrogen conveying pipeline comprises a first hydrogen conveying pipeline, a second hydrogen conveying pipeline and a third hydrogen conveying pipeline; the main heat exchanger is a multi-channel heat exchanger and comprises a first flowing channel used for flowing of a first medium and a second flowing channel used for flowing of a second medium, the second hydrogen compressor is connected with the hydrogen storage tank through the first flowing channel, and the hydrogen storage tank is connected with the third hydrogen conveying pipeline through the second flowing channel. The composite device provided by the utility model can ensure the supply stability of the raw material hydrogen of the ammonia production subsystem, and solves the technical problem that the hydrogen supply is unstable in the existing green ammonia synthesis process.

The invention provides a renewable energy driven iron-based zero-carbon-emission energy storage power generation system based on iron-oxygen circulation, and belongs to the technical field of renewable energy utilization and power generation, and the renewable energy driven iron-based zero-carbon-emission energy storage power generation system comprises a renewable energy consumption module, an alkaline water electrolysis hydrogen production module, a hydrogen reduction reaction module, a combustion energy supply module and a steam Rankine cycle module; the renewable energy consumption module is used for acquiring and converting renewable energy into electric energy; the alkaline water electrolysis hydrogen production module is used for producing hydrogen by using electric energy; the hydrogen reduction reaction module utilizes hydrogen to carry out reduction reaction to store energy; and the steam Rankine cycle module is used for converting energy released by combustion into electric energy. Based on iron-oxygen circulation and through cooperative operation of the renewable energy consumption module, the alkaline water electrolysis hydrogen production module, the hydrogen reduction reaction module, the combustion energy supply module and the steam Rankine cycle module, efficient consumption of renewable energy, effective storage and conversion of energy and zero-carbon-emission green electricity production are achieved.

The invention relates to an electrolyzed water catalyst and a preparation method and application thereof, the electrolyzed water catalyst is a three-dimensional porous material of elemental iridium and / or iridium oxide, the specific surface area of the electrolyzed water catalyst is greater than or equal to 65 m < 2 > / g, the porosity is greater than or equal to 40%, and the electrolyzed water catalyst has a mesoporous and macroporous structure. The electrolyzed water catalyst disclosed by the invention has a large specific surface area, high porosity and a three-dimensional porous structure of mesopores and macropores, so that the electrolyzed water catalyst has better mass transfer performance and apparent catalytic activity. The three-dimensional porous structure of the catalyst can improve the utilization rate of the iridium element, so that the loading amount of iridium in a membrane electrode is reduced, and the catalyst has excellent stability. The preparation method provided by the invention is simple and convenient, and has relatively high economical efficiency.

The application discloses a kind of water electrolysis hydrogen production rectifier transformer harmonic active inhibition optimization method, comprising the following steps: constructing rectifier circuit, rectifier circuit includes switch tube, the voltage vector and zero vector of switch tube output are combined, and combined output voltage vector is obtained;The harmonic amplitude is obtained by processing combined output voltage vector, Levy tangent flight strategy and confidence domain variation strategy are introduced in black-winged kite optimization algorithm to construct improved dynamic search algorithm, the total harmonic distortion is obtained by iterative calculation of harmonic amplitude by improved dynamic search algorithm, i.e. optimal switch tube combination, the switch tube of rectifier circuit is adjusted by optimal switch tube combination, and the total harmonic distortion of rectifier circuit is reduced.The optimal switch tube combination of rectifier circuit is iteratively calculated by improved dynamic search algorithm in the application, effectively reduces resource consumption, and processing speed is accelerated, and the efficiency and accuracy of electrolytic water hydrogen production rectifier are improved.

The present invention discloses a Ni‑Se‑C hydrogen evolution electrode and a preparation method thereof, belonging to the technical field of electrocatalytic hydrogen evolution. The Ni‑Se‑C hydrogen evolution electrode is composed of a conductive substrate and a Ni‑Se‑C coating electroplated on the surface of the conductive substrate. First, the conductive substrate is pretreated in the present invention; then, Ni, Se, and C elements are deposited on the pretreated conductive substrate by electroplating to form a Ni‑Se‑C hydrogen evolution electrode with excellent hydrogen evolution performance. The synthesis method of the present invention is simple and the catalytic layer structure is stable. The synthesized Ni‑Se‑C hydrogen evolution electrode can be widely applied to the industrial production of hydrogen by electrolyzing water, and has significant practical value and economic value.

The novel separator comprises a vertical tank body and a cooling pipe assembly, the cooling pipe assembly is arranged on the upper portion of the interior of the vertical tank body, a silk screen drop catching assembly is arranged above the cooling pipe assembly, and the silk screen drop catching assembly comprises an upper cover, a supporting sleeve, multiple layers of silk screens and a fixed partition plate. The supporting sleeve is sleeved on the multilayer silk screen, the upper cover is arranged at the top of the multilayer silk screen, a gap is arranged between the upper cover and the supporting sleeve, the supporting sleeve is fixed on the inner wall of the vertical tank body through a fixed partition plate, an exhaust port is arranged at the upper end of the vertical tank body, a pipeline of the exhaust port extends into the vertical tank body, and a steam filter is arranged at the lower end of the pipeline of the exhaust port. The mixed volume is primarily separated through gravity settling, liquid descends and is stored at the bottom of the tank body, gas ascends and sequentially flows through the cooling pipe assembly to be cooled and the silk screen drop catching assembly to be dewatered, finally, the gas is discharged after passing through the gas filter, and finally, gas separation, cooling and dewatering of high-temperature gas-liquid components are achieved.

The invention relates to a preparation method of a high-performance catalytic electrode material for hydrogen production by electrolysis of water and the catalytic electrode material.The preparation method comprises the steps that firstly, a conductive substrate is pretreated to remove impurities, and then an electroplating solution containing a nickel source, a pore forming agent, an iron source and a cerium source is prepared; during electro-deposition, a one-step deposition method takes a pretreated nickel net as a cathode and a nickel rod as an anode, and constant voltage of 1V-10V is applied for 5-30 minutes at the temperature of 20-60 DEG C; according to the two-step deposition method, a nickel-iron electrode substrate is prepared on a nickel net substrate, and then nickel-iron-cerium is deposited. And sintering for 1-30 seconds at the temperature of 600-1000 DEG C in a protective atmosphere after post-treatment to obtain the product. Compared with the prior art, the activity and stability are improved through Ce redox couple and oxygen vacancy, the water electrolysis hydrogen production reaction is accelerated, the method has the advantages of being excellent in performance, flexible in preparation and the like, and powerful support is provided for efficient production of hydrogen energy.

The invention discloses a method for preparing a high-performance AEM water-electrolyzed hydrogen production membrane electrode, which comprises the following steps: respectively preparing an AEM water-electrolyzed hydrogen production anode and an AEM water-electrolyzed hydrogen production membrane cathode, then placing the AEM water-electrolyzed hydrogen production anode and the AEM water-electrolyzed hydrogen production cathode on two sides of an anion exchange membrane, and sealing edges to prepare the AEM water-electrolyzed hydrogen production membrane electrode, the preparation method comprises the following steps: mixing catalyst powder with a solvent to prepare catalyst prefabricated slurry, adding an anion exchange resin solution in batches, adding a hydrophobic binder to prepare catalyst slurry, coating the surface of a hydrophobic modified diffusion layer with the slurry, and finally coating the surface of the diffusion layer with the anion exchange resin solution to prepare the hydrophobic modified diffusion layer. And soaking in an organic solvent, and washing. According to the prepared AEM water electrolysis hydrogen production membrane electrode, on the basis that oxygen bubble retention can be reduced, the stability is improved, and meanwhile the activity of the membrane electrode is improved.