174 results about "Metallic hydrogen" patented technology

This high-pressure tank stores, inside a tank body, a mixed gas that contains natural gas and hydrogen, and that contains more than 2% hydrogen by volume. The tank body includes: a cylindrical part extending in a first direction; and a dome part connected to both ends of the cylindrical part in the first direction. The steel material constituting the tank body has a tensile strength TS of 850 MPa or higher, has a structure in which 95% or more by area ratio is tempered martensite, and includes carbides of 100 nm or less scattered in the metal structure as precipitates. The high-pressure tank has a strength of 11250 cycles or more in crack progress analysis, suppresses the influence of hydrogen embrittlement in metal, ensures gas storage capacity, and has a reduced weight.

The invention relates to a hydrogen storage pellet enabling the production of compact, modular, safe and energy-efficient hydrogen reservoirs. The pellet according to the invention comprises a peripheral ring (4) having an outer diameter of expanded natural graphite (ENG) of a determined height, surrounding a wafer of a metal hydride (5) in the form of compacted powder.

The invention belongs to the technical field of hydrogen production, and particularly relates to a double-tank metal hydride hydrogen purification device which comprises a first tank body, a second tank body, a primary exhaust pipe, a gas communicating pipe, a first liquid passing bathroom, a second liquid passing bathroom, a circulating liquid bath chamber and a liquid communicating pipe. A first perforated pipe and a first metal hydride are arranged in the first tank body; and a second perforated pipe and a second metal hydride are arranged in the second tank body. The primary exhaust pipe is communicated with the first perforated pipe, and the gas communication pipe is communicated with the primary exhaust pipe and the second perforated pipe. And the first tank body and the second tank body are coated with the first liquid passing bathroom and the second liquid passing bathroom respectively. And the first liquid passing bathroom, the circulating liquid bath chamber, the second liquid passing bathroom and the liquid communicating pipe are communicated in sequence to form a liquid pipeline. Through the design of the circulating liquid bath chamber and the liquid communicating pipe, the hydrogen absorption and heat release process and the hydrogen desorption and heat absorption process are mutually compensated, the heat utilization efficiency is improved, the external heating and cooling requirements are reduced, and the energy consumption in the hydrogen purification process is reduced.

The invention relates to the technical field of hydrogen energy solid hydrogen storage, and discloses a metal hydride hydrogen storage tank and a circulating hydrogen charging and discharging method.The metal hydride hydrogen storage tank comprises a tank body, the top end of the tank body is communicated with a gas inlet pipe, and the bottom end of the gas inlet pipe extends into the tank body and is rotationally provided with a connecting pipe through a rotating connector; a plurality of circular heat dissipation fins are fixedly connected between the inner walls of the tank body, the bottom end of the connecting pipe penetrates through the heat dissipation fins to be rotationally connected with the bottom end of the tank body, and a plurality of air holes are formed in the surface of each heat dissipation fin; four telescopic rods are fixedly connected to the top wall of the interior of the tank body, the hydrogen storage tank drives the transmission assembly to drive the connecting pipe and the stirring plate to rotate through movement of the piston, metal hydride is prevented from caking, hydrogen is dispersed more evenly through inclined air outlet holes, and the hydrogen storage efficiency is improved; the circular heat dissipation fins are provided with air holes, so that heat dissipation is achieved, and circulation of hydrogen is not blocked.

According to the metal hydride hydrogen compression device for the laboratory and the using method, in the scheme, when hydrogen filling is needed, an external hydrogen cylinder is connected with a hydrogen inlet connector, and hydrogen enters a booster jar through a one-way valve, the third end of a first three-way valve and a second three-way valve; a pressure sensor at the second three-way valve is used for detecting the pressure of gas in the pressurizing tank, hydrogen is absorbed by the hydrogen storage alloy powder after entering the pressurizing tank, and hydrogen filling of the device is completed; when the pressurizing tank needs to release hydrogen, the pressurizing tank is heated through the heating sleeve, the hydrogen storage alloy powder can release hydrogen, after the temperature and pressure in the pressurizing tank reach certain numerical values, the ball valve is opened, the hydrogen is connected with an external buffer tank through the second three-way valve, the second end of the first three-way valve and the hydrogen outlet connector, and hydrogen release of the device is completed.

A device for compressing a medium is equipped with a compressor unit (2) for compressing a drive medium and with a pressure intensifier (13) operatively connected to the compressor unit, in which a drive piston (15) driven by the drive medium and a high-pressure piston (18a, 18b) cooperating with the drive piston (15) for compressing the medium to be compressed is arranged. According to the invention, hydrogen is used as the drive medium, and the compressor unit (2) comprises a hydrogen storage system (3a, 3b) which has a pressure vessel (4a, 4b) equipped with a metal hydride storage medium (7a, 7b) with at least one supply line (5a, 5b, 6a, 6b) for supplying and / or removing hydrogen into or from the pressure vessel (4a, 4b) and a heating device (8a, 8b) for heating the metal hydride storage medium (7a, 7b) in the pressure vessel (4a, 4b).

The invention provides a multi-gas mixed supply type metal hydride hydrogen storage PCT testing device and method, and belongs to the technical field of hydrogen storage material performance detection. In the device, a hydrogen source and a carbon monoxide gas source in a gas mixed supply system respectively pass through a pressure reducing valve and a mass flow controller corresponding to the hydrogen source and the carbon monoxide gas source, and then pass through a first valve, a deoxidizing agent device and a dehydrating agent device to be connected with a main pipeline; the argon source is connected into the main pipeline through the pressure reducing valve and the second valve and used for calibrating the volume; the large gas supply tank is connected into the main pipeline through a third valve, and the small gas supply tank is connected into the main pipeline through a quick connector and a fourth valve; the vacuum pump is connected to the main pipeline through a fifth valve; a hydrogen storage alloy is placed in the sample chamber which is connected with the main pipeline through a sixth valve; a temperature control device is arranged outside the sample chamber; and the monitoring and control system is used for detecting and recording the gas pressure change and controlling and monitoring the temperature of the sample chamber. The device can accurately evaluate the hydrogen storage performance change of the hydrogen storage alloy under different poisoning conditions.

The invention discloses a solid hydrogen storage and fuel cell energy coupling system and method, and belongs to the technical field of fuel cells, the system comprises a solid hydrogen storage module, a combustion cell, a hydrogen storage pipeline, a hydrogen delivery pipeline and a circulation pipeline, the hydrogen storage pipeline is used for inputting hydrogen into the solid hydrogen storage module, the hydrogen conveying pipeline is used for conveying hydrogen output by the solid hydrogen storage module to the fuel cell; the solid hydrogen storage module comprises a plurality of reactors, each reactor is of a double-layer structure composed of a first cavity and a second cavity, the first cavity is filled with a metal hydride bed and a heat exchange pipe penetrating through the metal hydride bed, and first heat exchange fins distributed in the metal hydride bed are installed on the heat exchange pipe; a phase-change material and spiral second heat exchange fins distributed in the phase-change material are arranged in the second cavity; each heat exchange pipe is connected into a circulating pipeline penetrating through the fuel cell, and a circulating medium circularly flowing in the circulating pipeline transfers heat generated by power generation of the fuel cell into the metal hydride bed to promote hydrogen release.

The invention provides a multifunctional detection device and method for a hydrogen absorption and desorption process of a metal hydride, the multifunctional detection device is used for hydrogen absorption and desorption performance test, internal expansion stress test and external strain test, the multifunctional detection device comprises a stress sensor arranged in a hydrogen storage tank, and the sensing end of the stress sensor is flush with the inner surface of the hydrogen storage tank; the strain gauge is arranged on the periphery of the straight cylinder body between the upper and lower flanges of the hydrogen storage tank; the mass flow meter is arranged in the hydrogen absorption and desorption pipeline; the electric signal acquisition card is electrically connected with the stress sensor and the mass flow meter; the strain gauge is electrically connected with the strain gauges; the device has the following beneficial effects: the device can simultaneously monitor the real stress change process in the tank and the strain change process outside the tank in the hydrogen absorption process and the hydrogen desorption process of the metal hydride in the hydrogen storage tank and test the hydrogen absorption and desorption performance; and an accurate and efficient evaluation method is provided for manufacturing, filling and using safety of the metal hydride hydrogen storage tank.

The invention discloses a hydrogen energy production and production-and-use distributed energy supply system, which relates to the technical field of new energy, and comprises a hydrogen production module which comprises a proton exchange membrane electrolytic tank, an alkaline electrolytic tank and a solid oxide electrolytic tank and runs through a three-mode collaborative architecture, in combination with a light-electricity-heat synergistic catalysis device and a wastewater or industrial tail gas coupling hydrogen production device, the hydrogen storage and safety management module comprises a metal hydride hydrogen storage unit, a metal organic framework material hydrogen storage unit and a liquid organic hydrogen storage unit. According to the invention, multi-source, high-efficiency and low-cost hydrogen production is realized through the hydrogen production module with a three-mode collaborative architecture in combination with light-electricity-heat collaborative catalysis and wastewater / industrial tail gas coupling hydrogen production, and meanwhile, a solid oxide fuel cell and micro gas turbine combined cycle, a hydrogen combustion turbine direct drive and a multi-type energy storage unit in the energy supply module realize multi-source, high-efficiency and low-cost hydrogen production. And in cooperation with waste heat-cold energy gradient utilization, the energy conversion efficiency and the comprehensive energy utilization rate are greatly improved.

The invention provides metal-hydrogen modified porous carbon and a preparation method thereof, a silicon-carbon composite material and a preparation method thereof, and a battery, and the preparation method of the metal-hydrogen modified porous carbon comprises the following steps: mixing an aldehyde compound, a phenolic compound, a metal source and a catalyst, and carrying out heating treatment to prepare modified phenolic resin; carrying out carbonization treatment on the modified phenolic resin to prepare metal-doped porous carbon; mixing the metal-doped porous carbon with a metal hydride reducing agent, and performing reduction treatment to prepare metal-hydrogen modified porous carbon; wherein the mass ratio of metal elements to phenolic compounds in the metal source is (2-5): 100. A proper amount of metal-hydrogen bonds are introduced into the inner surface of a porous carbon pore structure; when the porous carbon is subsequently subjected to silicon deposition, low-temperature, uniform and confined deposition of nano silicon in a porous carbon matrix is facilitated, and the silicon-carbon composite material with low expansion rate and excellent electrochemical performance is prepared.

A gas permeation and leakage rate testing device and method for a non-metallic hydrogen transmission pipe. The device includes: a testing member formed with a testing cavity adapted to placing a to-be-tested pipe, and the testing cavity being formed with a sealed testing chamber after the to-be-tested pipe is placed therein; a calibration chamber selectively communicated with the testing chamber; a first gas-filling assembly selectively communicated with the calibration chamber to be adapted to filling a gas into the calibration chamber to a first set pressure; a measuring unit configured to measure pressures and temperatures in the calibration chamber and the testing chamber, and to calculate a calculated volume of the testing chamber; and a permeation and leakage rate testing unit configured to obtain a pressure change value of the testing chamber in a preset time interval and calculate a gas permeation and leakage rate of the to-be-tested pipe.

The invention discloses a slurry hydrogen storage fuel cell system, which comprises: a hydrogen storage slurry circulation module for storing and circulating a slurry hydrogen storage material; the slurry hydrogen storage material comprises organic liquid and metal hydride; the fuel cell adopts a liquid metal anode; the fuel cell comprises an anode inlet and an anode outlet; a separator for separating the anode discharge; the metal hydride powder feeder is used for supplementing metal hydride powder to the hydrogen storage slurry circulating module; wherein the slurry hydrogen storage material reacts on a liquid metal anode interface to generate electric energy and form organic liquid vapor; and the organic liquid vapor is discharged into the separator from the anode outlet, is separated, is conveyed into the hydrogen storage slurry circulating module, and is mixed with the metal hydride powder from the metal hydride powder feeder to form a slurry hydrogen storage material. According to the invention, direct power generation of the slurry hydrogen storage material on the fuel cell anode interface is realized, and the power density of the system is greatly improved.

The present invention relates to the field of distributed energy supply technology, and provides a distributed energy supply system based on solid-gas coupled hydrogen storage and its working method. The photovoltaic panel provides electric energy for users through the first DC / AC converter, and provides electric energy for the electrolyzer through the first DC / DC converter; the electrolyzer generates hydrogen and oxygen, and transmits the hydrogen to the metal hydride solid hydrogen storage device and the hydrogen buffer tank; the metal hydride solid hydrogen storage device and the hydrogen buffer tank interact to supply hydrogen to the proton exchange membrane fuel cell; the proton exchange membrane fuel cell provides electric energy for users through the fourth DC / AC converter; heat exchange is carried out between the metal hydride solid hydrogen storage device and the proton exchange membrane fuel cell through water circulation. The hydrogen supply rate and process stability are improved, the waste heat in the distributed energy supply system is fully recovered and utilized, and the overall efficiency of the distributed energy supply system is improved.

The invention relates to the technical field of electrochemical hydrogen permeation devices, in particular to a thermodynamic coupling electrochemical hydrogen permeation device and a use method thereof.The thermodynamic coupling electrochemical hydrogen permeation device comprises a device body, a sample, an electrochemical workstation, a galvanostat and a data collection unit, and one side face of the sample is plated with nickel; the device body is internally provided with a cavity body, the sample is detachably mounted on the device body, the sample divides the cavity body into a cathode chamber and an anode chamber which are horizontally and oppositely arranged and mutually closed, the cathode chamber contains a 0.1 mol / L hydrogen chloride solution, and when the device is used, the sample is arranged between the cathode chamber and the anode chamber; under the action of a constant-temperature water circulation system, the solution in the anode chamber is circularly heated, then the solution in the cathode chamber is pressurized, so that the solution in the anode chamber is in a constant-temperature state, sample data are measured through an electrochemical workstation and a galvanostat, and the metal hydrogen permeation test at high temperature and high pressure is realized.

The present invention relates to the technical field of metal hydrogen-based smelting, and specifically discloses a hydrogen flash direct reduction process for metal ore powder, which integrates ore powder pretreatment, heating, reduction, separation, cooling, metal smelting, waste heat recovery, and flue gas purification, and realizes functions such as ore powder suspension heating, flash reduction, metal separation, electric furnace smelting, hydrogen preheating, heat recycling, and environmentally friendly emissions. The process flow is highly controllable, the heat energy recycling rate is high, the requirements for raw material quality are low, the processing capacity is large, the mineral processing process and the smelting process can be shortened, and the integrated metal mineral dressing and smelting and the high-efficiency, energy-saving, and environmentally friendly goals of metal hydrogen-based smelting are realized, and significant economic and social benefits are achieved in the field of metal dressing and smelting.

The invention discloses a vortex channel hydrogen storage reactor of a fluid streaming gradual change hydrogen storage tank unit, and belongs to the field of chemical reactor design. The whole reactor is a cylindrical shell, a heat exchange fluid inlet is formed in the center of the upper side of the shell, a hydrogen inlet is formed in a left end shell cover, and a heat exchange fluid outlet is formed in a right end shell cover; the heat exchange fluid channel is in a vortex shape, the multiple hydrogen storage tank units are sequentially arranged in the center of a flow channel of the vortex channel, and the diameter of the hydrogen storage tank is evenly reduced from the shell to the center position. Hydrogen enters the bed layer through a hydrogen pipe in the hydrogen storage tank and reacts with the metal hydride; meanwhile, the heat exchange fluid in the vortex channel flows around the hydrogen storage tank unit in the axial direction for heat exchange and then flows out through an outlet; the hydrogen storage tank has the advantages of excellent heat and mass transfer performance, uniform bed temperature of the hydrogen storage tank, small pressure-bearing stress of the tank body, synchronous reaction process of each hydrogen storage tank, high reliability and long service life, and is suitable for hydrogenation / dehydrogenation reaction of metal hydride with high hydrogen storage capacity requirement and larger reaction heat effect.

A heat exchanger incorporates a metal hydride heat exchanger and mitigates the fluid mixing process, and thus greatly improves the heat transfer efficiency and heat recovery processes. The metal hydride heat exchanger has a container for the metal hydride that has a large aspect ratio. A plurality of high aspect container for the metal hydride may be coupled with a manifold.

The invention provides a structure for strengthening heat transfer in a metal hydride hydrogen storage reactor, and belongs to the technical field of solid hydrogen storage, the structure comprises a hydrogen storage reactor tank body, a hydrogen pipe and a spiral pipe are installed in the hydrogen storage reactor tank body, the spiral pipe comprises a central straight pipe, the central straight pipe is communicated with a spiral branch pipe, and the spiral branch pipe is communicated with the central straight pipe. N inner fins are uniformly distributed and mounted on the central straight pipe in the axial direction, M outer fins are uniformly distributed and mounted on the spiral branch pipes in the axial direction, the hydrogen storage reactor tank body is filled with hydrogen storage alloy, hydrogen enters the hydrogen storage reactor tank body through the hydrogen pipe, and heat exchange fluid enters the hydrogen storage reactor tank body through one end of the spiral pipe. The problems of low heat transfer efficiency caused by insufficient heat exchange area and reaction dynamic unbalance caused by uneven temperature distribution are solved, the heat exchange efficiency is improved through an integrated heat exchange structure, and sufficient heat exchange of heat exchange fluid in the hydrogen storage reactor is ensured by combining the spiral pipe and the inner and outer fins; the energy utilization rate of the heat exchange fluid and the hydrogen storage performance of the hydrogen storage reactor are improved.

The invention discloses an energetic propellant based on magnesium-nickel-based metal hydride blending as well as a preparation method and application of the energetic propellant. The preparation method comprises the following steps: step 1, taking metal Mg and Ni elementary substances as raw materials, and preparing magnesium-nickel-based metal alloy powder by adopting a mechanical alloying method; s2, the magnesium-nickel-based metal alloy powder is subjected to hydrotreating, and magnesium-nickel-based metal hydride is obtained; and S3, the magnesium-nickel-based metal hydride is coated with graphene, mechanical ball milling is conducted, the magnesium-nickel-based metal hydride and a monoaromatic propellant are mixed, and the energetic propellant based on magnesium-nickel-based metal hydride mixing is obtained. The characteristic that metal hydride can release hydrogen in a high-temperature environment is utilized, and the release rate of hydrogen energy is regulated and controlled through the size and the proportion, so that the combustion characteristic of propellant powder and the chamber pressure of an inner trajectory during artillery launching are changed, and finally the kinetic energy of a gun muzzle is improved.

This invention belongs to the field of hydrogen energy technology and provides a metal hydride hydrogen energy storage system and its thermal management method. The metal hydride hydrogen energy storage system includes a fuel cell, a heat exchange fluid circulation system, and multiple parallel-connected metal hydride hydrogen storage devices. The heat exchange fluid circulation system is connected to the multiple parallel-connected metal hydride hydrogen storage devices through the fuel cell. One end of each metal hydride hydrogen storage device is provided with a hydrogen inlet / outlet, a first heat exchange fluid inlet, and a second heat exchange fluid inlet, and the other end is provided with a first heat exchange fluid outlet and a second heat exchange fluid outlet. A hydrogen buffer zone is provided between the hydrogen inlet / outlet and the metal hydride region. The metal hydride hydrogen storage device is filled with metal hydride and also has a through-type inner and outer heat exchange tube bundle. This significantly improves the hydrogen storage / desorption efficiency of the hydrogen storage reactor and shortens the reaction time.

The invention discloses a hydrogen storage and supply system and equipment of a double-temperature type composite metal hydride reactor, the metal hydride reactor adopts expanded graphite and metal hydride to form a porous matrix composite metal hydride module, and the purpose of hydrogen storage and supply is achieved by continuous adsorption and desorption circulation of the porous matrix composite metal hydride module. The hydrogen storing and supplying system comprises a metal hydride hydrogen storing and supplying unit, a temperature control unit, a hydrogen inlet and a hydrogen outlet, and the hydrogen is stored and supplied through the processes of desorption of high-temperature metal hydride, cooling of hydrogen at medium temperature, adsorption of low-temperature metal hydride, desorption of the low-temperature metal hydride and adsorption coupling of the high-temperature metal hydride. Continuous heat and mass circulation is achieved, efficient hydrogen storage and stable hydrogen supply are synchronously achieved, the heat economy of coupling with systems such as a fuel cell while heat and mass continuous transfer is achieved is improved, the limitation of periodical heat utilization of traditional single-stage metal hydrides is broken through, the efficient hydrogen storage and supply advantages of the metal hydrides are brought into full play, and the application prospect is wide. A heat-flow-potential coupling model of the continuous adsorption and desorption process is established, and the rated hydrogen supply requirement of the solid hydrogen source system is met.

The invention relates to the field of metal hydrogenation equipment, and discloses a heat energy management system which comprises a reaction heat management device arranged on a reactor, the reaction heat management device comprises upflow and a reaction heat exchanger, the reactor comprises an air inlet pipe and an air outlet pipe, and the upflow is continuously introduced from the air inlet pipe below the reactor; the gas is discharged from a gas outlet pipe above the reactor; and the reaction heat exchanger is fixed on the outer wall of the reactor and can perform heat management on the reactor. A reaction heat management device is formed by ascending airflow and a reaction heat exchanger, hydrogenation reaction is carried out in a vertically arranged reaction container, metal powder is suspended by the ascending airflow to carry out hydrogenation reaction, and heat energy released in the reaction process is taken away by heat convection of the ascending airflow and the reaction heat exchanger; according to the method, the metal powder is added, local high temperature is avoided, the hydrogenation reaction process is easier to control, the controllability of the hydrogenation reaction is improved, and possibility is provided for continuous hydrogenation of the metal powder.

The application discloses a method for driving metal hydride reversible hydrogen storage by light. The method comprises the following steps: (1) introducing non-active gas into a sealed transparent reactor containing metal hydride powder; (2) applying light to the reactor to remove hydrogen and obtain a dehydrogenation product; (3) hydrogenating the dehydrogenation product in a hydrogen atmosphere to obtain the metal hydride; wherein the metal hydride is selected from at least one of alkali metal hydride, alkaline earth metal hydride and rare earth metal hydride; and the valence of hydrogen in the metal hydride is -1. In the application, the metal hydride can be directly driven by light energy, has high reactivity, and can realize reversible dehydrogenation cycle at normal temperature by using specific hydride, so that the process is simple and suitable for large-scale production.

The invention belongs to the technical field of nuclear reactor cores, and particularly relates to a fast thermal coupling metal hydride reactor core controlled by a rotating drum and a rotating drum control method, and the reactor core comprises the rotating drum, a reactor core active area, a coolant flow channel, a beryllium oxide reflecting layer and a thermal insulation shielding layer; the coolant flow channel is composed of a coolant flow channel inner barrel and a coolant flow channel outer barrel; the reactor core active area is wrapped by the coolant flow channel inner barrel, and oxide fuel rods and metal hydride fuel rods are arranged in the reactor core active area; the beryllium oxide reflecting layer is arranged on the coolant flow channel outer barrel in a sleeving manner, and the heat preservation shielding layer is arranged on the beryllium oxide reflecting layer in a sleeving manner; a plurality of rotating drums are arranged between the beryllium oxide reflecting layer and the heat preservation shielding layer in the circumferential direction. The oxide fuel rods and the metal hydride fuel rods are arranged in the reactor core active area at the same time, so that the fast thermal coupling design of a reactor core neutron energy spectrum is realized, and the reactivity control value of the rotating drum is improved.

A hydrogen fueling system (1) comprising a control system (10), a hydrogen storage unit (2), a cooling system (3), a heating system (4), and a heat transfer fluid circuit interconnecting the hydrogen storage unit (2) to the cooling system (3) and the heating system (4), the hydrogen fueling system configured for receiving hydrogen from a hydrogen source at a first pressure through a hydrogen inlet (11i) and outputting hydrogen at a second pressure higher that the first pressure through a hydrogen outlet (16), the hydrogen storage unit comprising containers lodging therein a metal hydride adapted for hydrogen storage, the cooling system connected to the heat transfer fluid circuit via at least one valve (Vc1, Vc2) and the heating system connected to the heat transfer fluid circuit via at least one valve (Vh1, Vh2). The heating system (4) comprises a thermal energy storage unit (7) including a tank containing a volume of thermal liquid connected to a heating unit (8, 9), the volume of thermal liquid comprising a sensible thermal energy capacity exceeding 80% of a thermal energy required by the hydrogen storage unit to desorb and compress to the second pressure at least 80% of the hydrogen stored in a full hydrogen storage unit (2).

The invention discloses a full-sea-depth metal hydrogen manufacturing device which comprises an upper shell and a lower shell which are assembled together, a water inlet hole communicated with the outside is formed in the upper shell or the lower shell to form an open structure, clamping grooves are correspondingly formed in the upper shell and the lower shell, an anode and a counter electrode are arranged in the clamping grooves in the two sides respectively, and the anode and the counter electrode are arranged in the clamping grooves in the two sides respectively. A bipolar electrode composed of a diaphragm, an anode and a counter electrode is inserted into the middle clamping groove, the anode and the counter electrode are clamped on the two sides of the diaphragm, the anode and the counter electrode are connected through a conductive connecting piece penetrating through the diaphragm, and the connecting piece in the upper shell and the connecting piece in the lower shell are connected with a controller through a watertight cable. The device is of an open structure, the internal and external pressure difference of the device is eliminated, seawater serves as electrolyte, the electrolyte does not need to be carried, and the hydrogen production rate can be adjusted through the controller.

The invention relates to the technical field of metal hydrogenation, and discloses a metal hydride preparation method, which comprises: S1, gas introduction: continuously introducing hydrogen gas with a pressure of 1-6 MPa and a temperature of 50-500 DEG C into a vertical reactor to form an upflow from bottom to top; and S2, hydrogenation: continuously feeding metal powder with the particle size of less than 2000 microns through a feeding pipe, carrying out hydrogenation reaction under the lifting of ascending airflow, discharging the product from an air outlet pipe along with the airflow, and starting a reaction heat exchanger to control the temperature and maintain the temperature required by the reaction. According to the method, metal powder is suspended and dispersed through ascending airflow, gas-solid contact is enhanced, and the reaction efficiency is improved; upflow has the functions of reaction and heat dissipation, reaction heat is timely guided out through convection, and caking or melting caused by local overheating is prevented; by combining temperature regulation and control of the reaction heat exchanger, dynamic heat balance is realized, the reaction stability is effectively guaranteed, the purity and granularity uniformity of the product are remarkably improved, and the method is suitable for continuous and high-quality metal hydride preparation.

The application provides a pressure regulating hydrogen storage device, a pressure regulating hydrogen storage method and a composite hydrogen delivery system, which can deliver hydrogen under pressure for a long time and meet the filling demand of hydrogen for hydrogenation load with large capacity. The pressure regulating hydrogen storage device comprises a hydrogen delivery pipeline, a pressure regulating hydrogen storage unit and a temperature regulating liquid bath unit. The pressure regulating hydrogen storage unit comprises a first pressure regulating hydrogen storage tank group filled with a first metal hydride hydrogen storage material and a second pressure regulating hydrogen storage tank group filled with a second metal hydride hydrogen storage material, which are sequentially connected in series along the hydrogen delivery direction of the hydrogen delivery pipeline. The platform pressure of the first metal hydride hydrogen storage material at room temperature is less than that of the second metal hydride hydrogen storage material at room temperature. The temperature regulating liquid bath unit comprises a first temperature regulating bath chamber containing the first pressure regulating hydrogen storage tank group, a second temperature regulating bath chamber containing the second pressure regulating hydrogen storage tank group and a temperature regulating liquid delivery tank in circulation communication with the first temperature regulating bath chamber and the second temperature regulating bath chamber, respectively.

One embodiment is directed to an integrated energy storage and distribution system, comprising: an electrolysis module configured to utilize intake electricity and intake water to output hydrogen gas, oxygen, and surplus water; a metal hydride hydrogen storage module configured to controllably store, or alternatively release, hydrogen gas; a fuel cell module configured to controllably intake hydrogen gas and output electricity and water vapor; and a computing system operatively coupled to the electrolysis module, storage module, and fuel cell module and configured to coordinate operation of these modules relative to each other; wherein the electrolysis, storage, and fuel cell modules are thermally coupled such that heat energy released from one or more modules which may be at least transiently exothermic may be utilized by one or modules which may be at least transiently endothermic.