38 results about "Hydrogen desorption" patented technology

The application discloses a kind of catalyst doped magnesium-based hydrogen storage materials and preparation method thereof, belong to hydrogen storage material and its preparation technical field.The application improves the hydrogen absorption and desorption kinetics of existing magnesium-based hydrogen storage material, reduces its hydrogen desorption activation energy, and solves the problem of poor cycle stability.The application uses Cu (NO3) 2·H2O and H3BTC raw materials to prepare catalyst with porous structure, and dopes it in magnesium-based hydrogen storage material by ball milling technology, utilizes the porous structure of catalyst to avoid the agglomeration of active material during hydrogen absorption and desorption process, and the introduced metal can be used as catalytic site to improve the hydrogen absorption and desorption kinetics of magnesium-based hydrogen storage material Mg 85 Ni 10 La 4.5 Y 0.5 Desorption activation energy.

The invention discloses a vehicle-mounted high-mass-density hydrogen storage device and application thereof, tubular reactors are filled with hydrogen storage materials with weak adsorption effects to form tubular hydrogen storage units, and a plurality of tubular reactors are arranged in parallel to form the high-mass-density hydrogen storage device; meanwhile, the tubular reactor serves as a tube pass, an outer shell of the hydrogen storage device serves as a shell pass, a heat exchange medium is guided into the shell pass, so that the hydrogen storage module is located in a set and uniform temperature field, heat management in the hydrogen absorption / desorption process is enhanced, and stable hydrogen storage and supply are achieved. The method effectively reduces the bed temperature difference and the heat management burden by using the high mass density hydrogen storage potential of the weak adsorption effect hydrogen storage material and the characteristic of relatively mild heat effect brought by lower enthalpy change, and reduces the heat and mass transfer resistance of the bed by combining the material forming and filling and heat conduction enhancing modes, thereby improving the heat transfer efficiency. Stable hydrogen storage and supply under low-temperature hydrogen absorption and medium-temperature hydrogen desorption windows are achieved, the structure is compact, modular capacity expansion can be achieved, maintenance is convenient, and the vehicle-mounted hydrogen storage and supply device is suitable for vehicle-mounted hydrogen supply scenes.

The solid hydrogen storage heat management system comprises a thermocline energy storage tank, a solid hydrogen storage tank, a heat pump and a switching valve unit, and the thermocline energy storage tank is provided with a hot water area and a cold water area which are used for storing heat exchange media; the hot solid hydrogen storage tank is communicated with the thermocline energy storage tank and the heat pump through an outer circulation pipeline, the heat pump comprises a first heat exchanger, a second heat exchanger, a third heat exchanger and an inner circulation pipeline unit for flowing refrigerants, and the inner circulation pipeline unit comprises two stages of inner circulation pipelines; the heat pump is selectively started during hydrogen storage or hydrogen desorption according to the temperature of a heat exchange medium heat source or cold source; the switching valve unit is arranged on the outer circulation pipeline and used for switching the flowing path of the heat exchange medium according to the working conditions. According to the solid hydrogen storage thermal management system and the thermal management control method, through the cascade heat pump, the temperature difference of the heat exchange media at the two ends of the heat pump is increased, the response speed for the external temperature is increased, the energy consumption is reduced, and the hydrogen storage or hydrogen desorption efficiency is improved.

The invention discloses a derived carbon coated Mg-Ni-Ce hydrogen storage alloy. The phase composition after activation and carbonization treatment is an Mg phase, an Mg2Ni phase and a CeHx phase; the content of Mg is 80 to 84 wt.%, the content of Ni is 4 to 8 wt.%, the content of Ce is 10 to 14 wt.%, and the content of the PMMA polymer is 1 to 5 wt.%. The preparation method comprises the following steps: 1, preparing a PMMA coated Mg-Ni-Ce alloy precursor; and 2, preparation of the derived carbon coated Mg-Ni-Ce hydrogen storage alloy. When the alloy is used as a hydrogen storage alloy, under the hydrogen condition, the maximum hydrogen absorption amount reaches 5.40-5.60 wt.%, and the hydrogen desorption amount reaches 5.20-5.40 wt.%. After simulated poisoning treatment under the P atmosphere condition, the hydrogen absorption amount reaches 4.60-4.80 wt.%, and the hydrogen desorption amount reaches 4.0-4.20 wt.%.

This invention discloses a method for preparing a Mg-Ni-based hydrogen storage alloy containing rare earth elements, belonging to the technical field of hydrogen storage alloy materials and their preparation. This invention solves the problems of activation and limited hydrogen storage capacity in existing hydrogen storage materials. This invention uses the rare earth element La to modify the Mg-Ni-based hydrogen storage alloy, resulting in a significant improvement in the hydrogen storage performance of the modified Mg-Ni-La hydrogen storage alloy. Furthermore, based on the Mg-Ni-La alloy, La is substituted with the rare earth element Y, and the alloy's kinetic properties are enhanced by adjusting the content of rare earth elements Y and La, while simultaneously increasing the alloy's hydrogen storage capacity. The peak hydrogen desorption temperature of the substituted hydrogen storage alloy is reduced to 273℃, and the hydrogen storage capacity is 4.645 wt.% at 220℃ and 5MPa.

A self-adaptive temperature control system and method for a hydrogen-cooled generator set based on metal hydrogen storage belongs to the technical field of hydrogen-cooled generator sets and comprises a hydrogen-cooled generator set body, a metal hydrogen storage device, an outer circulation pipeline and a heat dissipation device. The outer circulation pipeline is respectively connected with the hydrogen-cooled generator set body and the metal hydrogen storage device to form a closed-loop circulation loop; the metal hydrogen storage device utilizes the characteristics of high-temperature hydrogen desorption and low-temperature hydrogen absorption and is matched with the heat dissipation device to achieve dynamic adjustment of the hydrogen circulation amount, and then self-adaptive temperature control is conducted on the hydrogen-cooled generator set body. A hydrogen production machine and a high-pressure hydrogen storage tank are omitted, the working pressure of the metal hydrogen storage device is smaller than 3 MPa, and the metal hydrogen storage device belongs to a medium-pressure container and has no high-pressure explosion risk; the device can move flexibly, a special safety isolation distance is not needed, hydrogen is only circulated in a closed loop, and the leakage risk is extremely low; a special operation license is not needed in the maintenance process, and the manual operation risk is reduced.

The invention discloses a preparation method of a functionalized palladium quantum dot loaded bismuth ferrite nanorod piezoelectric catalytic hydrogen evolution material, and belongs to the technical field of new energy catalytic materials. According to the invention, a palladium quantum dot loaded bismuth ferrite nanorod (Pd-BFO) cocatalyst is constructed by a simple method of electrostatic spinning and chemical reduction. The material can be used as a mechanical energy and chemical energy conversion platform and is used for efficient piezoelectric catalytic hydrogen evolution reaction. Under ultrasonic irradiation, the strong piezoelectric response of bismuth ferrite can induce ferroelectric polarization, and a built-in polarization field is formed to separate charges. Palladium quantum dots serve as a cocatalyst, transfer and enrichment of polarized charges can be promoted, the charge separation efficiency is improved, meanwhile, water adsorption and hydrogen desorption energy barriers are optimized, and therefore the piezoelectric catalytic hydrogen evolution activity is remarkably improved. The 0.5 wt% Pd-BFO material obtained through optimization can achieve the excellent hydrogen evolution rate of 4253.44 [mu] mol.g <-1 >. H <-1 >, and the performance of the Pd-BFO material is superior to that of most reported piezoelectric catalysts at present.

The invention relates to a magnesium-based hydrogen storage material and a preparation method thereof, and belongs to the technical field of hydrogen storage alloy materials and preparation thereof. The hydrogen storage material is an Mg-5Ni alloy with Sm powder uniformly distributed on the surface layer and an amorphous / nanocrystalline structure in the interior. The Sm powder is wrapped by the surface layer of the Mg-5Ni alloy to form composite powder of a core-shell structure; the hydrogen storage material is prepared from Mg-5Ni alloy powder and Sm powder as raw materials, and the raw materials are mixed and then subjected to dry ball milling. The hydrogen absorption and desorption kinetics of the existing magnesium-based hydrogen storage material can be effectively improved, the hydrogen desorption activation energy of the magnesium-based hydrogen storage material is reduced, and the problem that a solid additive is difficult to uniformly distribute on the surface is solved.

This invention relates to the field of hydrogen production catalyst technology, and in particular to a Ru / Co-Sm catalyst. 2 O 3 Composite catalysts, their preparation methods, and applications. This catalyst uses Co-Sm... 2 O 3 As a carrier, Ru is loaded on the carrier; the Ru / Co-Sm 2 O 3 The Ru loading in the composite catalyst ranged from 2.4 to 7.1 wt.%. This was achieved by loading Ru onto the heterostructure Co-Sm... 2 O 3 Obtained on a carrier. This Ru / Co-Sm 2 O 3 Composite catalysts possess mesoporous structures and abundant specific surface areas, resulting in numerous exposed active sites, making them highly catalytically active in hydrogen desorption from water. This invention employs a simple preparation method, utilizing a straightforward hydrothermal synthesis, a metal-organic framework pyrolysis strategy, and an in-situ reduction loading method to successfully prepare a novel Co and Sm... 2 O 3 Nonmetallic element co-doped heterostructure Ru / Co-Sm 2 O 3 Composite material catalysts.

This invention relates to the field of hydrogen energy storage technology, specifically disclosing a layered transition metal boride-modified lithium-magnesium-boron-hydrogen composite hydrogen storage material and its preparation method. This material uses 2LiH+MgB2 as a matrix and adds layered Mo... 4 / 3 B2 MBene was prepared as a modifier; Mo was used as a modifier. 4 / 3 B2 MBene by (Mo 2 / 3 Y 1 / 3 The 2AlB2 MAB phase precursor was prepared by selectively etching with HF to remove Al and Y atoms, followed by intercalation, layering, and freeze-drying. This invention utilizes mechanical ball milling to process Mo... 4 / 3 B2 MBene introduces the Li-Mg-B-H (LMBH) composite system, utilizing Mo 4 / 3 The unique layered structure of B2 MBene, combined with its inherent catalytic activity, significantly reduces the hydrogen desorption temperature of the LMBH system and improves its hydrogen desorption kinetics and cycle stability. This material can release 8.1 wt% H2 within 60 minutes at 420℃, and maintains a capacity retention of 68.7% after three cycles. Its performance surpasses that of bulk MoB-doped and undoped LMBH systems, providing a new approach for performance regulation of lightweight hydrogen storage materials and demonstrating promising practical application prospects.

This invention relates to a Ti-Fe-Ce-Mn-Zr-Al-Co based hydrogen storage alloy and its preparation method, belonging to the technical field of hydrogen storage alloy materials. It solves at least one of the problems of high activation conditions, long activation cycles, and poor hydrogen absorption / desorption performance in existing TiFe hydrogen storage alloys. This invention provides a Ti-Fe-Ce-Mn-Zr-Al-Co based hydrogen storage alloy, characterized in that: the alloy's specific composition is Ti... 1.05 Ce 0.05 Fe 1.15‑x‑y‑z‑m Mn x Zr y Al z Co m Where x, y, z, and m are atomic ratios, and 0.1≤x≤0.25, 0.05≤y≤0.2, 0.02≤z≤0.1, 0.02≤m≤0.1. The hydrogen storage alloy exhibits excellent activation and hydrogen absorption / desorption properties, with a hydrogen storage capacity ≥1.70 wt.%, a hydrogen absorption plateau pressure ≥0.41 MPa, and a hydrogen desorption plateau pressure ≥0.31 MPa. It can be activated in a single step at 30°C and an initial hydrogen pressure of 3 MPa, making it suitable for widespread application as a solid-state hydrogen storage material in hydrogen fuel cells and other scenarios.

Hollow porous spherical nano nickel powder with the surface coated with magnesium metal is adopted as a hydrogen adsorption material and is filled in a hydrogen storage tank, a steel wool filter layer covers the upper layer, a small number of through-hole magnetic sheets are placed in the filter layer, and the through-hole magnetic sheets and the steel wool form a magnetic filter layer together; nano nickel powder escaping in the hydrogen desorption process can be adsorbed and filtered; under the pressurization condition, hydrogen molecules on the inner surface of the hollow spherical nano nickel powder are closely stacked, similar to a quasi-liquid condition, so that the hydrogen storage capacity is greatly improved; a magnesium metal coating layer is arranged on the outer surface of the hollow porous spherical nano nickel powder, an MgH2 compound can be formed, hydrogen molecules are easily adsorbed on the surface of the magnesium metal coating layer, the overall hydrogen storage capacity can be improved, heating and cooling conditions are not needed, and convenience and practicability are achieved.

The invention discloses a solid hydrogen storage tank filled with a phase change heat storage unit and a heat management and control method of the solid hydrogen storage tank, and belongs to the technical field of solid hydrogen storage. The phase-change heat storage assembly comprises a plurality of phase-change heat storage units buried in a hydrogen storage material, and small phase-change heat storage units are filled in wall surface gaps; the control auxiliary assembly comprises a temperature sensor, a pressure sensor, a valve, a filter screen and a porous pressing plate; the thermal management and control method comprises the following steps of: introducing hydrogen with adaptive pressure during hydrogen storage, and absorbing heat and storing by a phase change unit; during hydrogen desorption, the pressure in the tank is regulated to an adaptive range, the phase change unit releases heat for dehydrogenation, and a proper temperature is maintained in the whole process. The phase change heat storage unit is in direct contact with the hydrogen storage material to strengthen heat exchange, so that hydrogen storage and release heat self-driving is realized, and the reaction rate and stability are improved; the structure is simplified, the maintenance difficulty and energy consumption are reduced, and multi-scene application is adapted.

This invention discloses a single-phase high-entropy hydrogen storage alloy and its preparation method, the chemical composition of which is Ti. x Cr y Mo z M r In the formula, x, y, z, r are atomic ratios, and 0.35≤x≤0.55, 0.35≤y≤0.55, 0.02≤z≤0.15, 0.02≤r≤0.15, and M is Mn or Fe. The preparation method of the above-mentioned high-entropy alloy hydrogen storage material is mainly to prepare it by batching, smelting, heat treatment and water quenching in sequence. The preparation method of the present invention is simple and easy to control. The prepared alloy has a stable structure, uniform alloy composition and grain size, and has excellent hydrogen absorption / desorption capacity and hydrogen desorption platform suitable for practical application. The maximum hydrogen absorption capacity is as high as 3.44 wt.%, the maximum hydrogen desorption capacity is as high as 2.37 wt.%, and the hydrogen desorption platform is higher than 0.2 MPa.

A porous nickel electrode for improving the stability of alkaline water electrolysis, its preparation method, and its application are disclosed. This invention relates to the field of electrode material technology. The method involves heating a nickel mesh and zinc powder in a nitrogen atmosphere at 200-400 °C for 2-4 hours to obtain a nickel-zinc alloy material grown on the mesh. This material is then chemically etched in an alkaline solution to obtain a porous nickel electrode. The porous nickel electrode is then held in a reducing atmosphere at 200-700 °C for 2-4 hours to complete the preparation of the porous nickel electrode. This invention constructs a porous structure with interconnected pores through an alloying-dealloying process, which facilitates rapid hydrogen desorption during electrolysis, reduces bubble blockage, and improves mass transfer efficiency. Secondary heat treatment within a specific temperature range coarsens the porous ligaments, enhancing mechanical strength and structural stability, and preventing structural collapse or active layer detachment during long-term operation. The prepared electrode maintains high hydrogen evolution activity while exhibiting excellent electrochemical stability and mechanical durability, making it suitable for industrial alkaline water electrolysis.

The invention relates to the technical field of hydrogen energy storage and management, in particular to a solid hydrogen storage dynamic allocation method, system and equipment based on hydrogen production and load fluctuation. Therefore, the problems of low efficiency of the hydrogen storage system and frequent switching of a single group of hydrogen storage units are solved. According to the method, the hydrogen production yield and the fuel cell load demand are monitored in real time, the net hydrogen flow is calculated, and a dynamic optimization model with the highest system operation efficiency and the minimum hydrogen storage unit switching loss as targets is constructed based on the net hydrogen flow. The model comprehensively considers the real-time hydrogen storage amount, hydrogen storage / hydrogen desorption rate limitation and thermal management state of each solid hydrogen storage cylinder group and the pressure-concentration-temperature characteristic of a hydrogen storage material, and realizes cooperative work and intelligent alternation among a plurality of hydrogen storage cylinder groups, so that hydrogen production and hydrogen use fluctuation is smoothed, the service life of a hydrogen storage system is prolonged, and the energy consumption of the hydrogen storage system is reduced. And the overall energy utilization efficiency is improved.

The application discloses a rotating type solar continuous hydrogen production reactor and method with ultrasonic reinforced interface mass transfer and belongs to the technical field of high-temperature solar thermochemical fuel production. In view of the problems of intermittent operation between reduction and oxidation steps of hydrogen production by a traditional reactor, slow water vapor adsorption and hydrogen desorption rate in the pores of porous ceramic reactants, and limited reaction kinetics hydrogen production rate, three innovations are provided: 1, an ultrasonic transmission system: titanium alloy waveguide is used to directionally excite the acoustic flow effect and micro disturbance in the oxidation zone; 2, rotating mesh transmission: a permanent magnet rotor is coaxially fixedly connected with a silicon carbide connecting rod, and a trapezoidal protrusion-groove structure is used to drive the periodic rotation of the foam ceramic to switch the reactor partitions (the oxidation zone and the reduction zone); and 3, a double-channel gas path: argon / water vapor is injected in the partitions to accurately control the required environment of the reaction. The application can realize continuous hydrogen production and hydrogen production rate improvement and is suitable for cerium oxide and perovskite oxygen carrier reactant systems.

The invention discloses a high-entropy alloy phase regulation and control method based on an entropy value and VEC, which comprises the following steps: firstly, carrying out regulation and control screening calculation on a TiFeMnVZrCo high-entropy alloy, meanwhile, calculating the entropy value and the VEC of the TiFeMnVZrCo high-entropy alloy, and then, determining the components of the TiFeMnVZrCo high-entropy alloy meeting the requirements according to the screening requirements; in the entropy calculation method, the screening requirement of the entropy is that the entropy is greater than 1.67 R and less than 1.79 R; in the VEC value calculation method, the screening requirement of the VEC is that 6.57 < = VEC < 6.63. The invention relates to a TiFeMnVZrCo high-entropy alloy, the chemical formula of which is TiFeMnVZrCo2, and the TiFeMnVZrCo high-entropy alloy comprises a Laves phase and a BCC phase. According to the magnesium hydride hydrogen storage material based on the TiFeMnVZrCo high-entropy alloy, under the conditions that the hydrogen absorption temperature is 250 DEG C and the hydrogen absorption pressure intensity is 3 MPa, the maximum hydrogen absorption amount can reach 4.6-4.9 wt.%, and 16-18 s is needed for reaching 90% of the maximum hydrogen absorption amount; under the conditions that the hydrogen desorption temperature is 250 DEG C and the hydrogen desorption pressure is vacuum, the maximum hydrogen desorption amount is 4.4-4.8 wt.%, and 14-16 min is needed for reaching 90% of the maximum hydrogen desorption amount; and the hydrogen desorption activation energy is 75.9 kJ / mol.

The present disclosure relates to the technical field of hydrogen storage materials, and specifically provides a magnesium-based composite hydrogen storage material, a preparation method therefor and a use thereof. The magnesium-based composite hydrogen storage material provided by the present disclosure comprises a hydrogenated combustion product of a carbonized bimetallic metal-organic framework material and MgH2, wherein the carbonized bimetallic metal-organic framework material comprises a carbon support, and nickel and zinc oxide doped into the carbon support. The magnesium-based composite hydrogen storage material exhibits excellent hydrogen absorption and desorption kinetic cycling stability, and can significantly reduce the apparent activation energy for hydrogen desorption in magnesium-based materials.

The invention discloses a portable normal-temperature low-pressure solid hydrogen storage temperature control device which comprises a normal-temperature low-pressure solid hydrogen storage unit and a heat preservation temperature control unit arranged outside the normal-temperature low-pressure solid hydrogen storage unit in a sleeving mode. The normal-temperature low-pressure solid hydrogen storage unit comprises a hydrogen storage tank, an integrated valve is arranged at the top of the hydrogen storage tank, and a nanocrystallization hydrogen storage material is arranged in the hydrogen storage tank; the nanocrystallization hydrogen storage material is prepared by mixing a Ti-Fe alloy, a V-Ti alloy and a Mn-Cr alloy in an inert atmosphere and carrying out high-energy ball milling. Through optimization of a hydrogen storage material and a system temperature control strategy, unification of high hydrogen absorption amount, normal-temperature stable hydrogen desorption and portability is realized.

This invention discloses a nitrogen-doped two-dimensional layered material supported on cobalt hydrogen storage catalyst, a hydrogen storage material containing the catalyst, and a preparation method thereof, belonging to the field of hydrogen storage technology. The hydrogen storage catalyst is an N-doped Ti3C2T catalyst. x MXene-supported Co, when combined with magnesium hydride, exhibits excellent catalytic performance: in terms of hydrogen desorption kinetics, MgH2-N-doped Ti3C2T... x The MXene-supported Co composite hydrogen storage material exhibited a hydrogen dehydrogenation rate of 6.50 wt.% within 12 minutes at 300℃; when the dehydrogenation temperature decreased to 260℃, the composite hydrogen storage material released 6.01 wt.% hydrogen within 50 minutes. Furthermore, the initial hydrogen release temperature of this composite hydrogen storage material was 110.8℃ lower than that of pure MgH2. Regarding hydrogen absorption kinetics, MgH2-N doped Ti3C2T... x The MXene-supported Co composite hydrogen storage material exhibited a hydrogen absorption capacity of 6.14 wt.% at 150 °C for 30 min. Additionally, the MgH₂-N-doped Ti₃C₂T₅... x The MXene-supported Co composite hydrogen storage material exhibits a high cycle life, retaining 95.38% of its capacity after 50 hydrogen adsorption / desorption cycles. The catalyst is simple to prepare, and the raw materials are readily available, making it suitable for large-scale production.

This invention discloses a multi-element Mg-based hydrogen storage alloy and its preparation method, belonging to the field of solid-state hydrogen storage materials technology. The alloy is a pentagonal alloy of Mg-Ni-Ce-Cu-Y, containing, by atomic percentage, 1%–5% Ni, 0.1%–3% Ce, 0.1%–3% Cu, and 0.1%–3% Y, with the balance being Mg and unavoidable impurities. The preparation method employs melting, cutting, low-energy ball milling, and pressing processes, using metal hydrides as ball milling control agents, making it environmentally friendly and safe. This invention utilizes multi-element synergistic catalysis to construct multi-level hydrogen diffusion channels, significantly reducing the hydrogen desorption activation energy and temperature, and improving hydrogen absorption and desorption kinetics. Furthermore, the process is simple, suitable for large-scale production, and can be widely applied in the field of solid-state hydrogen storage.

This invention relates to a high-capacity Mg-RE(Sm,Nd)-Ca-Cu-Zn hydrogen storage composite material catalyzed by K2TiF6+Nb2O5, belonging to the field of solid-state hydrogen storage materials technology. It solves one of the problems of existing magnesium-based hydrogen storage materials, namely, high thermodynamic stability, complex activation process, high hydrogen desorption temperature, and slow hydrogen absorption / desorption kinetics. This invention discloses a Mg-based solid-state composite hydrogen storage material, the composition of which is: Mg... 95‑x‑y Sm x Nd y Ca2Cu 3‑z Zn z +m wt.%(K2TiF6+Nb2O5), where x, y, and z are atomic ratios, and 0.5≤x≤2, 0.5≤y≤2, 0.2≤z≤3, m is the percentage of K2TiF6+Nb2O5 in the alloy, 4≤m≤10, the mass ratio of K2TiF6 to Nb2O5 is 1:1, the preferred atomic ratio is 1.5:1.5:0.8, m=6. This high-capacity Mg-RE(Sm,Nd)-Ca-Cu-Zn-based solid hydrogen storage composite material has high hydrogen absorption and desorption capacity and excellent hydrogen absorption and desorption kinetics; moreover, the preparation process is simple and easy to operate, suitable for large-scale preparation, and can be used as a hydrogen storage / hydrogen supply carrier in various scenarios.

The invention particularly relates to a method and a system for testing hydrogen absorption and desorption rate constants of zirconium-like alloy, and belongs to the technical field of material performance testing. The method comprises the following steps: S1, carrying out high-pressure gas-phase hydrogen permeation test on a zirconium-like alloy sample at a test temperature, and calculating a hydrogen desorption rate constant of the zirconium-like alloy sample by combining the hydrogen dissolution limit solid solubility of the zirconium-like alloy sample at the test temperature; s2, performing low-pressure gas-phase hydrogen permeation test on the zirconium-like alloy sample at the test temperature, and calculating the hydrogen absorption rate constant of the zirconium-like alloy sample by combining the hydrogen desorption rate constant of the zirconium-like alloy sample; and S3, changing different test temperatures, and repeating S1 and S2 to obtain the change rule of the hydrogen absorption rate constant and the hydrogen desorption rate constant of the zirconium-like alloy sample along with the temperature. The system is used for implementing the method. The method realizes accurate and reliable determination of the hydrogen absorption and desorption rate constants of the zirconium-like alloy.

The invention discloses an energy control system and method for coupling wind power generation with solid hydrogen storage. The system comprises a wind power generation module; the hydrogen production module is electrically connected with the wind power generation module; the solid-state hydrogen storage module is connected with the hydrogen production module, the solid-state hydrogen storage module comprises at least two solid-state hydrogen storage units, the working states of the solid-state hydrogen storage units comprise hydrogen absorption operation, hydrogen desorption operation and hot backup operation, and the working states of the two solid-state hydrogen storage units are different at the same time; the heat management equipment is respectively connected with the hydrogen production module and the solid hydrogen storage module and is used for storing and dispatching heat generated by the hydrogen production module and the solid hydrogen storage module; and the intelligent control unit is used for adjusting the hydrogen production power of the hydrogen production module, the operation mode of the solid hydrogen storage module and the heat scheduling of the heat management equipment based on the predicted wind power and external energy demand. According to the system, the wind power consumption rate and the energy utilization efficiency can be improved, and the adaptability of the system to fluctuating wind power is enhanced.

The invention discloses a multilayer temperature control solid hydrogen storage device capable of rapidly releasing hydrogen and a working method, and belongs to the technical field of solid hydrogen storage. The solid hydrogen storage device comprises a solid hydrogen storage module, a heat management system, a sensor system and a controller; the solid hydrogen storage module comprises a first-stage hydrogen storage module and a second-stage hydrogen storage module which are connected with the fuel cell stack through a gas circuit, the thermal management system can be respectively configured as a hydrogen desorption subsystem and a hydrogen absorption subsystem, and the controller controls the heating unit, the refrigeration unit and the multi-way valve according to the temperature of the anti-freezing solution and hydrogen absorption / desorption state information. And performing thermal management on the first-stage hydrogen storage module and the second-stage hydrogen storage module. According to the invention, thermal management can be respectively carried out in two working states of hydrogen absorption and hydrogen desorption without adding a buffer tank, and rapid hydrogen desorption and low-energy-consumption hydrogen charging in a low-temperature state can be realized.

This invention discloses a nano-solid-state hydrogen storage material and its preparation method, belonging to the field of new energy materials technology. The nano-solid-state hydrogen storage material has a core-shell structure, comprising a nano-magnesium-based active phase core and a functionalized porous carbon material outer shell; the core contains in-situ grown multi-metal nanocatalyst particles; the outer shell is doped with non-metallic elements and loaded with metal-organic framework derivative nanoparticles; the core-shell structure is dispersed in a three-dimensional interconnected carbon-based network framework. The preparation method includes: preparing a multi-metal-organic framework precursor solution; synthesizing multi-metal-organic framework nanoparticles using a solvothermal method; chemically combining with a magnesium source and a nickel source to obtain a precursor composite; carbonization treatment to obtain a porous carbon-coated multi-metal nanocatalyst@magnesium-based composite material; constructing a three-dimensional network framework by combining with a functionalized carbon source and metal-organic framework derivatives; and high-pressure hydrogenation treatment. The material of this invention exhibits a low hydrogen desorption temperature, rapid hydrogen absorption and desorption kinetics, and excellent cycle stability.

The utility model relates to the technical field of hydrogen storage, and discloses a solid-gas coupling hydrogen storage tank structure based on metal hydride hydrogen storage, which comprises a tank body comprising an inner container layer, a middle layer and an outer ring layer; the inner container layer is of a nautilus shell layered corrugated structure, the middle layer is of a honeycomb structure, the outer ring layer is of a smooth steel ring structure, the hydrogen storage assemblies are evenly distributed in the circumferential direction of the inner wall of the inner container layer, and the hydrogen storage assemblies at least comprise the multiple hydrogen storage assemblies of different sizes so as to be matched with the inner container space; the hydrogen storage assembly comprises a plurality of storage chambers and a heat management system, the storage chambers are used for storing metal hydrides, vent holes are formed in the two ends of each storage chamber, and the heat management system comprises a liquid cooling assembly used for cooling during hydrogen absorption and a heating assembly used for heating during hydrogen desorption. The stability of the tank body can be enhanced by arranging the inner container layer, the middle layer and the outer ring layer, and the temperature during hydrogen absorption and hydrogen desorption can be controlled by arranging the heating system in the hydrogen storage assembly.

The utility model provides a hydrogen absorption and desorption solid hydrogen storage device. The hydrogen absorption and desorption solid hydrogen storage device comprises a hydrogen storage tank inner cylinder and a jacket outer cylinder, the jacket outer cylinder surrounds the outer side wall of the hydrogen storage tank inner cylinder and is connected with the hydrogen storage tank inner cylinder, and a heat exchange medium channel is formed between the inner side wall of the jacket outer cylinder and the outer side wall of the hydrogen storage tank inner cylinder; a plurality of multi-channel heat exchange modules are arranged in the hydrogen storage tank inner cylinder and are sequentially arranged at intervals in the axial direction of the hydrogen storage tank inner cylinder; the heat exchange medium inlet is communicated with inlets of the multi-channel heat exchange modules through a heat exchange medium header pipe, outlets of the multi-channel heat exchange modules are communicated with the heat exchange medium channels, and a heat exchange medium outlet is formed in the jacket outer cylinder; the multi-channel heat exchange module can exchange heat with a hydrogen storage medium in the hydrogen storage tank inner cylinder, and a plurality of through holes are formed in the multi-channel heat exchange module. The outer jacket is arranged on the outer wall of the hydrogen storage tank, cold and hot media are collected through the outer jacket after passing through each multi-channel heat exchange module, efficient heat exchange is achieved, and then hydrogen absorption and hydrogen desorption are achieved.

The invention provides a low-cost hydrogen storage method for supplying heat generated by an exothermic reaction to a solvent. According to the invention, sodium nitrate-potassium nitrate-sodium nitrite ternary composite hot molten salt is used as a heat transfer medium, and Ni-LaO-ZrO / AlO is used as a modification catalyst. Cyclohexane is subjected to dehydrogenation, hydrogen release and heat release in the presence of a modified catalyst at 450-460 DEG C under 0.1 MPa, molten salt absorbs heat and then is regulated to 390-410 DEG C for a benzene hydrogenation hydrogen storage reaction, and the product cyclohexane is recycled. By the adoption of the method, 19.18 kw net energy can be produced through circulation of 1 kg of cyclohexane, energy self-sufficiency and full material circulation are achieved, energy consumption and cost of a traditional hydrogen storage process are greatly reduced, and the method is suitable for large-scale hydrogen energy storage scenes and wide in application market.