153results about "Reversible hydrogen uptake" patented technology

1.1 Storage system for the storage and transport of hydrogen, based on hollow microspheres in whose closed shells metal particles are embedded, which can be heated inductively. 2.1. Various hydrogen storage and transport systems exist, which either have limited storage capacities or require significant energy input, and are therefore generally not economically viable for a broad hydrogen economy. The new system aims to provide large storage capacities with the lowest possible energy consumption. 2.2. The storage system is characterized by the fact that metal, metal alloy, or metal composite particles are embedded in the closed shells of hollow microspheres, which can be inductively heated, thus allowing rapid hydrogen permeation into and out of the hollow spheres even at low temperatures during the loading and unloading process. 2.3. Hydrogen storage and transport system.

The present invention introduces novel methods and procedures to establish optimal conditions for ENERGY PRODUCTION, ensuring that the process is both reproducible and controllable. These methods utilize extremely strong electric fields that exists at the INTERFACE area between PRIMARY SOLIDs and SECONDARY SOLIDs that each have different work function values. Prescribed types of solids, having the highest work function values, allow absorbed HYDROGEN atoms to migrate to the INTERFACE area, followed by the ionization of HYDROGEN atoms within this area. The strong electric field will concentrate HYDROGEN ions in an extreme high density at the INTERFACE area. Preferred methods include the use of PRIMARY SOLIDs whose work function value is increased by the absorption of HYDROGEN, applying additional STIMULI and implementing fully enclosed INTERFACE areas. Increased work function values and / or additional STIMULI further improve the ionization and accumulation of HYDROGEN ions. Escape of accumulated HYDROGEN ions from the INTERFACE area is prevented by a suitable FULLY ENCLOSED INTERFACE area, safeguarding that accumulation of ions continues until the required threshold density of HYDROGEN ions is surpassing the required threshold density to initiate and maintain ENERGY PRODUCTION.

The invention relates to the technical field of purification, and discloses a hydrogen purification method based on a magnesium-based solid hydrogen storage material, which comprises the following steps: S11, packaging the magnesium-based solid hydrogen storage material into a plurality of purification units, connecting the two purification units in parallel, and arranging a thermal interaction unit between the two parallel purification units to form a primary purification module; and S2, purification: introducing the low-purity hydrogen into the purification module, so that the low-purity hydrogen is respectively subjected to a hydrogen absorption reaction and a hydrogen desorption reaction for multiple times in the purification units connected in parallel, the low-purity hydrogen is purified, heat is supplied to the purification units which are subjected to the hydrogen desorption reaction through the heat interaction unit, and heat energy released by the hydrogen absorption reaction is stored. Based on the selective adsorption capacity of the solid hydrogen storage material to hydrogen, the solid hydrogen storage material is used for adsorbing hydrogen and discharging impurity gas, so that the purity of hydrogen is improved, and the heat interaction unit is used for storing heat energy released by a hydrogen absorption reaction and applying the heat energy to a hydrogen desorption reaction, so that the energy consumption in the purification process is reduced.

The invention aims to provide a solid hydrogen storage hydrogen closed cycle hydrogen source generator for an underwater vehicle, which belongs to the field of dehydrogenation devices and comprises a reactor, a pressure stabilizing common rail pipe, a hydrogen storage material delivery pump, a solid hydrogen storage material storage unit, a solid hydrogen storage material spraying device, a product collecting device and a hydrogen storage unit. The hydrogen storage material conveying pump is connected with the pressure stabilizing common rail pipe, the solid hydrogen storage material storage unit and the solid hydrogen storage material spraying device, the hydrogen storage unit is connected with the pressure stabilizing common rail pipe, and the reactor is connected with the hydrogen storage unit. The solid hydrogen storage material is used for releasing hydrogen, one part of hydrogen is conveyed to the fuel cell to react for power output of the underwater vehicle, the other part of circulating hydrogen assists the hydrogen storage material in injection, and an underwater closed circulation mode suitable for the underwater vehicle is achieved. The solid hydrogen storage material conveying module and the circulating hydrogen supply module are matched, and rapid mixing of the solid hydrogen storage material and hydrogen and large-flow injection of the solid hydrogen storage material are achieved.

The present invention discloses a preparation method of a graphite-like carbon nitride-yttrium-stabilized zirconium oxide composite hydrogen barrier coating. First, a low-carbon steel substrate is pretreated to obtain a pretreated substrate; then zirconium n-propyl alcohol, n-propyl alcohol, acetylacetone and yttrium nitrate are mixed and reacted, aged to obtain a yttrium-stabilized zirconium oxide sol; the sol is coated on the pretreated substrate and dried, and the coating, drying and repeated treatments are followed by pre-sintering, followed by repeated coating, drying, and finally heat treatment to obtain a yttrium-stabilized zirconium oxide coating YSZ; melamine and thiourea are mixed, calcined and ground to obtain powdered graphite-like carbon nitride g-C3N4; finally, g-C3N4 powder and a coating coated with YSZ are sintered to obtain a graphite-like carbon nitride-yttrium-stabilized zirconium oxide g-C3N4 / YSZ composite coating. The hydrogen barrier coating prepared by the present invention can solve the problem that hydrogen embrittlement is prone to occur when current steel equipment is used in a hydrogen environment, and improve the safety of steel equipment during hydrogen energy utilization.

The invention relates to a power supply system comprising a modular combination of a hydrogen generation unit, a hydrogen usage unit and a control or regulation unit for controlling or regulating the operation of the hydrogen generation unit and the hydrogen usage unit.

The present invention introduces novel methods to establish optimal conditions for the PRODUCTION OF ELECTRICITY. These methods utilize extremely strong electric fields at the INTERFACE areas between primary and secondary solids with different work function values. Prescribed high-work-function solids absorb HYDROGEN atoms, which ionize in the INTERFACE area. The strong electric field concentrates HYDROGEN ions in a high density at the INTERFACE. Preferred methods involve increasing the work function of primary solids by absorbing HYDROGEN, thereby strengthening the electric field at the INTERFACE. This high density of HYDROGEN ions at the INTERFACE causes HYDROGEN ions to escape from the surface of the composition of PRIMARY SOLIDs and SECONDARY SOLIDs, creating an abundance of electrons. Escaping HYDROGEN ions recombine at the surface of a suitable CATALYST, reducing the number of electrons in the CATALYST and establishing a potential difference between the composition of PRIMARY SOLIDs and SECONDARY SOLIDs and the CATALYST. An IMPEDANCE between these potentials enables electrons to establish electrical equilibrium, thereby transforming the composite and its associated process into a source of electricity. In the absence or presence of a high IMPEDANCE, a substantial potential difference is established. Discharge reactions occur under the appropriate conditions, emitting light that can serve as a light source or generate additional electrical energy through electrochemical cells.

The invention relates to a hydrogen ore carrier gas-solid two-phase conversion method which is suitable for a gas-solid two-phase conversion device containing a hydrogenation container and a hydrogen desorption container. The hydrogenation container is provided with a first heat preservation container and a first pipe group and is provided with a feeding port and a discharging port; the hydrogen releasing container comprises a second heat preservation container, a second pipe set, a feeding port, a discharging port and a hydrogen collecting pipeline. The method comprises the following steps: placing a solid hydrogen storage carrier to be loaded in a hydrogenation container, heating, introducing hydrogen, and introducing cooling water after complete absorption; and putting the full-load solid hydrogen storage carrier into a hydrogen releasing container, heating to promote the hydrogen to be discharged, releasing the hydrogen after the hydrogen is completely discharged, and introducing cooling water to complete conversion. Accurate temperature control is realized by adopting rapid heating of superheated steam and timely cooling of cold circulating water; and the heat source is adaptive to various hydrogen storage carriers. Hydrogenation and hydrogen desorption are carried out in different containers, cross contamination is prevented, and efficient process is guaranteed. The metal small-particle hydrogen storage carrier is large in specific surface area, and the hydrogen storage efficiency is improved. A steam heat source is quick in heat transfer, good in temperature control, shortened in reaction period and beneficial to industrial application.

The invention discloses a metal oxide / carbon / nickel composite material, a preparation method and application of the metal oxide / carbon / nickel composite material to a magnesium-based hydrogen storage material, and belongs to the field of hydrogen storage energy. The problems that a single-component catalyst in the MgH2 hydrogen storage material is low in active site, the interface is inactivated in the circulation process and the like are solved. A metal nickel source and a cerium source are combined with an organic ligand trimesic acid to form bimetal MOF, CeO2 / C / Nix obtained after calcination inherits the high specific surface area of MOF, metal is evenly dispersed in a carbon matrix, CeO2 / C / Nix is introduced into MgH2, microscale efficient catalysis of MgH2 is achieved, when the doping amount of CeO2 / C / Ni20 is 8 wt.%, the initial dehydrogenation temperature is 188.23 DEG C, and when the doping amount of CeO2 / C / Ni20 is 8 wt.%, the initial dehydrogenation temperature is 188.23 DEG C, and the specific surface area of CeO2 / C / Nix is 27.8 wt.%. After 10 cycles, the capacity retention rate is 98.8%, excellent hydrogen storage performance is shown, and a unique insight is provided for large-scale production of the magnesium-based hydrogen storage material.

A heat generating device includes: a sealed container; a tubular body provided in a hollow portion of the sealed container; a heat generating element provided on an outer surface of the tubular body and configured to generate heat by occluding and discharging hydrogen supplied to the hollow portion; and a flow path formed by an inner surface of the tubular body and through which configured to allow a fluid that exchanges heat with the heat generating element to flow. The heat generating element includes a base made of a hydrogen storage metal, and a multilayer film provided on the base. The multilayer film has a first layer made of a hydrogen storage metal and having a thickness of less than 1000 nm, and a second layer made of a hydrogen storage metal, which is different from that of the first layer, and having a thickness of less than 1000 nm.

A device (1) for hydrogen storage, comprising: a semiconductor substrate (2); at least one pillar (10) being arranged on the semiconductor substrate (2), the at least one pillar (10) comprising a core (12) and a shell (14), the core (12) of the pillar (10) comprising semiconductor material and the shell (14) of the pillar (10) enclosing the core (12) of the pillar (10), the shell (14) comprising: Mg3N2; and / or a plurality of GaN particles (16).

The present invention relates to a hydrogen storage pellet that allows the production of compact, modular, safe and energy-efficient hydrogen storage. The pellet of the present invention comprises a peripheral ring (4) of an outer diameter of expanded natural graphite (ENG) of a predetermined height, surrounding a wafer of metal hydride (5) in the form of a compressed powder.

The application discloses an alkali metal hydride, a preparation method and application, and at least comprises the following steps: under a non-active atmosphere, ball milling raw materials containing alkali metal, an organic solvent and hydrogen to obtain the alkali metal hydride. The alkali metal hydride disclosed by the application has uniform particle size and wide application prospects in the fields of hydrogen storage, heat storage and catalytic synthesis; the preparation method is simple, suitable for large-scale and low-cost amplification, and has good development prospects and practical application value.

A metal modified graphene structure model is applied to predict hydrogen storage materials, comprising a structure simulation unit, a simulation data unit, a preparation measurement unit, a data processing unit and a parameter feedback unit; the structure simulation unit includes a graphene base structure composed of carbon atoms and a plurality of modified structure models pre-prepared for metal modification of the graphene base, combined into hydrogen storage materials; the simulation data unit calculates the structure of H2 molecules adsorbed on the hydrogen storage materials and calculates the simulation hydrogen storage data; the preparation measurement unit actually prepares the hydrogen storage materials and measures the actual hydrogen storage data; when the actual hydrogen storage rate data is greater than or equal to the first threshold value, the data processing unit calculates the difference percentage of the actual hydrogen storage data and the simulation hydrogen storage data, and outputs the data difference degree; otherwise, an abnormal warning signal is output; when the data difference degree is less than or equal to the second threshold value, the parameter feedback unit outputs that the hydrogen storage data of the preparation measurement unit is qualified, otherwise, an abnormal warning signal is output and feedback is performed, and data optimization is performed.

This invention discloses a hydrangea-like NiO@NiMoO4 composite material and its preparation and application, which belongs to the technical field of hydrogen storage materials. This application utilizes a comprehensive combination of hydrothermal, calcination, and ball milling techniques to produce the composite material. The resulting material exhibits a microscopic hydrangea-like spherical morphology with particle diameters of 2-3 μm. When this material was blended with MgH2 to form an MgH2+10 wt% NiO@NiMoO4 composite hydrogen storage material, it began to release hydrogen at 190°C and rapidly released 6.44 wt% H2 within 4.5 min at 300°C, achieving 99.4% of the theoretical hydrogen release amount. This demonstrates that this composite hydrogen storage material has good low-temperature hydrogen storage / desorption mechanical properties, a high hydrogen storage / desorption capacity, and good cycling stability. Overall, this material has great prospects for application in hydrogen storage and may provide a new concept for the research and development of hydrogen storage materials.

The invention discloses a hydrogen desorption system and method of a magnesium-based solid hydrogen storage reaction kettle, a hydrogen storage tank is placed in each placement position in an inner cavity of the reaction kettle, and each placement position is provided with a heat exchange coil pipe; the hydrogen desorption system comprises a hydrogen desorption part, a temperature control part and a safety protection part; the hydrogen desorption part comprises a hydrogen desorption main pipeline, a hydrogen desorption automatic switch valve is arranged on the hydrogen desorption main pipeline, and a vacuumizing pipeline is connected to the hydrogen desorption main pipeline in parallel; the temperature control part comprises an external heat-conducting oil circulating system, a flow bypass pipeline is arranged between the oil inlet pipeline and the oil return pipeline in a crossing manner, and a heat-conducting oil shunting automatic switch valve is arranged on the flow bypass pipeline; the safety protection part comprises a reaction kettle safety valve arranged on the reaction kettle, the reaction kettle safety valve is externally connected with an emptying pipeline, a pressure relief bypass pipeline is arranged between the emptying pipeline and the hydrogen desorption main pipeline in a crossing mode, and an automatic opening and closing pressure relief valve is arranged on the pressure relief bypass pipeline. The reaction kettle has the advantages that rapid and efficient hydrogen desorption of a plurality of hydrogen storage tanks in the reaction kettle is realized, and the system safety is ensured.

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 relates to a hydrogen direct-fired compressed CO2 energy storage system coupled with solid hydrogen storage, the hydrogen direct-fired compressed CO2 energy storage system comprises a solid hydrogen storage unit, a hydrogen direct-fired unit and a compressed CO2 energy storage unit, the solid hydrogen storage unit is connected with an inlet of the hydrogen direct-fired unit, and an outlet of the hydrogen direct-fired unit is connected with an inlet of the compressed CO2 energy storage unit; an outlet of the compressed CO2 energy storage unit is connected with an inlet of the hydrogen direct combustion unit; the compressed CO2 energy storage unit comprises at least two sections of compression devices, and each section of compression device is provided with an interstage heat exchanger. The system has the characteristics of zero carbon emission, safety, high efficiency and high energy utilization rate, and supports power grid peak regulation and zero carbon technologies.

The invention discloses a preparation method and application of a selective hydrogen adsorption type magnesium base material in a non-pure hydrogen atmosphere, and the preparation method comprises the following steps: carrying out thinning treatment on Ti3C2 MXene powder to obtain few-layer Ti3C2; the method comprises the following steps: weighing a MgH2 powder sample, pretreating, and then carrying out atomic layer deposition to obtain a sample subjected to atomic layer deposition coating treatment; carrying out ball milling treatment on the sample subjected to atomic layer deposition coating treatment and few-layer Ti3C2, so as to obtain MgH2-ZrTi; mgH2-ZrTi powder is weighed and pretreated, amorphous Al2O3 of 5 nm to 20 nm is deposited after pretreatment, and the selective hydrogen adsorption type magnesium-based material is obtained. The method disclosed by the invention is simple, efficient and easy to operate, is beneficial to large-scale production and application, and also fills the blank of air stability and selective hydrogen absorption of the hydrogen storage material.

An electrochemical cell active hydrogen capture and release system including a first zone having a target predetermined concentration of hydrogen c1 and housing: an electrical component, an adsorbing electrode including a hydrogen adsorbing material, a counter electrode separated from the adsorbing electrode, and an electric circuit connecting the adsorbing and counter electrodes to apply electrical bias configured to facilitate capture and release of hydrogen gas from the adsorbing electrode; and a second zone having a target predetermined concentration of hydrogen c2, c2 being greater than c1.

A solid state storage system includes a pressure-sealed storage unit defining an interior and having an outlet, an upper manifold and a lower manifold separated by a dividing plane having a set of ports, a set of chambers, and a solid state storage, wherein at least some gas is supplied to the outlet.

This invention discloses a hydrangea-like NiO@NiMoO4 composite material and its preparation and application, which belongs to the technical field of hydrogen storage materials. This application utilizes a comprehensive combination of hydrothermal, calcination, and ball milling techniques to produce the composite material. The resulting material exhibits a microscopic hydrangea-like spherical morphology with particle diameters of 2-3 μm. When this material was blended with MgH2 to form an MgH2+10 wt% NiO@NiMoO4 composite hydrogen storage material, it began to release hydrogen at 190°C and rapidly released 6.44 wt% H2 within 4.5 min at 300°C, achieving 99.4% of the theoretical hydrogen release amount. This demonstrates that this composite hydrogen storage material has good low-temperature hydrogen storage / desorption mechanical properties, a high hydrogen storage / desorption capacity, and good cycling stability. Overall, this material has great prospects for application in hydrogen storage and may provide a new concept for the research and development of hydrogen storage materials.

The invention discloses a core-shell structure catalyst and a preparation method and application thereof, and belongs to the technical field of catalysts. The core-shell structure catalyst comprises an inner core and a shell, wherein the inner core comprises carbon spheres; the shell covers the surface of the inner core and comprises titanium oxide. The preparation method of the core-shell structure catalyst comprises the following steps: preparing carbon spheres; mixing and impregnating carbon spheres and a titanium n-propoxide solution, and drying by distillation to obtain an impregnated product; placing the impregnated product in a nitrogen or inert atmosphere, raising the temperature to 700-900 DEG C at the speed of 3-5 DEG C / min, raising the temperature to 1100 DEG C at the speed of 4-6 DEG C / min for reaction, and cooling to obtain the Ti3O5-coated CS core-shell structure catalyst. The core-shell structure catalyst takes the carbon spheres as the core and the titanium oxide as the shell, and is used for the magnesium-based hydrogen storage material, so that the dehydrogenation temperature of the magnesium-based hydrogen storage material can be obviously reduced, and the dehydrogenation temperature is lower than 300 DEG C.

The application discloses a preparation method of a black phosphorus doped magnesium-based novel hydrogen storage material, and the method comprises the following steps: mixing and ball-milling black phosphorus micro powder and magnesium powder obtained through electrochemical exfoliation under an inert gas atmosphere, and performing ultrasonic crushing to obtain a nano Mg / BP composite material; and performing heat treatment on the nano Mg / BP composite material under an H2 atmosphere to obtain a nano MgH2 / BP hydrogen storage material. The method uses cheap magnesium powder as raw material, embeds the magnesium powder between expanded black phosphorus layers by using a simple method combining ball-milling and ultrasonic crushing, uses lone pair electrons of the black phosphorus as anchor points to solve the problem of easy agglomeration of magnesium powder nanoparticles, simultaneously uses a large specific surface area of the black phosphorus and strong physical adsorption characteristics of the black phosphorus on hydrogen to expand the capacity of the hydrogen storage material, and finally uses the attraction ability of the lone pair electrons of the black phosphorus on high-valence magnesium in magnesium hydride to weaken Mg-H bonds and effectively reduce the dehydrogenation temperature. The preparation method has the advantages of low cost, short cycle, strong repeatability and wide application prospect in the field of hydrogen energy.

The invention aims to provide a solid hydrogen storage material dehydrogenation device coupled with a heat pump management system, which belongs to the field of dehydrogenation and comprises a dehydrogenation unit, the dehydrogenation unit comprises a device body, a dehydrogenation chamber is formed in the device body, a hydrogen conveying pipeline is arranged on the device body and communicated with the dehydrogenation chamber, and a solid hydrogen storage material supply valve is mounted at the top of the device body. A heating pipe network is arranged in the dehydrogenation chamber, cooling water tanks are arranged on two sides of the dehydrogenation chamber, and a water circulation pipeline is arranged in the device body below the dehydrogenation chamber. The heat pump management system is adopted, waste heat generated in the dehydrogenation reaction process is recycled and converted into cold energy to be used for adjusting the temperature of the dehydrogenation unit, and therefore the dehydrogenation efficiency is improved, and energy consumption is reduced. Modular design is adopted, so that each dehydrogenation unit can operate independently or work cooperatively with other units, a user can flexibly adjust the scale of the system according to actual requirements, meanwhile, overhaul and maintenance are facilitated, and the influence on operation of the whole system is reduced.

The present invention relates to the technical field of purification, and discloses a hydrogen purification system, which comprises a primary purification module, the primary purification module comprises a first purification unit, a second purification unit and a thermal interaction unit, and the first purification unit and the second purification unit are arranged in parallel and alternately perform a hydrogen absorption reaction and a hydrogen desorption reaction, the thermal interaction unit is arranged between the first purification unit and the second purification unit, and heat energy released by the first purification unit or the second purification unit which performs hydrogen absorption reaction can be transferred to the second purification unit or the first purification unit which performs hydrogen desorption reaction through the thermal interaction unit. According to the scheme, based on the selective adsorption capacity of the magnesium-based solid hydrogen storage material to hydrogen, the magnesium-based solid hydrogen storage material is used for adsorbing the hydrogen and discharging impurity gas, so that the purity of the hydrogen is improved and can reach 99.9999% at most, meanwhile, heat energy released by hydrogen absorption reaction is stored by the heat interaction unit and is used for hydrogen desorption reaction, and the hydrogen desorption efficiency is improved. The energy consumption in the purification process is reduced.

The application discloses a kind of carbon nanofiber load MnTi bimetallic microspheres, with the compound of transition metal titanium isopropyl titanate, manganese chloride tetrahydrate, polyvinylpyrrolidone PVP as raw material, carbon nanofiber load MnTi bimetallic microspheres PVP-MnTi are obtained by electrospinning method;Carbon nanofiber load MnTi bimetallic microspheres CNT-MnTi can be prepared by calcining again.The preparation method includes the following steps:1, the electrospinning of PVP-MnTi;2, the preparation of CNT-MnTi.As the application of MgH2 hydrogen storage catalyst, CNT-MnTi is ball milled with magnesium hydride, and a kind of magnesium hydride hydrogen storage material based on CNT-MnTi is obtained;Under the condition that the temperature programmed rate is 3 DEG C / min, the initial hydrogen release temperature is 180-190 DEG C;Under the condition that the hydrogen absorption pressure is 20-30bar, the hydrogen absorption temperature is 150-250 DEG C, the hydrogen absorption time is 200-600s, the hydrogen absorption amount is 5.8-6.2wt%;Under the condition that the hydrogen release temperature is 275-350 DEG C, the hydrogen release time is 240-360s, the hydrogen release amount is 4.0-6.1wt%.

This invention discloses an integrated hydrogen production, storage, and seawater desalination device utilizing the full spectrum of solar energy. From the inside out, it comprises a photocatalytic hydrogen production system, a catalytic hydrogen storage system, and a thermal evaporation seawater desalination system. The photocatalytic hydrogen production system absorbs ultraviolet light and some visible light to catalytically decompose water and produce hydrogen. Some visible and infrared light wavelengths are absorbed by the photocatalyst and photocatalytic solution and converted into heat. The catalytic hydrogen storage system absorbs unused visible and infrared light wavelengths and converts them into heat, transferring the waste heat generated by the photocatalytic hydrogen production system to the catalytic hydrogen storage system. The hydrogen produced by photocatalysis is transferred to the catalytic hydrogen storage system as a hydrogen source for hydrogen addition, achieving full-spectrum frequency-division hydrogen production and storage, and simultaneously realizing integrated hydrogen production and storage. The thermal evaporation seawater desalination system utilizes the waste heat from the catalytic hydrogen storage system to drive seawater evaporation to produce fresh water, achieving efficient full-spectrum utilization of solar energy.

This invention is a divisional application of Chinese invention patent application No. 202310608706.5, filed on May 28, 2023, entitled "Slow-Release Hydrogen Production Material Containing Nano-Silicon and Its Application in Aquatic Ecosystem Restoration". This invention discloses a slow-release hydrogen production material containing nano-silicon and its preparation method, belonging to the field of environmental protection technology. The invention involves sterilizing a 2-5% sodium alginate solution, cooling it to room temperature, adding 0.3-0.5% wt of nano-silicon to the sodium alginate solution, and stirring at 500-600 r / min at room temperature for 30-60 min to obtain a nano-silicon sodium alginate solution. The prepared nano-silicon sodium alginate solution is then added dropwise at a volume ratio of (1-5):1 to a 2-5% CaCl2 solution at a rate of 1 drop / second, and allowed to stand for 5-10 min to obtain the final product. The layered structure of this material allows the nano-silicon material to be uniformly distributed and stably produce hydrogen within the sphere.

The invention belongs to the technical field of thermal power generating units, and relates to a flexible zero-carbon power system and a use method thereof. Comprising coal mine drainage water and new energy electricity abandoning; the coal mine drainage water and the new energy abandoned electricity are both connected with the electrolytic hydrogen production device; the electrolytic hydrogen production device is respectively connected with the magnesium-based solid hydrogen storage device and the oxygen storage tank; the oxygen storage tank is connected with the gas mixing device; the mixing device is respectively connected with the fuel conveying device and the boiler; the fuel conveying device is connected with the boiler; the magnesium-based solid hydrogen storage device is connected with the oil-steam heat exchanger; the oil-steam heat exchanger is connected with the steam turbine; the steam turbine is connected with the boiler; resources such as abandoned wind and light, coal mine drainage water and the like can be comprehensively utilized, and low-cost zero-carbon power system construction is achieved.