69 results about "Desorption kinetics" patented technology

The invention discloses a titanium-based hydrogen storage alloy material and a preparation method and application thereof. The element composition of the titanium-based hydrogen storage alloy material is Ti < 0.890 > Zr < 0.110 > Cr < 0.900 > Mn < 0.800 > Fe < 0.175 > (VFe) < 0.125 > + x wt.% Ce, and x ranges from 0 to 5. The titanium-based hydrogen storage alloy material has the characteristics of being easy to activate and excellent in hydrogen absorption and desorption performance (suitable in hydrogen absorption and desorption platform pressure, small in platform lag, large in reversible hydrogen storage capacity and fast in hydrogen absorption and desorption dynamics), and can meet the application conditions of kilowatt-level fuel cells of heavy machinery; the practical application of the Ti-based AB2 type hydrogen storage alloy in the aspect of kilowatt-level fuel cells is favorably widened.

The invention discloses a thermochemical energy storage composite material with a bionic ordered structure and a preparation method of the thermochemical energy storage composite material, and relates to the crossing field of new energy materials and thermochemical energy storage technologies. Through an optimization strategy of coordination of geometrical shape, internal channel and surface effect, efficient adsorption / desorption kinetics and solar energy direct drive heat storage are realized. The thermochemical energy storage composite material comprises a matrix with a bionic multi-scale mass transfer structure and hygroscopic inorganic salt uniformly loaded in the matrix, wherein the matrix is activated by KOH and then is loaded with the hygroscopic inorganic salt; the appearance of the base body imitates that of red blood cells, and the base body is in a single concave disc shape; and a vein-like layered directional vein network is arranged in the base body. The problems of moisture absorption and caking, slow mass transfer and low photothermal conversion efficiency of a traditional hydrated salt material are solved, and a new scheme is provided for efficient storage of renewable energy sources.

The invention discloses a rare earth doped zirconium titanium cobalt hydrogen storage material and a preparation method thereof, the chemical general formula of the zirconium titanium cobalt hydrogen storage material is Zr < 0.8 > Ti < 0.2-x > M < x > Co, x is 0-0.05, and M is a rare earth element of which the atomic radius is greater than that of Ti; the preparation method comprises the following steps: sequentially carrying out mixed smelting, crushing and grinding, vacuum treatment and activating treatment on the raw materials to obtain the hydrogen storage material. Rare earth elements are doped in the Zr0. 8Ti0. 2Co alloy, more hydrogen atom transmission channels are triggered through grain boundary and second phase regulation and control, and the diffusion speed of hydrogen atoms can be increased. The doped rare earth element can also reduce hydrogen atom adsorption energy and dehydrogenation performance energy barriers and improve hydrogen absorption and desorption kinetics, meanwhile, the rare earth element can also increase adsorption sites of hydrogen atoms, the hydrogen storage capacity is further improved, and the rare earth element can further optimize the microstructure of the hydrogen storage alloy and regulate and control the electronic structure so as to optimize the kinetics performance.

The invention relates to an alkali metal gas chamber anti-relaxation self-assembly molecular coating adsorption energy quantification method, which finally realizes the physical quantification of the anti-relaxation coating adsorption energy by establishing a contact angle and surface topography collaborative characterization model and combining an adsorption-desorption dynamic formula, and is characterized by comprising the following steps: 1) establishing a contact angle and surface topography collaborative characterization model; depositing organosilane on a gas chamber glass substrate by adopting a liquid phase self-assembly method to form an anti-relaxation coating sample; step 2, selecting a plurality of measuring points on the anti-relaxation coating sample, dropping a 1 [mu] L ultrapure water liquid drop on each measuring point, determining a polarization retention angle of each measuring point according to the liquid drop height and the liquid drop substrate radius obtained by a contact angle measuring instrument, and scanning a local area of the corresponding measuring point by using an atomic force microscope (AFM), extracting an arithmetic mean value Ra of the surface roughness parameter and a root-mean-square value Rq of the surface roughness parameter as quantitative indexes of the polarization maintaining cross section; and step 3, taking free energy formed by the molecular layer of the coating as coating adsorption energy delta G.

The invention relates to the technical field of hygroscopic hydrogel preparation and atmospheric water collection, in particular to hygroscopic hydrogel as well as a preparation method and application thereof, and the preparation method comprises the following steps: dissolving a hygroscopic polymer with a complexing group in water, then adding a material with thermal response hydrophilic-hydrophobic conversion, stirring and dissolving to obtain a polymer solution, and then adding the polymer solution into a reaction kettle to obtain the hygroscopic hydrogel. Adding a nano-porous material with complexing sites into the polymer solution, and carrying out primary crosslinking on the complexing groups on the gel main body material and the complexing sites on the nano-porous material with the complexing sites to form a uniformly dispersed gel precursor solution; hygroscopic salt is added into the gel precursor solution for gelation, the hierarchical pore hygroscopic hydrogel with a macroporous structure and nano micropores is obtained after freeze-drying, and a hydrogel network with rich hierarchical pores is prepared, so that the water vapor adsorption-desorption kinetics and water collection performance are greatly improved.

The present invention belongs to the technical field of hydrogen storage materials, and relates to a solid-state magnesium-based hydrogen storage material MgH2-CrOOH@CNT and a preparation method thereof. In the present invention, a novel carbon nanotube loaded with CrOOH nanoparticles is used as a catalytic material, and is ball-milled and mixed with MgH2 to prepare the magnesium-based hydrogen storage material MgH2-CrOOH@CNT. The present invention uses a simple process and mild conditions to prepare a high-performance CrOOH@CNT catalyst for catalyzing the hydrogen storage of MgH2. Finally, the hydrogen absorption and desorption temperature of the prepared composite material is greatly reduced compared with that of pure MgH2, achieving the common optimization and improvement of hydrogen absorption and desorption kinetics and the total amount of hydrogen absorption and desorption. At the same time, the effect of hydrogen absorption at room temperature can be achieved, and it has excellent hydrogen storage performance and broad commercial application prospects. Moreover, the preparation process of the present invention has low requirements for equipment and is easy to implement, and can be applied to industrial large-scale production.

Metal organic framework compositions and methods for O2 gas separations from ambient air and Ar gas stream purifications are provided. The metal-organic framework has the formula of CuX-MFU-4l, where X=2.2-2.7 and MFU=Metal- Organic Framework Ulm #4, large with optimized performance for Cu2.7-MFU-4l, (Cu2.7Zn2.3H0.4Cl0.9(btdd)3). The frameworks adsorb O2 from ambient air in the presence of water with both excellent cyclability and rapid adsorption and desorption kinetics. Differences in the kinetics of O2 and N2 desorption following adsorption allow for isolation of high-purity O2 following desorption, offering high-purity O2 without costly, multi-step separations. The framework Cu2.7-MFU-4l is further able to remove both N2 and O2 impurities from Ar streams.

The application provides a kind of test device and method of gas-liquid competitive adsorption under the simulation reservoir electric field environment, it is related to oil and gas field development experimental simulation technical field, the device includes QCM-D host computer, special electric field flow cavity, high voltage power supply, fluid injection system and signal isolation and shielding system;The method comprises: establishing baseline, monitoring crude oil adsorption kinetics, under the application of high voltage electric field, monitoring displacement gas competitive desorption kinetics, and generating evaluation results based on frequency and dissipation dual parameter changes.The application realizes real-time, in-situ, quantitative monitoring of gas-liquid competitive adsorption microprocess on the surface of QCM-D chip under the environment of kilovolt high voltage electric field for the first time through vertical transmission type non-contact electric field loading cavity and high voltage-weak signal isolation circuit, and can distinguish the different effects of electric field on mass desorption and interface rheological change, providing a reliable experimental tool and analysis method for revealing the micro mechanism of electric field enhanced oil displacement.

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.

This invention provides a catalyst for hydrogen storage materials, its preparation method, and its application. The catalyst comprises CeO2 nanorods and transition metal nanoclusters supported on the CeO2 nanorods; the transition metal nanoclusters include any two of Ni, Pd, Co, or Mn elements. In this catalyst, the CeO2 nanorods can form a strong metal-support interaction with the transition metal nanoclusters, synergistically improving the hydrogen storage kinetics of MgH2 material. Simultaneously, the transition metal nanoclusters containing two of the aforementioned elements can effectively improve the hydrogen absorption / desorption performance of MgH2. Therefore, by combining this catalyst with MgH2 material, the hydrogen desorption temperature of MgH2 can be reduced, the hydrogen absorption / desorption kinetics of MgH2 can be improved, and the cycling performance can be enhanced.

Achieving the selective and reversible adsorption of CO2 from humid, low partial pressures streams such as the flue gas resulting from the combustion of natural gas in combined cycle power plants ( 4% CO2) is challenging due to the need for high thermal, oxidative, and hydrolytic stability as well as moderate regeneration conditions to reduce the energy of adsorption / desorption cycling. Appending cyclic primary, secondary diamines, exemplified by 2-(aminomethyl)piperidine (2-ampd), to the metal-organic frameworks Mg2(dobpdc) (dobpdc4- = 4,4-dioxidobiphenyl-3,3-dicarboxylate), Mg2(dotpdc) (dotpdc4- = 4,4"-dioxido-[1,1':4',1"-terphenyl]-3,3"dicarboxylate) or Mg2(pc-dobpdc) (pc-dobpdc4-- = dioxidobiphenyl-4,4'-dicarboxylate) produces adsorbents of the classes EMM-44, EMM-45, and EMM-46, respectively, that display step-shaped adsorption of CO2 at the partial pressures required for 90% capture from natural gas flue gas at temperatures up to or exceeding 60 °C. Using a cyclic diamine in place of a diamine functionalized with bulky alkyl groups enables fast adsorption / desorption kinetics with sharp CO2 adsorption and desorption steps.

The invention relates to an easy-to-activate AB5 type multi-element doped modified hydrogen storage material and a preparation method and application thereof, the chemical general formula of the hydrogen storage material is LaxCeyNdzNiaFebMnc, x + y + z = 1, x is greater than or equal to 0.5, y is greater than or equal to 0 and less than or equal to 0.5, and z is greater than or equal to 0 and less than or equal to 0.5; a + b + c = 5, a > = 4, 0 < = b < = 1, 0 < = c < = 1, and at least two of y, z, b and c are not equal to 0. Compared with the prior art, the single-phase AB5 type hydrogen storage alloy with a hexagonal crystal form is prepared by synergistically replacing A site (La) by Ce / Nd and replacing B site (Ni) by Fe / Mn according to a specific proportion, the alloy has relatively high hydrogen storage capacity and rapid hydrogen absorption and desorption dynamic performance, the hysteresis of a hydrogen absorption and desorption platform is obviously improved, and rapid hydrogen absorption and the like can be completed without hydrogen absorption and desorption activation.

The invention relates to a self-extraction-mutual extraction synergistic low-temperature regenerative CO2 absorbent as well as a preparation method and application thereof, and belongs to the technical field of carbon dioxide capture. An absorbent system is composed of a secondary amine and tertiary amine compound amine solution in a set ratio, and a water phase is used as a polar medium to regulate phase equilibrium. The absorbent realizes a dynamic phase change behavior through molecular polarity gradient regulation and control: the absorbent presents an organic phase-water phase two-phase separation state in an initial low polarity state; cO2 is converted into a uniform single-phase state after absorption saturation; in the desorption process, a low-polarity double-phase state is reversibly recovered. The organic amine substance in the absorbent system causes a self-extraction-mutual extraction behavior based on polarity change, so that continuous separation from a uniform phase to two phases is realized. Due to the characteristic, the CO2 desorption dynamic performance under the low-temperature condition is obviously enhanced, the regeneration temperature is effectively reduced, and relatively high temperature rise heat and evaporation heat caused by high temperature are avoided.

The invention discloses a molecular dynamics simulation method for electron-induced gas desorption, and belongs to the technical field of molecular simulation. The method comprises the following steps: firstly, constructing an aluminum oxide molecular model, and then simulating adsorption equilibrium of hydrogen on the surface of aluminum oxide at different temperatures and air pressures by adopting a giant regular Monte Carlo method to obtain a stable adsorption configuration; then, based on the configuration, an electron force field is adopted to introduce explicit electron particles to simulate electron beam bombardment, and an electron-induced gas desorption kinetic process is simulated under a molecular dynamics framework; and finally, performing quantitative analysis on the desorption product. Through full-atom molecular dynamics simulation, coherent research from gas adsorption to electron-induced desorption is realized, the limitation that related experimental measurement is difficult and a micromechanism is difficult to reveal under a high-voltage condition is overcome, and an effective simulation tool is provided for deeply understanding a physical mechanism of dielectric surface gas desorption-induced discharge.

The application discloses a preparation method of a metal-catalyzed lithium borohydride composite hydrogen storage material, which comprises the following steps: mixing raw materials including lithium borohydride and a ferrocene salt, and performing ball milling to obtain the metal-catalyzed lithium borohydride composite hydrogen storage material; the ferrocene salt is selected from one or more of nickelocene, chromocene and manganocene. The preparation method disclosed by the application is simple and controllable, is suitable for large-scale industrial production, and more importantly, the prepared composite hydrogen storage material has the advantages of low hydrogen absorption and desorption temperature, good hydrogen absorption and desorption kinetics, high cycle stability and the like without reducing the high theoretical capacity of lithium borohydride.

The present application relates to a kind of dynamic crosslinking hygroscopic hydrogel and its preparation method.The raw materials include hydroxyl-containing water-soluble polymer material, boric acid crosslinking agent and hygroscopic salt material.The preparation method includes the preparation of gel precursor solution, the configuration of crosslinking agent solution, crosslinking reaction process and gelation process in mold.The borate ester bond crosslinking site in hydrogel can occur reversible hydrolysis reaction, and the crosslinking density of dynamic hydrogel is determined by the water content in gel.The dynamic crosslinking hygroscopic hydrogel with this characteristic has higher hygroscopic salt load and hygroscopic capacity than conventional covalent bond crosslinking hygroscopic hydrogel, faster hygroscopic / desorption kinetics performance and easy recycling, easy large-scale production characteristics.The present application also discloses the specific application of the dynamic crosslinking hygroscopic hydrogel, including solar air collection, closed space drying and dehumidification, evaporation heat dissipation and the like.

The invention relates to a preparation method and application of a biphase nanorod catalyst, and belongs to the field of hydrogen storage material catalysts.The preparation method comprises the following steps that ferric trichloride hexahydrate, cobaltous acetate tetrahydrate, nickel acetate tetrahydrate, sodium molybdate, ammonium metavanadate and terephthalic acid are weighed according to the molar ratio of 6: 6: 6: 6: 6: (1-2), and a mixture is obtained; adding the mixture into deionized water, stirring to obtain a homogeneous solution, carrying out hydrothermal reaction to form rod-like crystals, and finally obtaining light yellow precursor powder; the FeCoNiMoV-O / C biphase nanorod catalyst is obtained through reasonable proportioning, grinding, calcining and cooling of different raw materials, the FeCoNiMoV-O / C biphase nanorod catalyst has excellent catalytic performance, and the hydrogen absorption and desorption kinetics of MgH2 is remarkably improved.

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.

The invention discloses an Mg2Si-based hydrogen storage material and a preparation method thereof.The preparation method comprises the following steps that a mixture of Mg2Si powder / Ti powder and ball-milling beads are placed in a ball-milling tank, and hydrogen is inflated; a ball milling program is set as follows: the rotating speed of the ball mill is 150-400 rpm; and after the ball milling procedure is completed, the Mg2Si-based hydrogen storage material is obtained. Through Ti induction and a hydrogen-assisted high-energy ball milling technology, Mg2Si is successfully subjected to high-temperature ball milling under a mild condition; the method has the advantages that the high-efficiency hydrogenation is realized under the conditions that the pressure is 1.5 MPa H2 and an external heat source is not needed for heating, the conversion rate is as high as 76%, and the technical bottleneck that the traditional Mg2Si hydrogenation is difficult is solved; meanwhile, excellent hydrogen absorption and desorption kinetics and low-temperature hydrolysis hydrogen production performance are achieved.

The invention belongs to the technical field of adsorbents, and particularly relates to a CO2 adsorbent and a preparation method thereof.The preparation method comprises the following steps that S1, after an organic magnesium precursor and a calcium carbonate precursor are fully stirred in absolute methanol, a mixed solution is formed and dried, an intermediate product is obtained, then the intermediate product is calcined and decomposed, and a calcium-magnesium mixture is obtained; s2, adding waste lithium iron phosphate battery powder and sodium nitrate into the prepared calcium-magnesium mixture, then fully stirring and mixing in absolute methanol to obtain a mixed solution, and drying to obtain a composite MgO-based adsorbent; fe < + > contained in the waste lithium iron phosphate battery powder can regulate and control the adsorption-desorption dynamic performance of CO2 through the oxidation-reduction characteristic, and the reaction activation energy is reduced; li < + > migrates in a sodium nitrate molten salt system, so that the density of alkaline sites on the surface of MgO can be increased, and the chemical adsorption capacity on CO2 is enhanced. The adsorbent has the characteristics of high adsorption capacity, high adsorption rate, excellent cycle stability and the like.

The invention provides a silicon-carbon composite material and a preparation method thereof, a negative electrode and a lithium ion battery. The silicon-carbon composite material comprises porous graphitized carbon fibers and silicon particles embedded in pores of the graphitized carbon fibers. The graphitized carbon fibers in the silicon-carbon composite material not only provide enough space for accommodating silicon particles so as to relieve volume change of the silicon particles in lithiation and lithium removal processes, but also enhance conductivity of the silicon-carbon composite material and reduce energy barriers of lithium ion diffusion due to the graphitization characteristic of the graphitized carbon fibers, so that the lithium removal potential of the silicon-carbon composite material is reduced, and the lithium removal efficiency of the silicon-carbon composite material is improved. Therefore, the discharge energy of the whole battery is improved. Meanwhile, the porous structure of the graphitized carbon fiber remarkably increases the specific surface area of the silicon-carbon composite material and is beneficial to improving adsorption and desorption kinetics of lithium ions, so that the rate capability and the cycling stability of the silicon-carbon composite material are further improved.

The present application relates to the technical field of hygroscopic hydrogel preparation and its atmospheric water collection, and particularly relates to a kind of hygroscopic hydrogel and its preparation method and application, comprising the following steps: hygroscopic polymer with complexing group is dissolved in water, then material with thermal response hydrophilic-hydrophobic transition is added to stir and dissolve, to obtain polymer solution, add nanoporous material with complexing site to polymer solution, complexing group on gel main material and complexing site on nanoporous material with complexing site preliminary crosslinking is carried out, and uniform dispersed gel precursor liquid is formed;Hygroscopic salt is added to gel precursor liquid to gel, and after freeze-drying, hierarchical pore hygroscopic hydrogel with macroporous structure and nanometer micropore is obtained, the hydrogel network prepared by the present application has abundant hierarchical pores, which greatly improves water vapor adsorption-desorption kinetics and water collection performance.

The present application relates to a magnesium-based hydrogen storage material based on magnesium dihydride and copper vanadate and a preparation method thereof, and belongs to the technical field of hydrogen storage material preparation. The present application mainly coats Cu3(VO4)2 powder on the surface of MgH2 powder through ball milling, and uses Cu3(VO4)2 bimetallic oxide to synergistically catalyze and modify the Mg / MgH2 system, significantly improves the hydrogen absorption and desorption rate of MgH2, obtains a composite hydrogen storage material with excellent low-temperature hydrogen storage performance, and simultaneously achieves the common optimization and improvement of hydrogen absorption kinetics and the total amount of hydrogen absorption and desorption. Compared with single metal oxides and other forms of added bimetallic elements, the present application is to solve the problems of high hydrogen absorption and desorption temperature and slow kinetics of MgH2, realize fast hydrogen absorption and desorption kinetics at medium temperature, that is, realize hydrogen absorption at low temperature (100 DEG C), and have fast hydrogen desorption kinetics at a relatively low hydrogen desorption temperature (for example, 225 DEG C, 250 DEG C).

The invention discloses a high-cycle-stability absorption liquid for capturing carbon dioxide and a preparation method and application thereof, and relates to the technical field of gas separation and purification, the absorption liquid comprises a main absorption component, an auxiliary absorption component, an active component, an additive and a solvent; the additive is 4, 4 '-dihydroxy diphenyl ether and 3-methyl-3H-imidazole methyl [4, 5-b] pyridine-6-carboxylate; the solvent is water. The absorption liquid provided by the invention can be used for capturing carbon dioxide in industrial waste gas, has excellent carbon dioxide absorption and desorption capacity and rapid absorption and desorption kinetics, improves the CO2 absorption load capacity, has excellent absorption and desorption rate and low-temperature capturing performance, and has better stability in long-period operation. In addition, the method solves the problems of cost, energy consumption, environment compatibility and the like, and has a good application prospect.

The invention relates to the use of a lamellar uranium-bearing material intercalated with molecules of an organic compound, which, thanks to this intercalation, is capable of reversibly and permanently absorbing water molecules, with high sorption / desorption kinetics and high energy density, making it a material of choice for thermal energy storage by water sorption. It also relates to a thermal energy storage process using this material, a thermal energy storage device for implementing this process, and a new intercalated lamellar uranium-bearing material. Applications: any field where thermal management needs to be optimized, whether for buildings, industrial structures, or urban heating networks, by recovering thermal energy produced on-site and subsequently redistributing it, according to needs, to that site or any other site.

The invention relates to the technical field of hydrogen storage materials, in particular to a MgH2-containing zirconium carbide-based MOF composite material as well as a preparation method and application thereof. The zirconium carbide-based MOF composite material comprises C / Zr-BTC and MgH2, the C / Zr-BTC is obtained by calcining and carbonizing Zr-BTC, and the specific surface area of the MOF composite material is 1105-1623 m < 2 > / g. The MgH2-C / Zr-BTC composite material is prepared by loading a high-capacity hydrogen storage material MgH2 to channels and surfaces of C / Zr-BTC through a mechanical ball milling method, in the composite material, the high specific surface of Zr-BTC provides rich physical adsorption sites for hydrogen molecules, the channel structure of Zr-BTC effectively limits growth and agglomeration of MgH2 nanoparticles, and the hydrogen absorption and desorption kinetics of MgH2 is remarkably improved; and meanwhile, by introducing MgH2, the total hydrogen storage capacity of the composite material is greatly improved.

The application discloses a kind of pollution adsorbent particle residual adsorption amount determination method and system, it is related to pollution adsorbent particle desorption research technical field.The application constructs improved Lan* desorption kinetics model;Based on origin software and desorption kinetics experimental data, the coefficient in improved Lan* desorption kinetics model is fitted, and residual adsorption amount prediction model of pollution adsorbent particle is obtained;Target desorption time is substituted into residual adsorption amount prediction model of pollution adsorbent particle, and the residual adsorption amount of unit mass pollution adsorbent particle at target desorption time is determined.The application can quickly complete the prediction of the residual adsorption amount of adsorbate of unit mass adsorbent at any desorption time by introducing solid-liquid ratio to construct improved Lan* desorption kinetics model.

This invention provides a method for preparing a multidimensional powdered hydrogen storage material with high mass transfer and high heat transfer, relating to the field of hydrogen storage material preparation technology. The method includes the following steps: selecting hydrogen storage material particles as the initial hydrogen storage material, selecting a metal mesh or foam material as a two-dimensional or three-dimensional framework, and adding a pore-forming agent to an organic solvent containing a high-temperature resistant resin to obtain a binder solution; under the assistance of the binder solution and ultrasonic vibration, uniformly filling the pores of the framework with the hydrogen storage material particles; and heating and curing the filled material under an argon atmosphere to obtain the multidimensional powdered hydrogen storage material with high mass transfer and high heat transfer. Compared to the initial powdered hydrogen storage material, the multidimensional powdered hydrogen storage material prepared by this invention has a thermal conductivity increased by more than 7 times, the time to absorb hydrogen to 90% saturation capacity is shortened by 22% to 54% compared to traditional processes, and the effective hydrogen storage capacity, hydrogen absorption and desorption kinetics, and cycle life of the initial powdered hydrogen storage material are significantly improved.

A detection system and analysis method for the intrinsic kinetics law of medium dehydration, which relates to the field of dehydration rate testing. The analysis method for the intrinsic kinetics law of medium dehydration obtains the dehydration rate and Darcy seepage resistance of the medium to be detected in the rapid dehydration stage, calculates the permeability, pre-exponential factor and dehydration activation energy of the medium to be detected based on the dehydration rate and Darcy seepage resistance of the medium to be detected in the rapid dehydration stage, and then predicts the dehydration rate of the medium to be detected in other dehydration stages. The detection system and analysis method for the intrinsic kinetics law of medium dehydration respectively use a seepage model and a desorption kinetics model to invert the intrinsic dehydration kinetic parameters of the medium according to the different dehydration mechanism mechanisms in different stages of the medium to be detected, so as to predict the dehydration rate of the medium under different working conditions based on the intrinsic dehydration kinetic parameters of the medium, and solves the problems that the traditional medium dehydration test method can only obtain the apparent dehydration rate and the test results vary with the test conditions and lack universality, etc.

The present invention discloses a high-capacity and long-life BCC-type high-entropy hydrogen storage alloy and a preparation method thereof. The general chemical composition formula is Ti x Nb y Cr z Mo r , where x, y, z, and r are atomic ratios, and 0.30 ≤ x ≤ 0.35, 0.05 ≤ y ≤ 0.10, 0.35 ≤ z ≤ 0.50, 0.10 ≤ r ≤ 0.15; the above high-entropy hydrogen storage alloy is mainly obtained by sequentially undergoing batching, melting, high-temperature solution treatment, and gas quenching. The preparation method of the present invention is simple, the process is easy to control, the structure of the obtained material is stable, the alloy composition is uniform, the grain size is uniform, and it has excellent hydrogen absorption / desorption capacity, hydrogen absorption and desorption kinetics, and cycle life. The maximum hydrogen absorption capacity is as high as 3.6 wt.%, the maximum reversible hydrogen desorption capacity reaches 2.51 wt.%, and the capacity retention rate after 100 hydrogen absorption and desorption cycles is greater than 90%.