72results about How to "High hydrogen storage density" patented technology

Belonging to the technical field of new energy, the invention discloses a fuel cell standby power high pressure hydrogen supply system. The system includes a hydrogen self-feeding unit, a hydrogen filling and receiving unit, and a security control unit. The hydrogen self-feeding unit and the hydrogen filling and receiving unit are connected by pipelines, and the hydrogen filling and receiving unit and the security control unit are connected by leads. The invention provides a safer and more effective high-density fuel cell standby power high pressure hydrogen supply system, the greatest characteristics of which lie in that while substantially improving the system hydrogen storage density, the system application scope is expanded, the usage convenience and safety of the system are enhanced, and meanwhile, by optimizing the design and manufacturing process of a composite hydrogen storage bottle, the manufacturing cost of a high pressure hydrogen storage bottle used for standby power is substantially reduced.

The invention discloses an online high-purity hydrogen preparation system for a fuel cell. The online high-purity hydrogen preparation system comprises a methyl alcohol box as well as a raw material box and a catalytic burner which are connected with the methyl alcohol box through a methyl alcohol metering pump, wherein a fuel cell discharge water inlet is formed in the raw material box, an oxygen inlet is formed in the catalytic burner, an ethanol water metering pump and a heat exchanger are sequentially connected onto the raw material box, a vaporizer is connected onto the heat exchanger, a reforming reactor is connected onto the vaporizer, a palladium film purifier is connected onto the reforming reactor, and the palladium film purifier is connected with the catalytic burner; the invention further discloses a control method of the system. According to the system provided by the invention, online hydrogen supplying is performed through a manner of using a methanol water reforming reaction to produce hydrogen, the yield of pure hydrogen is controlled through adjusting the flow of an ethanol water mixture; the method has the characteristics of high hydrogen storage density, high hydrogen purity, low energy consumption, compact structure, simpleness and convenience in start-stop controlling, easiness in implementing modular design and the like.

A vehicle-used high-density complex storage system of hydrogen/natural gas dual fuel comprises a vehicle control module, a storage tank with a double-layer structure, and a controller, as well as a natural gas supply pipeline valve module and a hydrogen supply pipeline valve module both connected with the controller, wherein the storage tank with the double-layer structure comprises an outer storage tank, an inner storage tank arranged inside the outer storage tank, and an interlayer; the outer tank is connected with the natural gas supply pipeline valve module to realize refueling, storing and supplying liquefied natural gas; the inner storage tank is filled with a nanopore material; the inner storage tank is connected with the hydrogen supply pipeline valve module to realize refueling, storing and supplying hydrogen fuel; the inner storage tank adopts the cold energy of the liquefied natural gas to provide a low-temperature environment for the storage of hydrogen; through the combination with the nanopore material hydrogen storage material, the hydrogen storage density of the inner storage tank is greatly increased; gasified natural gas of the outer storage tank can serve as a fuel to enter an internal combustion engine, and the dual fuel complex storage system can realize the gradient utilization of the stored energy of the gas fuel, so that the efficiency of energy utilization is greatly increased.

The invention discloses a hydrogen power generation system capable of producing and storing hydrogen. Biomass resources are adopted as the raw materials, biomass thermochemical hydrogen production is utilized to decompose all agricultural straws into hydrogen-rich gas, and hydrogen in the hydrogen-rich gas is stored in an organic hydrogen storage material through an organic hydrogen storage device. The organic hydrogen storage material involved in the invention is composed of 2-methyl-[1, 8]-naphthyridine, diazafluorene and N-methylindole, has the characteristics of high hydrogen storage density and appropriate dehydrogenation temperature, the hydrogen released from the organic hydrogen storage device can be directly used for fuel cells, and hydrogen energy can be converted into electric energy or directly used for heat supply through hydrogen fuel cells, thus enhancing the economical efficiency of energy utilization. The power generation system provided by the invention is convenient and flexible, is suitable for establishment of a distributed energy system, and is applicable to energy development in areas away from the power grid and rich in biomass resources. The system combines biomass power generation technology with hydrogen technology, utilizes hydrogen energy as the biomass power generation intermediary, combines the high efficiency and flexibility of fuel cells, and realizes clean and efficient conversion of biomass to electricity.

The invention discloses a method for compositing storage hydrogen from a hydrogen cage-type compound; organic matter serves as hydrogen storage material, and simultaneously two methods are adopted to composite the storage hydrogen; the hydrogen not only can exist on a cage-type main molecule body in the form of a proton, but also can be stored in a cage-type hole in the form of a hydrogen molecule. The hydrogen storage material of the invention stores hydrogen in two ways, and the alcohol and the phenol of the main skeleton molecule body which forms hydrate store the hydrogen in the form of protons; hydrogen bonds between the organic molecules interact to form an inclusion compound, and the hydrogen molecules serve as guest molecules and are wrapped in the cage-type hole; the gas storage density is high and can be improved by 100 to 300 percent compared with pure hydrate storage hydrogen; and the gas storage conditions are mild.

The invention relates to hydrogen storage and hydrogen production technologies, specifically to a method for slow release of hydrogen by a reaction between solid sodium borohydride and a crystalline hydrate. The solid sodium borohydride and the crystalline hydrate react for slow release of hydrogen. Hydrogen production raw materials are completely solids and are composed of two parts, namely a solid fuel and a crystalline hydrate. The weight ratio of the solid fuel to the crystalline hydrate is 1: (3.5-7.3). In the solid fuel, alkali content is 0-2 wt% and the balance is sodium borohydride. A hydrogen production method is as follows: the solid fuel and the crystalline hydrate are mixed so as to release hydrogen. The method requires no catalyst and has advantages of simple operation, low requirement on equipment, high conversion rate of a fuel and the like. By the method, a high-efficient, continuous and stable hydrogen source can be provided for a micro fuel cell.

The invention discloses a portable hydrogen generator, and particularly relates to a portable hydrogen generator which is fast in hydrogen production speed and high in safety. The portable hydrogen generator comprises two airtight containers for storing a hydrogen production mixture and a liquid respectively, interconnected valve control pipelines, and respective valve control liquid supplement and hydrogen discharge channels, wherein an air pocket and/or a mechanical stirring device driven by virtue of an air pressure change is arranged below the hydrogen production mixture in the airtight container for storing the hydrogen production mixture, thus effectively eliminating product agglomeration in the reaction for hydrogen production, having extremely high safety, and omitting multiple safety protection components. The equipment is very simple, capable of being produced to be a miniaturized safety protection device, and convenient to carry and use.

The invention belongs to the field of hydrogen storage material preparation, and particularly relates to a preparation method of a LiMgN-containing high-capacity hydrogen storage material. The preparation method comprises the following steps: a. uniformly mixing Li3N powder and MgH2 powder in a molar ratio of 1:1 to 2:1, and putting in a ball-milling tank; and b. ball-milling on a ball mill by adopting a mechanical alloying method and a mechanical milling method, thus obtaining the LiMgN and LiH mixture, wherein the weight ratio of grinding balls to the mixed raw material is 15: 1 to 40: 1, argon is charged for protection, the ball milling lasts for 2-48 hours, and the rotating speed of the ball milling is 300-500rpm. The LiMgN obtained by the method is granular, the size of the LiMgN is 40-50 nanometers, the phase content of LiMgN reaches 73.8wt%, and the hydrogen storage capacity reaches 3.2wt%. The raw materials used in the method are easy to obtain, the preparation process is simple, and the operation is convenient. According to the preparation method, no surface active agents, catalysts and the like do not need to be added in the reaction process, and the high-purity product is easily obtained.

The invention relates to a hydrogen storing and producing technology, in particular to a system and method for producing hydrogen by controllably hydrolyzing sodium borohydride/aluminum powder mixed solid fuel. The system for producing hydrogen consists of solid fuel and liquid fuel, wherein the solid fuel is a mixture of sodium borohydride, aluminum powder and alkali; and the liquid fuel is a transition metal saline solution. In the method for producing hydrogen, the liquid fuel is taken as a hydrogen-producing reaction control preparation and is added into the solid fuel in a controlling manner, so that the immediate controllable hydrogen production can be realized according to the requirement. According to the system and method for producing hydrogen by hydrolyzing the mixed solid fuel, which are provided by the invention, the problems that the hydrogen production efficiency is low, the hydrogen production cost is high, and the like in the prior art can be solved; and the system and method have the advantages of high hydrogen production efficiency, favorable reaction controllability, high fuel conversion rate, simplicity and convenience in operation, relatively-low hydrogen production cost, and the like and can provide a moving hydrogen source for hydrogen combustion vehicles and various military and civil mobile and portable power supplies.

The invention belongs to the energy source material field, particularly relating to the method of catalytic decomposition for hydrogen release by the alloocimene hydrogen-storing material C60H36. Adding the C6OH36 and catalyst and solvent into the nuclear magnetic tube, cooling in the liquid nitrogen to solidify the reactant, vacuum-pumping the nuclear magnetic pipe with vacuum pump, then closing the vacuum pump to make the solidified liquid in the nuclear magnetic pipe be heated slowly for total dissolution, putting the nuclear magnetic pipe into the liquid nitrogen for cooling, repeating the steps for times and sealing the pipe, then reacting under temperature of 25-200 Deg C or undrer ultraviolet irradiation for some time to generate hydrogen, detecting the proton magnetic spectrum on which the hydrogen signal can be seen. The hydrogen content of C6OH36 is as high as 4.8 wt%, 403 liter hydrogen can be generated by 1 mole C6OH36 under standard condition, so the hydrogen-storing density is high and safe by using C6OH36.

The invention belongs to the technical field of energy materials, and particularly relates to a preparation method of a multi-component hydrogen storage composite material. The preparation method comprises the following steps that 1, urea, diammonium hydrogen phosphate, hexadecylsulfonic acid sodium salt and sodium polyacrylate are mixed, a mixed salt solution of indium chloride, stannous chloride, calcium nitrate and bismuth nitrate is dropwise added, stirring is carried out for 12-24 hours, suction filtration is carried out, so that a hydrogen storage material precursor is obtained; 2, vacuum drying is carried out on the hydrogen storage material precursor at the temperature of 120 DEG C, the hydrogen storage material precursor is uniformly mixed with LiAlH4, and high-temperature reduction is carried out under a hydrogen atmosphere; and 3, the reduced product is washed with water, washed with an acetic acid aqueous solution and then dried, so that the multi-component hydrogen storagecomposite material is obtained. A PCT relation tester is sued for testing the hydrogen absorption performance and the hydrogen desorption performance of the multi-component hydrogen storage compositematerial, and the hydrogen storage density per unit mass is measured to be higher than 13.6%.

The invention relates to a liquid hydrogen vaporization device, and specifically relates to a liquid hydrogen vaporization and self-pressurizing device. The liquid hydrogen vaporization and self-pressurizing device is used in the process of vaporizing liquid hydrogen into gasified hydrogen through an evapourizer and increasing the pressure of the hydrogen to form high-pressure hydrogen. When applied to the hydrogen energy field, the liquid hydrogen vaporization and self-pressurizing device can be specifically applied in hydrogen refueling stations adopting vaporization and pressure increasingof transported liquid hydrogen. When the high-pressure liquid hydrogen vaporization device is used for vaporizing the liquid hydrogen and achieving self-pressurizing, the pressure ranges from 10MPa to200MPa, a hydrogen compressor is not needed, and energy consumption is reduced. The invention further relates to three ways of filling the liquid hydrogen into the high-pressure liquid hydrogen vaporization device. In the two ways, pressure difference squeezing is adopted, and the liquid hydrogen in a high-pressure liquid hydrogen storage tank is conveyed into the high-pressure liquid hydrogen vaporization device; in the other way, the liquid hydrogen is conveyed to the high-pressure liquid hydrogen vaporization device through a liquid hydrogen high pressure pump. Cold energy of the liquid hydrogen is fully utilized by the liquid hydrogen vaporization and self-pressurizing device. Compared with prior equipment, the liquid hydrogen vaporization and self-pressurizing device can work withoutthe hydrogen compressor in the liquid hydrogen vaporizing and self-pressurizing process, and energy consumption is reduced obviously.

The invention discloses a carbonic composite hydrogen storage alloy and a preparation method thereof, a composite solid hydrogen storage rank made from the carbonic composite hydrogen storage alloy, and a method for performing hydrogen storage performance testing on the composite solid hydrogen storage tank. The carbonic composite hydrogen storage alloy is prepared from, by mass, 90-98% of hydrogen storage alloy powder and 2-10% of carbon materials. The method for preparing the carbonic composite hydrogen storage alloy comprises the following steps of preparing the hydrogen storage alloy powder, preparing the carbon materials and mixing the carbon materials and the hydrogen storage alloy powder to obtain the carbonic composite hydrogen storage alloy. The prepared composite solid hydrogen storage tank can be used for the fields of hydrogen purification, fuel cell hydrogen source storage, fixed energy storage and the like.

The invention discloses a carbon nanometer crystal hydrogen storage material and the making method. The constituents of the material includes 60-90wt% coal based carbon with hexagonal net grid layer crystal structure and the particle diameter is 20-100nm, 10-40wt% of one or several metal from Na, Al, Ti, V, Cr, Fe, Ni, Zn, Mo, and Pd. The method includes the following steps: taking alkali washing and acid washing to coal, after 1000-1600 degree centigrade carbonization, adding the metal powder, under 0.5-3MPa hydrogen pressure, taking ball milling for 0.5-8h. It has the advantages of large hydrogen storage density, low raw material cost, simple technology, etc.

The invention discloses an online hydrogen supply system based on alcohol fuel reforming reaction. The system comprises a raw material box, a heat exchanger connected with the raw material box througha raw material metering pump, a hydrogen production- purification integrated reactor connected with the raw material box through a fuel metering pump, an air pump connected to the hydrogen production-purification integrated reactor, a cooler and a hydrogen storage tank connected to the cooler, wherein the hydrogen production-purification integrated reactor comprises a vaporization chamber, a reforming reaction chamber, a catalytic combustion chamber, a hydrogen purification chamber, a temperature sensor and a reforming product gas conveying coil, and the reforming reaction chamber, the catalytic combustion chamber and the hydrogen purification chamber are of cylindrical sleeve type structures and are sequentially arranged from outside to inside. The hydrogen supply system has the advantages of being high in hydrogen storage density, small in size and weight, wide in raw material source, wide in application range, capable of producing and using hydrogen immediately and the like.

The invention discloses a pure water hydrogen production and direct liquid hydrogen storage and hydrogenation integral device and a control method. The device comprises a direct hydrogenation electrolytic cell, a deionization circulation system and a liquid organic hydrogen storage material circulation system which are connected with a power supply, wherein a micro-pore titanium plate, an electrolyzed water catalysis layer, a proton exchange membrane and a novel proton/electron conductor catalysis layer with pores are sequentially arranged inside the direct hydrogenation electrolytic cell; thedeionization circulation system consists of a temperature sensor T1, an oxygen gas-liquid separator, a deionization water tank, a water pump, a flow sensor F1 and a pressure sensor P1 which are connected in sequence; the temperature sensor T1 and the pressure sensor P1 are respectively connected with one end of the micro-pore titanium plate; the liquid organic hydrogen storage material circulation system consists of a pressure sensor P2, a hydrogen gas-liquid separator, a liquid organic hydrogen storage material storage tank, a circulation pump, a flow sensor F2 and a temperature sensor T2 which are connected in sequence; the temperature sensor T2 and the pressure sensor P2 are respectively connected with one end of the pores. The device is low in energy consumption and high in hydrogen storage efficiency.

The invention discloses a small and light cryogenic high-pressure hydrogen storage device. The small and light cryogenic high-pressure hydrogen storage device comprises an inner container and an outerbarrel, wherein the inner container is located in the outer barrel and wrapped by carbon fibers in a full winding mode; the outer side of a carbon fiber layer is further wrapped by a reflection heatinsulation layer; a hydrogen introducing pipe is arranged in an interlayer between the inner container and the outer barrel; one end of the hydrogen introducing pipe is communicated with the inner container from the head of the inner container; then the hydrogen introducing pipe is arranged around the inner container for a circle from the head of the inner container to the tail of the inner container and then towards the head of the inner container; then the other end of the hydrogen introducing pipe penetrates through the head of the outer barrel to be communicated with one end of a hydrogensupply pipe on the outer side of the head of the outer barrel; a first stop valve is arranged on the hydrogen supply pipe; a filling pipe is communicated to the hydrogen supply pipe between the firststop valve and the outer barrel; a second stop valve is arranged on the filling pipe; and the interlayer between the inner container and the outer barrel is further filled with aerogel and vacuumized.The device can improve the cruising ability of a small machine, and is light in weight, low in cost, safe, reliable and long in hydrogen storage maintaining time.

The invention discloses a small and light cryogenic high-pressure hydrogen storage power supply system. The system comprises a hydrogen fuel cell, and also comprises a cryogenic high-pressure hydrogenstorage device for storing supercritical hydrogen, a heater, a pressure reducing valve and a storage battery, a hydrogen supply pipe of the cryogenic high-pressure hydrogen storage device is connected with an inlet of the heater through a pipeline, an outlet of the heater is connected with an inlet of the pressure reducing valve through a pipeline, an outlet of the pressure reducing valve is connected with a hydrogenation port of the hydrogen fuel cell through a pipeline, the hydrogen fuel cell is connected with the storage battery through a circuit, the hydrogen fuel cell can charge the storage battery, the storage battery is connected with the heater through a circuit, and the storage battery can supply power to the heater. The small and light cryogenic high-pressure hydrogen storage power supply system is long in cruising ability, light in weight, low in cost, safe, reliable and long in hydrogen storage maintaining time.

It relates to a magnesium or oil coke nanometer composite hydrogen storing material. The material is made oil coke with 30wt%-60wt% grain size 10-100nm, 2wt%-15wt% catalyst Cu,Al,Fe,Co, Ni,Pd,Mn, either one of them or several with the combination of magnesium. It bakes oil coke and catalysts in 660-1600DEG C temperature for one hour, ball grinding with magnesium powder in 0.5-3MPa hydrogen for 0.5-5 hours. It features in the high density of hydrogen of the material, with moderate hydrogen drawing and releasing, low cost in material and simple making process.

The invention belongs to the technical field of inorganic porous materials, and particularly relates to a magnesium hydride hydrogen storage composite material containing a porous material and a preparation method thereof. The magnesium hydride hydrogen storage composite material containing the porous material is formed by compounding magnesium hydride and the porous material, the weight ratio ofthe magnesium hydride to the porous material is (0.1-1.2): 1, the porous material is one or more of graphite, SiO2 or Al2O3, and The method comprises the following steps: mixing the magnesium hydridewith the porous material; and compressing the mixture to form the magnesium hydride hydrogen storage composite material. According to the invention, the porous material with adjustable aperture is used as a carrier, so that the hydrogen storage performance of magnesium hydride is combined with excellent pore channels, high specific surface area and the like of the porous material, and the hydrogenstorage material has good characteristics in the aspects of hydrogen adsorption and desorption kinetics. The hydrogen storage material is compositely formed in a compression mode, the hydrogen storage density per unit volume can be improved, and the mechanical strength is improved.

The invention discloses NaBH4 sponge and a preparation method thereof. The preparation method comprises steps that a transition metal salt catalyst and a NaBH4 material are mixed and dissolved in an amine organic solvent at the same time, the mixture is evenly mixed and filled in the sponge, and the NaBH4 sponge is obtained after the solvent in the sponge is completely removed; the NaBH4 materialand the transition metal salt catalyst are uniformly mixed in the NaBH4 sponge on a nanometer scale. When water is added to NaBH4 sponge, NaBH4 is subjected to a hydrolysis reaction rapidly under theaction of a catalyst, water can be conveyed rapidly and effectively through the water absorption effect of the sponge, all parts in the system make uniform contact with water, and the hydrogen generation rate is more stable.