5results about How to "High hydrogen storage density" patented technology

This invention provides a double-layer adsorption high-pressure hydrogen storage tank system and method, relating to the field of gas storage tank technology. Addressing the problem that current hydrogen storage systems using single-layer structures cannot meet demand, this invention configures a hydrogen storage tank with a double-layer structure. Different types of adsorption materials are filled between the inner and outer tanks, and within the inner tank, respectively. This allows for relatively independent temperature and pressure control, thereby achieving synergistic optimization of hydrogen storage performance, increasing hydrogen storage density, and reducing the operating pressure of the hydrogen storage tank, thus improving the safety and economy of the hydrogen storage system.

This disclosure relates to a method for storing and releasing hydrogen, the method comprising: pressurizing input hydrogen from a hydrogen source to obtain pressurized hydrogen; introducing the pressurized hydrogen into a solid hydrogen storage unit, wherein when the pressure of the input hydrogen is greater than a pressure threshold, the pressurized hydrogen is cooled to obtain first low-temperature hydrogen; introducing the first low-temperature hydrogen into the solid hydrogen storage unit; when the pressure of the input hydrogen is less than the pressure threshold, the pressurized hydrogen is heated to obtain high-temperature hydrogen; introducing the high-temperature hydrogen into the solid hydrogen storage unit; and discharging hydrogen from the outlet of the solid hydrogen storage unit; the solid hydrogen storage unit includes multiple solid hydrogen storage tanks internally filled with solid hydrogen storage material, and at least one solid hydrogen storage tank stores hydrogen. Using the method of this disclosure, flexible storage and release of hydrogen can be achieved, with high hydrogen storage density, stable hydrogen supply pressure, and a significant reduction in the footprint of hydrogen storage equipment.

The utility model discloses a vehicle-mounted hydrogen storage tank and belongs to the field of hydrogen storage and transportation. The vehicle-mounted hydrogen storage tank comprises a sealing shell and a hydrogen storage tank, wherein a cavity is formed in the sealing shell; the air guide pipes are arranged in the cavity; a hydrogen conveying channel is formed in the gas guide pipe, and a plurality of gas outlets are formed in the surface; the hydrogen input and output interface is communicated with the hydrogen conveying channel; wherein a plurality of solid hydrogen storage materials can be arranged on the gas guide tube in a penetrating manner to limit the radial and axial displacement of the gas guide tube. According to the vehicle-mounted hydrogen storage tank, the gas guide pipe is used as a limiting element and a gas transmission element, so that the abrasion between hydrogen storage media and between the hydrogen storage media and the buffering element can be reduced in the transportation process, the loss of the hydrogen storage media is avoided, the hydrogen charging and releasing speed can be improved, and the transportation is convenient and safe.

The application discloses a kind of solid hydrogen storage materials and preparation method thereof.The material is dense solid composite, by hydrogen production agent, non-noble metal boride catalyst and composite lithium cobalt oxide carrier is formed by pressure molding, and water can be supplied hydrogen.Hydrogen production agent is based on sodium borohydride or potassium borohydride;The carrier is modified composite lithium cobalt oxide, and has carrier and catalytic function.This application eliminates liquid solvent and porous support structure, builds synergistic catalytic system, to improve mass and volume hydrogen storage density, and ensure stable hydrogen production rate.Preparation method only involves solid phase mechanical mixing and pressing molding, and process is simple, suitable for large-scale production.The material has the characteristics of portable, safe, and can be used as an ideal hydrogen source, applied to hydrogen fuel cell and other fields.

This invention discloses a method for hydrogen production, storage, and refueling, comprising: S1, electrolyzing water to produce oxygen and hydrogen, with waste heat stored in a heat storage device; S2, the produced oxygen entering an oxygen storage tank, with waste heat stored in the heat storage device; S3, the produced hydrogen entering a first solid hydrogen storage material, with waste heat stored in the heat storage device; S4, when the first solid hydrogen storage material is full, hydrogen enters a second solid hydrogen storage material, with waste heat transferred to the first solid hydrogen storage material, enabling the first solid hydrogen storage material to refuel at a hydrogen refueling station; S5, when the second solid hydrogen storage material is full, hydrogen re-enters the first solid hydrogen storage material, with waste heat transferred to the second solid hydrogen storage material, enabling the second solid hydrogen storage material to refuel at a hydrogen refueling station; S6, repeating steps S4 and S5, until the reaction stops, the heat storage device transfers heat to the first and second solid hydrogen storage materials, causing them to release remaining hydrogen into the hydrogen refueling station. This invention achieves highly efficient hydrogen storage and refueling operations.