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CN-117553231-B - Solid-state hydrogen storage device

CN117553231BCN 117553231 BCN117553231 BCN 117553231BCN-117553231-B

Abstract

The invention relates to a solid-state hydrogen storage device, which comprises a hydrogen storage device tank body, a valve and a filter plate, wherein a hydrogen storage material is arranged in the hydrogen storage device tank body, and comprises a hydrogen storage material A and a hydrogen storage material B. The solid hydrogen storage material is commonly and easily obtained, does not need special treatment or other non-hydrogen storage material catalysts, is easy to operate, and can reduce cost and energy consumption.

Inventors

  • PU CHAOHUI
  • WU ZHU
  • XU XIAOOU

Assignees

  • 中国科学院上海微系统与信息技术研究所

Dates

Publication Date
20260505
Application Date
20231025

Claims (9)

  1. 1. The solid-state hydrogen storage device comprises a hydrogen storage device tank body (1), a valve (2) and a filter plate (3), and is characterized in that a hydrogen storage material is arranged in the hydrogen storage device tank body (1), the hydrogen storage material comprises a hydrogen storage material A (4) and a hydrogen storage material B (5), the hydrogen storage material A (4) and the hydrogen storage material B (5) are filled in layers but are in direct contact at the junction, the hydrogen storage material A (4) is filled at the upper part of the hydrogen storage device tank body (1) near the valve end, the hydrogen storage material B (5) is filled at the lower part of the hydrogen storage device tank body (1), the filter plate (3) has the filtering precision of 0.5-3 mu m, the hydrogen storage material A (4) is one or more of rare earth AB 5 、AB 3 、AB 3.5 type hydrogen storage materials, and the hydrogen storage material B (5) is one or more of titanium type AB, AB 2 and V-based BCC type hydrogen storage materials; the activation, hydrogen absorption and desorption circulation and regeneration treatment of the hydrogen storage device tank body (1) are carried out in a water bath environment at room temperature to 100 ℃.
  2. 2. The solid state hydrogen storage device according to claim 1, wherein the filter sheet (3) is provided between the valve (2) and the hydrogen storage material a (4) and is fixed to a vent hole of the valve (2).
  3. 3. The solid-state hydrogen storage device according to claim 1, wherein hydrogen in the hydrogen storage device tank body (1) is only fed and discharged through the valve (2), and the filter plate (3) is used for separating hydrogen storage material powder and hydrogen; the filter plate (3) is formed by sintering metal powder metallurgy or pressing a metal wire mesh, and a sealing gasket is arranged above the filter plate (3).
  4. 4. The solid state hydrogen storage device of claim 1, wherein the hydrogen storage material comprises 5% -50% of hydrogen storage material A (4) and 50% -95% of hydrogen storage material B (5) by weight.
  5. 5. The solid state hydrogen storage device of claim 1, wherein the hydrogen storage material a (4), the hydrogen storage material B (5) are particles or powder.
  6. 6. The solid state hydrogen storage device of claim 1, wherein the hydrogen storage material a (4) has a weight hydrogen storage density of 1.4 wt% to 1.7wt%.
  7. 7. The solid state hydrogen storage device of claim 1, wherein the regeneration treatment temperature of the hydrogen storage material a after activation and poisoning is less than or equal to 100 ℃.
  8. 8. The solid state hydrogen storage device of claim 1, wherein the hydrogen storage material B (5) has a weight hydrogen storage density of 1.8 wt% to 3.8wt%.
  9. 9. The solid state hydrogen storage device of claim 1, wherein the hydrogen storage material B is difficult to activate and the post-poisoning regeneration treatment temperature is not less than 100 ℃.

Description

Solid-state hydrogen storage device Technical Field The invention belongs to the field of hydrogen storage, and particularly relates to a solid-state hydrogen storage device. Background The hydrogen energy plays an important role in promoting the economic society to realize low-carbon environment-friendly development, the preparation, storage and application of the hydrogen are challenged, the construction of a hydrogen energy system is still to be perfected, wherein the storage and transportation technology of the hydrogen is a relatively weak link in the development of the hydrogen energy, and the hydrogen energy utilization is key to the practical, large-scale and industrialization. Compared with high-pressure gaseous hydrogen storage and low-temperature liquid hydrogen storage, solid material hydrogen storage has the advantages of high volume hydrogen storage density, good safety, mild operation conditions and the like, and has been paid attention to gradually and put into practical use. At present, the following problems exist in the application of the solid-state hydrogen storage technology and the device: (1) High density hydrogen storage material activation problem The Ti-based and V-based BCC high capacity hydrogen storage materials, represented by AB, AB 2 types, are very difficult to activate during the initial hydrogen absorption phase, and generally require high temperature or long incubation to activate step by step, which presents a significant challenge for practical applications of solid state hydrogen storage devices. (2) Poisoning problem of Hydrogen storage Material The impurities in the hydrogen gas sold in the market at present react on the surfaces of hydride particles of the hydrogen storage material, the speed of absorbing and releasing hydrogen and the hydrogen absorption amount are reduced, the phenomenon is called surface poisoning, the phenomenon can cause problems for utilizing the hydride which repeatedly carries out the absorption and release cycle reaction by using new hydrogen, different impurity types and contents are different for the poisoning degree of different hydrogen storage materials, and therefore, the practical application is that the allowable amount of the impurities in the hydrogen gas is one of important standards for selecting hydrogen storage material systems and types. (3) Regeneration treatment of hydrogen storage materials After the hydrogen storage material is poisoned, reactivation treatment, also called 'regeneration' treatment, is needed, the hydrogen storage material after the regeneration treatment can recover activities to different degrees, in practical application, the hydrogen storage material absorbs and releases hydrogen in a circulating way, namely pure hydrogen is used, alloy poisoning can not be completely avoided, but when the alloy is often poisoned, the hydrogen storage material is reprocessed by means of ultra-pure hydrogen cleaning, heating and vacuumizing, and the like, so that the hydrogen storage material is easy to regenerate, if the hydrogen storage material is prepared into a hydrogen storage device, the hydrogen storage device is regenerated in a high-temperature heating way, and the regeneration temperature of the titanium-based hydrogen storage alloy is even up to 400-500 ℃, so that the sealing and the safety reliability of the hydrogen storage device are easy to bring great challenges. In summary, how to solve the problems of activation, regeneration and cycle life of solid hydrogen storage materials and devices under relatively mild and simple conditions is a key to realize the high-value application of the solid hydrogen storage technology. Disclosure of Invention Aiming at the problems in the prior art, the technical problem to be solved by the invention is to provide the solid-state hydrogen storage device, so that the activation processing speed and the hydrogen absorption and desorption cycle life of the solid-state hydrogen storage device are improved. The invention relates to a solid-state hydrogen storage device which comprises a hydrogen storage device tank body 1, a valve 2 and a filter plate 3, wherein a hydrogen storage material is arranged in the hydrogen storage device tank body 1, the hydrogen storage material comprises a hydrogen storage material A4 and a hydrogen storage material B5, the hydrogen storage material A4 and the hydrogen storage material B5 are filled in layers but are in direct contact at the junction, the hydrogen storage material A4 is filled at the upper part of the hydrogen storage device tank body 1 near the valve end, and the hydrogen storage material B5 is filled at the lower part of the hydrogen storage device tank body 1. Preferably, the activation, the hydrogen absorption and desorption cycle and the regeneration treatment of the hydrogen storage device tank body 1 can be completed in a water bath environment at the room temperature to 100 ℃, so that the activation, the hydrogen absor