Hydrogen storage alloy particle and preparation method thereof

Abstract

The invention relates to a hydrogen storage alloy particle and a preparation method thereof and belongs to the technical field of hydrogen storage. The hydrogen storage alloy particle is characterized in that the surface of the hydrogen storage alloy particle is covered with a hardening resistant agent; and the hardening resistant agent is methylsilicone oil. The preparation method of the hydrogen storage alloy particle is characterized in that a hydrogen storage alloy block body material and the hardening resistant agent are stored in an airtight reactor, and after hydrogen is pumped in the reactor, hydrogenation crushing occurs in the hydrogen storage alloy block body material, so that the surface of the obtained hydrogen storage alloy particle is covered with the hardening resistant agent. The hydrogen storage alloy particle and the preparation method thereof have the advantages that particle flowability is good, particle hardening is avoided in the hydrogen absorption and desorption processes, the hydrogen storage alloy particle is stable in the air environment, the preparation technique is simple, manufacturing cost is low, and product performance is stable and can be widely applied to metal hydride hydrogen storage containers for storing the hydrogen.

Description

technical field [0001] The invention belongs to the technical field of hydrogen storage, and in particular relates to a hydrogen storage alloy particle and a preparation method thereof. Background technique [0002] Hydrogen has many uses, both as a clean energy carrier for clean power generation such as through fuel cells, and as a widely used industrial gas. It has also recently been found that hydrogen can be used in the treatment of diseases. The promotion of the use of hydrogen requires safe storage and transportation technology. At present, hydrogen storage methods mainly include high-pressure container hydrogen storage and low-temperature liquefied hydrogen storage. Solid-state hydrogen storage is a new type of hydrogen storage technology. In the hydrogen device, the metal hydride filled with hydrogen can release hydrogen continuously under certain conditions, and the hydrogen storage tank can be recycled after recharging hydrogen, so that the purpose of storing and ...

AI Technical Summary

Problems solved by technology

[0008] However, there are many problems in the process of manufacturing and using the solid-state hydrogen storage device. For example, after the hydrogen storage alloy in the solid-state hydrogen storage device is activated, the particles of the hydrogen storage alloy have become very fine, reaching the micron level, and are in the form of powder. On the one hand, Its thermal conductivity is very poor, which affects the hydrogen absorption and desorption efficiency of hydrogen storage gas. On the other hand, it is easy to form hardening during the hydrogen absorption and desorption process. Once hardening is formed, it will bring great hidden dangers to the safety of solid-state hydrogen storage devices, such as solid-state hydrogen storage. Burst or even burst