Preparation method of mg-based hydrogen storage nanowires

Abstract

The invention provides a method for preparing Mg-based hydrogen storage nanowires, comprising the following steps: preparing metal Mg, metal Ce, metal La, metal Gd, metal Li and metal Ni, and performing batching and vacuum melting to obtain a Mg-based alloy ingot ; Atomize the Mg-based alloy ingot to obtain Mg-based alloy powder; heat-treat the Mg-based alloy powder; ball mill the heat-treated Mg-based alloy powder to obtain the ball-milled Mg-based alloy powder; dissolve PAN in DMF In the process, the PAN spinning solution is obtained, wherein the PAN concentration is 10-15wt%; the Mg-based alloy powder that has been heat-treated but not ball-milled is dissolved in the PAN spinning solution to obtain the first spinning solution; the ball-milled The Mg-based alloy powder is dissolved in the PAN spinning solution to obtain a second spinning solution; and the first spinning solution and the second spinning solution are formed into Mg-based hydrogen storage nanowires by coaxial electrospinning. The invention proposes a new method for preparing a hydrogen storage material. The alloy prepared by the method of the invention has a larger total amount of hydrogen storage and a faster rate of hydrogen absorption and desorption.

Description

technical field [0001] The invention belongs to the technical field of hydrogen energy utilization, and relates to a preparation method of Mg-based hydrogen storage nanowires. Background technique [0002] With the depletion of fossil energy and the increasingly serious pollution caused by combustion, finding clean and sustainable energy is a problem related to human survival and development. Hydrogen has become an important energy source in the 21st century. A consensus. Hydrogen is regarded as the best substitute for fossil fuels because in comparison, hydrogen energy is rich in resources (more than 70% of the earth's surface is covered by water); clean and environmentally friendly (using low-temperature fuel cells to convert hydrogen through electrochemical reactions There is no pollution in the process of generating electric energy and water); renewable (hydrogen generates electric energy or heat energy by chemical reaction and generates water, and water can be converte...

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Problems solved by technology

[0003] The usual way to store hydrogen is to compress it and store it in a high-pressure container or store it in a heat-insulated container after liquefaction. However, this means that it is very unsafe or requires good heat insulation materials and low-temperature devices, and it can only be used in special occasions.

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