Preparation method for Mg-based hydrogen storage nanowire

Abstract

The invention provides a preparation method for a Mg-based hydrogen storage nanowire. The preparation method comprises the following steps that metal Mg, metal Ce, metal La, metal Gd, metal Li and metal Ni are prepared, batching and vacuum melting are carried out, and a Mg-based alloy ingot is obtained; the Mg-based alloy ingot is atomized, and Mg-based alloy powder is obtained; heat treatment iscarried out on the Mg-based alloy powder; ball milling is carried out on the heat-treated Mg-based alloy powder, and the ball-milled Mg-based alloy powder is obtained; PAN is dissolved in DMF, and a PAN spinning solution is obtained, wherein the PAN concentration ranges from 10 wt% to 15 wt%; the Mg-based alloy powder subjected to heat treatment but not ball milling treatment is dissolved in the PAN spinning solution, and a first spinning solution is obtained; the Mg-based alloy powder subjected to ball milling treatment is dissolved in the PAN spinning solution, and a second spinning solutionis obtained; and the first spinning solution and the second spinning solution are formed into the Mg-based hydrogen storage nanowire by a coaxial electrostatic spinning method. By the adoption of thepreparation method for the new hydrogen storage material. The alloy prepared by the preparation method has larger hydrogen storage amount and higher hydrogen absorption and release speed.

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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