Magnesium-based hydrogen storage material based on magnesium dihydride and copper vanadate and method for producing same

Abstract

The present application relates to a magnesium-based hydrogen storage material based on magnesium dihydride and copper vanadate and a preparation method thereof, and belongs to the technical field of hydrogen storage material preparation. The present application mainly coats Cu3(VO4)2 powder on the surface of MgH2 powder through ball milling, and uses Cu3(VO4)2 bimetallic oxide to synergistically catalyze and modify the Mg / MgH2 system, significantly improves the hydrogen absorption and desorption rate of MgH2, obtains a composite hydrogen storage material with excellent low-temperature hydrogen storage performance, and simultaneously achieves the common optimization and improvement of hydrogen absorption kinetics and the total amount of hydrogen absorption and desorption. Compared with single metal oxides and other forms of added bimetallic elements, the present application is to solve the problems of high hydrogen absorption and desorption temperature and slow kinetics of MgH2, realize fast hydrogen absorption and desorption kinetics at medium temperature, that is, realize hydrogen absorption at low temperature (100 DEG C), and have fast hydrogen desorption kinetics at a relatively low hydrogen desorption temperature (for example, 225 DEG C, 250 DEG C).

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