FABRICATION METHOD OF MAGNESIUM BASED HYDROGEN STORAGE METARIAL

摘要

A method for preparing magnesium-based hydrogen storage materials is provided to improve the hydrogen storage rate of magnesium hydroxide while minimizing the reduction of hydrogen storage capacity of the magnesium hydroxide, by using high-energy ball milling. A mixture of magnesium hydroxide and transition metal halide is formed(S10). The mixture and balls are inputted into a case(S20). Inert gas or hydrogen gas fills the case(S30). A high-energy ball milling process is performed on the mixture for 5-30 minutes(S40). In the step of forming the mixture, 0.1-5 mol% of transition metal halide powder is added based on the mixture. The balls have diameters of 5-30 mm. A weight ratio of the mixture to the balls is 1:1-1:100.