A kind of mg-in-ag ternary hydrogen storage material and preparation method thereof
A mg-in-ag hydrogen storage material technology, applied in the magnesium-based hydrogen storage material system and its preparation field, can solve the problems of slow hydrogen absorption and desorption, impurities brought into the tank wall, long ball milling time, etc. Simple and easy to operate, simple and efficient operation, and the effect of reducing energy consumption
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Embodiment 1
[0021] Example 1 : The total weight of the smelted alloy is about 30 grams. According to the composition of Mg81In4Ag15, weigh the Mg block (purity 99%, add 9 wt% more burning loss to the Mg block), Ag sheet (purity 99.5%) and In block (purity is 99.5%). Put the weighed Mg block and Ag sheet into a copper crucible and induce melting under 15 KW power to obtain a low melting point Mg-Ag binary alloy, and then remelt the In block and the binary alloy to obtain a Mg81In4Ag15 ternary alloy. By ((Mg, In) 3 Ag + Mg(In)) eutectic structure and pro-eutectic Mg(In) composition, and the In composition in the smelted alloy is evenly distributed (such as figure 1 shown). Use a grinder to remove the oxide skin on the surface of the smelted alloy, and then grind it into a 100-mesh alloy powder in a glove box. The alloy powder is mechanochemically milled for 30 hours in a ball mill tank filled with 2 atm hydrogen to obtain a small amount of decomposition product MgH 2 and other amorpho...
Embodiment 2
[0022] Example 2 : The total weight of the smelted alloy is about 30 grams. According to the composition of Mg75In5Ag20, weigh the Mg block (purity 99%, add 9 wt% burning loss to the Mg block), Ag sheet (purity 99.5%) and In block (purity is 99.5%). Put the weighed Mg block and Ag sheet into a copper crucible and induction melt at a power of 15 KW to obtain a low-melting point Mg-Ag binary alloy, and then re-melt the In block and the binary alloy to obtain a Mg75In5Ag20 ternary alloy. By ((Mg, In) 3 Ag + Mg(In)) eutectic structure and proeutectic (Mg, In) 3 The composition of Ag and the composition of In in the alloy are evenly distributed. Use a grinder to remove the oxide skin on the surface of the smelted alloy, and then grind it into a 100-mesh alloy powder in a glove box. The alloy powder is mechanochemically milled for 30 hours in a ball mill tank filled with 2 atm hydrogen to obtain a small amount of decomposition product MgH2 And other amorphous alloy phases; the b...
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