Hydriding and dehydriding properties of nanostructured Mg₂Ni alloy prepared by the process of hydriding combustion synthesis and subsequent mechanical grinding

In this study, we synthesized a nanostructured Mg₂Ni alloy by means of hydriding combustion synthesis and subsequent mechanical grinding. Results on the structural change with mechanical grinding and the hydriding/dehydriding properties are presented. It was found that the nanostructured Mg₂Ni showed great improvement in hydriding rates at 313 and 373 K, and the reaction of dehydriding began at around 370 K, which is 190 K lower than that of the HCS product. Several factors were considered accounting for the enhancement in hydriding and dehydriding properties.