Abstract
The effect of milling time on the desorption temperature of hydrogen storage material MgH2-Fe3O4 has been carried out. This study aims to determine the effect of milling time variation and the effect of adding Fe3O4 catalyst on the characterization of MgH2. Milling time variation using mechanical alloying technique, with milling time given for 10 hours, 20 hours, 30 hours with a ball ratio of 10: 1 and a speed of 350 rpm. MgH2–10wt% Fe3O4 was characterized using XRD and DSC. The results showed the phases of MgH2, MgO, and Fe3O4. The crystal grain size of MgH2 decreased from 11.81 nm to 8.35 nm. Variation of ownership time and the addition of Fe3O4 catalyst can reduce the desorption time from 377oC to 369oC.
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