Performance tests on metal hydride based hydrogen storage devices

► Developed the prototypes of metal hydride based hydrogen storage devices. ► Performance tests at different operating conditions were presented. ► Mg + 30% MmNi5 stores about 2.5 wt% of hydrogen at 150 °C and at 20 bar. ► Reported hydrogen storage capacity of MmNi4.08Co0.2Mn0.62Al0.1 is 1.2 wt%.