Fig. 11. Dehydrogenation kinetics of the hot-pressed nanocomposite MgH₂/5 MG-Zr₂Pd button measured at different temperatures (150, 175, 200, 175, and 225 °C) under 0.4 bar of H₂. Gas releasing kinetics measured at 225 °C for pure MgH₂ obtained after 50 h of RBM, and then consolidated at 350 °C is shown in the figure for comparison.