Fig. 9. DSC developed at different heating rates of 5, 10, 20, 30 and 40 °C min⁻¹ for (a) MgH₂ and (b) MgH₂/5 wt% Zr₂Pd nanocomposite. The E_a decomposition calculated from the results shown in (a) and (b) using the Arrhenius approach are displayed in (c) and (d), respectively.