Effect of La-Ni-Based Alloys on Hydrogenation/Dehydrogenation Properties of MgH2

The effect of La-Ni-based alloys La23Nd8.5Ti1.1Ni33.9Co32.9Al0.65, NiMn9.3Al4.0Co14.1Fe3.6, and NiMnAl on MgH2 and their Hydrogenation properties were investigated. All these additives considerably enhanced MgH2’s dehydrogenation capabilities, but NiMnAl exhibits the best alloy effect followed by La23Nd8.5Ti1.1Ni33.9Co32.9Al0.65 and NiMn9.3Al4.0Co14.1Fe3.6 sequentially. Kissinger’s equation was used to compute the activation energy of dehydrogenation the activation energy is decreased to various degrees by the use of Ni-based additives. The best outcome was for the MgH2-25 wt% NiMnAl. Due to the catalytic impacts on hydrogenation/dehydrogenation rates, thermo gravimetric analysis (TGA) and differential scanning calorimetry (DSC) studies revealed the creation of many active species.