Superior hydrogen storage properties of Mg95Ni5 + 10 wt.% nanosized Zr0.7Ti0.3Mn2 + 3 wt.% MWCNT prepared by hydriding combustion synthesis followed by mechanical milling (HCS + MM)

摘要: Abstract Significant improvement of the hydrogen storage property magnesium-based materials was achieved by process hydriding combustion synthesis (HCS) followed mechanical milling (MM) and addition nanosized Zr0.7Ti0.3Mn2 MWCNT. Mg95Ni5 doped 10 wt.% 3 wt.% MWCNT prepared HCS + MM absorbed 6.07 wt.% within 100 s at 373 K in first cycle desorbed 95.1% 1800 s 523 K. The high rate remained well capacity reached 5.58 wt.% 423 K 10th cycle. dehydrogenation activation energy this system 83.7 kJ/mol, which much lower than that as-received MgH2. A possible hydrogenation–dehydrogenation mechanism proposed terms structural features derived from synergistic catalytic effects