Journal of Industrial and Engineering Chemistry, Vol.21, 378-386, January, 2015
Evaluation of the metal-added Mg hydrogen storage material and comparison with the oxide-added Mg
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A Mg-5 wt% Ni-2.5 wt% Fe-2.5 wt% Ti (named Mg-5Ni-2.5Fe-2.5Ti) hydrogen storage material was prepared by reactive mechanical grinding, and hydrogen absorption and desorption properties were then investigated by a Sievert’s type volumetric apparatus. The activated Mg-5Ni-2.5Fe-2.5Ti sample absorbed 5.67 wt% H for 60 min at 573K under 12 bar H2 and desorbed 4.72 wt% H for 60 min at 573K under 1.0 bar H2. Mg-5Ni-2.5Fe-2.5Ti had a higher initial hydriding rate at 593K under 12 bar H2 and a higher dehydriding rate at 593K under 1.0 bar H2 than oxide-added Mg samples with Mg-xFe2O3-yNi compositions.
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