Hydriding-dehydriding cycling behavior of magnesium-nickel-iron oxide alloy

► Investigation on the cycling characteristics of an Mg-15 wt%Ni-5 wt%Fe2O3 alloy. ► Linear decrease in absorbed hydrogen quantity with number of cycles. ► Phase analysis by Rietveld analysis from the XRD patterns of 150 cycled alloy. ► Analyses by Williamson-Hall technique of 150 cycled sample. ► Crystallite size of Mg 130.3 nm and strain of Mg 0.33%.