Structure modification of Mg-Nb films under hydrogen sorption cycles

▶ Influence of Nb additions on the hydrogen kinetics of Mg layers. ▶ Structure modification of the Mg matrix during hydrogen cycling. ▶ Lattice strains induced by Nb tends to decrease during hydrogen cycling. ▶ Nb nanoparticles form during hydrogen cycling. ▶ Nb enhances the porous structure of the Mg layer formed during hydrogen cycling.