Hydrogen storage in Mg-based nanocrystalline metal hydrides

Abstract

In this paper, attention in focused on the nanostructured magnesium films for hydrogen storage.It is shown that 2um thick Mg film is transformed into MgH2 film under highflux and fluence hydrogen plasma immersion ion implantation at 450K for 15min. All hydrogen desorbs around 530K temperature, which corresponds to the decomposition of MgH2 Mg+H2. The Mg-based hydrides compounds are too stable for practical applications and can be destabilized by adding small amount of transition metals (Ti, V, Ni).The results provide new aspects of hydriding of thin nanocrystalline film materials under highly nonequalibrium conditions on the surface and destabilization oh hydrides using additives