Microstructure and hydrogen storage capacity of magnesium hydride with zirconium and niobium fluoride additives after cyclic loading

▶ MgH2 + NbF5 and MgH2 + ZrF4 nanocomposites exhibit a good hydrogen sorption stability. ▶ Better stability of MgH2 modified by ZrF4 than by NbF5 additive was observed. ▶ MgF2 formation during cycling loading of MgH2 + NbF5 composite was observed. ▶ The catalitycal influence of ZrF4 and NbF5 on MgH2 decomposition process was observed.