Hydrogen storage materials based on metal diboride and hydride nanostructures (nanopowders, nanowires, nanotubes and thin films) with H2 content > 5.5 wt% at low pressures (1-10 atm.) and temperatures (100÷150°C), suitable for the development of a storage system (HSS) with practical hydrogen charging/discharging parameters (< 400 K) for various applications, mainly automotive ones.