Lithium–beryllium hydrides: the lightest reversible metal hydrides

Lithium–beryllium hydrides are a new group of metal hydrides for hydrogen storage. They show the highest reversible hydrogen capacity (more than 8 wt.%) of all known metal hydrides. Measurements of equilibrium pressures of the Li–Be hydrides indicate that these materials can be used at temperatures down to 150°C. Fully reversible and safe, these materials offer a new prospect for hydrogen storage, especially for small-scale applications where capacity is critical.