Reversible procedure for storing-releasing hydrogen in liquid form

The invention relates in particular to a procedure for storing hydrogen using organic liquids (LOHCs). The reversible process is carried out through electrocatalytic dehydrogenation of amines at room temperature and catalytic hydrogenation of nitriles at low temperatures and moderate pressures with a high hydrogen storage capacity (up to 6.9% by weight). In the present invention, heterogeneous catalysts are used to ensure the viability of storage, as well as reuse and recycling. The procedure uses hydrogen carriers that are abundant, widely used in industrial applications, non-toxic and with a high hydrogen storage capacity (6% by weight). The system developed is ideal for storing hydrogen for long periods of time at zero cost and for transporting hydrogen over medium to long distances.