The project aims to develop new catalysts for the catalytic and electrocatalytic decomposition of ammonia, in order to generate hydrogen to be used for energy production. The parent ammonia could be obtained without CO₂ emissions if the hydrogen needed for its synthesis comes from non-fossil sources such as biomass or electrolysis. Ammonia is considered an energy vector due to its great potential for chemical storage of hydrogen and its easy liquefaction, transportation and distribution. The hydrogen release in a catalytic reactor would allow its use in situ, either in fuel cells or by direct combustion. Taking into account that commented above, catalysts will be prepared using highly novel supports (graphene and derivatives). The most promising catalysts will be selected. In addition, an energy, exergetic, economic and life cycle study will be carried out integrating all stages of the process, including the use of the generated hydrogen in a combustion process.