Ammonia borane (AB) is considered a highly promising candidate among chemical hydrogen storage compounds. The improvement of efficient and low-cost catalysts is key to comprehending a highly efficient hydrogen generation reaction. In this study, the synthesis of non-noble nickel oxide was performed on nitrogen-doped graphene (NiO@N-rGO) and its efficiency towards the catalytic dehydrogenation of AB was investigated under mild conditions (25oC-50oC). The synergic effect between NiO and nitrogen-doped rGO has increased the performance of the catalyst. As a result, the turnover frequency (63 mol H2 min−1 (mol Ni) −1 of NiO@N-rGO is higher than most Ni-based catalysts. The activation energy (Ea) measured to be 48.7 kJ mol−1 is among the values of the most active catalysts.