Ni0.58Pt0.42/graphene was synthesized via a galvanic replacement approach. The complete hydrogen release from N2H4 or N2H4BH3 was achieved at 30 °C. A highest TOF value of 2303 h−1 for N2H4BH3 at 50 °C was obtained. A low activation energy of 23.9 kJ/mol was obtained for decomposition of N2H4.