Electrochemical oxidation synthesis of energetic compound coupled with energy-efficient hydrogen evolution

•Coupled energy-saving H2 production and electro-synthesis of energetic compound.•Ru-doped NiSe2 catalyst on carbon fiber paper substrate for HER.•DFT attribute the performance to charge redistribution and synergistic interaction. Electrocatalytic water splitting process involves hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), where OER is a high energy-consumption step. Electro-oxidation of small molecules instead of OER and coupled with HER is a potential strategy for changing this situation. This work describes a coupling system for synthesizing energetic compounds (EMs) and hydrogen production using a ruthenium-doped nickel diselenide catalyst on carbon fiber paper (CFP@NiSe2@Ru). The coupling system was established to combine 3,4-diaminofurozan (DAF) oxidation with overall water splitting (OWS). It was achieved to an ultra-low cell voltage of 1.30 V at 10 mA cm–2 for 3,3′-diamino-4,4′-azofurazan (DAAF) green synthesis and hydrogen production simultaneously. This work established a new path towards the energy-efficient generation of H2 and the green electrosynthesis of DAAF. The coupling system of the energy-saving H2 production and green electrosynthesis of 3,3′-diamino-4,4′-azofurazan is constructed. The system displays an ultralow cell voltage of 1.30 V at 10 mA/cm2, which was 280 mV lower than conventional water electrolysis. This method can solve the problem of dangerous conventional energetic material synthesis and high energy consumption hydrogen production. [Display omitted]