Abstract
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.
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