Interfacial Coupling of NiPx/MoS2/CC Hybrid Catalysts for Effective Electrocatalytic Oxidation of Urea and Energy‐Saving Hydrogen Evolution

Abstract Urea oxidation reactions (UOR) coupled with hydrogen generation simultaneously is a promising strategy for developing sustainable energy conversion technologies, but the complexity of urea oxidation dynamics and the high coupling hydrogen evolution potential through a single catalyst limit its industrial application. Herein, a kind of novel bifunctional NiP x /MoS 2 /CC hybrid catalyst can be fabricated via a hydrothermal method followed by a facile in‐situ electrodeposition process. The prepared NiP x /MoS 2 /CC catalyst exhibits an overpotential of only 88 mV at 10 mA cm −2 for HER while the potential for UOR was only 1.36 V at 10 mA cm −2 . Further, the urea electrolytic cell assembled of the NiP x /MoS 2 /CC catalyst displays low potential (1.45 V@10 mA cm −2 ) and better long‐term durability. The improved electrocatalytic performances are mainly attributed to the intimately coupled interface between NiP x and MoS 2 , enormously improving the conductivity and increasing the heterogenous interface active area. Additionally, the closely incorporated heterogeneous interfaces trigger charge redistribution, which induces the fast electron transfer from the NiP x to MoS 2 . In a word, the present results can provide a feasible research strategy for design advanced multi‐functional catalysts via interfacial engineering for clean energy conversion applications.