Dual‐Atom Support Boosts Nickel‐Catalyzed Urea Electrooxidation

Abstract Nickel‐based catalysts have been regarded as one of the most promising electrocatalysts for urea oxidation reaction (UOR), however, their activity is largely limited by the inevitable self‐oxidation reaction of Ni species (NSOR) during the UOR. Here, we proposed an interface chemistry modulation strategy to trigger the occurrence of UOR before the NSOR via constructing a 2D/2D heterostructure that consists of ultrathin NiO anchored Ru−Co dual‐atom support (Ru‐Co DAS/NiO). Operando spectroscopic characterizations confirm this unique triggering mechanism on the surface of Ru‐Co DAS/NiO. Consequently, the fabricated catalyst exhibits outstanding UOR activity with a low potential of 1.288 V at 10 mA cm −2…