Coupling Anodic Activity and Stability at Ni-Based Non-Oxide Catalysts via Coordinating Alcohol Oxidation and Oxygen Evolution

A Ni 2 P layer on Ni nanorod arrays is used to elucidate the dynamic coupling between alcohol oxidation (AOR) and oxygen evolution (OER). A cooperative region (1.50–1.56 V vs. RHE, [OH − ] < 2.0 M) boosts both TOF AOR and TOF OER , whereas a competitive region at higher potential/alkalinity suppresses AOR and compromises overall anodic performance. In situ Raman identifies NiOOH as the common active phase and reveals a complementary mechanism: OER enables NiOOH activation, while AOR drives NiOOH ordering and stabilizes the reconstructed interface, thereby mitigating Ni 2 P corrosion and sustaining higher currents. These insights provide practical guidance to engineer robust, low-energy, value-added anodes via controlled AOR-OER coupling.