APG-assisted synthesis of bimetallic molybdates for efficient and durable alkaline oxygen evolution reaction

The development of efficient and durable oxygen evolution reaction (OER) catalysts is critical for sustainable hydrogen production via water electrolysis. Herein, NiMoO 4 /Fe 2 (MoO 4 ) 3 heterostructured catalyst supported on nickel foam (NF) is synthesized through decyl glucoside (APG)-assisted hydrothermal reaction and annealing. In 1.0 mol L −1 KOH, the optimized catalyst delivers a low overpotential of 215 mV at 10 mA cm −2 with a small Tafel slope of 42.44 mV dec −1 . It exhibits outstanding long-term stability, maintaining 100 mA cm −2 for 1600 h and 500 mA cm −2 for 400 h under industrial conditions. APG acts as a green template to enhance interfacial adhesion, improve hydrophilicity, and modulate the electronic structure via hydrogen bonding, thus boosting OER performance. This work offers a feasible strategy for designing high-performance industrial OER electrocatalysts.