Iron–Cobalt Phosphomolybdate with High Electrocatalytic Activity for Oxygen Evolution Reaction

Iron–cobalt phosphomolybdate (FeCoPM12) nanoparticles, which are highly efficient catalytic materials for the oxygen evolution reaction (OER), were fabricated through a coprecipitation route. Compared with iron–cobalt hydroxide and state‐of‐the‐art RuO2 electrocatalysts, the as‐prepared FeCoPM12 sample exhibited robust OER catalytic activity with a low overpotential of 258 mV at a current density of 10 mA cm−2 and a small Tafel slope of 33 mV dec−1. Moreover, the as‐synthesized sample presented preferable stability and after 10 h at 1.52 V the current density degraded by merely 8.3 %. This is ascribed to the high electrochemical stability and small porous structure of FeCoPM12, which provide effective electron transmission and improve the catalytic performance for OER in alkaline media. Coworking metals: FeCoPM12 nanoparticles, with high electrochemical stability and catalytic performance for the oxygen evolution reaction (OER), were fabricated through a coprecipitation route. Compared with iron–cobalt hydroxide and state‐of‐the‐art RuO2 electrocatalysts, the FeCoPM12 catalyst possesses a low overpotential of 258 mV at a current density of 10 mA cm−2 and a small Tafel slope of 33 mV dec−1 (see figure).