Tungsten doped FeCoP nanoparticles embedded into carbon for highly efficient oxygen evolution reaction.

Designing active and stable electrocatalysts with economic efficiency for oxygen evolution reaction (OER) is essential for developing water splitting process at an industrial scale. Herein, we rationally designed a tungsten doped iron cobalt phosphide incorporated with carbon (W-FeCoP/C), prepared by a mechanochemical approach. X-ray photoelectron spectroscopy (XPS) revealed that the doping of W led to an increasing of Co/Co and Fe/Fe molar ratios, which contributed to the enhanced OER performance.