Boosting the oxygen evolution reaction via the reconstruction of an M(OH)x/Fe3O4 catalyst

The M(OH) x /Fe 3 O 4 /IF catalyst exhibited low overpotential of 214 mV for the OER at current density of 50 mA cm −2 . The in situ Raman spectra revealed that the reconstruction of M(OH) x /Fe 3 O 4 /IF boosted the OER activity.