Fig. 2: Electrochemical OER activity evaluations.
From: Lattice oxygen activation enabled by high-valence metal sites for enhanced water oxidation
a LSV polarization curves of various catalysts in O2-saturated 1-M KOH solution at a scan rate of 5 mV s−1. b Mass activities and TOFs of various catalysts at overpotential of 300 mV. c Tafel plots of various catalysts derived from polarization curves in Fig. 3a. d LSV polarization curves of EA-FCCN before and after 3000 CV cycles for stability test. Inset is 20-h chronoamperometric curves with the initial current density of 10 mA cm−2.
