Fig. 2: Electrocatalytic OER performances of the as-investigated catalysts in 1 M KOH (pH ~ 13.7) for the OER. | Nature Communications

Fig. 2: Electrocatalytic OER performances of the as-investigated catalysts in 1 M KOH (pH ~ 13.7) for the OER.

From: Operando monitoring of the functional role of tetrahedral cobalt centers for the oxygen evolution reaction

Fig. 2

a Normalized CV curves with a 90% iR drop correction (currents were normalized by ECSA, scan rate = 5 mV/s, mass loading = ~ 0.25 mg/cm2, and rotation speed = 1600 rpm). b Comparison of overpotentials at 0.02 mA/cmECSA2 (error bars represent the standard deviation). c Tafel plots. d Faradaic efficiency of CoFe-NBs tested in Ar-saturated 1.0 M KOH through RRDE techniques. e Chronopotentiometry measurements of CoFe-NBs at different current densities. f Long-time stability measurements of CoFe-NBs loaded on carbon paper (Note: the electrolyte was refreshed after every 100 h).

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