Fig. 2: Electrochemical OER performance of catalysts. | Nature Communications

Fig. 2: Electrochemical OER performance of catalysts.

From: Defect-interface coupling for stable lattice-oxygen-driven oxygen evolution at industrial current densities

Fig. 2: Electrochemical OER performance of catalysts.

a Polarization curves with 90% iR compensation in 1 M KOH at a scan rate of 5 mV s−1. R was 1.1 ± 0.1 Ω. b Corresponding overpotentials at 1, 2, and 3 A cm−2 of NiFe LDH/FeMoO, NiFe LDH, and IrO2. c Δη/Δlog|j| values for different current density ranges. d The resistance of the interfacial charge transfer (Rct) at various potential for NiFe LDH and NiFe LDH/FeMoO. e The turnover frequency (TOF) values of catalysts at an overpotential of 300 mV (the black dotted line). f Polarization curve of NiFe LDH/FeMoO in alkaline electrolytes with different pH. g Polarization curves with 90% iR compensation of NiFe LDH/FeMoO in 1 M KOH and 1 M TMAOH, respectively. R was 1.1 ± 0.1 Ω. The inset shows corresponding Tafel plot. h The 34O2/32O2 ratio over four cyclic voltammetry (CV) cycles. i The stability test of NiFe LDH/FeMoO and NiFe LDH at 2 A cm−2 in 1 M KOH.

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