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Tafel plots of oxygen evolution in 0.10 M KPi + 1 M KNO3 pH 2.5 of (A) NiPbOx (red triangles, 87 ± 5 mV/dec) and NiFePbOx (blue dots, 89 ± 6 mV/dec) (B) PbOx (gray squares, 206 ± 2 mV/dec), FePbOx (mustard triangles, 205 ± 3 mV/dec), and blank FTO (black dots, 201 ± 2 mV/dec).
