Fig. 7. A. Comparison of n app vs. applied potential for catalysts 1-Co (red), 2-Co (blue), and 3-Co (black) based on steady-state voltammograms in Fig. 6 (bottom). The vertical dashed line denotes the thermodynamic potential for water reduction at pH 7. B. Steady-state voltammogram of catalyst 1-Co at 100 rpm, 25 mV s–1.
