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![Self-terminated electrodeposition of Pt group metal: principles, synthetic strategies, and applications](https://image.oaes.cc/7eb96f31-c86c-4375-a25a-29a656950b6c/em4065.fig.9.jpg)
Figure 9. (A) Time-dependent current behavior during Ir deposition on Au/CP using repetitive potential pulses in a N2-purged solution of 3 mM K3IrCl6 and 500 mM Na2SO4 (pH = 4.0) at 70 °C. (B) Au 4f and Ir 4f spectra from Au/CP, Ir/Au/CP, and commercial Ir foil samples. (C) Ir 4f7/2 peak binding energy and [Ir3+ + Ir4+ + Ir > 4+] area ratio of #Ir/Au/CP depending on Ir coverage. (D) LSV curves for OER activity of each electrode. (E) Tafel plots corresponding to (D). (F) CV curves of Ir-based electrodes recorded at 10 mV s-1 in