fig7

From: Unveiling proton-regulated Mo=O/Mo-O^- centers in reconstructed Ni₂Mo-NiOOH/MoO_x interfaces toward accelerated proton-coupled electron transfer for urea oxidation reaction

Unveiling proton-regulated Mo=O/Mo-O<sup>-</sup> centers in reconstructed Ni<sub>2</sub>Mo-NiOOH/MoO<sub>x</sub> interfaces toward accelerated proton-coupled electron transfer for urea oxidation reaction

Figure 7. Operando EIS characterization of various catalytic electrodes (potential range: 0.15-0.65 V vs. SCE). (A-C) 3D waterfall plots of Nyquist impedance spectra; (D-F) 3D waterfall plots of Bode phase diagrams; (A and D) Ni₂Mo-NiOOH/MoO_x; (B and E) Ni₂Mo/NF; (C and F) Ni-NiOOH. EIS: Electrochemical impedance spectroscopy; SCE: saturated calomel electrode; NF: nickel foam.