Electrodeposition of Hierarchical Nanosheet of NiCo₂O₄/CC as Highly Active and Stable Electrode for Water Oxidation

Figure 8

Stability measurements were recorded using a three-electrode configuration in 1 M NaOH. (a) The IR-corrected curve NiCo₂O₄/CC-3 measured after 7 days of chronoamperometry measurements. (b) Stability diagram obtained from LSV at overpotential of 593 mV, and the inset is the chronoamperometry measurement for the catalysis shown in Figure 6, where the measurements were conducted at overpotential of 593 mV for 9 hours. (c) Schematic diagram illustrating the four-step mechanism for OH, O, and OOH intermediates adsorbed on the surface of the catalysis during water oxidation (OER). (d) Illustration of the electron-hole mechanism at the surface of the catalysis and the process of water decomposition along with the fibers.

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