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

Figure 4

Film surface morphology. SEM images of (a) NiCo2O4/CC-1 potential deposition at -1.1?V for 6 minutes at different magnifications and (b–e) EDS elemental mapping of C, Ni, Co, and O for NiCo₂O₄/CC-1.

(a)

(b)

(c)

(d)

(e)