fig7
From: Dealloying-derived Fe-doped Ni(OH)2/Ni foils as self-supported oxygen evolution reaction catalysts
Figure 7. (A) CV curves of O-Ni-Fe/200-3 before and after i-t test; inset is the i-t curve obtained at 1.55 V vs. RHE. (B) XRD of O-Ni-Fe/200-3 after the long-term test; inset is the SEM image. (C) HETEM and (D) SAED of the tested O-Ni-Fe/200-3. (E) Ni 2p and (F) O 1s XPS spectra of tested O-Ni-Fe/200-3. RHE: Reversible hydrogen electrode; XRD: X-ray diffraction; SEM: scanning electron microscope; SAED: selected area electron diffraction; XPS: X-ray photoelectron spectroscopy.
