Fig. 5: Raman spectroscopy and NEXAFS studies at different stages of the OER process.

Ex-situ Raman spectra of (a) NiFe0.3MoOx, (b) NiFe0.3Ox, and c NiOx. NEXAFS spectra of O K-edge for (d) NiFe0.3MoOx, and e NiFe0.3Ox.
Ex-situ Raman spectra of (a) NiFe0.3MoOx, (b) NiFe0.3Ox, and c NiOx. NEXAFS spectra of O K-edge for (d) NiFe0.3MoOx, and e NiFe0.3Ox.