Fig. 3: Intermediates detection on BiCuSeO during CO2RR.
From: Active and conductive layer stacked superlattices for highly selective CO2 electroreduction

a Schematic illustration of the in situ Raman measurement device during the CO2RR. b, c Potential- dependent and d, e time-dependent in situ Raman spectra of BiCuSeO catalysts in 0.5 M KHCO3 solution under CO2 bubbling. f Single oxidative LSV scans in N2-saturated 0.1 M NaOH solution for BiCuSeO, Cu2Se, Bi2O3 Ns, and CuSe-BiO.