Fig. 6: OER kinetics investigations and DFT calculations. | Nature Communications

Fig. 6: OER kinetics investigations and DFT calculations.

From: Operando monitoring of the functional role of tetrahedral cobalt centers for the oxygen evolution reaction

Fig. 6

a pH dependence of OER activities of CoFe-NBs. The inset plot shows the proton reaction order determined from the equation of ρRHE = (∂log(i)/∂pH). b CV curves of CoFe-NBs for the OER in 1 M KOH in H2O, 1 M KOD in D2O, and 1 M TMAOH in H2O. c Operando Raman spectra of CoFe-NBs recorded in different OER conditions vs. black GC electrode. d Schematic illustration of the pre-equilibrium and the OER cycling processes via the LOM pathways of CoFe-NBs (Note: the pre-equilibrium process represents the transition of Cotet into Cooct). e Calculated free energy diagrams of OER intermediates adsorbed on Co-/CoFe-NBs via the LOM pathways.

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