Fig. 5: Surface structure of IrMo model. | Nature Communications

Fig. 5: Surface structure of IrMo model.

From: OH spectator at IrMo intermetallic narrowing activity gap between alkaline and acidic hydrogen evolution reaction

Fig. 5

a, b LSV curves of IrMo/CNT and Ir/C in CO-saturated 1 M KOH (a) and 0.5 M H2SO4 (b) with a scan rate of 50 mV s−1. The anode current in these curves represents the CO oxidization current. The positions marked by arrows indicate the onset potential of CO oxidization. c The adsorption free energies of H2O and OH at different sites of IrMo (001). The adsorbed OH at Ir site is quite unstable and thus the adsorption free energy is unavailable. d The adsorption free energies of OH and H2O on Mo site of IrMo (001) with different coverages under different applied potentials.

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