Fig. 6: DFT calculations of NO3−RR and HER on Cu(111), Co(111), and CuCo(111).

Reaction-free energies for different intermediates of NO3-RR (a) and HER (b) at −0.2 V vs. RHE on CuCo(111), pure Cu(111), and pure Co(111) surface, respectively.
Reaction-free energies for different intermediates of NO3-RR (a) and HER (b) at −0.2 V vs. RHE on CuCo(111), pure Cu(111), and pure Co(111) surface, respectively.