Fig. 3: Examples of the surface Pourbaix diagrams of DACs at pH = 0.
From: Surface states of dual-atom catalysts should be considered for analysis of electrocatalytic activity
a Adsorption configurations of Fe-Ni-C and b Fe-Ni-N1,2,4-C, where yellow, green, blue, silvery, red, and light pink spheres represent Ni, Fe, N, C, O, and H, respectively. c Surface Pourbaix diagrams of Fe-Ni-C and d Fe-Ni-N1,2,4-C at pH = 0.
