Fig. 7. (a) Calculated coverages for the (011̄0) γ-Ni3FeO8K 2H2O surface, with considered coverages depicted as three distinct insets which are predicted most stable from 1–2 VRHE. The differing slopes are a result of differing levels of hydrogenation across the three surface coverages. The magnetic moments (in μB) for surface Ni and Fe metals are given in the insets. (b) Predicted potentials of Fe(OH) dissolution from differing coverages, since this is the species which leaches first as per ESI Fig. S8 and S9.† The inset shows the two relative positions A and B considered for Fe.
