Figure 11.

a) Lateral high‐angle annular dark‐field scanning transmission electron microscopy (HAADF‐STEM) image of partially oxidized Co 4‐atom‐thick layers and (b) the corresponding intensity profile along the pink rectangle in (a). c,d) Corresponding crystal structures. e) Electrochemical active surface area (ECSA) corrected Tafel plots for HCOO⁻ production. f) CO₂ adsorption isotherms of partially oxidized Co 4‐atom‐thick layers (red), Co 4‐atom‐thick layers (blue), partially oxidized bulk Co (violet) and bulk Co (black). Reproduced with permission.131 Copyright 2016, Macmillan Publishers Limited.