fig14
Figure 14. (A) Local charge density difference of the Co@CoO interface. (Yellow and cyan mean electron accumulation and electron depletion, respectively); (B) The calculated state density of Co, CoO, and Co@CoO; Schottky models of semiconductor CoO and metal Co interface (C) before and (D) after contact; (E) Along the reaction coordinate, the relative energy curves of Co, CoO, and Co@CoO and the corresponding Volmer-Heyrovsky process at the Co@CoO interface[136].
