fig9
Figure 9. (A) Schematic of working mechanism for Co-SAs/N-C electrodes. (B) Calculated free-energy diagrams for discharge-charge reactions on the active surface of Co-SAs/N-C. Reproduced with permission: Copyright 2020, Springer Nature[130]. (C) Structure of Fe/N/C Composite. Reproduced with permission: Copyright 2012, American Chemical Society[131]. (D) Discharge mechanism of N-HP Co SACs in Li-O2 batteries. Reproduced with permission: Copyright 2020, Springer Nature[132]. (E) TEM and HAADF-STEM images of Ru0.3 SAs-NC with (F) its charge density distribution and (G) total and partial DOS. Reproduced with permission: Copyright 2020, American Chemical Society[133]. (H) DOS of Pt-CNHS. Reproduced with permission: Copyright 2020, Elsevier[134].
