fig11

Figure 11. (A) The TEM images of M-N-C/CNT: (A-1) Co-N-C/CNT-800, (A-2) Mn-N-C/CNT-800, (A-3) Ni-N-C/CNT-800 and (A-4) Fe-N-C/CNT-800; (B) CV curves of M-N-C/CNT-800 s and N-C/CNT-800 in N₂-saturated (grey) and O₂-saturated (colored) 0.1 M KOH electrolytes; (C) LSV plots of M-N-C/CNT-800 s, N-C/CNT-800 and 20 wt% Pt/C. Reproduced with permission. Copyright 2018, Elsevier^[155].