fig7

Figure 7. (A) Relationship between ΔG at the carbon active site and ORR overpotential (triple effect). Reproduced from Yang et al.^[127] by permission from RSC. (B) Illustration of atomic configurations of each site and free energy plots for each site at U = 0 V and U = 1.23 V. Reproduced from Wang et al.^[131] by permission from Wiley-VCH. (C) Schematic illustration of synthesis and free energy plot at U = -0.77 V and U = 0.13 V. Reproduced from Jiang et al.^[136] by permission from ACS.