Figure 3 (IMAGE)

Advanced Institute for Materials Research (AIMR), Tohoku University

Figure 3

Caption

(a) Scaling relations of the charge extrapolated Volmer, Heyrovsky, and Tafel transition state energies vs. H* binding energy. (b) Plot shows the adsorption energy of the intermediate HOO* plotted against the adsorption energy of the intermediate HO*. The scaling line (black line) has the equation ΔEOOH = ΔEOH + 3.2 eV. (c) EHO* vs. EO* scaling relations of M-N-C catalysts, metal, and metal oxides. (d) pH-dependent ORR volcanoes of M-N-C catalysts (left) and metal catalysts (right). (e) pH-dependent CO2RR volcanos on Sn-N-C catalysts (left) and polyatomic Sn catalysts (right). (f) 2D HER volcano considering RHE-scale surface Pourbaix (the orange triangles represent HER activity poisoned by HO*). (g) pH-dependent NO3RR volcano on pyrrolic M-N-C SACs (left) and pyridinic M-N-C SACs (right).

Credit

Hao Li et al.

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