fig16

Figure 16. (A) SEM and TEM images of 2D-PPCN; (B) Schematic illustration of the zinc-air battery configuration; (C) Galvanodynamic charge/discharge polarization curves of 2D-PPCN and Pt/C+Ir/C based air electrode; (D) ORR activity at 1,600 rpm; (E) ORR polarization curves of 2D-PPCN-2/6 at various rotating speeds; (F) OER activity at 1,600 rpm; (G) Potential differences between the E_j = 2 of ORR and E_j = 10 of OER for all the catalysts. Reproduced with permission. Copyright 2018, ACS Publications^[236].