fig10
Figure 10. (A) ORR curves in 0.1 M KOH alkaline electrolyte; (B) half-wave potential E1/2 and dynamic current density jk of different samples; (C) ORR curves of Meso-Fe-N-C before and after 5,000 cycles; (D) The polarization curve and power density diagram of Meso-Fe-N-C based H2-O2 fuel cell. This figure is quoted with permission from Zhou et al.[110]. meso-Fe-N-C: Atomic Fe and N co-doped ordered mesoporous carbon nanosphere; ORR: oxygen reduction reaction.
