Formamide-soluble solid-state ZnO as Zn source for synthesizing FeCo–NC with ultrahigh oxygen reduction reaction activity

Cost/time-efficient synthesis of highly dispersed M–N–C electrocatalysts was established using solid-state ZnO as new Zn source, rendering superior ORR ( E onset ∼ 1.05 V and E 1/2 ∼ 0.92 V) and Al–air battery performance.