Single-atom oxygen reduction reaction electrocatalysts of Fe, Si, and N co-doped carbon with 3D interconnected mesoporosity

ORR activity of Fe, Si, and N co-doped carbons (FeSiNCs) is first reported that DFT calculations reveal the origin of the ORR activity of FeSiNC, presenting excellent ORR activity and single-cell performances in Zn–air battery and AEMFC.