Porous carbonaceous materials simultaneously dispersing N, Fe and Co as bifunctional catalysts for the ORR and OER: electrochemical performance in a prototype of a Zn–air battery

Infiltration of mesopores in SBA-15 hard template with phenanthroline complexes of Fe 3+ and Co 2+ allowed the dispersion of nitrogen, iron and cobalt species on the surface of the CMK-3 replica, as heterogeneous catalyst for the ORR and OER reactions.