Ionically dispersed Fe(ii)–N and Zn(ii)–N in porous carbon for acidic oxygen reduction reactions

Inspired by the zinc protoporphyrin found in red blood cells during heme production, we have developed a novel type of bimetallic Fe, Zn/N/C catalyst with high metal loading (Fe 1.2 wt% and Zn 1.7 wt%), demonstrating high activity and high stability for oxygen reduction processes in acidic electrolytes.