Fe–Nx sites coupled with Fe3C on porous carbon from plastic wastes for oxygen reduction reaction

Abstract

Isolated Fe–N_x sites coupled with Fe₃C nanoparticles co-embedded in N-doped porous carbon were fabricated using polyethylene terephthalate wastes as carbon sources. Benefiting from the synergistic effect between Fe–N_x sites and Fe₃C, and the hierarchical porous structure, the catalyst exhibits outstanding ORR performance, realizing the concept of turning trash into treasure.