In-situ self-assembly of molybdenum carbide and iron carbides heterostructure on N-doped carbon for efficient oxygen reduction reaction

This study presents a novel, Pt-free Mo 2 C/Fe 3 C on N-doped carbon catalyst synthesized via eco-friendly, low-cost, low-temperature self-assembly. It demonstrates superior ORR performance, presenting a significant breakthrough for Zn–air batteries.