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The construction of an efficient oxygen reduction reaction and oxygen evolution reaction (ORR/OER) bifunctional electrocatalyst is of great significance but still remains a giant challenge for high-performance metal–air batteries. In this study, uniform FeS/Fe₃C nanoparticles embedded in a porous N,S-dual doped carbon honeycomb-like composite (abbr. FeS/Fe₃C@NS-C-900) have been conveniently fabricated by pyrolysis of a single-crystal Fe-MOF, which has a low potential gap ΔE of ca. 0.72 V, a competitive power density of 90.9 mW/cm², a specific capacity as high as 750 mAh/g_Zn, and excellent cycling stabilities over 865 h (1730 cycles) at 2 mA/cm² when applied as a cathode material for rechargeable zinc–air batteries. In addition, the two series-linked Zn–air batteries successfully powered a 2.4 V LED light as a real power source. The efficient ORR/OER bifunctional electrocatalytic activity and long-term …