In situ green architecture of the 3D FeZn–N–C based electrocatalyst for efficient oxygen reduction

Abstract

We prepared a 3D FeZn–N–C based catalyst by green in situ growth of 1D Fe–N–C carbon nanotubes by introducing ferrocyanide ions on the surface of 2D exfoliated MOF-5. The 1D/2D FeZn–N–C based electrocatalyst is conducive to O₂ diffusion and ionic/electron transfer, exhibiting an excellent ORR catalytic performance and a peak power density of 294 mW cm⁻² for Zn–air batteries.