Metallic iron doped vitamin B12/C as efficient nonprecious metal catalysts for oxygen reduction reaction

A bimetallic nitrogen-doped carbon catalyst (FeCoNC) was synthesized by pyrolyzing Fe-doped Vitamin B12 (VB12) supported carbon black, which contains abundant M-Nx (M = Fe and Co) sites and carbon-encapsulated metallic Fe nanoparticles and shows excellent catalytic activity towards oxygen reduction reaction in an alkaline media.144