An active site pre-anchoring and post-exposure strategy in Fe(CN)64-@PPy derived Fe/S/N-doped carbon electrocatalyst for high performance oxygen reduction reaction and zinc-air batteries

A novel “active site pre-anchoring and post-exposure” strategy is developed for the synthesis of highly active Fe/3S/N-C ORR electrocatalyst. In the synthesis of Fe/3S/N-C, the Fe(CN)64-@PPy precursors with highly dispersion of Fe active species were initially created by pre-anchoring Fe(CN)64- into polypyrrole (PPy) matrixes through electrostatic interactions depending on the cation radicals generated on the PPy chains during pyrrole monomer...