Bifunctional iron‐phtalocyanine metal–organic framework catalyst for ORR, OER and rechargeable zinc–air battery

Exploring non‐noble metal and high‐activity electrocatalysts through a simple and controllable protocol remains a great challenge for oxygen reduction reaction (ORR) and zinc–air batteries. Herein, we developed a melt polymerization strategy to synthesize iron‐polyphthalocyanine (FePPc) metallic–organic frameworks (MOFs) over the carbon black matrix (FePPc@CB). Through non‐covalent – interactions, FePPc molecules can anchor on carbon matrix, thus facilitating the electron transfer process and stabilizing the systems. Owing to abundant free electrons and atomically MN 4 catalytic sites in the macrocycle structure, FePPc@CB exhibits excellent oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) electrocatalytic activity. The FePPc@CB also delivers excellent performances for liquid and flexible all‐solid‐state batteries compared to that of commercial Pt/C, making it a promising ORR/OER electrocatalyst.