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

Wen-Zheng Cheng¹，Jia-Lin Liang¹，Heng-Bo Yin¹，Ya-Jin Wang¹，Wen-Fu Yan²，Jia-Nan Zhang¹

1. College of Materials Science and Engineering, Zhengzhou University2. State Key Laboratory of Inorganic Synthesis and Preparation,Jilin University

摘 要：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（Fe PPc@CB）.Through noncovalent π–π interactions,Fe PPc molecules can anchor on carbon matrix,thus facilitating the electron transfer process and stabilizing the systems.Owing to abundant free electrons and atomically MN₄ 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-solidstate batteries compared to that of commercial Pt/C,making it a promising ORR/OER electrocatalyst.

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