Abstract 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 $$\uppi$$ π – $$\uppi$$ π 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. Graphic abstract

中文翻译：

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用于ORR、OER和可充电锌-空气电池的双功能铁-酞菁金属-有机骨架催化剂

摘要 通过简单可控的方案探索非贵金属和高活性电催化剂仍然是氧还原反应（ORR）和锌空气电池的一大挑战。在此，我们开发了一种熔融聚合策略，以在炭黑基质（FePPc@CB）上合成铁-聚酞菁（FePPc）金属-有机骨架（MOF）。通过非共价 $$\uppi$$ π – $$\uppi$$ π 相互作用，FePPc 分子可以锚定在碳基质上，从而促进电子转移过程并稳定系统。由于大环结构中大量的自由电子和原子级的 MN 4 催化位点，FePPc@CB 表现出优异的氧还原反应（ORR）和析氧反应（OER）电催化活性。与商用 Pt/C 相比，FePPc@CB 还为液态和柔性全固态电池提供了优异的性能，使其成为一种很有前途的 ORR/OER 电催化剂。图形摘要