Reasonable design of the porous metal-organic frameworks (MOFs) to convert a burgeoning carbon-based catalysts with high oxygen reduction reaction (ORR) activity are still challenging in energy conversion, storage and transport. Herein, Fe₇C₃-doped in-situ grown carbon nanotubes and N-doped hollow carbon (Fe_x-CNT@NHC) are prepared by using a simple and robust preparation method, which is used cubic ZIF-8-derived zinc oxide cubes as a template for secondary MOFs re-growth followed by the final carbonization. In the 0.1 M KOH, the as-pyrolyzed Fe_0.1-CNT@NHC electrocatalyst displays the value of half-wave potential is 0.92 V and the value of diffusion-limited current density is 6.08 mA cm⁻², respectively, which are close to the corresponding electrochemical values of the standard commercial Pt/C (0.89 V and 5.89 mA cm⁻²). Meanwhile, the material has passed relevant tests on its long-term stability and methanol tolerance in alkaline media, showing that it has excellent ORR activity and efficient stability under electrocatalysis. Furthermore, the Fe_0.1-CNT@NHC materials catalyze a Zn-air battery that delivers a performed peak power density of 105.9 mW cm⁻². The impressive catalytic activity of Fe_0.1-CNT@NHC stems from the effective synergy between efficient Fe and N co-doping, large specific surface area, and high electrical conductivity. This preparation route for carbon nanomaterials will provide a new synthetic strategy to synthesize high-performance non-noble metal carbon-based ORR catalysts for practical energy-related applications.

在能量转换，存储和运输方面，合理设计多孔金属-有机骨架（MOF）以转化具有高氧还原反应（ORR）活性的新兴碳基催化剂仍然具有挑战性。在此，采用简单而稳健的制备方法制备了Fe ₇ C ₃掺杂原位生长的碳纳米管和N掺杂空心碳（Fe _x -CNT @ NHC），该方法使用立方ZIF-8衍生的氧化锌立方作为二次MOF的模板，然后再进行最终碳化。在0.1 M KOH中，热解后的Fe _0.1 -CNT @ NHC电催化剂显示的半波电位值为0.92 V，扩散极限电流密度的值为6.08 mA cm ^-2分别接近标准商品Pt / C的相应电化学值（0.89 V和5.89 mA cm ^-2）。同时，该材料通过了其长期稳定性和在碱性介质中的甲醇耐受性的相关测试，表明其具有出色的ORR活性和在电催化下的有效稳定性。此外，Fe _0.1 -CNT @ NHC材料催化可实现105.9 mW cm ^-2的峰值功率密度的Zn-空气电池。Fe _0.1令人印象深刻的催化活性-CNT @ NHC源于有效的Fe和N共掺杂，大的比表面积和高的电导率之间的有效协同作用。碳纳米材料的这一制备途径将提供一种新的合成策略，以合成用于实际能源相关应用的高性能非贵金属碳基ORR催化剂。