A facile yet efficient approach is introduced to rationally integrate Fe₃C nanoparticles with Fe‐N‐doped mesoporous carbon nanofibers (denoted as Fe₃C@FeN@CNF) by the direct‐electrospinning technique and a subsequent calcination process. Benefiting from the unique one‐dimensional structure with high porosity and the synergies among the active sites of Fe‐Nx, N‐C and graphitic carbon encapsulated Fe₃C/Fe nanoparticles, the hierarchically structured Fe₃C@FeN@CNF show enhanced electrocatalytic activity and durability for oxygen reduction and evolutionreactions, comparable to that of commercialized Pt/C and RuO₂ electrocatalysts. Significantly, the as‐fabricated Fe₃C@FeN@CNF composite shows higher electrochemical performance than Pt/C in the Zn‐air battery.

中文翻译：

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一维MOF衍生的N掺杂多孔碳纳米纤维，包裹有Fe3C纳米粒子，可实现高效的双功能电催化

引入了一种简便而有效的方法，通过直接电纺丝技术和随后的煅烧过程，将Fe ₃ C纳米颗粒与Fe-N掺杂的中孔碳纳米纤维（称为Fe ₃ C @ FeN @ CNF）合理地整合在一起。得益于高孔隙率的独特一维结构以及Fe‐Nx，N‐C和石墨碳包裹的Fe ₃ C / Fe纳米颗粒的活性位点之间的协同作用，分层结构的Fe ₃ C @ FeN @ CNF显示出增强的电催化性能与商业化的Pt / C和RuO ₂电催化剂相比，其氧还原和放出反应的活性和持久性均相当。值得注意的是，制成的Fe ₃在锌空气电池中，C @ FeN @ CNF复合材料显示出比Pt / C高的电化学性能。