Transition‐metal phosphides (TMPs)‐based electrode materials with high capacity have attracted considerable interest as a promising anode material for lithium−ion batteries (LIBs). Herein, a hierarchical cable‐like structure composed of CoP@C core−shell nanoparticles (NPs) encapsulated in one‐dimensional (1D) porous carbon framework intertwined with N‐doped carbon nanotubes (CoP@C⊂PCF/NCNTs) is synthesized by a self‐templating, self‐catalytic, and subsequent vapor‐phase phosphorization strategy. The unique nanoarchitecture regime provides multiple advantages. The 1D carbon framework allows for quick ion and electron access, maintaining the integrity and accommodating the volume change of the structure during repeated discharging/charging. The internal carbon shell can prevent the direct aggregation of CoP NPs on cycling. The external NCNTs on the surface supply a staggered conductive network to promote electrolyte penetration and charge transportation. Impressively, the as‐fabricated hybrid nanocables deliver a reversible capacity of 712 mAh g⁻¹ at 0.5 A g⁻¹ for over 700 cycles with excellent rate capability as an anode material for LIBs. The significantly improved lithium storage properties of CoP@C⊂PCF/NCNTs reveal the importance of reasonable design and engineering of novel hierarchical structures with higher complexity.

中文翻译：

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由CoP @C⊂Carbon框架与碳纳米管交织在一起的分层微电缆，可有效存储锂

具有高容量的基于过渡金属磷化物（TMP）的电极材料作为锂离子电池（LIB）的有希望的阳极材料已引起了广泛的关注。本文中，通过以下步骤合成了由CoP @ C核壳纳米颗粒（NPs）包裹在与N掺杂碳纳米管（CoP @C⊂PCF/ NCNT）交织的一维（1D）多孔碳骨架中的分层电缆状结构。一种自模板，自催化以及随后的气相磷化策略。独特的纳米体系结构提供了多种优势。一维碳骨架可快速访问离子和电子，在重复放电/充电过程中保持完整性并适应结构的体积变化。内部碳壳可以防止CoP NP在循环中直接聚集。表面上的外部NCNT提供交错的导电网络，以促进电解质渗透和电荷传输。令人印象深刻的是，预制的混合纳米电缆可提供712 mAh g的可逆容量在0.5 A g ^-1下处于^-1的状态超过700个循环，具有出色的倍率能力，可作为LIB的负极材料。CoP @C⊂PCF/ NCNTs的锂存储性能显着改善，揭示了合理设计和工程设计具有更高复杂性的新型分层结构的重要性。