Metal-organic framework (MOF)-derived functional carbon matrices have recently attracted considerable attention as energy-storage materials. However, the development of MOF-derived carbon materials with hierarchical structures, capable of thoroughly preventing the “shuttling᾿of polysulfides, is still a major challenge. Herein, we synthesized cobalt nanoparticle-containing porous carbon polyhedra with in situ grown N-doped carbon nanotube (CNT) backbone (NCCNT-Co), using zeolitic imidazolate framework-67 (ZIF-67) as starting material. The obtained NCCNT-Co, with interconnected N-doped CNTs on both inner and outer surfaces, possesses an integrated conductive network, which can further accelerate the transport of electrons/ions inside the whole sulfur cathode. The mesoporous structure derived from the ZIF-67 matrix and the densely immobilized CNTs, coupled with the homogeneously doped N atoms and Co nanoparticles, can efficiently trap lithium polysulfides (LiPSs) by physical confinement and chemical interactions. Furthermore, the hierarchical structure of the porous carbon polyhedra enables a high sulfur loading of up to 76 wt.% and can also buffer the volume changes of active sulfur during the lithiation process. As a result, the NCCNT-Co-S cathode delivers a high initial specific capacity of 1,300 mAh·g⁻¹ at 0.1 C, along with a high capacity of 860 mAh·g⁻¹ after 500 cycles at 1 C, with an extremely low capacity decay of 0.024% per cycle.

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金属有机框架（MOF）衍生的功能性碳基质最近已作为储能材料引起了相当大的关注。但是，开发能够完全防止多硫化物“穿梭”的具有分级结构的MOF衍生碳材料仍然是一项重大挑战。在这里，我们原位合成了含钴纳米颗粒的多孔碳多面体使用沸石咪唑酯骨架67（ZIF-67）作为起始材料生长的N掺杂碳纳米管（CNT）主链（NCCNT-Co）。所获得的NCCNT-Co，在内外表面均具有互连的N掺杂CNT，具有集成的导电网络，可以进一步加速电子/离子在整个硫阴极内部的传输。源自ZIF-67基质和致​​密固定的CNT的介孔结构，再加上均匀掺杂的N原子和Co纳米颗粒，可以通过物理限制和化学相互作用有效地捕获多硫化锂（LiPS）。此外，多孔碳多面体的分级结构能够实现高达76 wt。％的高硫载量，并且还可以缓冲锂化过程中活性硫的体积变化。因此，^-1以0.1C，伴随着860毫安的大容量·克^-1以1C循环500次，以每循环0.024％的极低容量衰减后。

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