Layered molybdenum disulfide (MoS₂) has received much attention as one of the most promising energy-storage and conversion materials for Li/Na ion batteries. Here, a simple and effective approach is proposed for the rational design and preparation of hierarchical three-d imensional (3D) amorphous N-doped carbon nanotube@MoS₂ nanosheets (3D-ANCNT@MoS₂) via a simple hydrothermal method, followed by an annealing process. With such a unique nanoarchitecture, ultrathin MoS₂ nanosheets grown on the external surfaces of polypyrrole-derived ANCNTs are assembled to form a hierarchical 3D nanoarchitecture, where the adopted ANCNTs serve not only as the template and continuous conductive matrix, but can also prevent MoS₂ from aggregating and restacking, and help to buffer the volumetric expansion of MoS₂ during cycling. More importantly, when evaluated as an anode material for lithium-ion batteries, the 3D-ANCNT@MoS₂ composite exhibits excellent cycling stability, superior rate performance, and reversible specific capacity as high as 893.4 mAh•g^-1 at 0.2 A•g^-1 after 200 cycles in a half battery, and 669.4 mAh•g^-1 at 0.2 A•g^-1 after 100 cycles in the 3D-ANCNT@MoS₂//LiCoO₂ full battery. With respect to sodium-ion batteries, the outstanding reversible capacity, excellent rate behavior, and good cycling performance of 3D-ANCNT@MoS₂ composites are also achieved.

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作为Li / Na离子电池最有希望的储能和转换材料之一，层状二硫化钼（MoS ₂）受到了广泛的关注。在这里，提出了一种简单有效的方法，通过简单的水热方法合理设计和制备分层的三维（3D）无定形N掺杂碳纳米管@MoS ₂纳米片（3D-ANCNT @ MoS ₂），然后退火过程。通过这种独特的纳米结构，可以将聚吡咯衍生的ANCNT外表面上生长的超薄MoS ₂纳米片组装起来，形成分层的3D纳米结构，其中采用的ANCNT不仅可以用作模板和连续导电基质，还可以防止MoS ₂避免聚集和重新堆叠，并有助于缓冲MoS ₂在循环过程中的体积膨胀。更重要的是，当被评估为锂离子电池的负极材料时，3D-ANCNT @ MoS ₂复合材料具有出色的循环稳定性，优异的倍率性能以及在0.2 A•g时可逆比容量高达893.4 mAh•g ^-1。^-1 200次循环在半电池，和669.4毫安时•克后^-1 0.2 A•克^-1在3D-ANCNT @的MoS 100次循环后₂ //的LiCoO ₂充满电池。对于钠离子电池，3D-ANCNT @ MoS ₂具有出色的可逆容量，出色的倍率性能和良好的循环性能 复合材料也可以实现。

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