Transition metal dichalcogenides (TMDs, typically MoS₂) have shown great promise as anodes for high-performance lithium-ion batteries (LIBs) due to the layered structure. However, the low electric and ionic conductivities and the large volume expansion of MoS₂ during lithiation inevitably result in a fast capacity decrease and limited cycling life. In this work, a unique sheet-on-tube micro/nanostructure was designed and realized to tackle the above mentioned drawbacks. In detail, MoS₂ nanosheets are perpendicularly anchored on the N-doped carbon microtubes (NCMs) by a facile approach. NCMs was selected as the support to prevent aggregation of MoS₂ nanosheets, and serve as the pathway for electron conduction, as well as a media to alleviate the volume change of MoS₂ during lithiation/delithiation. Due to the advantageous structure, the MoS₂@NCMs show significantly enhanced lithium storage properties in comparison to pure MoS₂. The design strategy and mechanism demonstrated in this work is potentially useful for developing high-capacity electrode materials for LIBs.

过渡金属二卤化物（TMD，通常为MoS ₂）由于具有分层结构，已显示出作为高性能锂离子电池（LIB）阳极的广阔前景。然而，在锂化过程中，MoS ₂的低电导率和离子电导率以及大体积膨胀不可避免地导致容量快速降低和循环寿命受限。在这项工作中，设计并实现了独特的管上片状纳米结构，以解决上述缺陷。详细地，通过简便的方法将MoS ₂纳米片垂直锚固在N掺杂的碳微管（NCM）上。选择NCM作为支持以防止MoS ₂聚集纳米片，并作为电子传导的途径，以及减轻锂化/脱锂过程中MoS ₂体积变化的介质。由于有利的结构，与纯MoS ₂相比，MoS ₂ @NCMs显着增强了锂存储性能。这项工作中展示的设计策略和机制对于开发用于LIB的高容量电极材料可能很有用。