Abstract Molybdenum disulfide possesses a layered 2D structure and a high reversible capacity, which is an ideal candidate electrode for sodium ion batteries. However, the bulk MoS2 suffers from low electronic conductivity and volume variation during cycling, resulting in inferior electrode reaction kinetics and fast capacity decay. In this work, we develop a hierarchical structure comprising MoS2 nanosheets strongly coupled with carbon microtubes (CMTs) derived from cotton by a simple hydrothermal method and a subsequent heat-treatment procedure. The MoS2 nanosheets, the amorphous carbon, and the carbon microtubes in the composite are synergistically building a robust structure, which is favorable for fast sodium ions insertion/extraction and electrons transmission. The prepared MoS2/CMTs electrodes as anodes for sodium ion batteries display stable cycle performance and extended cycle life.

中文翻译：

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MoS 2 纳米片与棉衍生碳微管强耦合用于超快钠离子插入

摘要 二硫化钼具有层状二维结构和高可逆容量，是理想的钠离子电池候选电极。然而，块体二硫化钼在循环过程中电子电导率低和体积变化，导致电极反应动力学差和容量衰减快。在这项工作中，我们通过简单的水热法和随后的热处理程序开发了一种包含 MoS2 纳米片与源自棉花的碳微管 (CMT) 强耦合的分层结构。复合材料中的 MoS2 纳米片、无定形碳和碳微管协同构建了一个坚固的结构，有利于钠离子的快速嵌入/脱嵌和电子传输。