Abstract Three-dimensional foam with integrated core-shell carbon nanotubes-MoS2 with reduced graphene oxide (MoS2/CNT/rGO) has been fabricated by a hydrothermal reaction together with freeze drying. Thin MoS2 nanosheets are coated on the carbon nanotubes (CNT) and distributed on the surface of reduced graphene oxide (rGO) nanosheets. One-dimensional CNT and two-dimensional rGO conductive network not only effectively improves the electron transport and mechanical property, but also prevents the aggregation of MoS2 nanosheets. MoS2 with large interlayer spacing provides more active sites and channels for insertion of lithium ions, while CNT and rGO network acts as a conductive skeleton. The 3D porous and interconnected foam can directly as electrode without any binders and conductive agents. After optimizing the ratio of CNT to rGO, the MoS2/CNT/rGO foam as a freestanding electrode for lithium ion batteries exhibits a high specific capacity of 745 mAh g−1 at a current density of 0.1 A g−1 after 170 cycles and 420 mAh g−1 at 0.5 A g−1 after 200 cycles. This method is easily extended to prepare the other electrode materials, especially the freestanding and flexible electrode.

中文翻译：

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具有还原氧化石墨烯泡沫的三维集成碳管/MoS 2 作为锂离子电池的无粘合剂负极

摘要 通过水热反应和冷冻干燥制备了具有集成核壳碳纳米管-MoS2 和还原氧化石墨烯的三维泡沫 (MoS2/CNT/rGO)。薄的二硫化钼纳米片涂覆在碳纳米管 (CNT) 上并分布在还原氧化石墨烯 (rGO) 纳米片的表面上。一维 CNT 和二维 rGO 导电网络不仅有效提高了电子传输和机械性能，而且防止了 MoS2 纳米片的聚集。具有大层间距的 MoS2 为锂离子的插入提供了更多的活性位点和通道，而 CNT 和 rGO 网络充当导电骨架。3D 多孔互连泡沫可直接作为电极，无需任何粘合剂和导电剂。优化 CNT 与 rGO 的比例后，MoS2/CNT/rGO泡沫作为锂离子电池的独立电极在170次循环后在0.1 A g-1的电流密度下表现出745 mAh g-1的高比容量和0.5 A g-下的420 mAh g-1 1 200 次循环后。这种方法很容易扩展到制备其他电极材料，特别是独立式和柔性电极。