Nanostructured hybrid metal sulfides have attracted intensive attention due to their fascinating properties that are unattainable by the single‐phased counterpart. Herein, we report an efficient approach to construct cobalt sulfide/molybdenum disulfide (Co₉S₈/MoS₂) wrapped with reduced graphene oxide (rGO). The unique structures constructed by ultrathin nanosheets and synergetic effects benefitting from bimetallic sulfides provide improved lithium ions reaction kinetics, and they retain good structural integrity. Interestingly, the conductive rGO can facilitate electron transfer, increase the electronic conductivity and accommodate the strain during cycling. When evaluated as anode materials for lithium‐ion batteries (LIBs), the resultant reduced graphene oxide‐coated cobalt sulfide/molybdenum disulfide (Co₉S₈/MoS₂@rGO) nanotubes deliver high specific capacities of 1140, 948, 897, 852, 820, 798 and 784 mAh g⁻¹ at the various discharging current densities of 0.2, 0.5, 1, 2, 3, 4 and 5 A g⁻¹, respectively. In addition, they can maintain an excellent cycle stability with a discharge capacity of 807 mAh g⁻¹ at 0.2 A g⁻¹ after 70 cycles, 787 mAh g⁻¹ at 1 A g⁻¹ after 180 cycles and 541 mAh g⁻¹ at 2 A g⁻¹ after 200 cycles. The proposed method may offer fundamental understanding for the rational design of other hybrid functional composites with high Li‐storage properties.

中文翻译：

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由Co9S8 / MoS2超薄纳米片构建的多层纳米管，包裹了还原的氧化石墨烯，用于高级锂存储

纳米结构的杂化金属硫化物由于其令人着迷的特性而引起了广泛的关注，而单相对应物则无法实现。在这里，我们报告了一种有效的方法来构造硫化钴/二硫化钼（Co ₉ S ₈ / MoS ₂）包裹着还原的氧化石墨烯（rGO）。由超薄纳米片构造的独特结构和受益于双金属硫化物的协同效应提供了改进的锂离子反应动力学，并且保留了良好的结构完整性。有趣的是，导电rGO可以促进电子传递，增加电子电导率并适应循环过程中的应变。当作为锂离子电池（LIB）的负极材料进行评估时，所得还原的氧化石墨烯涂层硫化钴/二硫化钼（Co ₉ S ₈ / MoS ₂ @rGO）纳米管可提供1140、948、897、852的高比容量，820、798和784 mAh g ^-1在0.2、0.5、1、2、3、4和5 A g的各种放电电流密度下^-1。另外，它们可以维持优异的循环稳定性，在70次循环后在0.2 A g ^-1时的放电容量为807 mAh g ^-1，在180次循环后在1 A g ^-1时的放电容量为787 mAh g ^-1和541 mAh g ^-1 200个循环后在2 A g ^-1下。所提出的方法可能为合理设计具有高储锂性能的其他杂化功能复合材料提供基础。