Abstract A novel graphene-like heterostructure composed of melamine-assisted liquid-exfoliated graphene (G) and 1T-MoS2 nanosheets is prepared by a facile hydrothermal process. Synergistic effects between the layered 1T-MoS2 nanosheets and graphene flakes contribute to high-efficiency electron/ion transport pathway and structural stability, which are beneficial for the rate performance and long cycle life of the 1T-MoS2/G electrode. As a negative electrode material for lithium-ion batteries, the as-developed 1T-MoS2/G electrode delivers a high reversible capacity of 1482 mAh g−1 at a current density of 100 mA g−1 and a reversible capacity of 907 mAh g−1 at 500 mA g−1 after 60 cycles. Moreover, the 1T-MoS2/G nanostructures also exhibit an excellent rate capability, and a long cycle life (667 mAh g−1 at 2000 mA g−1 after 500 cycles). These results demonstrate potential applications of the 1T-MoS2/G composites for energy storage. The design strategy and mechanism may play a key role in the development of other layered transition metal dichalcogenides (TMDs) as promising heterostructures for high-performance LIBs.

中文翻译：

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1T-MoS 2 在液体剥离石墨烯上的原位生长：一种独特的类石墨烯异质结构，可实现优异的锂存储

摘要 通过简便的水热法制备了一种由三聚氰胺辅助液体剥离石墨烯 (G) 和 1T-MoS2 纳米片组成的新型类石墨烯异质结构。层状1T-MoS2纳米片和石墨烯薄片之间的协同效应有助于高效电子/离子传输途径和结构稳定性，这有利于1T-MoS2/G电极的倍率性能和长循环寿命。作为锂离子电池负极材料，所开发的1T-MoS2/G电极在100 mA g-1的电流密度下具有1482 mAh g-1的高可逆容量和907 mAh g-1的可逆容量-1 在 500 mA g-1 60 次循环后。此外，1T-MoS2/G 纳米结构还表现出优异的倍率性能和长循环寿命（500 次循环后在 2000 mA g-1 下为 667 mAh g-1）。这些结果证明了 1T-MoS2/G 复合材料在储能方面的潜在应用。该设计策略和机制可能在其他层状过渡金属二硫属化物 (TMD) 的开发中发挥关键作用，作为高性能 LIB 的有前途的异质结构。