Abstract SnS/reduced graphene oxide@Cu nanocomposite has been fabricated via a two-step synthetic strategy. In the composite material, most of SnS nanoplates are embedded in reduced graphene oxide. Partial SnS nanoplates exposed on the surface of reduced graphene oxide, have been largely coated with Cu nanoparticles. As a result, the nanocomposite has demonstrated high reversible lithium storage. After 640 cycles at 100 mA g−1, the composite remains a reversible capacity of 710 mAh g−1. The results from the electrochemical impedance spectroscopy suggest that the introduction of Cu can reduce the transfer resistance of the electrode and the enhanced lithium storage properties can be attributed to the synergistic effect of SnS, reduced graphene oxide and Cu.

中文翻译：

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具有高可逆储锂的SnS/还原氧化石墨烯@Cu纳米复合材料的制备

摘要 SnS/还原氧化石墨烯@Cu 纳米复合材料是通过两步合成策略制备的。在复合材料中，大部分 SnS 纳米片嵌入在还原氧化石墨烯中。暴露在还原氧化石墨烯表面上的部分 SnS 纳米片已大量涂覆有 Cu 纳米颗粒。结果，纳米复合材料表现出高可逆锂存储。在 100 mA g-1 下循环 640 次后，复合材料的可逆容量仍为 710 mAh g-1。电化学阻抗谱的结果表明，Cu 的引入可以降低电极的转移电阻，并且增强的锂存储性能可归因于 SnS、还原氧化石墨烯和 Cu 的协同作用。