In this article, we report an active-matrix type SnSnSb alloy, which is sandwiched between nitrogen doped reduced graphene oxide (N-rGO) sheets in the form of a nanocomposite, as a high rate capability anode for lithium-ion batteries. The alloy nanocomposite is synthesized via a cheap and industrially scalable route of microwave-assisted hydrothermal synthesis, and is coated onto electrodeposited 3D microporous nickel foam current collector. The additional mechanical buffering, along with effective electron conduction and lithium ion diffusion pathways provided by N-rGO nanosheets and nickel foam, result in a specific capacity of ∼300 mAhg⁻¹ at a specific current of 4 A g^-1 by preventing both pulverization and delamination of the active material. This combination of properties in N-rGO decorated SnSnSb nanocomposite anode (with 40 wt% N-rGO) on nickel foam results in a 2nd cycle discharge specific capacity of 705 mAhg⁻¹, with a stable reversible specific capacity of 500 mAhg⁻¹ after 200 cycles @ 0.1 A g^-1. The nanocomposite anode also shows capacity retention of 400 mAhg⁻¹ @ 0.8 A g^-1 (1C rate) for 120 cycles. As compared to low N-rGO (10 wt%) decorated nanocomposite, the high N-rGO (40 wt%) nanocomposite shows improved performance with a nominal sacrifice of capacity which is at par, if not superior, to the existing commercial graphitic anodes.

在本文中，我们报告了一种活性基质型Sn SnSb合金，该材料夹在以纳米复合材料形式掺杂的氮掺杂还原氧化石墨烯（N-rGO）片之间，是锂离子电池的高倍率能力阳极。合金纳米复合材料是通过廉价的，工业上可扩展的微波辅助水热合成路线合成的，并涂覆在电沉积的3D微孔镍泡沫集电器上。的额外的机械缓冲，以有效沿电子传导和锂离子的扩散路径被N-RGO纳米片和泡沫镍，结果在约300 mAhg的比容量设置^-1处的特定的电流4 A G ^-1通过防止活性物质的粉碎和分层。在镍泡沫上用N-rGO装饰的Sn SnSb纳米复合阳极（含40 wt％N-rGO）中的这种性能组合导致第二次循环放电比容量为705 mAhg ^-1，稳定的可逆比容量为500 mAhg ^-1在200次循环后@ 0.1 A g ^-1。纳米复合阳极还显示出在120 A循环下，在0.8 A g ^-1（1C速率）下的容量保持为400 mAhg ^-1。与低N-rGO（10 wt％）装饰的纳米复合材料相比，高N-rGO（40 wt％）纳米复合材料显示出改善的性能，但名义上的容量损失与现有的商用石墨阳极相当，甚至不超标。 。