Lithium-ion batteries (LIBs) have become commercialized technologies for the modern and future world, but commercial batteries using graphite still have a low specific capacity and are concerned with safety issues. Silicon (Si) and antimony (Sb) nanocomposites have the tendency to be synthesized as high-energy-density anode materials which can be a solution for the above-mentioned problems. This work reported the synthesis methods and characterization of Sb and Si composited with nitrogen-doped graphene (SbSi/NrGO) by facile chemical method and thermal treatment. Si was obtained by magnesiothermic reduction of SiO₂ derived from rice husk, waste from the agricultural process. To study the phases, particle distributions, and morphologies, all prepared composites were characterized. In this experiment, the phase compositions were confirmed as c-Si, t-Si, SiC, Sb, and shifted peaks of expanded C which were caused by NrGO synthesis. Interestingly, a good distribution of Si and Sb particles on the NrGO surface was obtained in 15Sb15Si/NrGO composition. It could be due to appropriate Sb and Si contents on the NrGO surface area in composite materials. Morphological identification of synthesized products represented the Sb and Si particles in nanoscale dispersed on thin wrinkled-paper NrGO. These results suggested that the synthesis method in this paper is appropriate to prepare SbSi/NrGO nanocomposites to be used as high-performance anode materials in high-performance LIBs for advanced applications.

中文翻译：

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SbSi/N 掺杂石墨烯纳米复合材料制备高性能锂离子电池的比例效应

锂离子电池 (LIB) 已成为现代和未来世界的商业化技术，但使用石墨的商业电池仍然具有较低的比容量并且涉及安全问题。硅（Si）和锑（Sb）纳米复合材料具有合成高能量密度负极材料的趋势，可以解决上述问题。本工作报道了通过简便的化学方法和热处理合成 Sb 和 Si 与氮掺杂石墨烯 (SbSi/NrGO) 的合成方法和表征。_{通过 SiO 2}的磁热还原得到 Si来源于稻壳，农业过程中产生的废物。为了研究相、颗粒分布和形态，对所有制备的复合材料进行了表征。在本实验中，相组成被确认为C-硅，吨-Si、SiC、Sb 和由 NrGO 合成引起的膨胀 C 的偏移峰。有趣的是，在 15Sb15Si/NrGO 组合物中获得了 Si 和 Sb 颗粒在 NrGO 表面上的良好分布。这可能是由于复合材料中 NrGO 表面积上适当的 Sb 和 Si 含量。合成产物的形态学鉴定代表了分散在薄皱纸 NrGO 上的纳米级 Sb 和 Si 颗粒。这些结果表明，本文的合成方法适用于制备 SbSi/NrGO 纳米复合材料，可用作高性能锂离子电池中的高性能负极材料，以用于高级应用。