物理化学学报(Wuli Huaxue Xuebao) 2280 Acta Phys. -Chim. Sin. 2016, 32 (9), 2280－2286 September [Article] whxb.pku.edu doi: 10.3866/PKU.WHXB201605124 镁热还原法制备有序介孔Si/C锂离子电池负极材料及其电化学性能 唐艳平 元莎 郭玉忠 1,* 黄瑞安 2,* 王剑华 杨斌 戴永年 (昆明理工大学，材料科学与工程学院，昆明 650093；昆明理工大学，真空冶金国家工程实验室，昆明 650093) 1 2 摘要：以SBA-15为前驱体，在660 °C下通过镁热还原反应得到介孔硅材料，并对其进行碳包覆处理，成功 地制备了有序介孔 Si/C (OMP-Si/C)复合材料。该 OMP-Si/C材料保留了 SBA-15模板的有序蜂窝孔道，并且 形成具有高堆积密度的莲藕链束结构。文中还提出了一个 SBA-15镁热还原液态环境反应模型，探讨了 660 °C下硅的高度有序介孔与莲藕链束结构的形成机理。利用 X射线衍射 (XRD)仪、扫描电子显微镜 (SEM)、透射电子显微镜(TEM)、氮气吸脱附法及拉曼光谱对样品物相和微观形貌进行了表征。这种高度有 序介孔Si/C复合材料具有优异的电化学性能，展现出其在第二代锂电池负极材料领域中的潜在应用价值。 关键词：锂离子电池；介孔硅；负极材料；纳米复合材料；镁热还原法 中图分类号：O646 Magnesiothermic Reduction Preparation and Electrochemical Properties of a Highly Ordered Mesoporous Si/C Anode Material for Lithium-Ion Batteries TANG Yan-Ping YUAN Sha GUO Yu-Zhong1,* HUANG Rui-An2,* WANG Jian-Hua YANG Bin DAI Yong-Nian ( Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, P. R. China; 2 National Engineering Laboratory for Vacuum Metallurgy, Kunming University of Science and Technology, Kunming 650093, P. R. China) Abstract: A highly ordered mesoporous Si/C composite was prepared by magnesiothermic reduction method, using SBA-15 as the precursor at 660 °C with subsequent carbon coating. This Si/C composite preserved the ordered honeycomb pore channels of SBA-15 and exhibited a l