摇铃状Fe3O4@C复合材料的结构表征及其储锂性能研究

摇铃状Fe₃O₄@C复合材料的结构表征及其储锂性能研究

刘美梅¹，陈国新²

(1.中国科学院福建物质结构研究所, 福建福州350002；2. 中国科学院宁波材料技术与工  程研究所，浙江宁波315201）

摘要：本文采用简易湿化学法制备新颖的摇铃状Fe₃O₄@C纳米复合材料。利用X射线衍射仪（XRD）和透射电子显微镜（TEM）技术对其形貌、成分及微观结构进行表征，并对复合材料进行电池性能测试。结果表明，由于Fe₃O₄@C纳米复合材料独特的摇铃状结构，其作为锂离子电池负极表现出良好的电化学性能，具有良好的循环稳定性和较高的比容量。

关键词：摇铃状Fe₃O₄@C；TEM；XRD；循环稳定性；比容量

中图分类号：TB383；TG115.21⁺5.3；TG115.23   文献标识码：A

  doi：10.3969/j.1000-6281.2014.03.003

Characterization and lithium storage performance of yolk–shell

Fe₃O₄@C nanocomposite

LIU Mei-mei¹, CHEN Guo-xin²

(1. Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou Fujian 350002；2. Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo Zhejiang 315201，China)

Abstract：In this paper, a novel yolk-shell Fe₃O₄@C composite had been synthesized via a simple wet chemical method. The morphologies, microstructures and chemical composition of Fe₃O₄@Cwere characterized by transmission electron microscopy (TEM) and X-ray diffraction(XRD). The Fe₃O₄@C composite exhibited an excellent electrochemical performance as anode of lithium-ion battery (LIBs) with an excellent cyclic stability and high capacity, due to the unique yolk-shell structure,

Keyword：yolk-shellFe₃O₄@C；TEM；XRD；cyclic stability；capacity 

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