SnO2/MWNTs复合材料的结构表征及其储锂性能研究

SnO₂/MWNTs复合材料的结构表征及其储锂性能研究

刘美梅¹，李小燕²

(1.中国科学院福建物质结构研究所, 福建 福州350002；2.武警福州指挥学院, 福建 福州350002）

摘 要：本文采用简易湿化学法制备二氧化锡/多壁碳纳米管复合材料（SnO₂/MWNTs）。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，并对复合材料进行锂离子电池性能的测试。结果表明，SnO₂纳米颗粒均匀地负载在多壁碳纳米管的管壁，复合材料表现出良好的循环稳定性和较高的比容量。

关键词：SnO₂/MWNTs；TEM；XRD；循环稳定性；比容量

中图分类号：TB33；TM911；TG115.21⁺5.3；TG115.23       文献标识码：A   doi:10.3969/j.1000-6281.2014.02-001

Characterization and lithium storage performance of SnO₂/MWNTs nanocomposite

LIU Mei-mei¹ , LI Xiao-yan²

(1. Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou Fujian, 350002；

2. Fuzhou Command College of Armed Police Force, Fuzhou Fujian, 350002，China)

Abstract：In this paper, a novel composite of SnO₂ nanoparticles coated on multi-walled carbon nanotubes (MWNTs) was synthesized by a simple Wet Chemical method. The morphology and structures of SnO₂/MWNTs composites were characterized by Transmission Electron Microscopy (TEM) and X-ray diffraction(XRD). The results showed thatSnO2 nano-particles were homogeneously distributed on the surface of MWNTs. In the meanwhile, SnO₂/MWNTsshowed superior electrochemical performance with excellent cyclic stability and high capacity.

Keywords：SnO₂-MWNTs；TEM；XRD；cyclic stability；capacity

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