碳包覆锡锑合金纳米纤维的制备及应用

以氧化锡锑纳米颗粒(Sn0.92Sb0.08O2.04)为前驱体,葡萄糖为碳源,用水热合成法制备碳包覆锡锑合金,然后采用静电纺丝技术制备碳包覆Sn Sb/C纳米纤维。应用透射电子显微镜、扫描电子显微镜对碳包覆锡锑合金纳米颗粒及纤维的形貌进行表征,利用X射线衍射仪分析了碳包覆锡锑合金混合纳米纤维的晶型结构。研究了碳包覆Sn Sb/C纳米纤维作为一种高容量锂离子电池负极材料的电化学性能。结果表明,成功制备了碳包覆锡锑合金纳米纤维;随着纳米纤维中碳包覆锡锑合金含量的增加,制备的负极材料具有较高的可逆容量及较好的循环性能。

Preparation and application of carbon-coated tin antimony alloy nanofibers

Carbon-coated tin antimony alloy particles were prepared by hydrothermal method using antimony tin oxide nanoparticles (Sn0.92 Sb0.08 O2.04) as the precursor and glucose as carbon source, then the electrostatic spinning technique was used to prepare carbon coated tin antimony alloy nanofibers (SnSb@C/C). Transmission electron microscopy and scanning electron microscope were used to characterize the morphology of carbon coated tin antimony nanoparticles and nanofibers, and X-ray diffractometer were measured to assess the structure of nanofibers. The electrochemical performance of SnSb@C/C nanofibers as cathode materials for lithium ion batteries was researched. The experimental results showed that the carbon coated tin antimony alloy nanofibers were prepared successfully; with the increase of carbon coated tin antimony alloy content of nanofiber, cathode material prepared has the high irreversible capacity and good cycle performance .