微波溶剂热法合成锂离子电池负极材料Sn4 P3／多壁碳纳米管的研究

摘要

以乙二胺为溶剂，锡粉和红磷为原料，利用微波溶剂热方法合成出Sn4P3／MWCNTs复合材料。利用X射线衍射和透射电子显微镜对其进行定性分析和微观形貌观察，对其作为锂离子负极材料的电化学性能进行研究。在电流密度为500 mA／g时，当Sn4P3／MWCNTs的质量比为3∶1时放电容量能达到517 mAh／g，Sn4P3／MWCNTs复合材料有望成为一种新型锂离子电池负极材料。%Sn4P3/MWCNTs composite materials were prepared by the microwave solvent thermal method using Sn and red P powders solved in liquid ethylenediamine.The phases and morphologies of the products were characterized by means of X⁃ray powder diffraction XRD and transmission electron microscopy TEM . The electrochemical properties of the anode materials for lithium ion were studied.The Sn4P3 ∶ MWCNTs=3 ∶ 1 anode can deliver a reversible capacity up to 517 mAh/g at current density 500 mA/g.Large reversible capacity of Sn4P3 made it a potential anode material for lithium⁃ion batteries.