一步合成具有高锂电存储性能的纳米锡氧化物  

One step preparation of nano-scaled SnO_x towards high Li-ion storage

作　　者：黄振萍 孟良荣[2] 明海[2] 李晓伟[2] 

机构地区：[1]江苏省如皋高等师范学院,江苏如皋226500 [2]苏州大学化学电源研究所,江苏苏州215006

出　　处：《电池工业》2013年第6期314-318,共5页Chinese Battery Industry

摘　　要：采用草酸亚锡高温分解的方法一步合成锡氧化物SnOx粉末材料。用X-射线衍射、X射线光电子能谱、扫描电镜和电化学方法对材料的微观结构、形貌和电化学性能进行了研究。结果表明:合成的锡氧化物为SnO2和SnO的复合材料,颗粒的平均粒径约为50nm,尺寸均一,形貌稳定。这种材料的可逆比容量超过1 095mAh/g,60次循环后容量还有215mAh/g。良好的电化学性能表明这种纳米锡氧化物材料有望作为新一代锂离子电池的负极材料。Nano-scaled tin-oxide（SnOx）powders were synthesized with a one-step process by decomposition of tin（Ⅱ）oxalate in air at high temperature.The microstructure,morphology and electrochemical performance of the material were investigated by X-ray diffraction,scanning electron microscopy and electrochemical methods.The results showed that the material was SnO2-SnO nanocomposite with uniform particle size about 50nm.The materials delivered a charge-discharge capacity of more than 1095mAh/g.The capacity still maintained 215mAh/g after being cycled 60times.The good electrochemical performance indicated that SnOxmaterials are promising anode for Li-ion batteries.

关 键 词：锡氧化物 锂离子电池 电化学性质 

分 类 号：TM2[一般工业技术—材料科学与工程]