多孔泡沫铜支撑锡薄膜阳极材料的制备及性能  

Synthesis and characteristics of porous Sn thin film on foam copper as anode material

作　　者：胡思江[1] 李庆余[1] 黄世稳[2] 王红强[1] 王芳平[1] 钟新仙[1] 

机构地区：[1]广西师范大学化学化工学院,桂林541004 [2]右江民族医学院化学教研室,百色533000

出　　处：《中国有色金属学报》2009年第11期2006-2010,共5页The Chinese Journal of Nonferrous Metals

基　　金：国家自然科学基金资助项目(20763002)

摘　　要：以三维多孔泡沫铜为基底,采用化学镀的方法制备锂离子电池薄膜Sn负极材料。利用扫描电镜、X射线衍射分析以及恒电流充放电测试等手段研究不同厚度薄膜Sn电极的形态、结构和电化学行为。结果表明:化学镀工艺制备的Sn电极表面的大量微孔和岛状突起不仅增大电极的表面积,而且显著缓解电极在充放电过程中体积的变化;其中镀层较薄的样品C薄膜Sn电极的初始充电(脱锂)容量为660.6mA.h/g,经100次循环后,容量保持在299.5mA.h/g,具有较好的循环性能。Three-dimensional porous Sn thin film electrodes were prepared by electroless deposition on foam copper. The microstructures and electrochemical performance of the electrodes were discussed by scanning electron microscopy （SEM）, X-ray diffractometry （XRD） and charge/discharge measurement. The results demonstrate that the porous framework and micro-holes have a great structure advantage in restricting severe volume changes of Sn thin film electrodes. The initial capacity of the thinner film electrode of sample C is 660.6 mA？h/g. After 100 cycles, the capacity of sample C retains 299.5 mA？h/g, showing good cycle performance.

关 键 词：锡薄膜 负极 泡沫铜 锂离子电池 

分 类 号：TM911[电气工程—电力电子与电力传动]