Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第19卷    第11期    总第128期    2009年11月

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文章编号:1004-0609(2009)11-2006-05
多孔泡沫铜支撑锡薄膜阳极材料的制备及性能
胡思江1,李庆余1,黄世稳2,王红强1,王芳平1,钟新仙1

(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
)

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660.6 mA∙h/g,经100次循环后,容量保持在299.5 mA∙h/g,具有较好的循环性能。

 

关键字: 锡薄膜;负极;泡沫铜;锂离子电池

Synthesis and characteristics of porous Sn thin film on
foam copper as anode material
HU Si-jiang1, LI Qing-yu1, HUANG Shi-wen2, WANG Hong-qiang1, WANG Fang-ping1, ZHONG Xin-xian1

1. School of Chemical and Chemistry Engineering, Guangxi Normal University, Guilin 541004, China;
2. Department of Chemistry, Youjiang Medical College for Nationalities, Baise 533000, China

Abstract: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.

 

Key words: Sn thin film; negative electrode; foam copper; lithium ion battery

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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