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| 锡锑合金/石墨复合材料作为锂离子电池负极的研究 | |
| 引用本文： | 王忠,田文怀,李星国. 锡锑合金/石墨复合材料作为锂离子电池负极的研究[J]. 功能材料, 2007, 38(1): 109-112 |
| 作者姓名： | 王忠 田文怀 李星国 |
| 作者单位： | 1. 北京科技大学,材料物理与化学系,北京,100083;北京大学,化学与分子工程学院,北京,100871 2. 北京科技大学,材料物理与化学系,北京,100083 3. 北京大学,化学与分子工程学院,北京,100871 |
| 摘 要： | 通过球磨的方法制备了锡锑合金/石墨复合材料,应用XRD、SEM和电化学方法对锡锑合金/石墨复合材料的微观结构和电化学性能做了研究.复合材料的首次可逆容量达到416 mAh/g,锡锑合金/石墨复合材料的循环稳定性相比于锡锑合金有了很明显的改善.对锡锑合金含量与复合材料吸放锂性能的研究表明,含锡锑合金50%的锡锑合金/石墨复合材料循环稳定性最好,到第20个循环时,容量保持率为88%(锡锑合金为81%),是有希望的锂离子电池负极材料. |
| 关 键 词： | 锂离子电池 锡锑合金 复合材料 负极材料 球磨 |
| 文章编号： | 1001-9731(2007)01-0109-04 |
| 修稿时间： | 2006-07-18 |
A study on SnSb alloy-graphite composites as anode materials for lithium ion batteries |
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| WANG Zhong,TIAN Wen-huai,LI Xing-guo. A study on SnSb alloy-graphite composites as anode materials for lithium ion batteries[J]. Journal of Functional Materials, 2007, 38(1): 109-112 | |
| Authors: | WANG Zhong TIAN Wen-huai LI Xing-guo |
| Affiliation: | 1. Department of Materials Physics and Chemistry, University of Science and Technology Beijing,Beijing 100083,China; 2. College of Chemistry and Molecular Engineering, Peking University, Beijing 100871,China |
| Abstract: | SnSb alloy-graphite composites have been prepared by ball-milling a mixture of SnSb alloy and graphite powder.The microstructure and electrochemical performance of the composites are characterized by X-ray diffraction,SEM and an electrochemical method.The mechanism of lithium ions adsorption/extraction in the composites was found to be lithium ions reaction with SnSb and graphite.The reversible capacities of the composites reached 416mAh/g,SnSb alloy-graphite composite electrodes show better cycleability than SnSb alloy.By analyzing the relation between SnSb contents and the properties of the composites,it is showed that SnSb50%-graphite has the best cycle stability,the capacity retention at the 20th cycle is 88%(81% at SnSb alloy).These composites appear to be promising candidates for negative electrodes in lithium rechargeable batteries. |
| Keywords: | lihium ion battery SnSb alloy composite electrode anode material ball-milling |
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