| Nano-sized Sn/MWNTs and MWNTs Served as the Anode of Lithium Ion Battery |
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| 引用本文： | LIN Kezhi WANG Xiaolin XU Yanhui LUO Guohua. Nano-sized Sn/MWNTs and MWNTs Served as the Anode of Lithium Ion Battery[J]. 武汉理工大学学报(材料科学英文版), 2006, 21(4): 60-63. DOI: 10.1007/BF02841206 |
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| 作者姓名： | LIN Kezhi WANG Xiaolin XU Yanhui LUO Guohua |
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| 作者单位： | Department of Chemical Engineering, Tsinghua University, Beijing 100084, China |
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| 基金项目： | 国家重点基础研究发展计划(973计划) |
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| 摘 要： | A chemical deposition was supposed to be an effwient method in preparation of nano-sized Sn/ MWNTs. The nanoconmposites of MWNTs and Sn/ MWNTs were both used as anodes of lithium ion battery. The special capacities and coulomb efficiencies of Snl MWNTs were studied by means of electrochemical methods. The coating of Sn on MWNTs observed by TEM was amorphous and nano-sized. The reversible capacity of Sn/ MWNTs , which was much larger than that of MWNTs , was 824 mAh/ g in the 1 st charge and discharge cycle. The coulomb efficiency of Sn/ MWNTs in the 1 st cycle was increased by 16% compared with that of MWNTs. The additional Sn, which was 37wt% of total Sn/ MWNTs＇ weight, introduced the additional reversible lithiation capacity at least 250 mAh/ g in the 40 charge and discharge cycles. The dispersing degree of Sn on MWNTs was the main reason for the influence of the electrochemical perfomance of the Sn/ MWNTs . Sn/ MWNTs is proved to be a promising candidate as an anode of lithium ion battery.
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| 关 键 词： | 纳米尺度 阳极 锂离子电池 库伦效率 |
| 收稿时间： | 2005-02-25 |
| 修稿时间： | 2006-05-11 |
Nano-sized Sn/MWNTs and MWNTs served as the anode of lithium ion battery |
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| Lin Kezhi Ph D,Wang Xiaolin,Xu Yanhui,Luo Guohua. Nano-sized Sn/MWNTs and MWNTs served as the anode of lithium ion battery[J]. Journal of Wuhan University of Technology. Materials Science Edition, 2006, 21(4): 60-63. DOI: 10.1007/BF02841206 |
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| Authors: | Lin Kezhi Ph D Wang Xiaolin Xu Yanhui Luo Guohua |
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| Affiliation: | (1) Department of Chemical Engineering, Tsinghua University, 100084 Beijing, China |
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| Abstract: | A chemical deposition was supposed to be an efficient method in preparation of nano-sized Sn/MWNTs. The nanocomposites of MWNTs and Sn/MWNTs were both used as anodes of lithium ion battery. The special capacities and coulomb efficiencies of Sn/MWNTs were studied by means of electrochemical methods. The coating of Sn on MWNTs observed by TEM was amorphous and nano-sized. The reversible capacity of Sn/MWNTs, which was much larger than that of MWNTs, was 824 mAh/g in the 1st charge and discharge cycle. The coulomb efficiency of Sn/MWNTs in the 1st cycle was increased by 16% compared with that of MWNTs. The additional Sn, which was 37wt% of total Sn/MWNTs' weight, introduced the additional reversible lithiation capacity at least 250 mAh/g in the 40 charge and discharge cycles. The dispersing degree of Sn on MWNTs was the main reason for the influence of the electrochemical performance of the Sn/MWNTs. Sn/MWNTs is proved to be a promising candidate as an anode of lithium ion battery. |
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| Keywords: | multi-walled carbon nanotubes (MWNTs) deposition nanocomposites lithium ion battery tin-based materials |
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