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Acta Physico-Chimica Sinica  2006, Vol. 22 Issue (11): 1409-1412    DOI: 10.3866/PKU.WHXB20061120
Note     
Preparation, Characterization and Electrochemical Li-absorption/extraction Behaviors of Nanosized Co-Sn Intermetallic Compounds
XIE Jian;ZHAO Xin-Bing;YU Hong-Ming;QI Hao;CAO Gao-Shao;TU Jiang-Ping
Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, P. R. China
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Abstract  Three nanosized Co-Sn intermetallic compounds, namely, CoSn2, CoSn, and Co3Sn2, were prepared by solvothermal route and studied as new candidate anode materials for secondary lithium-ion batteries. The as-prepared powders were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and field emission scanning electron microscopy (FESEM). It was found that these three intermetallic compounds showed a high charge-discharge stability. However, they exhibit low electrochemical activity, especially for Co3Sn2, whose first charge capacity is only 93 mAh•g−1, because Li-ions cannot reach the interior of the crystal due to the low Li-ions diffusion rate.

Key wordsLithium-ion batteries      Anode materials      Solvothermal method      Electrochemical performances     
Received: 10 April 2006      Published: 06 November 2006
Corresponding Authors: XIE Jian     E-mail: xiejian1977@zju.edu.cn
Cite this article:

XIE Jian;ZHAO Xin-Bing;YU Hong-Ming;QI Hao;CAO Gao-Shao;TU Jiang-Ping . Preparation, Characterization and Electrochemical Li-absorption/extraction Behaviors of Nanosized Co-Sn Intermetallic Compounds. Acta Physico-Chimica Sinica, 2006, 22(11): 1409-1412.

URL:

http://www.whxb.pku.edu.cn/Jwk_wk/wlhx/10.3866/PKU.WHXB20061120     OR     http://www.whxb.pku.edu.cn/Jwk_wk/wlhx/Y2006/V22/I11/1409

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