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Acta Physico-Chimica Sinica  2010, Vol. 26 Issue (03): 561-566    DOI: 10.3866/PKU.WHXB20100231
ELECTROCHEMISTRY     
Electrodeposition and Electrochemical Properties of Ternary Sn-Co-Zn Alloy Electrodes as Anodes for Lithium-Ion Batteries
CHANG Yu-Qing, HUANG Ling, SUN Shi-Gang
State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian Province, P. R. China
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Abstract  

A ternary Sn-Co-Zn alloy film was successfully prepared by electrodepositi on copper foil. Electrochemical deposition of the Sn-Co-Zn alloy was studied by cyclic voltammetry (CV) and chronoamperometry (CA). The structure and electrochemical performance of the electroplated Sn-Co-Zn alloy electrodes were also investigated in detail. The CV and CA results revealed that the initial deposition kinetics of the Sn-Co-Zn alloy corresponds to a model that includes a three-dimensional progressive nucleation and diffusion controlled growth. XRD results showed that the electrodeposited Sn-Co-Zn alloy consists of CoSn3, Co3Sn2, and Zn phase. Electrochemical tests indicated that at the first cycle, the discharge capacity (desertion) and columbic efficiency are measured 751 mAh·g-1 and 88%, respectively, at the 30th cycle, the Sn-Co-Zn alloy electrodes still delivered a discharge capacity of 510 mAh·g-1. The good lithium storage performance of the Sn-Co-Zn electrode is ascribed to multi-phase structure of the electrode.



Key wordsLithium-ion battery      Anode      Sn-Co-Zn alloy electrode      Electrodeposition      Electrochemical nucleation and growth     
Received: 22 July 2009      Published: 04 January 2010
MSC2000:  O646  
Corresponding Authors: HUANG Ling     E-mail: huangl@xmu.edu.cn
Cite this article:

CHANG Yu-Qing, HUANG Ling, SUN Shi-Gang. Electrodeposition and Electrochemical Properties of Ternary Sn-Co-Zn Alloy Electrodes as Anodes for Lithium-Ion Batteries. Acta Physico-Chimica Sinica, 2010, 26(03): 561-566.

URL:

http://www.whxb.pku.edu.cn/Jwk_wk/wlhx/10.3866/PKU.WHXB20100231     OR     http://www.whxb.pku.edu.cn/Jwk_wk/wlhx/Y2010/V26/I03/561

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