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Citation: HUANG Ling, JIANG Hong-Hong, KE Fu-Sheng, FAN Xiao-Yong, ZHUANG Quan-Chao, YANG Fang-Zu, SUN Shi-Gang. Structure and Properties of Three-dimensional Reticular Sn-Co Alloy Electrodes as Anode Material for Lithium Batteries[J]. Acta Physico-Chimica Sinica, ;2006, 22(12): 1537-1541. doi: 10.3866/PKU.WHXB20061220 shu

Structure and Properties of Three-dimensional Reticular Sn-Co Alloy Electrodes as Anode Material for Lithium Batteries

1.
(Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China)

Received Date: 19 June 2006
Available Online: 6 December 2006

The three-dimensional reticular Sn-Co alloy deposits were prepared by electroplating. The structure and electrochemical performance of the electroplated three-dimensional reticular Sn-Co alloys have been investigated in detail. Experimental results show that the Sn-Co alloy film is of hexa nal solid solution, with Sn as the solvent, Co as the solute. Electrochemical tests show that the three-dimensional reticular Sn-Co alloy coating electrodes can deliver a discharge capacity of 493.4 mAh•g−1 in the first cycle. At the 50th cycle the charge was 329.6 mAh•g−1. The three-dimensional reticular structure in Sn-Co alloy electrode was beneficial in reducing the irreversible capacity of Sn-Co alloy electrode at initial charge-discharge, and in relaxing the volume expansion during cycling, which improved the cyclability of Sn-Co alloy electrode. They are also beneficial to diffusion of Li into /out of macroporous materials, and improve coulomb efficiency in charge-discharge cycle.
- Electroplating;Three-dimensional reticular Sn-Co alloy;Lithium ion battery;Electrochemical performance
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