Structure and Properties of Electrodeposited Sn-Co Alloy Electrodes as Anode Material for Lithium-Ion Secondary Batteries

Authors

Hong-hong JIANG, ,ZHOU Shun-wei,KE Fu-sheng, YANG Fang-zu,FAN Xiao-yong,SUN Shi-gang(Department of Chemistry,College of Chemistry and Chemical Engineering,Xiamen University,Xiamen 361005,Fujian,China;
Ling HUANG, ,ZHOU Shun-wei,KE Fu-sheng, YANG Fang-zu,FAN Xiao-yong,SUN Shi-gang(Department of Chemistry,College of Chemistry and Chemical Engineering,Xiamen University,Xiamen 361005,Fujian,China;

Abstract

The Sn-Co alloy deposits were prepared by electroplating.The structure and electrochemical performance of the electroplated Sn-Co alloys have been investigated in detail.Experimental results show that the porous Sn-Co alloy film exhibits hexagonal solid solution,with Sn as the solvent, Co as the solute.The texture of the Sn-Co alloy coating exhibits(110) preferred orientation.Electrochemical tests show that the porous Sn-Co alloy coating electrodes can deliver a discharge capacity of 643mAh/g in the first cycle.At the 20~(h) cycle the charge was 461mAh/g.At initial charge curve the irreversible capacity is probably associated to a combination of processes,which may include the reduction of small amount of tin dioxide and cobalt oxide on electrode surface,solvent decomposition and the formation of a passivating film on the electrode surface.The porous Sn-Co alloy electrodes can partly accommodate the volume expansion and phase transition during cycling,and would improve the cycle life of the electrode.They are also beneficial to diffusion of Li into /out of macroporous materials,and improve dischargeability/chargeability at charge discharge cycle.

Keywords

Electroplating, Porous Sn-Co alloy, Lithium ion battery, Electrochemical performance

DOI Link

https://doi.org/10.61558/2993-074X.1719

Publication Date

2006-05-28

Online Available Date

2006-05-28

Revised Date

2006-05-28

Received Date

2006-05-28

Recommended Citation

Hong-hong JIANG, Ling HUANG. Structure and Properties of Electrodeposited Sn-Co Alloy Electrodes as Anode Material for Lithium-Ion Secondary Batteries[J]. Journal of Electrochemistry, 2006 , 12(2): 183-187.
DOI: 10.61558/2993-074X.1719
Available at: https://jelectrochem.xmu.edu.cn/journal/vol12/iss2/11