Synthesis,Characteristics and Electrochemical Performance of Nano-sized SnCo/Graphite Composites as Anode for Lithium Ion Batteries

Authors

Jin-shu CAI, Department of Chemistry,College of Chemistry and Chemical Engneering,;
Ling HUANG, Department of Chemistry,College of Chemistry and Chemical Engneering,;
Fu-sheng Ke, Department of Chemistry,College of Chemistry and Chemical Engneering,;State Key Lab for Physical Chemistry of Solid Surface,Xiamen University,Xiamen 361005,Fujian,China;
Shi-gang SUN, Department of Chemistry,College of Chemistry and Chemical Engneering,;State Key Lab for Physical Chemistry of Solid Surface,Xiamen University,Xiamen 361005,Fujian,China;

Abstract

The nano-structural Sn-Co/graphite composites were prepared by chemical reduction of the alloy electroless deposition solution in graphite suspensions,and the composites were annealed at 500 ℃.The phase structure and surface morphology of the composites were measured by XRD、SEM and Raman.The results indicate that there were high dispersions and high loadings of Sn-Co nanoparticles on graphite by thermal treatment.Electrochemical lithium storage performance was studied preliminarily on the obtained samples.The graphite modified with the Sn-Co nanoparticles possessed a higher electrochemical reversible capacity than that of graphite during the charge and discharge process.The appetency between the Sn-Co nanoparticles and graphite can effectively reduce or prevent active element Sn from flaking off the graphite.Interspace between deposited Sn-Co particles /particles can accommodate the larger structure strain of active materials produced during Li-ion insertion and extrction,which may both improve the cycle performance of the electrode.

Keywords

laminar graphite, composites, electroless deposition, electrochemical performance

DOI Link

https://doi.org/10.61558/2993-074X.1959

Publication Date

2009-02-28

Online Available Date

2009-02-28

Revised Date

2009-02-28

Received Date

2009-02-28

Recommended Citation

Jin-shu CAI, Ling HUANG, Fu-sheng Ke, Shi-gang SUN. Synthesis,Characteristics and Electrochemical Performance of Nano-sized SnCo/Graphite Composites as Anode for Lithium Ion Batteries[J]. Journal of Electrochemistry, 2009 , 15(1): 79-82.
DOI: 10.61558/2993-074X.1959
Available at: https://jelectrochem.xmu.edu.cn/journal/vol15/iss1/18

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