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Preparation and Characterization of Tin/Carbon Composites for Lithium-Ion Cells

Published online by Cambridge University Press:  01 February 2011

Ronald A. Guidotti ,
David J. Irvin ,
William R. Even Jr  and
Karl Gross
Ronald A. Guidotti
Affiliation:
Sandia National Laboratories, P.O. Box 5800, Albuquerque, NM 87185-0614
David J. Irvin
Affiliation:
Naval Air Warfare Center, Polymer Science and Engineering Branch, China Lake, CA 93555
William R. Even Jr
Affiliation:
Sandia National Laboratories, P.O. Box 969, Livermore, CA 94551
Karl Gross
Affiliation:
Sandia National Laboratories, P.O. Box 969, Livermore, CA 94551
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Abstract

A number of Sn/C composites were prepared for evaluation as anode materials for Li-ion cells. In one case, samples were prepared by incorporation of Sn species into organic precursors that were then pyrolyzed under an Ar/H2 cover gas to prepare the Sn/C composites. They were also prepared by decoration of various types of carbon with nanoparticles of Sn by electroless deposition using hydrazine. The carbons examined included a disordered carbon prepared in house from poly(methacrylonitrile), a mesocarbon microbead (MCMB) carbon, and a platelet graphite. The Sn/C composites were examined by x-ray diffraction (XRD) and scanning electron microscopy (SEM) and were also analyzed for Sn content. They were then tested as anodes in three-electrode cells against Li metal using 1M LiPF6 in ethylene carbonate (EC)/dimethyl carbonate (DMC) solution. The best overall electrochemical performance was obtained with a Sn/C composite made by electroless deposition of 10% Sn onto platelet graphite.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 730: Symposium V – Materials for Energy Storage, Generation, and Transport , 2002 , V1.11
Copyright
Copyright © Materials Research Society 2002

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References

1. Veeraraghavan, B., Durairajan, A., White, R.E., Popov, B. N., and Guidotti, Ronald, “Synthesis and Characterization of Sn-Coated SFG10 Graphites as Negative Electrodes in Li-Ion Cells,” 198th Meeting of The Electrochemical Society, Phoenix, AZ, October 22-27, 2000.Google Scholar
2. Irvin, D. J., Even, W. R., Gross, K., and Guidotti, R. A., “Tin/Carbon Composites: Crystalline Sphere to Amorphous Powders,” SAND2001-8397 (August 2001).Google Scholar
3. Even, W. R. and Gregory, D. P., MRS Bull., 19(4), 29 (1994).Google Scholar