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Raman characterization of Li(Al1-xCox)O2

Published online by Cambridge University Press:  31 January 2011

G. Chen ,
W. Hao ,
Y. Shi ,
Y. Wu  and
S. Perkowitz
G. Chen
Affiliation:
Department of Materials Science and Institute of Materials Science, Jilin University, Changchun 130023, People's Republic of China, and Physics Department, Emory University, Atlanta, Georgia 30322
W. Hao
Affiliation:
Department of Materials Science and Institute of Materials Science, Jilin University, Changchun 130023, People's Republic of China
Y. Shi
Affiliation:
Department of Materials Science and Institute of Materials Science, Jilin University, Changchun 130023, People's Republic of China
Y. Wu
Affiliation:
Key Laboratory for Supermolecular Structure and Spectroscopy, Jilin University, Changchun 130023, People's Republic of China
S. Perkowitz
Affiliation:
Physics Department, Emory University, Atlanta, Georgia 30322
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Abstract

For the first time, we measured Raman spectra from Li(Al1-xCox)O2 (x = 0.5 to 0.9), a new cathode material for lithium batteries. Whereas LiCoO2 sintered at 400 °C develops a spinel structure, Li(Al1-xCox)O2 sintered at 380 °C is amorphous, as shown by its single broad Raman band. Li(Al1-xCox)O2 sintered at 700 or 900 °C shows Raman peaks independent of x that coincide with those from LiCoO2, indicating that Li(Al1-xCox)O2 has the α–NaFeO2 structure (space group R3m). Traces of the impurity phase Co3O4 appear in samples treated at 900 °C but not at 700 °C. The Raman peak widths exceed those in LiCoO2, suggesting that replacement of Co by Al increases disorder among the Li ions.

Type
Articles
Information
Journal of Materials Research , Volume 15 , Issue 3 , March 2000 , pp. 583 - 585
Copyright
Copyright © Materials Research Society 2000

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References

REFERENCES

1.Ceder, G., Chiang, Y.M., Sadoway, D.R., Aydinol, M.K., Jang, Y-I., and Huang, B., Nature 392, 694 (1998).CrossRefGoogle Scholar
2.Huang, W. and Frech, R., Solid State Ionics 86–88, 395 (1996).CrossRefGoogle Scholar
3.Rossen, E., Reimers, J.N., and Dahn, J.R., Solid State Ionics 62, 53 (1993), and discussion in Ref. 2.CrossRefGoogle Scholar
4.Inaba, M., Iriyama, Y., Ogumi, Z., Todzuka, Y., and Tasaka, A., J. Raman Spectrosc. 28, 613 (1997).3.0.CO;2-T>CrossRefGoogle Scholar
5. ASTM Card No. 16–427, and reference there.Google Scholar
6.Ferraro, J.R. and Nakamoto, K., Introductory Raman Spectroscopy, (Academic Press, Boston, MA 1994), Chap. 1.Google Scholar
7.Hadjiev, V.G., Iliev, M.N., and Vergilov, I.V., J. Phys. C: Solid State Phys. 21, L199 (1988).CrossRefGoogle Scholar
8.Jang, Y., Huang, B., Wang, H., Sadoway, D.R., Ceder, G., Chiang, Y-M., Liu, H., and Tamura, H., J. Electrochem. Soc. 146, 862 (1999).CrossRefGoogle Scholar
9.Inaba, M., Todsuka, Y., Yoshida, H., Grincourt, Y., Tasaka, A., Tomida, Y., and Ogumi, Z., Chem. Lett. 889 (1995).Google Scholar