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Preparation and Electrochemical Characterization of LiCoO2 Single Crystal Particles prepared by Super Critical Water Synthesis (SCWS)

Published online by Cambridge University Press:  10 February 2011

Kiyoshi Kanamura ,
Takao Umegaki ,
Katsunori Toyoshima ,
Ken-ichi Okada ,
Yukiya Hakuta ,
Masafumi Adschiri  and
Kunio Arai
Kiyoshi Kanamura
Affiliation:
Department of Applied Chemistry, Graduate School of Engineering, Tokyo Metropolitan University, 1-1 Minami-Ohsawa, Hachioji, 192-0397 Tokyo, Japan, kanamura-kiyoshi@c.metrou.ac.jp
Takao Umegaki
Affiliation:
Department of Applied Chemistry, Graduate School of Engineering, Tokyo Metropolitan University, 1-1 Minami-Ohsawa, Hachioji, 192-0397 Tokyo, Japan, kanamura-kiyoshi@c.metrou.ac.jp
Katsunori Toyoshima
Affiliation:
Department of Chemical Engineering, Graduate School of Engineering, Tohoku University, Aoba Aramaki, 980-8579 Sendai, Japan
Ken-ichi Okada
Affiliation:
Department of Chemical Engineering, Graduate School of Engineering, Tohoku University, Aoba Aramaki, 980-8579 Sendai, Japan
Yukiya Hakuta
Affiliation:
Department of Chemical Engineering, Graduate School of Engineering, Tohoku University, Aoba Aramaki, 980-8579 Sendai, Japan
Masafumi Adschiri
Affiliation:
Department of Chemical Engineering, Graduate School of Engineering, Tohoku University, Aoba Aramaki, 980-8579 Sendai, Japan
Kunio Arai
Affiliation:
Department of Chemical Engineering, Graduate School of Engineering, Tohoku University, Aoba Aramaki, 980-8579 Sendai, Japan
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Abstract

LiCoO2 single crystal particles were obtained by super critical water synthesis (SCWS) under optimized preparation conditions. The particle size of the LiCoO2 was less than 1 μm, which was much smaller than that of LiCoO2 prepared by a standard method. However, some unknown crystalline and amorphous phases coexisted with the well defined LiCoO2 single crystal particles. The discharge and charge characteristics of the LiCoO2 prepared by the SCWS were examined by some electrochemical methods. In the first cycle, an irreversible behavior was observed, and then the gradual decrease of the discharge capacity with discharge and charge cycle was also detected. The stable discharge capacity was estimated to be 80 mA h g−1 after the 100th cycle. This result may be due to the existence of amorphous phases and some structural defects.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 575: Symposium CC – New Materials for Batteries & Fuel Cells , 1999 , 59
Copyright
Copyright © Materials Research Society 2000

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References

REFERENCES

1. Mizushima, K., Jones, P. C., Wiseman, P. J., and Goodenough, J. B., Mater. Res. Bull. 15, 783(1980).Google Scholar
2. Thomas, M. G. S. R., David, W. I. F., Goodenough, J. B., and Groves, P., Mater. Res. Bull. 20,1137 (1985).Google Scholar
3. Thackeray, M. M., David, W. I. F., Bruce, P. G., and Goodenough, J. B., Mater. Res. Bull. 18, 461(1983).Google Scholar
4. Koshiba, N., Takada, K., Nakanishi, M., Asaka, E., and Takehara, Z., DENKIKAGAKU 62, 870(1994).Google Scholar
5. Amatucci, G. G., Trascon, J. M, Larcher, D., and Klein, L. C., Solid State Ionics 84, 169(1996).Google Scholar
6. Hakuta, Y, Onai, S, Adschiri, T., and Arai, K., Proc. Int. Sympo. Supercritical Fluids, A, 255–258 (1997).Google Scholar
7. Antolini, E., and Ferretti, M., J. Solid State Chem. 117,1 (1995).Google Scholar
8. Gummow, R. J., Thackeray, M. M., David, W. I. F., and Hull, S., Mater. Res. Bull. 27, 327(1992).Google Scholar
9. Garcia, B., Barboux, P., Ribot, F., Kahn-Harari, A., Mazerolles, L., and Baffler, N., Solid State Ionics 80 111(1995).Google Scholar
10. Ohzuku, T., Ueda, A., and Nagayama, M., J. Electrochem. Soc. 140, 1862(1993).Google Scholar
11. Li, W., Reimers, J. N., and Dahn, J. R., Solid State Ionics 67,123 (1993).Google Scholar
12. Amatucci, G. C., Tarascon, J. M., and Klein, L. C., J. Electrochem. Soc. 143, 1114(1996).Google Scholar