Hostname: page-component-586b7cd67f-2brh9 Total loading time: 0 Render date: 2024-11-29T07:41:40.517Z Has data issue: false hasContentIssue false
  • English
  • Français

Preparation and Properties of Li-Mn-O-F Compounds as Cathode in Li-Ion Batteries

Published online by Cambridge University Press:  11 February 2011

Hanxing Liu ,
Chen Hu ,
Junlei Xia ,
Shixi Zhao  and
Shixi Ouyang
Hanxing Liu
Affiliation:
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, P.R. China
Chen Hu
Affiliation:
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, P.R. China
Junlei Xia
Affiliation:
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, P.R. China
Shixi Zhao
Affiliation:
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, P.R. China
Shixi Ouyang
Affiliation:
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, P.R. China
Get access

Abstract

In present study LiMn2O4-xFx were prepared by the sol-gel method. X-ray diffraction (XRD) and scanning electron microscope (SEM ) were employed to detect the microstructure of the reaction products. It were found perfect crystal particles were obtained, and its' size were uniform in 1∼2 μ m. The specific capacity and cycleability were measured basing on battery program control test system. The results shown the substitution of F for O increased the specific capacity of the material at the cost of the cycleability due to more Mn3+ and less Mn4+ existed in the material. The exist of Mn3+ would reduce cycleability of cathode material due to the Jahn-Teller effect which were caused by the deformation of the crystal structure.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 755: Symposium DD – Solid-State Chemistry of Inorganic Materials IV , 2002 , DD6.25
Copyright
Copyright © Materials Research Society 2003

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Amatucci, G‥ G. and Pereira, N., J. Power sources 39, 39(1999).Google Scholar
2. Guyomard, D. and Tarascon, J. M., Solid State Ionics 69, 222(1994).Google Scholar
3. Liu, H.X., Zhou, Z.P., Zhao, S.X. and Ouyang, S.X., Acta Phys. Chim. Sinica 17, 702(2001).Google Scholar
4. Amine, K., Tukamoto, H., Yasuda, H. and Fujita, Y., J. Electrochem. Soc. 143, 1607(1996).Google Scholar
5. Zhao, S.X., Xia, J.L., Zhang, R.G. and Liu, H.X., J. Wuhan Univ. of Tech. 23, 33(2001).Google Scholar
6. Xia, Y., Zhou, Y. and Yoshio, M., J. Electrochem. Soc. 144, 2593(1997).Google Scholar
7. Amarilla, J.M. and Martin, J.L., Solid State Ionics 127, 73(2000)Google Scholar
8. Sun, Y. K., Electrochemistry Communications 3, 199(2001).Google Scholar
9. Armstrong, A. R. and Bruce, P. G., Nature 381, 499(1996).Google Scholar
10. Zhang, R.G., Zhao, S.X., Zhou, Z.P. and Liu, H.X., Functional Materials 33, 125(2002).Google Scholar
11. Liu, Y. and Fjujiwara, T., Electrochimica Acta 46, 1151(2001).Google Scholar
12. Ceder, G‥ and Chiang, Y.M., Nature 392, 694(1998).Google Scholar