Hostname: page-component-6bf8c574d5-qdpjg Total loading time: 0 Render date: 2025-02-16T01:26:48.605Z Has data issue: false hasContentIssue false
  • English
  • Français

Defect Spinels in the System Li—Mn—O. Chemistry and Lithium Insertion

Published online by Cambridge University Press:  16 February 2011

F. Le Cras ,
D. Bloch ,
M. Anne  and
P. Strobel
F. Le Cras
Affiliation:
Lab. de Cristallographie, CNRS, BP 166, 38042 Grenoble Cedex 9, France Lab. d'Application de l'Electrochimie, CEA/CEREM, 38054 Grenoble Cedex 9, France
D. Bloch
Affiliation:
Lab. d'Application de l'Electrochimie, CEA/CEREM, 38054 Grenoble Cedex 9, France
M. Anne
Affiliation:
Lab. de Cristallographie, CNRS, BP 166, 38042 Grenoble Cedex 9, France
P. Strobel
Affiliation:
Lab. de Cristallographie, CNRS, BP 166, 38042 Grenoble Cedex 9, France
Get access

Abstract

Spinel phases Li-Mn-C with Li/Mn ratios between 0.35 and 0.8 were synthesized. The relationships between composition, manganese valence, vacancy fraction and electrochemical capacity are described using a new composition-valence phase diagram. Electrochemical performances in lithium batteries are compared. The best materials showed constant capacit> 140 Ah/kg in the range 3.5/2 V in liquid electrolyte batteries up to 20 cycles, without the usual capacity drop observed in stoichiometric LiMn204.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 369: Symposium U – Solid State Ionics IV , 1994 , 39
Copyright
Copyright © Materials Research Society 1995

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

1. Ohzuku, T., Kitagawa, M. and Hirai, T., J. Electrochem. Soc. 137, 769 (1990).Google Scholar
2. Tarascon, J.M., Wang, E., Shokoohi, F.K., McKinnon, W.R. and Colson, S., J. Electrochem. Soc. 138, 2859 (1991).Google Scholar
3. Tarascon, J.M. and Guyomard, D., J. Electrochem. Soc. 138, 2864 (1991);.Google Scholar
4. Thackeray, MM., Kock, A. de, Rossouw, M.H, Liles, D., Bittihn, R. and Hoge, D., J. Electrochem. Soc. 139, 363 (1992).Google Scholar
5. Rossouw, M.H., Kock, A. de, Piccioto, L.A de, Thackeray, MM., David, W.I.F. and Ibberson, R.M, Mater. Res. Bull. 25, 173 (1990).Google Scholar
6. Thackeray, M.M., Kock, A. de and David, W.I.F., Mater. Res. Bull. 28, 1041 (1993).Google Scholar
7. Kock, A. de, Rossouw, M.H, Piccioto, L.A de, Thackeray, MM., David, W.I.F. and Ibberson, R.M, Mater. Res. Bull. 25, 657 (1990).Google Scholar
8. Cras, F. Le, Bloch, D., Strobel, P., Anne, M., Soupart, J.B. and Rousche, J.C., to be published.Google Scholar
9. Gummow, R.J. and Thackeray, M.M., J. Electrochem. Soc. 141, 1178 (1994); Solid State Ionics 69, 59 (1994).Google Scholar
10. Strobel, P., Rohs, S., Cras, F. Le and Anne, M., to be published.Google Scholar
11. Mouget, C. and Chabre, Y., licensed from CNRS to Bio-Logic, Claix, France.Google Scholar
12. Bloch, D. et al. , to be patented.Google Scholar