Skip to main content Accessibility help
×
Home

Cation Ordering in Substituted LiMn2O4 Spinels

  • P. Strobel (a1), A. Ibarra-Palos (a1) and C. Poinsignon (a2)

Abstract

In order to overcome the capacity fading of LiMn2O4 in lithium batteries, various substitutions for Mn have been proposed. The structural implications of substitution in LiMn2-xMxO4 with x = 0.5, i.e. with exactly 1/4 octahedral (16d-site) cations replaced, are investigated here. For this stoichiometry, cationic ordering was known previously for M = Mg and Zn, resulting in a superstructure with primitive cubic symmetry. Given the poor chemical contrast of X-ray diffraction between Mn and Co, Ni or Cu, LiMn1.5M0.5O4 samples were studied by neutron diffraction and IR spectroscopy. Both techniques show the occurence of cationic ordering for M = Ni and Cu, but not for Co or Ga. In the case of M = Zn, further complication due Li/Zn ordering on the tetrahedral (8a) site is well resolved by FTIR. This investigation shows that the main driving force for octahedral cation ordering is the charge difference between Mn and M atoms.

Copyright

References

Hide All
1. Thackeray, M. M., J. Ceram. Soc. Amer. 82, 3347 (1999).
2. Broussely, M., Biensan, P., Simon, B., Electrochim. Acta 45, 3 (1999).
3. Tarascon, J. M., Wang, E., Shokoohi, F.K., McKinnon, W.R., Colson, S., J. Electrochem Soc. 138, 2859(1991).
4. Kawai, H., Nagata, M., Tukamoto, H., West, A.R., J. Power Sources 81–82 67 (1999).
5. Blasse, G., Philips Res. Rept. 1 (1964); JCPDS card 32573.
6. Braithwaite, J.S., Catlow, C.R.A., Harding, J.H. and Gale, J.D., Phys. Chem. Chem. Phys. 2 38 (2000).
7. Le Cras, F., Bloch, D., Anne, M. and Strobel, P., Solid State Ionics 89 203 (1996).
8. Strobel, P., Ibarra Palos, A., Le Cras, F., Anne, M., J. Mater. Chem. 10 429 (2000).
9. Joubert, J.C. and Durif, A., C.R. Acad. Sci. Paris 258 4482 (1964); JCPDS card 74–1260.
10. Sears, V.F., AECL Report 8490 (1984).
11. Strobel, P., Poinsignon, C., Ibarra Palos, A. and Anne, M., J. Solid State Chem. (submitted).
12. White, W.B. and DeAngelis, B.A., Spectrochim. Acta 23A 985 (1967).
13. Preudhomme, J., Ann. Chim. (France) 9 31 (1974).
14. Richardson, T.J., Wen, S.J., Striebel, K.A., Ross, P.N. and Cairns, E.J., Mater. Res. Bull. 32 609 (1997).
15. Julien, C., Massot, M., Haro-Poniatowski, E., Nazri, GA., Rougier, A., MRS Proc. 496 415 (1998).
16. Ammundsen, B., Burns, G.R., Islam, M.S., Kanoh, H. and RoziDre, J., J. Phys. Chem. B 103 5175(1999).
17. Allen, G.C. and Paul, M., Appl. Spectrosc. 49 451 (1995).
18. Brabers, V.AM., Phys. Stat. Sol. A 12 629 (1972).
19. Laarj, M., Kacim, S. and Gillot, B., J. Solid State Chem. 125 67 (1996).

Cation Ordering in Substituted LiMn2O4 Spinels

  • P. Strobel (a1), A. Ibarra-Palos (a1) and C. Poinsignon (a2)

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed