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DOI: 10.1039/A804851G (Paper) Reference Section for: J. Mater. Chem., 1999, 9, 427-429

Neutron diffraction study of stoichiometric spinel Li1+xMn2–xO4 showing octahedral 16c-site Li-occupation

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Helena Berg, Erik M. Kelder and John O. Thomas

Abstract

Stoichiometric Li1+xMn2–xO4 has been synthesised from LiOH·H2O and manganese(III) acetate. The structure of the compound so formed (Li1+xMn2–xO4, x=0.14) has been refined from neutron powder diffraction data. The sample contained an impurity phase of ca. 5 wt% Li2MnO3. Under these conditions, two-phase Rietveld refinement showed lithium ions to occupy both tetrahedral 8a-sites (100% occupancy) and octahedral 16c-sites (7.0% occupancy); this 16c-site occupation has not been observed previously. Manganese ions occupy octahedral 16d-sites (93.0% occupancy).

References

  1. M. M. Thackeray, A. de Kock, M. H. Rossouw, D. Liles, R. Bittihn and D. Hoge, J. Electrochem. Soc., 1992, 139, 363 CAS.
  2. B. Zachau-Christiansen, K. West, T. Jacobsen and S. Atlung, Solid State Ionics, 1990, 40/41, 580 CrossRef.
  3. M. M. Thackeray, W. I. F. David, P. G. Bruce and J. B. Goodenough, Mater. Res. Bull., 1983, 18, 461 CrossRef CAS.
  4. T. Ohzuku, M. Kitagawa and T. Hirai, J. Electrochem. Soc., 1990, 137, 769 CAS.
  5. G. Pistoia, D. Zane and Y. Zhang, J. Electrochem. Soc., 1995, 142, 2551 CAS.
  6. J. M. Tarascon, W. R. McKinnon, F. Coowar, T. N. Bowmer, G. Amatucci and D. Guyomard, J. Electrochem. Soc., 1994, 141, 1421 CAS.
  7. J. C. Hunter, J. Solid State Chem., 1981, 39, 142 CrossRef CAS.
  8. Y. Gao, M. N. Richard and J. R. Dahn, J. Appl. Phys., 1996, 80, 4141 CrossRef CAS.
  9. I. Chen, X. Huang, E. Kelder and J. Schoonman, Solid State Ionics, 1995, 76, 91 CrossRef.
  10. H. M. Rietveld, J. Appl. Crystallogr., 1969, 2, 7 CrossRef.
  11. J. Rodriguez-Carvajal, ILL Internal Report, FULLPROF computer program Search PubMed.
  12. P. Strobel and B. Lambert-Andron, J. Solid State Chem., 1988, 75, 90 CrossRef CAS.
  13. R. J. Gummow, A. de Kock and M. M. Thackeray, Solid State Ionics, 1994, 69, 59 CrossRef CAS.
  14. Y. Gao and J. R. Dahn, J. Electrochem. Soc., 1996, 143, 100 CAS.
  15. P. Endres, B. Fuchs, S. Kemmler-Sack, K. Brandt, G. Faust-Becker and H. W. Praas, Solid State Ionics, 1996, 89, 221 CrossRef CAS.
  16. B. Ammundsen, D. J. Jones, J. Rozière, H. Berg, R. Tellgren and J. O. Thomas, Chem. Mater., 1998, 10, 1680 CrossRef CAS.
  17. T. Takada, H. Hayakawa, E. Akiba, F. Izumi and B. C. Chakoumakos, J. Solid State Chem., 1997, 130, 74 CrossRef CAS.
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