Solvothermal Synthesis of Electrochemically Active Nanocrystalline Li-Ti-O Spinel

Abstract

Nanocrystalline Li-Ti-O spinel samples were prepared by solvothermal reaction of TiO2 with lithium hydroxide in water and ethanol. The hydrothermal reaction proceeds at temperature higher than 130 °C. The reaction proceeds via dissolution-precipitation mechanism and its course is not sensitive to titanium dioxide polymorph used in the reaction. Product of the reaction in water has cubic rock salt type structure. It converts, however, to spinel if annealed to temperatures exceeding 250 °C. The re-crystallization is accompanied with water removal from the structure. Solvothermal reaction in ethanol leads directly to a product with spinel structure without need for annealing. Both products are active for Li insertion; theelectrochemical activity. The specific capacity ranges between 100 and 160 mAh/g depending on the annealing temperature.

This is a preview of subscription content, access via your institution.

References

  1. (1)

    C. Martin, D. Mitchell in Electroanalytical Chemistry (I. Rubinstein and A.J. Bard Eds.), 21 M. Dekker, New York, 1999, p. 1.

    CAS  Google Scholar 

  2. (2)

    P. Krtil, D. Fattakhova, L. Kavan, S. Burnside, M. Grätzel, Solid State Ionics, 135, 101, 2000.

    CAS  Article  Google Scholar 

  3. (3)

    Lucka, M.M., Anderko, A.; Riman, R.E. J. Amer. Ceram. Soc. 1995, 78, 2609.

    Article  Google Scholar 

  4. (4)

    Oledzka, O.; Brese, N.E.; Riman, R.E. Chem. Mater. 1999, 11, 1931.

    Google Scholar 

  5. (5)

    Burnside, S.D.; Shklover, V.; Barbé, C.; Comte, P.; Arendse, F.; Brooks, K.; Grätzel, M. Chem. Mater 1998, 10, 2419

    CAS  Article  Google Scholar 

  6. (6)

    Krumm, S.; Acta Universitatis Carolinae Geologica, 1994, 38, 253.

    CAS  Google Scholar 

Download references

Author information

Affiliations

Authors

Corresponding author

Correspondence to Dina Fattakhova.

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Fattakhova, D., Krtil, P. Solvothermal Synthesis of Electrochemically Active Nanocrystalline Li-Ti-O Spinel. MRS Online Proceedings Library 703, 326 (2001). https://doi.org/10.1557/PROC-703-V3.26

Download citation