The influence of TiO2 polymorph, mechanical milling and subsequent sintering on the formation of Ti-substituted spinel-related Li0.5Fe2.5O4

Widatallah, H.M.; Ren, X.-L. and Al-Omari, I.A. (2006). The influence of TiO2 polymorph, mechanical milling and subsequent sintering on the formation of Ti-substituted spinel-related Li0.5Fe2.5O4. Journal of Materials Science, 41(19) pp. 6333–6338.

DOI: https://doi.org/10.1007/s10853-006-0721-4

Abstract

Single-phased spinel-related titanium-substituted Li0.5Fe2.5O4 has been synthesized by sintering in air a mechanically pre-milled mixture of lithium carbonate, corundum-related iron (III) oxide and the rutile polymorph of titanium (IV) oxide at 700 °C (12 h). This temperature is ca. 450–500 °C less than the temperatures at which the material is normally prepared by conventional ceramic techniques. On replacing the rutile polymorph of titanium (IV) oxide in the pre-milled mixture by the anatase form the formation of single-phased titanium-substituted Li0.5Fe2.5O4 was not achieved even after sintering the mixture at 1,000 °C (12 h).

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