The influence of TiO2 polymorph, mechanical milling and subsequent sintering on the formation of Ti-substituted spinel-related Li 0.5Fe2.5O4

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Abstract

Single-phased spinel-related titanium-substituted Li0.5Fe 2.5O4 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 Li 0.5Fe2.5O4 was not achieved even after sintering the mixture at 1,000 °C (12 h).

Original languageEnglish
Pages (from-to)6333-6338
Number of pages6
JournalJournal of Materials Science
Volume41
Issue number19
DOIs
Publication statusPublished - Oct 2006

Fingerprint

Polymorphism
spinel
sintering
Sintering
titanium
Titanium oxides
Titanium
rutile
Lithium Carbonate
oxides
Corundum
Aluminum Oxide
Iron oxides
Titanium dioxide
Carbonates
Lithium
anatase
carbonates
Temperature
aluminum oxides

ASJC Scopus subject areas

  • Materials Science(all)
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

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abstract = "Single-phased spinel-related titanium-substituted Li0.5Fe 2.5O4 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 Li 0.5Fe2.5O4 was not achieved even after sintering the mixture at 1,000 °C (12 h).",
author = "Widatallah, {H. M.} and Ren, {X. L.} and Al-Omari, {I. A.}",
year = "2006",
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T1 - The influence of TiO2 polymorph, mechanical milling and subsequent sintering on the formation of Ti-substituted spinel-related Li 0.5Fe2.5O4

AU - Widatallah, H. M.

AU - Ren, X. L.

AU - Al-Omari, I. A.

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AB - Single-phased spinel-related titanium-substituted Li0.5Fe 2.5O4 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 Li 0.5Fe2.5O4 was not achieved even after sintering the mixture at 1,000 °C (12 h).

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