Solid state synthesis of extra phase-pure Li4Ti5O12 spinel-Reference-Cited by-同舟云学术

Solid state synthesis of extra phase-pure Li4Ti5O12 spinel

Published:2011 Issue:3 Volume:43 Page:343-351
ISSN:0350-820X
Container-title:Science of Sintering
language:en
Short-container-title:SCI SINTER

Author:

Veljkovic I.¹,Poleti D.²,Karanovic Lj.³,Zdujic M.⁴,Brankovic G.⁵

Affiliation:

1. Innovation Center, Faculty of Technology & Metallurgy, Belgrade

2. Department of General and Inorganic Chemistry, Faculty of Technology and Metallurgy, Belgrade

3. Laboratory of Crystallography, Faculty of Mining and Geology, Belgrade

4. Institute of Technical Sciences of the Serbian Academy of Sciences and Arts, Belgrade

5. Institute for Multidisciplinary Studies, Belgrade

Abstract

Extra phase-pure Li4Ti5O12 spinel with particle sizes less than 500 nm was synthesized by solid state reaction of mechanochemicaly activated mixture of nano anatase and Li2CO3 for a very short annealing time, 4 h at 800?C. Structural and microstructural properties, the mechanism of solid state reaction between anatase and Li2CO3 as well as thermal stability of prepared spinel were investigated using XRPD, SEM and TG/DSC analysis. The mechanism of reaction implies decomposition of Li2CO3 below 250?C, formation of monoclinic Li2TiO3 as intermediate product between 400 and 600?C and its transformation to Li4Ti5O12 between 600-800?C. The spinel structure is stable up to 1000?C when it is decomposed due to Li2O evaporation.

Publisher

National Library of Serbia

Subject

Materials Chemistry,Metals and Alloys,Condensed Matter Physics,Ceramics and Composites

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