Raja, M W and Mahanty, Sourindra and Kundu, M and Basu, Rajendra Nath (2009) Synthesis of nanocrystalline Li(4)Ti(5)O(12) by a novel aqueous combustion technique. Journal of Alloys and Compounds, 468 (1-2). pp. 258-262. ISSN 0925-8388

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Abstract

Lithium titanate (Li(4)Ti(5)O(12)) powder has been synthesized by a novel aqueous combustion process using a common amino acid alanine, as fuel. Thermogravimetric analysis of the gel indicates sharp single step combustion at similar to 200 degrees C where nearly 80% weight loss occurs. X-ray analysis shows that the as-synthesized powder contains mostly spinel Li(4)Ti(5)O(12) phase along with anatase TiO(2). About 90% phase purity is obtained when calcined at 800 degrees C in air. Observation Under a Field Emission Scanning Electron Microscope reveals spherical shaped particles with uniform morphology. The particle size as estimated from the micrograph is in the range 40-80 nm. Fourier transformed infrared spectroscopy shows the characteristics bands of Li(4)Ti(5)O(12) at 652 and 462cm(-1) even in the as-synthesized powder. A wide optical band gap of 1.80eV has been determined from UV-vis spectroscopy. (C) 2007 Elsevier B.V. All rights reserved.

Item Type:	Article
Uncontrolled Keywords:	Electrode materials; Nanostructured materials; Chemical synthesis; Optical properties
Subjects:	Electronics
Divisions:	Fuel Cell and Battery
Depositing User:	Bidhan Chaudhuri
Date Deposited:	01 Mar 2012 07:53
Last Modified:	01 Mar 2012 07:53
URI:	http://cgcri.csircentral.net/id/eprint/1084

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