Synthesis of nanocrystalline Li4Ti5O12 by a novel aqueous combustion technique

被引：66

作者：

Raja, M. W. ^{[1
]}

Mahanty, S. ^{[1
]}

Kundu, M. ^{[1
]}

Basu, R. N. ^{[1
]}

机构：

[1] Cent Glass & Ceram Res Inst, Fuel Cell & Battery Div, Kolkata 700032, India

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2009年 / 468卷 / 1-2期

关键词：

Electrode materials; Nanostructured materials; Chemical synthesis; Optical properties; ALL-SOLID-STATE; LITHIUM-ION; ELECTROCHEMICAL PROPERTIES; ANODE MATERIAL; TIO2; ANATASE; SPINEL; INSERTION; LI1.33TI1.67O4; ELECTRODES; LIMN2O4;

D O I：

10.1016/j.jallcom.2007.12.072

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Lithium titanate (Li4Ti5O12) 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 Li4Ti5O12 phase along with anatase TiO2. 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 Li4Ti5O12 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.

引用

页码：258 / 262

页数：5

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