Nano Archive

Synthesis and characterization of Li4SiO4 nano-powders by a water-based sol-gel process

Wu, XW and Wen, ZY and Xu, XG and Wang, XY and Lin, J (2009) Synthesis and characterization of Li4SiO4 nano-powders by a water-based sol-gel process. JOURNAL OF NUCLEAR MATERIALS, 392 (3). pp. 471-475. ISSN 0022-3115

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Abstract

The water-based sol-gel process for the synthesis of Li4SiO4 nano-powders was reported for the first time. LiOH center dot H2O and aerosil SiO2 were used as the starting materials with citric acid (C6H8O7 center dot H2O) as the chelating agent. Li4SiO4 powders with particle size as small as 100 nm were successfully synthesized at the temperature as low as 675 degrees C. Phase analysis, morphology, sintering behavior of the powders and ionic conductivity of the sintered bodies were investigated systematically. The experimental results showed that the powders obtained by the water-based sol-gel process (SG) possessed excellent sinterability, exhibiting a linear shrinkage of 5.2% while sintered to 900 degrees C, more than 3 times that of the powders obtained by solid state reaction (SSR). The bulk conductivity of the SG sintered bodies was much higher than that of the SSR samples at the same testing temperature.

Item Type:Article
Subjects:Material Science > Nanochemistry
ID Code:7793
Deposited By:CSMNT
Deposited On:27 Nov 2009 08:25
Last Modified:27 Nov 2009 08:25

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