Sivashanmugam, A. and Thirunakaran, R. and Zou, M. and Yoshio, M. and Yamaki, J.I. and Gopukumar, S. (2006) Glycine-Assisted Sol-Gel Combustion Synthesis and Characterization of Aluminum-Doped LiNiVO4 for Use in Lithium-Ion Batteries. Journal of the Electrochemical Society, 153 (3). A497-A503. ISSN 0013-4651

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Abstract

Phase-pure inverse spinel LiNiVO4 and LiAlxNi1−xVO4 have been synthesized with good surface morphology by a sol-gel method using glycine as a chelating agent. The product was characterized by thermogravimetric and differential thermal analysis, X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, and galvanostatic cycling studies. Surface morphology examinations of the undoped LiNiVO4 particles showed micrometer-sized, cube-shaped grains, while that of aluminum-doped particles showed uniform spherical particles. As compared to the solid-state synthesis route, the sol-gel combustion process greatly reduces the temperature �250°C� for preparing LiNiVO4 and LiAlxNi1−xVO4. Subsequent calcination between 650 and 850°C significantly enhances the crystallinity of the synthesized LiNiVO4 and LiAlxNi1−xVO4 powder. The discharge capacity and cycling performance of the LiAl0.1Ni0.99VO4 was found to be superior at a calcination temperature of 250°C.

Item Type:	Article
Subjects:	Lithium batteries Electrochemical Power Sources
Divisions:	UNSPECIFIED
Depositing User:	ttbdu cecri
Date Deposited:	25 Jan 2012 12:27
Last Modified:	25 Jan 2012 12:27
URI:	http://cecri.csircentral.net/id/eprint/738

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