Chitra, S. and Kalyani, P. and Mohan, T. and Gangadharan, R. (1999) Physical Properties and Electrochemical Features of Lithium Nickel-Cobalt Oxide Cathode Materials Prepared at Moderate Temperature. Journal of Electroceramics, 3:4. pp. 425-432.

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Abstract

In this paper, we report the synthesis, the physical properties and the electrochemical features of the lithium nickel-cobalt oxide cathode materials prepared by a combustion method at moderate temperature. Structural properties were investigated by X-ray diffraction, Raman scattering and FTIR. Spectroscopic measurements show unambiguously that the ®nal product is identi®ed as a modi®ed-spinel structure (Fd3m space group) with the stoichiometric formula Li2 Ni0:5Co0:5 2O4. Electrochemical cells Li//Li2 Ni0:5Co0:5 2O4 were fabricated using an organic electrolyte and their performances were tested. For a modi®ed-spinel Li2 Ni0:5Co0:5 2O4 structure the chemical diffusion coef®cient of Li ions is around 10 ÿ10 cm2s, which is lower than for a layered LiNi0:5Co0:5O2 host matrix.

Item Type:	Article
Uncontrolled Keywords:	Li-Ni-Co oxides; Raman; FTIR; electrochemical properties; lithium batteries
Subjects:	Electrochemical Power Sources
Divisions:	UNSPECIFIED
Depositing User:	ttbdar CECRI
Date Deposited:	08 May 2012 06:42
Last Modified:	08 May 2012 06:42
URI:	http://cecri.csircentral.net/id/eprint/1295

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