Das, S S and Srivastava, P K and Singh, N B (2012) Fast ion conducting phosphate glasses and glass ceramic composites: Promising materials for solid state batteries. Journal of Non-Crystalline Solids, 358 (21). pp. 2841-2846. ISSN 0022-3093

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Abstract

Fast ion conducting (FIG) phosphate glasses and glass ceramic composites have gained considerable importance due to their potential applications in the fabrication of solid-state batteries and other electrochemical devices. We, therefore, present an overview on various types of FIC glasses and glass ceramic composites. Silver phosphate glasses doped with different weight percent of lithium chloride (1, 5, 10 and 15 wt.%) were synthesized by melt quenching technique. The Ag2O-P2O5-(15 wt.%) LiCl glass exhibited the maximum electrical conductivity (sigma = 8.91 x 10(-5) Scm(-1) at room temperature and 4.16 x 10(-3) Scm(-1) at 200 degrees C). Using this glass as an amorphous host material, glass-ceramic composites of Ag2O-P2O5-(15 wt.%) LiCl:xAl(2)O(3) (x = 5-50 wt.%) were prepared. The ionic transference number, electrical conductivity, ionic mobility and carrier ion concentration of the synthesized samples were measured. Ag2O-P2O5-(15 wt.%) LiCl:(25 wt.%) Al2O3 composite system exhibited the maximum sigma value (sigma = 3.32 x 10(-4) Scm(-1) at room temperature and 2.88 x 10(-2) Scm(-1) at 200 degrees C). Solid-state batteries using undoped Ag2O-P2O5 glass, Ag2O-P2O5-(15 wt.%) LiCl glass and glass ceramic composite containing 25 wt.% Al2O3 as electrolytes were fabricated. The open circuit voltage (OCV) values and discharge time of these cells were measured and compared. It is found that the glass ceramic composites show enhanced ionic conduction, better OCV value and discharge characteristics. (C) 2012 Published by Elsevier B.V.

Item Type:	Article
Uncontrolled Keywords:	Silver ion conduction; Phosphate glass; Ion conducting glasses; Electrical conductivity; Lithium phosphate glass
Subjects:	Glass Electronics
Divisions:	Fuel Cell and Battery
Depositing User:	Bidhan Chaudhuri
Date Deposited:	16 Jan 2013 07:34
Last Modified:	16 Jan 2013 07:34
URI:	http://cgcri.csircentral.net/id/eprint/1846

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