Kundu, M and Mahanty, S and Basu, Rajendra Nath (2011) Improved electrochemical performance of natural honeycomb templated LiSbO(3) as an anode in lithium-ion battery. Materials Chemistry and Physics, 130 (1-2). pp. 20-23. ISSN 0254-0584

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Abstract

LiSbO(3) has been synthesized by wet-chemical route using natural honeycomb as template, followed by thermal treatment at 850 degrees C. X-ray powder diffraction (XRD) confirms a single phase material having an orthorhombic crystal structure with lattice parameters of a = 4.912 angstrom, b = 8.679 angstrom and c = 5.089 angstrom. Field emission scanning electron microscopy (FESEM) revealed that while conventional LiSbO(3) synthesized without using any template (C-LiSbO(3)) consists of softly agglomerated clusters of bar-shaped multifaceted micrometer-sized grains (0.5-4.0 mu m long and 0.5-1.0 mu m wide). templated LiSbO(3) (T-LiSbO(3)) consists of an agglomeration-free morphology with discrete cubic shaped particles of sizes 40-80 nm. Electrochemical investigation in 2032 type coin cells vs Li/Li(+) shows that Li insertion in LiSbO(3) takes place at 0.78 V while Li extraction occurs in two stages at 1.1 and 1.4V with initial capacities of 178 and 196 mAh g(-1) for C-LiSbO(3) and T-LiSbO(3) respectively. While C-LiSbO(3) shows a drastic capacity fading retaining only 28% of initial capacity after 100 cycles, T-LiSbO(3) retains similar to 48% of the initial capacity due to the faceted morphology of the nanoparticles. (C) 2011 Elsevier B.V. All rights reserved.

Item Type:	Article
Uncontrolled Keywords:	Lithium antimony oxide; Honeycomb template; Lithium-ion battery; Anode
Subjects:	Electronics
Divisions:	Fuel Cell and Battery
Depositing User:	Bidhan Chaudhuri
Date Deposited:	16 Jan 2012 12:13
Last Modified:	21 Nov 2012 06:53
URI:	http://cgcri.csircentral.net/id/eprint/276

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