Optimization of synthesis condition and the electrochemical properties of LiVMO6−δ (M=Mo or W) as candidate positive electrode material for lithium batteries

Prabaharan, S (2002) Optimization of synthesis condition and the electrochemical properties of LiVMO6−δ (M=Mo or W) as candidate positive electrode material for lithium batteries. Solid State Ionics, 152-153. pp. 91-97. ISSN 01672738

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Official URL: http://dx.doi.org/10.1016/S0167-2738(02)00347-8

Abstract

A new family of high voltage (4 V) class positive electrode materials namely LiVMO6-delta [M=Mo or W] has been identified for use in lithium-containing rechargeable cells. The lithiated twin transition metal oxides have been synthesized following a simple aqueous solution reaction (ASR) process called soft-combustion method. The submicronic particles of the electrode powder, thus prepared, demonstrate the high voltage behavior in lithium-containing cells, Electrochemical studies such as galvanostatic intermittent charge-discharge (GITT) experiments and cyclic voltammetry (CV) have proved that these materials could certainly be regarded as 4-V type materials with specific capacities as high as similar to 165 mA h/g (LiVMoO6-delta) and similar to 95 mA h/g ((LiVWO6-delta) between 4.6 and 2.8 V Both these materials are found to have similar electrochemical character with respect to their operating voltages. Among these brannerites, LiVMoO6-delta exhibits a higher practical capacity than its tungstate counterpart. (C) 2002 Elsevier Science B.V. All rights reserved.

Item Type: Article
Subjects: Q Science > QD Chemistry
Divisions: Faculty of Engineering (FOE)
Depositing User: Ms Rosnani Abd Wahab
Date Deposited: 24 Aug 2011 02:17
Last Modified: 24 Aug 2011 02:17
URI: http://shdl.mmu.edu.my/id/eprint/2622

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