Synthesis of a Polyanion Cathode Material, Li[sub 2]Co[sub 2](MoO[sub 4])[sub 3], and Its Electrochemical Properties for Lithium Batteries

Prabaharan, S. R. S. and Michael, M. S. and Begam, K. M. (2004) Synthesis of a Polyanion Cathode Material, Li[sub 2]Co[sub 2](MoO[sub 4])[sub 3], and Its Electrochemical Properties for Lithium Batteries. Electrochemical and Solid-State Letters, 7 (11). A416-A420. ISSN 10990062

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Official URL: http://dx.doi.org/10.1149/1.1804093

Abstract

High voltage redox properties of a polyanion material, Li2Co2(MoO4)(3), as positive electrode was demonstrated against lithium for the first time. The orthorhombic structure showed reversible extraction and insertion cycles of lithium at a potential of ca. 4.9 V vs. Li+/Li as well as 1.5 V. The former potential was attributed to Co2+/Co3+ and the latter to Mo6+/Mo5+. The reason for the change in charge/discharge curves after the first charge is clearly demonstrated by the structural changes (monoclinic, P2/m) caused by electrochemical extraction and insertion of lithium as deduced from the ex situ X-ray diffraction analysis on the cycled electrode pellet. (C) 2004 The Electrochemical Society.

Item Type: Article
Subjects: Q Science > Q Science (General)
Divisions: Faculty of Engineering (FOE)
Depositing User: Ms Rosnani Abd Wahab
Date Deposited: 22 Aug 2011 02:27
Last Modified: 22 Aug 2011 02:27
URI: http://shdl.mmu.edu.my/id/eprint/2492

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