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A Basic Thin Film Study of Spinel Limn204 As a Possible Cathode Material for Lithium Secondary Cells
Published online by Cambridge University Press: 15 February 2011
Abstract
In a series of fundamental studies on the cathode active materials for a lithium secondary cell using geometrically well-defined sample electrodes, thin films of spinel LiMn204 on a platinum plate were investigated in this work in an LiCl04/propylene carbonate solution. These pyrolytically prepared films exihibit reversible extraction/insertion behavior for lithium under galvanostatic charge/discharge cycling between 4.3-3.5 V. The chemical diffusion coefficient of lithium in LixMn204 determined by the galvanostatic intermittent titration technique (GITT) was in the order of 10−7-10−10 cm2- s−1 within a spinel single-phase region of 0.6<x<1.0 and increased with increasing x.
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