Article ID Journal Published Year Pages File Type
1623723 Journal of Alloys and Compounds 2009 5 Pages PDF
Abstract

In order to disclose the decomposition kinetics of charged LiMn2O4 used in lithium-ion batteries, thermogravimetric analyzer (TGA) and C80 micro-calorimeter were employed in this study. Three stages of weight loss were detected by TG and two main exothermic processes were detected by C80 micro-calorimeter for the charged LiMn2O4. The chemical reaction kinetics is supposed to fit by an Arrhenius law, and then the activation energy is calculated as Ea = 90.4 and 140.1 kJ mol−1 based on TG and C80 data, respectively. And the C80 method shows more advantages in studying the thermodynamic and kinetic parameters for both the electrodes alone and its co-existing system with electrolyte.

Related Topics
Physical Sciences and Engineering Materials Science Metals and Alloys
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