Accelerating Rate Calorimetry Study on the Thermal Stability of Lithium Intercalated Graphite in Electrolyte. II. Modeling the Results and Predicting Differential Scanning Calorimeter Curves

Abstract

Accelerating rate calorimeter (ARC) results for mesocarbon microbead electrodes in electrolyte and a reaction mechanism to qualitatively understand the results have been previously reported in the preceding companion paper. Here, a mathematical model, based on the previously proposed mechanism, is developed in order to calculate self‐heating rate profiles. The calculated self‐heating rate profiles reproduce qualitatively the experimentally measured trends. The mathematical model for the self‐heating of this anode material in electrolyte can be used to calculate differential scanning calorimeter (DSC) profiles. Using adjustable parameters, determined and fixed by comparisons to ARC experiments, the calculated DSC profiles approximate the measured DSC profiles, suggesting the reaction kinetics are correctly represented by the model. © 1999 The Electrochemical Society. All rights reserved.