Thermal properties and kinetics study of charged LiCoO2 by TG and C80 methods |
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| Authors: | Q S Wang J H Sun C H Chen X M Zhou |
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| Institution: | (1) State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei, 230026, P.R. China;(2) Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, 230026, P.R. China |
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| Abstract: | The thermal stability of lithium-ion battery cathode could substantially affect the safety of lithium-ion battery. In order
to disclose the decomposition kinetics of charged LiCoO2 used in lithium ion batteries, thermogravimetric analyzer (TG) and C80 microcalorimeter were employed in this study. Four
stages of mass losses were detected by TG and one main exothermic process was detected by C80 microcalorimeter for the charged
LiCoO2. The chemical reaction kinetics is supposed to fit by an Arrhenius law, and then the activation energy is calculated as E
a=148.87 and 88.87 kJ mol−1 based on TG and C80 data, respectively. |
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| Keywords: | C80 microcalorimeter kinetics LiCoO2 lithium ion battery TG |
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