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Kinetic modeling study on the combustion treatment of cathode from spent lithium-ion batteries.

08:00 EDT 11th October 2019 | BioPortfolio

Summary of "Kinetic modeling study on the combustion treatment of cathode from spent lithium-ion batteries."

Thermal treatment offers an alternative method for the separation of aluminum foil and cathode materials during spent lithium-ion batteries recycling. In this work, the combustion kinetic of cathode was studied based on six model-free (isoconversional) methods, namely Flynn-Wall-Ozawa (FWO), Friedman, Kissinger-Akahira-Sunose, Starink, Tang, and Boswell methods. The possible decomposition mechanism was also probed using a master-plots method (Criado method). Thermogravimetric analysis showed that the whole thermal process could be divided into three stages with temperatures of 37-578°C, 578-849°C, and 849-1000°C. The activation energy () derived from these model-free methods displayed the same trend, gradually increasing with a conversion range of 0.002-0.013, and significantly elevating beyond this range. The coefficients from the FWO method were larger, and the resulted fell into the range of 10.992-40.298 kJ/mol with an average value of 20.228 kJ/mol. Comparing the theoretical master plots with an experimental curve, the thermal decomposition of cathode could be better described by the geometric contraction models.

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This article was published in the following journal.

Name: Waste management & research : the journal of the International Solid Wastes and Public Cleansing Association, ISWA
ISSN: 1096-3669
Pages: 734242X19879224

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