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标题：Experimental analysis of overcharged Li-polymer batteries
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作者：Serena Ciorba ; Mirko Marracci ; Claudia Antonetti 等
期刊名称：Case Studies in Chemical and Environmental Engineering
印刷版ISSN：2666-0164
出版年度：2020
卷号：2
页码：1-8
DOI：10.1016/j.cscee.2020.100012
语种：English
出版社：Elsevier
摘要：AbstractSince safety hazards can occur during the life of a Li-ion battery, understanding its behavior under abusive conditions is important for the development of a safe cell. In this work, overcharge tests on commercial Li-polymer cells were conducted in a climatic chamber, resulting in gas evolution. A comprehensive post-mortem analysis of the abused cells was carried out: the exhaust gases were identified by gas phase chromatography coupled with a thermal conductivity detector (micro-GC/TCD), then flammable and toxic species were detected; the cathode and anode materials were analyzed using scanning electron microscopy (SEM) and energy dispersive X-ray spectrometry (EDS), while the electrolyte composition was studied by Fourier-transform infrared spectroscopy (FT-IR). Interestingly, the ambient temperature seemed to affect the degradation of the cell materials and hence the composition of the evolved gas.Graphical abstractDisplay Omitted
关键词：KeywordsenLithium-ion cellOverchargeGas ventingHazardous gas species