Toxicity Identification and Evolution Mechanism of ThermolysisDriven Gas Emissions from Cathodes of Spent Lithium-Ion Batteries
- 点击次数：
- 影响因子：8.198
- DOI码：10.1021/acssuschemeng.9b03739
- 发表刊物：ACS Sustainable Chemistry & Engineering
- 关键字：Lithium-ion batteries wastes, Toxic gas emission, Evolution mechanism, Thermolysis, TG-DSC-EI-MS
- 摘要：Spent lithium-ion batteries (LIBs) typically contain a combination of both strategic materials and toxic chemicals that cannot be easily disposed. Nowadays, that are many different methods used to treat spent LIBs with the primary aim of critical metals recovery; nevertheless, as a result of the toxic chemicals within the battery waste, the chemical composition and potential danger of the off-gases generated during recycling process have become a serious concern. In an attempt to further understand the characteristics of the off-gases that are emitted from spent LIBs
cathodes during thermolysis process, a system of thermogravimetry−differential thermal analysis coupled with mass spectrometry equipped with skimmer-type interface and with electron ionization (TG-DSC-EI-MS) has been employed to qualitatively analyze the generated off-gases. Based on the obtained observations, it was confirmed that inorganic gases of H
2,H2O, CO2, gaseous hydrocarbons, and fluoride-containing gases were generated. Moreover, the off-gas species and relative yield of the individual gases formed were found to be significantly affected by the thermolysis temperature under different atmospheric conditions. From the combined results from TG-DSC-EI-MS, thermogravimetric differential scanning calorimetry analysis (TG-DSC), chemical analysis, X-ray diffraction (XRD), and
scanning electron microscopy (SEM), the correlation between the evolution characteristics of the gas emissions and thermolysis
behavior of the cathodes from spent LIBs has been established. The availability of this type of quantitative data is useful when
undertaking environmental assessments and for the design of off-gas management systems for spent LIBs recycling processes.
- 论文类型：期刊论文
- 学科门类：工学
- 一级学科：冶金工程
- 文献类型：J
- 卷号：7
- 期号：22
- 页面范围：18228-18235
- 是否译文：否
- 发表时间：2019-11-18
- 收录刊物：SCI
附件：
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