期刊
NANOTECHNOLOGY
卷 34, 期 13, 页码 -出版社
IOP Publishing Ltd
DOI: 10.1088/1361-6528/acae5d
关键词
Fe3O4@uio66; core-shell; electrolyte detection; lithium-ion batteries; early safety warning
In this study, Fe3O4@uio66 core-shell composite was prepared by a facile method. Compared to pure Fe3O4, Fe3O4@uio66 shows enhanced selective response to volatile organic compounds, especially electrolyte vapors of lithium-ion batteries, and long-term stability due to the preconcentrator feature and thermal stability of the uio66 thin shell. Real-time detection of electrolyte leakage in a punctured lithium-ion battery further demonstrated the practical ability of the Fe3O4@uio66 sensor with long-term aging stability.
Fe3O4 is an environmentally friendly gas sensing material with high response, but the cross-response to various analytes and poor thermal stability limit its practical applications. In this work, we prepared Fe3O4@uio66 core-shell composite via a facile method. The selective response to volatile organic compounds, especially to electrolyte vapors of lithium-ion batteries, as well as long-term stability of Fe3O4@uio66 has been dramatically enhanced compared to pure Fe3O4, due to the preconcentrator feature and thermal stability of the uio66 thin shell. Real-time detection of electrolyte leakage for an actual punctured lithium-ion battery was further demonstrated. The Fe3O4@uio66 sensor, after aging for 3 months, was able to detect the electrolyte leakage in 30 s, while the voltage of the punctured battery was maintained at the same level as that of a pristine battery over 6 h. This practical test results verified ability of the Fe3O4@uio66 sensor with long-term aging stability for hours of early safety warning of lithium-ion batteries.
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