The leakage of flammable and explosive lithiumion battery(LIB) electrolytes can be one of the early symptoms of battery malfunction and can even lead to spontaneous battery combustion or electric car explosion. Theref...The leakage of flammable and explosive lithiumion battery(LIB) electrolytes can be one of the early symptoms of battery malfunction and can even lead to spontaneous battery combustion or electric car explosion. Therefore, it is necessary to find a rapid and simple method to monitor any leakage of LIB electrolytes. However, LIB electrolytes are generally composed of volatile and redox neutral carbonate solvents. Trace amounts of electrolyte leakage are difficult to detect effectively and rapidly by existing compact sensors.Here, for the first time, we propose a strategy that cooperatively combines the sensitivity of organic field-effect transistors(OFETs) and the selectivity of biurea receptors to detect LIB electrolyte leakage. The fabricated sensors show much higher sensitivity than the pristine sensor without receptors, and the detection limit of the sensor toward diethyl carbonate was 1.4 ppm. Trace amounts of LIB electrolyte leakage could be detected effectively in seconds, with 200 n L electrolyte leakage leading to a 3% response. We also demonstrate the real-time detection of LIB electrolyte leakage by our OFET sensors. The excellent performance of the receptorcoated OFET sensor makes it a good candidate for LIB safety monitoring and provides a promising platform for the development of sensing technologies.展开更多
基金supported by the Science and Technology Foundation of Shanghai(19JC1412402 and 20JC1415600)the National Natural Science Foundation of China(62074111)+2 种基金Shanghai Municipal Science and Technology Major Project(2021SHZDZX0100)Shanghai Municipal Commission of Science and Technology Project(19511132101)the support of the Fundamental Research Funds for the Central Universities。
基金supported by the National Natural Science Foundation of China (61822405 and 62074111)the Science & Technology Foundation of Shanghai (19JC1412402 and 20JC1415600)+2 种基金Shanghai Municipal Science and Technology Major Project (2021SHZDZX0100)Shanghai Municipal Commission of Science and Technology Project (19511132101)the Fundamental Research Funds for the Central Universities。
文摘The leakage of flammable and explosive lithiumion battery(LIB) electrolytes can be one of the early symptoms of battery malfunction and can even lead to spontaneous battery combustion or electric car explosion. Therefore, it is necessary to find a rapid and simple method to monitor any leakage of LIB electrolytes. However, LIB electrolytes are generally composed of volatile and redox neutral carbonate solvents. Trace amounts of electrolyte leakage are difficult to detect effectively and rapidly by existing compact sensors.Here, for the first time, we propose a strategy that cooperatively combines the sensitivity of organic field-effect transistors(OFETs) and the selectivity of biurea receptors to detect LIB electrolyte leakage. The fabricated sensors show much higher sensitivity than the pristine sensor without receptors, and the detection limit of the sensor toward diethyl carbonate was 1.4 ppm. Trace amounts of LIB electrolyte leakage could be detected effectively in seconds, with 200 n L electrolyte leakage leading to a 3% response. We also demonstrate the real-time detection of LIB electrolyte leakage by our OFET sensors. The excellent performance of the receptorcoated OFET sensor makes it a good candidate for LIB safety monitoring and provides a promising platform for the development of sensing technologies.
