| POLYMERS AND POLYMER MATRIX COMPOSITES |
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| Performance Studies of a Flexible Electrochemical O2 Sensor Based on Ionic Liquid Electrolyte |
| YAN Yuhao1, GUO Yang1,2,*, WANG Lichao1, HOU Chengyi1, ZHANG Qinghong3, LI Yaogang3, QIN Zongyi1, WANG Hongzhi1
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1 State Key Laboratory of Fiber Material Modification, Donghua University, Shanghai 201620, China
2 Engineering Research Center of Digital Textile and Garment Technology, Ministry of Education, Donghua University, Shanghai 201620, China
3 Engineering Research Center of Advanced Glass Manufacturing Technology, Ministry of Education, Donghua University, Shanghai 201620, China |
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Abstract Oxygen is the basis for the survival of living organisms. Too low or too high oxygen concentration in the environment will affect people’s health, and even endanger their lives. Therefore, it is necessary to detect the oxygen content, especially in a strange environment. In recent years, with the rapid development of intelligent wearable electronics, the development of flexible oxygen sensors has attracted more and more attention owning to their adaptability, conformal design and lightweight. In this work, we prepared a flexible O2 electrochemical sensor based on 1-butyl-3-methylimidazolium hexafluorophosphate [BMIM]PF6 ionic liquid electrolyte and polyethylene terephthalate (PET) flexible substrate by using electroplating and flexible encapsulation technology. The results show that the oxygen sensor has a good linearity (R2=0.974) when the oxygen concentration is in the range of 0% to 60%. The T90 response time of the sensor is about 20 s and the sensitivity is 0.534. The flexible electrochemical oxygen sensor has a broad application prospect in intelligent wearables, industrial security, and other fields.
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Published: 25 June 2023
Online: 2023-06-20
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| Fund:China Postdoctoral Science Foundation (2019M651324). |
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2023, Vol. 37 
