Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 304, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2019.127270
Keywords
Gel polymer electrolytes; Humidity sensors; In situ preparation; Ultrafast response; Breath monitoring
Funding
- Natural Science Foundation Committee (NSFC) [61773178]
- Projects of Science and Technology Development Plan of Jilin Province [20160520093JH]
- Scientific Research Planning Project of Jilin Provincial Education Department [JJKH20180156KJ]
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Respiratory monitoring is crucial for the assessment of human health, and can be realized by detecting the humidity of exhaled gases. In this work, a facile method for the in situ fabrication of stable humidity sensors based on gel polymer electrolytes was developed. The obtained humidity sensors demonstrate ultrafast response/recovery times (0.19/0.30 s), which are very promising for monitoring respiration. Reliable signals for different respiratory states were obtained via humidity sensors. In addition, the ultrafast-response mechanism of the sensors was investigated using complex impedance spectroscopy and a quartz crystal microbalance (QCM).
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