Design and test of electrochemical NO2 gas sensor based on HTCC technology.

An electrochemical NO2 gas sensor was fabricated by using high temperature co-fired ceramic (HTCC) process with zirconia ceramics, conductive metal paste and room temperature ionic liquid as the main raw materials. The electrochemical performance of the sensor electrode and the output and response characteristics of the sensor were studied. The results showed that the room temperature ionic liquid 1-butyl-3-methylimidazolium bis-trifluoromethylsulfonyl imide salt used in the experiment was suitable as the electrolyte of the electrochemical NO2 gas sensor, and the suitable working voltage was 1.2 V; when the detection range of the sensor was 0~0.010% (volume fraction), and the accuracy was 1.5% FS. The response time (τ90) of the sensor was 25 s, which was superior to the traditional chamber electrochemical gas sensor. [ABSTRACT FROM AUTHOR]