Title :
Mixed-potential type NOx sensor using stabilized zirconia and Cr2O3-WO3 nanocomposites
Author :
Diao, Quan ; Liang, Xishuang ; Li, Jianguo ; Yang, Shiqi ; Yin, Chengguo ; Lu, Geyu
Author_Institution :
State Key Lab. on Integrated Optoelectron., Jilin Univ., Changchun, China
Abstract :
Solid state electrochemical sensors using yttria-stabilized zirconia (YSZ) plate and Cr2O3-WO3 nanocomposites were fabricated. The effects of the sintering temperature on the electrode microstructure were investigated. It was found that the sensor sintered at 1000 °C exhibited larger sensitivity to NO2 in the examined range of 20-300ppm than other sensors sintered at 800°C, 900°C, and 1100°C; and it was speculated that the microstructure of the SE was the primary factor. The NO2 sensing characteristics of the sensors were examined at high temperature.
Keywords :
chromium compounds; electrochemical electrodes; electrochemical sensors; nanocomposites; nanofabrication; nitrogen compounds; sintering; tungsten compounds; yttrium compounds; zirconium compounds; Cr2O3-WO3; NO2; Y2O3-ZrO2; electrode microstructure; mixed-potential type NOx sensor; nanocomposite; sintering temperature; solid state electrochemical sensor; temperature 1000 degC; temperature 1100 degC; temperature 800 degC; temperature 900 degC; yttria-stabilized zirconia plate; Electric potential; Electrodes; Microstructure; Sensitivity; Solids; Temperature sensors; Cr2O3-WO3; Mixed potential; NO2 sensor; YSZ;
Conference_Titel :
Solid-State Sensors, Actuators and Microsystems Conference (TRANSDUCERS), 2011 16th International
Conference_Location :
Beijing
Print_ISBN :
978-1-4577-0157-3
DOI :
10.1109/TRANSDUCERS.2011.5969252
