Mixed potential hydrogen sensor using ZnWO4 sensing electrode

作者：Tang, Zhaoyun; Li, Xiaogan^*; Yang, Jianhang; Yu, Jun; Wang, Jing; Tang, Zhenan

来源：Sensors and Actuators B: Chemical , 2014, 195: 520-525.

DOI：10.1016/j.snb.2014.01.086

• Mixed-potential gas sensor
• Hydrogen
• YSZ
• ZnWO4 sensing electrode

Monoclinic ZnWO4 has been investigated the first time for the sensing electrode of the yttria-stabilized zirconia (YSZ) based mixed-potential hydrogen sensors. The sensor of ZnWO4/YSZ/Pt indicated a good sensitivity to hydrogen in a concentration range of 0.5-3.0 vol% and excellent selectivity over some possible interferents such as CO, propane and NO2 at 600 degrees C in a background of 10 vol% oxygen balanced with nitrogen. The response repeatability of the sensor and sensor to consistency was investigated. The half-month long-term performance of the sensor to different concentrations of hydrogen at 600 degrees C was also examined. The sensor demonstrated significantly potential to be developed for a selective hydrogen sensor.

• 出版日期2014-5
• 单位大连理工大学