High-temperature NO or NO2 sensor using stabilized zirconia and tungsten oxide electrode

被引：0
|
作者：
G. Lu
N. Miura
N. Yamazoe
机构：
[1] Kyushu University,Department of Molecular and Material Sciences, Graduate School of Engineering Sciences
来源：
Ionics | 1998年 / 4卷
关键词：
Oxide; Physical Chemistry; Analytical Chemistry; Zirconia; Tungsten;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Stabilized zirconia-based electrochemical devices for which the sensing electrode was provided with a single-metal oxide were tested for NO and NO2 sensing properties at high temperature. Among the many single-metal oxides examined, WO3 was found to give the best sensing properties to NO and NO2 at 500–700°C. The EMF response of the WO3-attached device was linear to the logarithm of NO or NO2 concentration. The response and recovery kinetics were speedy. The device gave very small cross-sensitivities to H2, CO, CH4, CO2 and water vapor. The sensing mechanism involving mixed-potential was confirmed from the measurements of polarization curves.
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页码：16 / 24
页数：8
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