High-temperature sensors for NO and NO2 based on stabilized zirconia and spinel-type oxide electrodes

被引：142

作者：

Lu, G ^{[1
]}

Miura, N ^{[1
]}

Yamazoe, N ^{[1
]}

机构：

[1] KYUSHU UNIV,GRAD SCH ENGN SCI,DEPT MAT SCI & TECHNOL,KASUGA,FUKUOKA 816,JAPAN

来源：

JOURNAL OF MATERIALS CHEMISTRY | 1997年 / 7卷 / 08期

关键词：

D O I：

10.1039/a701708a

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Zirconia-based electrochemical devices attached with an oxide sensing electrode have been examined for gas sensing properties towards NO and NO2 at high temperature. Among the twelve kinds of spinel-type oxides tested, CdCr2O4 was the most sensitive electrode material to both NO and NO2 in air at 500-600 degrees C, also being endowed with quick response and recovery characteristics. Values of E-EMF of the CdCr2O4-attached device decreased or increased linearly with an increase in the logarithm of NO or NO2 concentration, respectively. The same device gave small or insignificant cross-sensitivities to H-2, CO, CH4, CO2 and H2O. Sensing mechanisms involving mixed potential were confirmed from the measurements of polarization curves.

引用

页码：1445 / 1449

页数：5

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