An amperometric solid state NO sensor using a LaGaO3 electrolyte for monitoring exhaust gas

被引:8
|
作者
Dutta, Atanu [1 ]
Ishihara, Tatsumi [1 ]
机构
[1] Kyushu Univ, Fac Engn, Dept Appl Chem, Nishi Ku, Fukuoka 8190395, Japan
关键词
amperometric sensor; current response; exhaust gas monitoring; high temperature sensor; LaGaO3; LSM electrode; mixed potential; Ni doping to LaGaO3; NO oxidation electrode; NO sensor; oxygen reduction electrode; pollution; selectivity; sensitivity; solid electrolyte;
D O I
10.1080/10426910500464404
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
A LaGaO3-based electrochemical sensor in the amperometric mode was demonstrated as highly sensitive to NO in the temperature range 500-700 degrees C. Sensor performance was found dependent on the Ni doping of LaGaO3. Using optimized electrode materials, highest sensitivity was achieved as high as 2409 mu A/decade (at 550 degrees C) when Ni doping to electrolyte was 7 mol%. The selectivity of the sensor was found very high to NO with respect to the typical coexisting gases in the exhaust environment. The sensing principle was observed to follow the mixed potential behavior.
引用
收藏
页码:225 / 228
页数:4
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