Stabilized zirconia-based sensor attached with NiO/Au sensing electrode aiming for highly selective detection of ammonia in automobile exhausts
Stabilized zirconia-based sensor attached with NiO/Au sensing electrode aiming for highly selective detection of ammonia in automobile exhausts
复制标题
DOI：
10.1149/1.2971171
复制
发表时间：
2008-01-01
影响因子：
--
通讯作者：
Miura, Norio
中科院分区：
文献类型：
--
作者：
Elumalai, Perumal;Plashnitsa, Vladimir V.;Miura, Norio
利用氧化钇稳定氧化锆-氧化物基传感电极（SE）制备了一种平面混合电位型传感器，并报道了其NH3传感特性的初步结果。结果表明，在800℃的湿态条件下（5 vol % H2O）， NiO/Au-SE对NH3具有良好的灵敏度和选择性。虽然对其他检测气体的交叉灵敏度约为+/- 5 mV或可忽略不计，但对100 ppm NH3的灵敏度约为-34 mV。在20-100 ppm的检测范围内，传感器的δ电动势与NH3浓度几乎呈线性变化。
A planar mixed-potential-type sensor using a yttria-stabilized zirconia and oxide-based sensing electrode (SE) was fabricated and the preliminary results on NH3 sensing characteristics were reported here. It was found that the sensor attached with NiO/Au-SE exhibited good sensitivity and excellent selectivity to NH3 at 800 degrees C under the wet condition (5 vol % H2O). While the cross sensitivities to the other examined gases were about +/- 5 mV or negligible, the sensitivity to 100 ppm NH3 was about -34 mV. The Delta emf of the sensor varied almost linearly with the NH3 concentration in the examined range of 20-100 ppm.