Organic gas sensor using BiCuVOx solid electrolyte
Organic gas sensor using BiCuVOx solid electrolyte
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DOI：
10.1016/j.elecom.2007.12.013
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发表时间：
2008-02
影响因子：
5.4
通讯作者：
T. Kida;Takuya Minami;M. Yuasa;K. Shimanoe;N. Yamazoe
中科院分区：
文献类型：
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作者：
T. Kida;Takuya Minami;M. Yuasa;K. Shimanoe;N. Yamazoe
研究了一种基于BiCuVOx（Bi2Cu0.1V0.9O5.35）固体电解质的电位式有机气体传感器。将BiCuVOx/La0.6Sr0.4Co0.78Ni0.02Fe0.2O3复合电极置于BiCuVOx烧结盘上，在350 ~ 500℃条件下测量了传感器装置的电动势（EMF）。该装置对甲醛、甲苯和乙醇等挥发性有机化合物（VOC）有反应，但对甲烷、丙烷、丙烯、CO和H2几乎不敏感。传感器的电动势与有机气体浓度的对数呈线性关系，表明电动势的产生是在混合电位理论的基础上解释的。所观察到的对VOC的良好敏感性源于bicuvox2良好的氧化离子电导率和钙钛矿氧化物电极在较低温度下的适当电催化活性。
A potentiometric organic gas sensor-based on BiCuVOx(Bi2Cu0.1V0.9O5.35) solid electrolyte was investigated. Electromotive force (EMF) of the sensor device, in which a BiCuVOxsintered disk is fitted with composite electrodes of BiCuVOx/La0.6Sr0.4Co0.78Ni0.02Fe0.2O3, was measured in the presence of various organic gases at 350–500°C. The device responded to volatile organic compounds (VOC) of formaldehyde, toluene, and ethanol, but showed little sensitivities to methane, propane, propene, CO, and H2. The EMF of the sensor was linear to the logarithm of organic gas concentrations, suggesting that the generation of EMF is explained on the basis of the mixed potential theory. The observed good sensitivity toward VOC derives from the good oxide ion conductivity of BiCuVOxand proper electro-catalytic activity of the perovskite oxide electrode even at lower temperature.