Hydrogen Sulfide Sensor Using Stabilized Zirconia And Oxide Sensing Electrode
説明
SUMMARY A solid electrolyte H2S sensor was fabricated by combining a YzO3-stabilized zirconia tube with a semiconductor electrode layer of W83. This device was found to respond well to 0.3-25 ppm H2S in air at 400 "C, with acceptable response rates. The EMF value of the sensor varied logarithmically with H2S concentration with a slope of -74 mV/decade. It is proposed that the H2S sensing signal is attributed to the mixed potential which is determined kinetically by the anodic and cathodic reactions taking place simultaneously at the zirconiaN03 interface. This mechanism was confirmed from the measurements of polarization curves for the both electrode reactions.
収録刊行物
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- Proceedings of the International Solid-State Sensors and Actuators Conference - TRANSDUCERS '95
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Proceedings of the International Solid-State Sensors and Actuators Conference - TRANSDUCERS '95 2 845-848, 2005-08-25
IEEE