Zirconia-based amperometric sensor using La–Sr-based perovskite-type oxide sensing electrode for detection of NO2 |
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| Authors: | Taro Ueda Takayuki Nagano Hajime Okawa Seiji Takahashi |
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| Affiliation: | aMaterials Research and Development Laboratory, Japan Fine Ceramic Center, Atsuta-ku, Nagoya 456-8587, Japan |
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| Abstract: | An amperometric zirconia-based sensor attached with perovskite-type oxide sensing electrode was examined for monitoring NO2 in automobile exhaust. The sensor using La0.6Sr0.4Co0.98Mn0.02O3 showed high response to NO2. The response was almost linear to NO2 concentration in the range between 50 and 800 ppm, and a 90% reaction time to 400 ppm NO2 was less than 20 s. Though the NO2 response of the sensor was slightly affected by the changes in O2 concentrations, it showed still high response in the examined range of 5–21 vol%. |
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| Keywords: | Gas sensor NOx YSZ Amperometric sensor Perovskite |
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