NDLI: Highly sensitive mixed-potential type ethanol sensors based on stabilized zirconia and ZnNb2O6 sensing electrode

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Highly sensitive mixed-potential type ethanol sensors based on stabilized zirconia and ZnNb2O6 sensing electrode

Content Provider	Semantic Scholar
Author	Liu, Fangmeng Yang, Xue Mei Yu, Zhangduo Wang, Bin Guan, Yehui Liang, Xishuang Sun, Peng Liu, Fengmin Gao, Yuan Lu, Geyu
Copyright Year	2016
Abstract	A mixed-potential type stabilized zirconia (YSZ)-based gas sensor using columbite type composite oxide sensing electrode was developed and fabricated, aiming at sensitive detection of ethanol. Among the different oxide sensing electrodes (SEs) developed, the sensor attached with ZnNb2O6-SE was found to achieve the largest sensitivity to ethanol at 625 °C. Furthermore, the result of the effect of sintering temperature on sensing characteristic showed that the sensor utilizing ZnNb2O6-SE sintered at 1000 °C displayed the highest response of −175 mV to 100 ppm ethanol and a low detection limit of 0.5 ppm at 625 °C. ΔV of the present sensor exhibited a segmentally linear relationship to the logarithm of ethanol concentration in the ranges of 0.5–5 ppm and 5–200 ppm, for which the sensitivities were −29 and −112 mV decade−1, respectively. Moreover, the fabricated device also displayed fast response and recovery times, good repeatability, small fluctuation during 30 days continuous high temperature of 625 °C measured periods, and acceptable selectivity to some other interfering gases. Additionally, the sensing mechanism involving mixed potential was further demonstrated by polarization curves.
Starting Page	27197
Ending Page	27204
Page Count	8
File Format	PDF HTM / HTML
DOI	10.1039/C6RA01339B
Alternate Webpage(s)	https://pubs.rsc.org/en/content/getauthorversionpdf/C6RA01339B
Alternate Webpage(s)	https://doi.org/10.1039/C6RA01339B
Volume Number	6
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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