Abstract
A miniature CO2 gas sensor based on NASICON (sodium super ionic conductor) thick film was fabricated. The solid-electrolyte NASICON material was synthesized through an inorganic-reagent-based sol-gel method. The resulting materials were characterized by means of X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). NASICON paste was coated on a piece of alumina substrate attached to a platinum heater. Li2CO3-BaCO3 binary carbonate in molar ratio 1 : 1.5 was utilized as the sensing electrode. Within a wide range of CO2 volume ratio concentration from 500 to 5000 ppm, the output electromotive force (EMF) of the sensor followed Nernst equation well at high working temperature. The response and recovery times were 20 and 58 s, respectively. This miniature CO2 gas sensor possessed extra merits such as low power consumption, miniaturized framework, and easy fabrication.
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Original Russian Text © Yu. He, B. Quan, B. Wang, Ch. Zhang, F. Liu, 2007, published in Elektrokhimiya, 2007, Vol. 43, No. 11, pp. 1351–1356.
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He, Y., Quan, B., Wang, B. et al. Investigation of miniature CO2 gas sensor based on NASICON. Russ J Electrochem 43, 1289–1293 (2007). https://doi.org/10.1134/S1023193507110122
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DOI: https://doi.org/10.1134/S1023193507110122