Carbon Dioxide Sensor Using Combination of Fluoride Ion Conductor and Metal Carbonate
- 1 November 1993
- journal article
- research article
- Published by Oxford University Press (OUP) in Chemistry Letters
- Vol. 22 (11) , 1973-1976
- https://doi.org/10.1246/cl.1993.1973
Abstract
A solid-state electrochemical CO2 sensor was obtained by combining a fluoride ion conductor (LaF3) with an auxiliary phase of a metal carbonate. The sensor response (EMF) was found to follow the Nernst’s equation for a 2-electron reduction of CO2 in the range of 40–2000 ppm at 400 and 450 °C. The 90% response times were as short as 10–20 s at 400 °C. The sensing mechanism of this new type CO2 sensor was discussed.Keywords
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