Solid Electrolyte CO2 Sensor Using NASICON and Li-based Binary Carbonate Electrode
- 1 November 1991
- journal article
- research article
- Published by Oxford University Press (OUP) in Chemistry Letters
- Vol. 20 (11) , 2069-2072
- https://doi.org/10.1246/cl.1991.2069
Abstract
A solid electrolyte CO2 sensor was developed by combining an Na+ conductor and a Li-based binary carbonate auxiliary electrode represented by Li2CO3–CaCO3 (1.8 : 1 in molar ratio: eutectic mixture). It responded to CO2 quickly and reversibly, following a Nernst equation excellently in the CO2 concentration range 102–105 ppm. In addition, Li2CO3–CaCO3 electrode was found to be stable to deliquescence even when kept under a highly humid condition at 30 °C for more than 700 h.Keywords
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