CARBON-DIOXIDE SENSOR USING COMBINATION OF FLUORIDE-ION CONDUCTOR ANDMETAL CARBONATE

Authors
MIURA N YAO S SATO M SHIMIZU Y KUWATA S YAMAZOE N
Citation
N. Miura et al., CARBON-DIOXIDE SENSOR USING COMBINATION OF FLUORIDE-ION CONDUCTOR ANDMETAL CARBONATE, Chemistry Letters, (11), 1993, pp. 1973-1976
Citations number
20
Categorie Soggetti
Chemistry
Journal title
Chemistry Letters → ACNP
ISSN journal
03667022
Issue
11
Year of publication
1993
Pages
1973 - 1976
Database
ISI
SICI code
0366-7022(1993):11<1973:CSUCOF>2.0.ZU;2-H
Abstract
A solid-state electrochemical CO2 sensor was obtained by combining a f luoride ion conductor (LaF3) with an auxiliary phase of a metal carbon ate. The sensor response (EMF) was found to follow the Nernst's equati on for a 2-electron reduction of CO2 in the range of 40 - 2000 ppm at 400 and 450-degrees-C. The 90% response times were as short as 10-20 s at 400-degrees-C. The sensing mechanism of this new type CO2 sensor w as discussed.