Influence of humidity on electrochemical CO2 sensors based on sol-gel processed NASICON with new compositions

Authors
Di Bartolomeo, E Traversa, E Montanaro, L Aono, H Sadaoka, Y
Citation
E. Di Bartolomeo et al., Influence of humidity on electrochemical CO2 sensors based on sol-gel processed NASICON with new compositions, J SOL-GEL S, 19(1-3), 2000, pp. 181-185
Citations number
6
Categorie Soggetti
Material Science & Engineering
Journal title
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
ISSN journal
09280707 → ACNP
Volume
19
Issue
1-3
Year of publication
2000
Pages
181 - 185
Database
ISI
SICI code
0928-0707(200012)19:1-3<181:IOHOEC>2.0.ZU;2-H
Abstract
Sol-gel processed NASICON-type with new compositions in the Na3Zr2-(x/4)Si2 -xP1+xO12 system showed an improved sinterability with an increase in the x value. This is attributed to liquid phase sintering. This dense electrolyt e system is suitable for the application as gas sensors. The CO2 gas sensor s using highly dense x = 0.667 (sample B) and x = 1.333 (sample C) samples show a stable EMF response in dry atmosphere which is very close to the the oretical value. Although a lower sensitivity and slower response were obtai ned in humid CO2 gas, the sensor performance recovered after switching from humid gas to dry gas.