Title :
A NASICON CO2 gas sensor with drift-detection electrode
Author :
Chen, Song ; Hadano, Hironori ; Ishiguro, Yoshiaki ; Nakayama, Masakatsu ; Watanabe, Kenzo
Author_Institution :
Res. Inst. of Electron., Shizuoka Univ., Hamamatsu, Japan
fDate :
6/24/1905 12:00:00 AM
Abstract :
A Nasicon (sodium super ion conductor) CO2 gas sensor with a new structure is developed for monitoring CO2 level in the atmospheric air. In addition to the sensing and reference electrodes of a conventional Nasicon sensor, an auxiliary electrode, referred to as the base electrode, is provided with the new structure. Characterization has revealed that the output voltage at the base electrode is closely correlated with the drift at the sensing electrode and is available for the drift compensation.
Keywords :
air pollution measurement; carbon compounds; electrochemical electrodes; electrochemical sensors; gas sensors; silicon compounds; sodium compounds; solid electrolytes; zirconium compounds; CO2; NASICON; NASICON gas sensor; NaZrSiO4PO4; X-ray diffraction; aging; atmospheric monitoring; auxiliary electrode; differential thermal analysis; drift compensation; drift-detection electrode; electrochemical reactions; electromotive force; enhanced sensitivity; internal impedance; sintering; sol-gel process; solid electrolyte; step response; Chemicals; Electrodes; Electrons; Fabrication; Gas detectors; Gases; Impedance; Resistance heating; Temperature sensors; Voltage;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2002. IMTC/2002. Proceedings of the 19th IEEE
Print_ISBN :
0-7803-7218-2
DOI :
10.1109/IMTC.2002.1006853
