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Vol. 34, No. 8(3), S&M3042

Notice of retraction
Vol. 32, No. 8(2), S&M2292

Print: ISSN 0914-4935
Online: ISSN 2435-0869
Sensors and Materials
is an international peer-reviewed open access journal to provide a forum for researchers working in multidisciplinary fields of sensing technology.
Sensors and Materials
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Sensors and Materials, Volume 19, Number 6 (2007)
Copyright(C) MYU K.K.
pp. 365-376
S&M689 Research Paper of Special Issue
Published: 2007

Effects of Electrode Materials on CO2 Sensing Properties of Solid-Electrolyte Gas Sensors [PDF]

Takeo Hyodo, Tadashi Furuno, Shizuko Kumazawa, Yasuhiro Shimizu and Makoto Egashira

(Received July 7, 2007; Accepted August 1, 2007)

Keywords: CO2, humidity, solid electrolyte, potentiometric sensors

The effect of oxide powder addition to a carbonate auxiliary electrode on the CO2-sensing properties of Na3Zr2Si2PO12 (NASICON) gas sensors has been investigated. CO2 was adsorbed on the surfaces of most of the oxides tested after treatment at 400°C in dry air, while the coexistence of H2O reduced the amount of adsorbed CO2. However, the amount of CO2 adsorbed on the oxides was not correlated with the CO2 response of the NASICON sensors equipped with an electrode containing the oxide. The CO2 response increased and the humidity cross response decreased with a decrease in the resistance of the oxides. This result suggests that the strict conductivity control of auxiliary electrodes is an important factor for achieving high-performance potentiometric CO2 sensors.

Corresponding author: Takeo Hyodo


Cite this article
Takeo Hyodo, Tadashi Furuno, Shizuko Kumazawa, Yasuhiro Shimizu and Makoto Egashira, Effects of Electrode Materials on CO2 Sensing Properties of Solid-Electrolyte Gas Sensors, Sens. Mater., Vol. 19, No. 6, 2007, p. 365-376.



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