A carbon dioxide gas sensor by combination of multivalent cation and anion conductors with a water-insoluble oxycarbonate-based auxiliary electrode

被引：41

作者：

Imanaka, N ^{[1
]}

Kamikawa, M ^{[1
]}

Adachi, G ^{[1
]}

机构：

[1] Osaka Univ, Fac Engn, Dept Appl Chem, Suita, Osaka 5650871, Japan

来源：

ANALYTICAL CHEMISTRY | 2002年 / 74卷 / 18期

关键词：

D O I：

10.1021/ac011284o

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A compact and inexpensive carbon dioxide gas sensor was successfully realized by the combination of a divalent magnesium ionic conductor Of Mg-0.7(Zr0.85Nb0.15)(4)P6O24 and a divalent oxide anion conducting ZrO2-Y2O3 solid electrolyte with the water-insoluble Li- and Ba-codoped Nd2O2CO3 solid solution as the auxiliary electrode. The sensor response was continuous and reproducible, and the present sensor also demonstrated a theoretical Nernst response in the atmosphere where water vapor, nitrogen oxides, ammonia, etc., coexist. The exposure of the present sensor to water dew and variation in oxygen concentration does not interfere with the sensor response, which will be a great advantage in applying the in situ practical CO2 detection in combustion exhaust gas atmospheres.

引用

页码：4800 / 4804

页数：5

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