Solid electrolyte CO2 sensor using NASICON and perovskite-type oxide electrode

被引：69

作者：

Shimizu, Y ^{[1
]}

Yamashita, N ^{[1
]}

机构：

[1] Kyushu Inst Technol, Fac Engn, Dept Appl Chem, Kitakyushu, Fukuoka 8048550, Japan

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2000年 / 64卷 / 1-3期

关键词：

perovskite-type oxide; CO2; sensor; NASICON; solid electrolyte;

D O I：

10.1016/S0925-4005(99)00491-8

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Solid-state electrochemical sensor devices combined with sodium super ionic conductor (NASICON: Na1+xZr2SixP3-xO12) discs and perovskite-type oxide electrodes have been developed for the detection of CO2 in the range of 100-2000 ppm. Among the various sensor devices tested, Go-based perovskite-type oxide electrodes were found to show excellent sensing properties to CO2 at 200-300 degrees C. Especially, NdCoO3- and La0.8Ba0.2CoO3-based elements showed the best CO2 sensing properties, i.e., the sensor response (EMF) was almost linear to the logarithm of CO2 concentration in the range between 100 and 2000 ppm, the response time to 500 ppm CO2 was as short as 1-2 min. An open-reference electrode type sensor element, which fitted with NdCoO3 and La0.8Pb0.2CoO3 for sensing and reference electrodes, respectively, showed excellent CO2 sensing properties and hardly affected with oxygen partial pressure. (C) 2000 Elsevier Science S.A. All rights reserved.

引用

页码：102 / 106

页数：5

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