CORDLESS SOLID-STATE HYDROGEN SENSOR USING PROTON-CONDUCTOR THICK-FILM

被引：43

作者：

MIURA, N

HARADA, T

SHIMIZU, Y

YAMAZOE, N

机构：

[1] Department of Materials Science and Technology, Graduate School of Engineering Sciences, Kyushu University, Kasuga-shi, Fukuoka-ken

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 1990年 / 1卷 / 1-6期

关键词：

D O I：

10.1016/0925-4005(90)80186-4

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Potentiometric as well as amperometric solid-state gas sensors using a thick film (≈ 10 μm) of proton-conductor have been developed for detecting small amounts of hydrogen in air at room temperature. The sensor elements are composed of the following electrochemical cell: reference (or counter) electrode (Au or Pt) | proton-conductor thick film | sensing electrode (Pt). The thick film is formed on an alumina substrate by applying a paste of antimonic acid-polyvinyl alcohol mixture, mainly by means of a spin-coating method. The electromotive force of the potentiometric sensor varies logarithmically with H2 concentration, while the short-circuit current of the amperometric sensor is found to be proportional to H2 concentration. Both give a 90% response time of about 10 s at 30 °C. © 1990.

引用

页码：125 / 129

页数：5

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