Development of a novel manganese oxide-clay humidity sensor

被引：26

作者：

Miyazaki, K

Hieda, M

Kato, T

机构：

[1] Department of Chemical Engineering, Faculty of Engineering, Fukuoka University, Jonan-ku, Fukuoka 814-80

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 1997年 / 36卷 / 01期

关键词：

D O I：

10.1021/ie960239h

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

By mixing certain clay mineral samples into finely divided EMD (electrolytic manganese dioxide) and by using the mixtures as the solid electrolyte of a galvanic potential type humidity sensor, which consisted of a Pt/EMD/Cu or AZ system, it was found that the clay minerals exhibited a new function to markedly improve the performance of the EMD sensing element, which otherwise responded only to high-humidity regions. The response time profiles of the galvanic potentials produced by the clay-admired sensor elements were different from the EMD's. It was observed that different effects took place depending on the nature of the additives, and kaolinite and muscovite enhanced the humidity-sensing characteristics of EMD, showing good linearity and fast response. A mechanism for the enhancement of humidity-sensing characteristics was proposed, taking into account the role of interlayer water molecules present in the EMD-additive system.

引用

页码：88 / 91

页数：4

共 13 条

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