Sensing unit based on ceramic co-firing process, electrochemical gas sensor comprising sensing unit and manufacturing method of sensing unit

Abstract

The invention discloses a sensing unit based on a ceramic co-firing process, an electrochemical gas sensor comprising the sensing unit and a manufacturing method of the sensing unit, relates to the field of electrochemical gas sensors, and is used for solving the problem that a conventional method for manufacturing an electrochemical gas sensor is difficult. A sensing unit based on the ceramic co-firing process comprises a working electrode layer, an electrolytic cell layer, an auxiliary electrode layer and an extraction layer which are sequentially stacked from top to bottom. A first electrolytic cell through hole and a second electrolytic cell through hole constitute an electrolytic cell cavity. A catalytic electrode is electrically connected to a conductive metal of the first through hole. A counter electrode is electrically connected to the conductive metal of a third through hole. The conductive metal of the first through hole, the second through hole and a fourth through hole areelectrically connected. A first leading-out terminal is electrically connected to the conductive metal of the fourth through hole. The second leading-out terminal is electrically connected to the conductive metal of the third through hole. According to the sensing unit based on the ceramic co-firing process, the electrochemical gas sensor comprising the sensing unit, and the manufacturing methodof the sensing unit, different kinds of gas detection are realized by injecting different types of electrolytes, different catalytic electrode materials.

Description

technical field

[0001] The invention belongs to the technical field of electrochemical gas sensors. Background technique

[0002] Electrochemical gas sensors are widely used in gas concentration detection in industrial environments, air quality, and closed environments because of their advantages such as low power consumption and stable output. CITY Company of the United Kingdom, FIGARO Company of Japan, and RAE Company of the United States are world-renowned electrochemical gas sensors. Gas sensor manufacturer, whose products cover the detection of dozens of gas concentrations, almost occupying the entire market in the world's electrochemical gas sensor field.

[0003] At present, electrochemical gas sensors are all manufactured by traditional techniques, and there are problems of difficult manufacturing methods, complex structures, and large volumes. It is difficult to realize the miniaturization and integrated design and manufacture of electrochemical sensors, which limit...

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