A solid electrolyte potentiometric CO2 gas sensor composed of lithium phosphate as both the reference and the solid electrolyte materials

被引：12

作者：

Lee, Hyung-Kun ^{[1
]}

Choi, Nak-Jin ^{[1
]}

Moon, Seung Eon ^{[1
]}

Yang, Woo Seok ^{[1
]}

Kim, Jongdae ^{[1
]}

机构：

[1] Elect & Telecommun Res Inst, Convergence Components & Mat Res Lab, Taejon 305700, South Korea

来源：

JOURNAL OF THE KOREAN PHYSICAL SOCIETY | 2012年 / 61卷 / 06期

关键词：

Gas sensor; Solid electrolyte; Carbon dioxide; Potentiometric sensor; FABRICATION;

D O I：

10.3938/jkps.61.938

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A solid electrolyte potentiometric CO2 gas sensor has been considered as a candidate for miniaturization into a micro-sensor form. However, the solid electrolyte potentiometric CO2 gas sensor is composed of three components: a reference, a sensing material, and a solid electrolyte. This study reports the fabrication of a solid electrolyte potentiometric CO2 gas sensor with a native reference material from the solid electrolyte (Li3PO4), which means one component of the sensor can be omitted and the fabrication process can be simplified compared to the process for a conventional solid electrolyte potentiometric CO2 gas sensor. The sensor containing Li3PO4, which acted as the reference material as well as the sensing material, showed a comparable response (75 mV/dec at 500 A degrees C) to CO2 gas when we compared the sensor with a conventional solid electrolyte CO2 gas sensor (73 mV/dec at 500 A degrees C) with a coplanar configuration containing Li2TiO3 as the reference material and Li3PO4 as the solid electrolyte.

引用

页码：938 / 941

页数：4

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