Using metal carbonates MCO3 (M = Mg2+, Ca2+, Sr2+ and Ba2+) as Auxiliary Compounds to Prepare the YSZ Based Potentiometric CO2 Sensor

被引：1

作者：

Wang, Guangwei ^{[1
,3
]}

Chen, Hongzhen ^{[2
,3
]}

Wu, Yuanhui ^{[1
]}

机构：

[1] Zunyi Normal Univ, Coll Chem & Chem Engn, Zunyi 563006, Guizhou, Peoples R China

[2] China Univ Geosci Beijing, MOE Key Lab Groundwater Circulat & Environm Evolu, Beijing 100083, Peoples R China

[3] Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol CIGIT, Chongqing 400714, Peoples R China

来源：

INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE | 2020年 / 15卷 / 11期

基金：

中国国家自然科学基金;

关键词：

BaCO3-Li2CO3-Nd2O3; auxiliary sensing compound; YSZ; CO2; sensor; ANION CONDUCTING SOLIDS; DIOXIDE GAS SENSOR; ELECTROCHEMICAL CO2; SENSING PROPERTIES; STABILITY; CATION; ELECTROLYTE; COMBINATION;

D O I：

10.20964/2020.11.73

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Different insoluble carbonates (MgCO3, CaCO3, SrCO3, BaCO3) were introduced into a base material of Li2CO3-Nd2O3, and the formed ternary compounds worked as an auxiliary sensing material in a potentiometric CO2 sensor. This sensor had YSZ and Au as its solid electrolyte and reference electrode, respectively. By detecting the CO2 response with each as-prepared sensor before and after a water vapour treatment, the characteristics of the auxiliary sensing compounds were considered. Experimental results indicated that the sensor prepared by the BaCO3-Li2CO3-Nd2O3 compound exhibited a stable and reproducible response to CO2 gas over a wide range of 271-576802 ppm. Interestingly, this type of sensor worked well even after a 12-h water vapour treatment at 3 MPa. After further investigations, this sensor may potentially be applied for the practical in situ detection of the CO2 concentration in a combustion exhaust gas atmosphere.

引用

页码：11046 / 11057

页数：12

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