文章基本信息

标题：An application of (4YSZ) 0.93 (Fe 2 O 3 ) 0.07 in limiting current oxygen sensor
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作者：Xiangnan Wang ; Tao Liu ; Jingkun Yu 等
期刊名称：Scientific Reports
电子版ISSN：2045-2322
出版年度：2019
卷号：9
期号：1
页码：1-8
DOI：10.1038/s41598-019-42266-y
出版社：Springer Nature
摘要：(4YSZ)0.93(Fe2O3)0.07 and 9mol% Y2O3 stabilized ZrO2 (9YSZ) were synthesized by co-precipitation method and their crystalline structure, microstructure, electronic conductivity, total conductivity were characterized. A limiting current oxygen sensor was assembled with (4YSZ)0.93(Fe2O3)0.07 dense difusion barrier and 9YSZ solid electrolyte by Pt sintered-paste method. Infuences of temperature (T), oxygen concentration (x(O2)) and water vapor pressure (p(H2O)) on sensing characteristics of the limiting current oxygen sensor were investigated. The crystalline structure of (4YSZ)0.93(Fe2O3)0.07 and 9YSZ belong to cubic structure with Fm3m. The total conductivity of (4YSZ)0.93(Fe2O3)0.07 is higher than that of 9YSZ and the electronic and total conductivities of the samples meet the linear relationship with 1000/T. The limiting current oxygen sensor exhibits excellent sensing characteristics under test conditions. The efects of T, x(O2) and p(H2O) are as follows: Log(IL·T) depends linearly on 1000/T, IL depends linearly on x(O2) and IL is not signifcantly dependent on p(H2O).