An application of (4YSZ)0.93(Fe2O3)0.07 in limiting current oxygen sensor

(4YSZ) 0.93 (Fe 2 O 3 ) 0.07 and 9 mol% Y 2 O 3 stabilized ZrO 2 (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 (Fe 2 O...

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Veröffentlicht in:Scientific reports 2019-04, Vol.9 (1), p.5745-5745, Article 5745
Hauptverfasser: Wang, Xiangnan, Liu, Tao, Yu, Jingkun
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Yu, Jingkun
description (4YSZ) 0.93 (Fe 2 O 3 ) 0.07 and 9 mol% Y 2 O 3 stabilized ZrO 2 (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 (Fe 2 O 3 ) 0.07 dense diffusion barrier and 9YSZ solid electrolyte by Pt sintered-paste method. Influences of temperature ( T ), oxygen concentration ( x (O 2 )) and water vapor pressure ( p (H 2 O)) on sensing characteristics of the limiting current oxygen sensor were investigated. The crystalline structure of (4YSZ) 0.93 (Fe 2 O 3 ) 0.07 and 9YSZ belong to cubic structure with Fm 3 ¯ m . The total conductivity of (4YSZ) 0.93 (Fe 2 O 3 ) 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 effects of T , x (O 2 ) and p (H 2 O) are as follows: Log( I L · T ) depends linearly on 1000/ T , I L depends linearly on x (O 2 ) and I L is not significantly dependent on p (H 2 O).
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subjects 639/166/987
639/301/1005/1009
Conductivity
Humanities and Social Sciences
multidisciplinary
Oxygen
Science
Science (multidisciplinary)
Sensors
Vapor pressure
Water vapor
title An application of (4YSZ)0.93(Fe2O3)0.07 in limiting current oxygen sensor
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