Mixed-potential NH3 sensor based on Ce0.8Gd0.2O1.9 solid electrolyte

被引：49
|
作者：
Zhang, Jingjing [1 ]
Zhang, Cheng [1 ]
Xia, Jinfeng [2 ]
Li, Qiang [3 ]
Jiang, Danyu [2 ]
Zheng, Xiaohong [3 ]
机构：
[1] Shanghai Inst Technol, 100 Haiquan Rd, Shanghai 201418, Peoples R China
[2] Chinese Acad Sci, Shanghai Inst Ceram, 1295 Dingxi Rd, Shanghai 200050, Peoples R China
[3] East China Normal Univ, 500 Dongchuan Rd, Shanghai 200241, Peoples R China
来源：
SENSORS AND ACTUATORS B-CHEMICAL | 2017年 / 249卷
关键词：
Ce0.8Gd0.2O1.9; Mixed-potential sensors; Ammonia; WO3; NIO SENSING ELECTRODE; OXIDE FUEL-CELLS; STABILIZED-ZIRCONIA; HIGH-TEMPERATURE; NOX SENSOR; SINTERING TEMPERATURE; AMMONIA SENSOR; GAS SENSORS; PERFORMANCES; HYDROCARBON;
D O I：
10.1016/j.snb.2017.04.035
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Gadolinia-doped ceria (GDC) prepared by the oxalate coprecipitation method was used as an oxygen-ion conducting solid electrolyte for a mixed-potential ammonia gas sensor with a WO3-sensitive electrode. The sensing performance of this sensor was compared with a sensor based on yttria-stabilized zirconia (YSZ) electrolyte. The influence of different oxygen-ion electrolytes on the performance ofthe gas sensor was evaluated. The test results show that the sensor device is much more sensitive (140.44 mV/decade) than the YSZ-based sensor device. Furthermore, the also shows good repeatability and stability. The electrochemical impedance measurements indicate that the GDC-based sensor's high performance may benefit from the high conductivity of GDC. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码：76 / 82
页数：7
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