Potentiometric NO2 Sensors Based on Thin Stabilized Zirconia Electrolytes and Asymmetric (La0.8Sr0.2)0.95MnO3 Electrodes
Here we report on a new architecture for potentiometric NO2 sensors that features thin 8YSZ electrolytes sandwiched between two porous (La0.8Sr0.2)0.95MnO3 (LSM95) layers—one thick and the other thin—fabricated by the tape casting and co-firing techniques. Measurements of their sensing characteristi...
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MDPI AG
2015-07-01
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| Series: | Sensors |
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| Online Access: | http://www.mdpi.com/1424-8220/15/7/17558 |
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doaj-3f646c75ab394860bac658fb1d32ea122020-11-25T01:29:27ZengMDPI AGSensors1424-82202015-07-01157175581757110.3390/s150717558s150717558Potentiometric NO2 Sensors Based on Thin Stabilized Zirconia Electrolytes and Asymmetric (La0.8Sr0.2)0.95MnO3 ElectrodesJie Zou0Yangong Zheng1Junliang Li2Zhongliang Zhan3Jiawen Jian4Gas Sensors & Sensing Technology Laboratory, College of Information Science and Engineering, Ningbo University, Ningbo 315211, ChinaGas Sensors & Sensing Technology Laboratory, College of Information Science and Engineering, Ningbo University, Ningbo 315211, ChinaCAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences (SICCAS), Shanghai 200050, ChinaCAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences (SICCAS), Shanghai 200050, ChinaGas Sensors & Sensing Technology Laboratory, College of Information Science and Engineering, Ningbo University, Ningbo 315211, ChinaHere we report on a new architecture for potentiometric NO2 sensors that features thin 8YSZ electrolytes sandwiched between two porous (La0.8Sr0.2)0.95MnO3 (LSM95) layers—one thick and the other thin—fabricated by the tape casting and co-firing techniques. Measurements of their sensing characteristics show that reducing the porosity of the supporting LSM95 reference electrodes can increase the response voltages. In the meanwhile, thin LSM95 layers perform better than Pt as the sensing electrode since the former can provide higher response voltages and better linear relationship between the sensitivities and the NO2 concentrations over 40–1000 ppm. The best linear coefficient can be as high as 0.99 with a sensitivity value of 52 mV/decade as obtained at 500 °C. Analysis of the sensing mechanism suggests that the gas phase reactions within the porous LSM95 layers are critically important in determining the response voltages.http://www.mdpi.com/1424-8220/15/7/17558NO2sensorslanthanum strontium manganiteyttria-stabilized zirconiagas-phase reaction |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Jie Zou Yangong Zheng Junliang Li Zhongliang Zhan Jiawen Jian |
| spellingShingle |
Jie Zou Yangong Zheng Junliang Li Zhongliang Zhan Jiawen Jian Potentiometric NO2 Sensors Based on Thin Stabilized Zirconia Electrolytes and Asymmetric (La0.8Sr0.2)0.95MnO3 Electrodes Sensors NO2 sensors lanthanum strontium manganite yttria-stabilized zirconia gas-phase reaction |
| author_facet |
Jie Zou Yangong Zheng Junliang Li Zhongliang Zhan Jiawen Jian |
| author_sort |
Jie Zou |
| title |
Potentiometric NO2 Sensors Based on Thin Stabilized Zirconia Electrolytes and Asymmetric (La0.8Sr0.2)0.95MnO3 Electrodes |
| title_short |
Potentiometric NO2 Sensors Based on Thin Stabilized Zirconia Electrolytes and Asymmetric (La0.8Sr0.2)0.95MnO3 Electrodes |
| title_full |
Potentiometric NO2 Sensors Based on Thin Stabilized Zirconia Electrolytes and Asymmetric (La0.8Sr0.2)0.95MnO3 Electrodes |
| title_fullStr |
Potentiometric NO2 Sensors Based on Thin Stabilized Zirconia Electrolytes and Asymmetric (La0.8Sr0.2)0.95MnO3 Electrodes |
| title_full_unstemmed |
Potentiometric NO2 Sensors Based on Thin Stabilized Zirconia Electrolytes and Asymmetric (La0.8Sr0.2)0.95MnO3 Electrodes |
| title_sort |
potentiometric no2 sensors based on thin stabilized zirconia electrolytes and asymmetric (la0.8sr0.2)0.95mno3 electrodes |
| publisher |
MDPI AG |
| series |
Sensors |
| issn |
1424-8220 |
| publishDate |
2015-07-01 |
| description |
Here we report on a new architecture for potentiometric NO2 sensors that features thin 8YSZ electrolytes sandwiched between two porous (La0.8Sr0.2)0.95MnO3 (LSM95) layers—one thick and the other thin—fabricated by the tape casting and co-firing techniques. Measurements of their sensing characteristics show that reducing the porosity of the supporting LSM95 reference electrodes can increase the response voltages. In the meanwhile, thin LSM95 layers perform better than Pt as the sensing electrode since the former can provide higher response voltages and better linear relationship between the sensitivities and the NO2 concentrations over 40–1000 ppm. The best linear coefficient can be as high as 0.99 with a sensitivity value of 52 mV/decade as obtained at 500 °C. Analysis of the sensing mechanism suggests that the gas phase reactions within the porous LSM95 layers are critically important in determining the response voltages. |
| topic |
NO2 sensors lanthanum strontium manganite yttria-stabilized zirconia gas-phase reaction |
| url |
http://www.mdpi.com/1424-8220/15/7/17558 |
| work_keys_str_mv |
AT jiezou potentiometricno2sensorsbasedonthinstabilizedzirconiaelectrolytesandasymmetricla08sr02095mno3electrodes AT yangongzheng potentiometricno2sensorsbasedonthinstabilizedzirconiaelectrolytesandasymmetricla08sr02095mno3electrodes AT junliangli potentiometricno2sensorsbasedonthinstabilizedzirconiaelectrolytesandasymmetricla08sr02095mno3electrodes AT zhongliangzhan potentiometricno2sensorsbasedonthinstabilizedzirconiaelectrolytesandasymmetricla08sr02095mno3electrodes AT jiawenjian potentiometricno2sensorsbasedonthinstabilizedzirconiaelectrolytesandasymmetricla08sr02095mno3electrodes |
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