Mixed-Potential Ammonia Sensor Based on a Dense Yttria-Stabilized Zirconia Film Manufactured at Room Temperature by Powder Aerosol Deposition
Powder aerosol deposition (often abbreviated as PAD, PADM, or ADM) is a coating method used to obtain dense ceramic films at room temperature. The suitability of this method to obtain ammonia mixed-potential sensors based on an yttria-stabilized zirconia (YSZ) electrolyte that is manufactured using...
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-01-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/24/3/811 |
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| author | Nils Donker Daniela Schönauer-Kamin Ralf Moos |
| author_facet | Nils Donker Daniela Schönauer-Kamin Ralf Moos |
| author_sort | Nils Donker |
| collection | DOAJ |
| description | Powder aerosol deposition (often abbreviated as PAD, PADM, or ADM) is a coating method used to obtain dense ceramic films at room temperature. The suitability of this method to obtain ammonia mixed-potential sensors based on an yttria-stabilized zirconia (YSZ) electrolyte that is manufactured using PAD and a V<sub>2</sub>O<sub>5</sub>–WO<sub>3</sub>–TiO<sub>2</sub> (VWT)-covered electrode is investigated in this study. The sensor characteristics are compared with data from sensors with screen-printed YSZ solid electrolytes. The PAD sensors outperform those in terms of sensitivity with 117 mV/decade NH<sub>3</sub> compared to 88 mV/decade. A variation in the sensor temperature shows that the NH<sub>3</sub> sensitivity strongly depends on the sensor temperature and decreases with higher sensor temperature. Above 560 °C, the characteristic curve shifts from exponential to linear dependency. Variations in the water and the oxygen content in the base gas (usually 10% oxygen, 2% water vapor in nitrogen) reveal a strong dependence of the characteristic curve on the oxygen content. Water vapor concentration variations barely affect the sensor signal. |
| first_indexed | 2024-03-08T03:49:50Z |
| format | Article |
| id | doaj.art-6e799b3359f8476aa808c8e7a8846b9f |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-08T03:49:50Z |
| publishDate | 2024-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-6e799b3359f8476aa808c8e7a8846b9f2024-02-09T15:21:54ZengMDPI AGSensors1424-82202024-01-0124381110.3390/s24030811Mixed-Potential Ammonia Sensor Based on a Dense Yttria-Stabilized Zirconia Film Manufactured at Room Temperature by Powder Aerosol DepositionNils Donker0Daniela Schönauer-Kamin1Ralf Moos2Department of Functional Materials, University of Bayreuth, Universitätsstraße 30, 95440 Bayreuth, GermanyDepartment of Functional Materials, University of Bayreuth, Universitätsstraße 30, 95440 Bayreuth, GermanyDepartment of Functional Materials, University of Bayreuth, Universitätsstraße 30, 95440 Bayreuth, GermanyPowder aerosol deposition (often abbreviated as PAD, PADM, or ADM) is a coating method used to obtain dense ceramic films at room temperature. The suitability of this method to obtain ammonia mixed-potential sensors based on an yttria-stabilized zirconia (YSZ) electrolyte that is manufactured using PAD and a V<sub>2</sub>O<sub>5</sub>–WO<sub>3</sub>–TiO<sub>2</sub> (VWT)-covered electrode is investigated in this study. The sensor characteristics are compared with data from sensors with screen-printed YSZ solid electrolytes. The PAD sensors outperform those in terms of sensitivity with 117 mV/decade NH<sub>3</sub> compared to 88 mV/decade. A variation in the sensor temperature shows that the NH<sub>3</sub> sensitivity strongly depends on the sensor temperature and decreases with higher sensor temperature. Above 560 °C, the characteristic curve shifts from exponential to linear dependency. Variations in the water and the oxygen content in the base gas (usually 10% oxygen, 2% water vapor in nitrogen) reveal a strong dependence of the characteristic curve on the oxygen content. Water vapor concentration variations barely affect the sensor signal.https://www.mdpi.com/1424-8220/24/3/811NH<sub>3</sub> sensorpowder aerosol deposition (PAD)YSZmixed potentialSCR catalyst |
| spellingShingle | Nils Donker Daniela Schönauer-Kamin Ralf Moos Mixed-Potential Ammonia Sensor Based on a Dense Yttria-Stabilized Zirconia Film Manufactured at Room Temperature by Powder Aerosol Deposition Sensors NH<sub>3</sub> sensor powder aerosol deposition (PAD) YSZ mixed potential SCR catalyst |
| title | Mixed-Potential Ammonia Sensor Based on a Dense Yttria-Stabilized Zirconia Film Manufactured at Room Temperature by Powder Aerosol Deposition |
| title_full | Mixed-Potential Ammonia Sensor Based on a Dense Yttria-Stabilized Zirconia Film Manufactured at Room Temperature by Powder Aerosol Deposition |
| title_fullStr | Mixed-Potential Ammonia Sensor Based on a Dense Yttria-Stabilized Zirconia Film Manufactured at Room Temperature by Powder Aerosol Deposition |
| title_full_unstemmed | Mixed-Potential Ammonia Sensor Based on a Dense Yttria-Stabilized Zirconia Film Manufactured at Room Temperature by Powder Aerosol Deposition |
| title_short | Mixed-Potential Ammonia Sensor Based on a Dense Yttria-Stabilized Zirconia Film Manufactured at Room Temperature by Powder Aerosol Deposition |
| title_sort | mixed potential ammonia sensor based on a dense yttria stabilized zirconia film manufactured at room temperature by powder aerosol deposition |
| topic | NH<sub>3</sub> sensor powder aerosol deposition (PAD) YSZ mixed potential SCR catalyst |
| url | https://www.mdpi.com/1424-8220/24/3/811 |
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