Solvent Evaporation Rate as a Tool for Tuning the Performance of a Solid Polymer Electrolyte Gas Sensor
Solid polymer electrolytes show their potential to partially replace conventional electrolytes in electrochemical devices. The solvent evaporation rate represents one of many options for modifying the electrode–electrolyte interface by affecting the structural and electrical properties of polymer el...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-11-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/14/21/4758 |
| _version_ | 1797466694256427008 |
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| author | Petr Sedlak Pavel Kaspar Dinara Sobola Adam Gajdos Jiri Majzner Vlasta Sedlakova Petr Kubersky |
| author_facet | Petr Sedlak Pavel Kaspar Dinara Sobola Adam Gajdos Jiri Majzner Vlasta Sedlakova Petr Kubersky |
| author_sort | Petr Sedlak |
| collection | DOAJ |
| description | Solid polymer electrolytes show their potential to partially replace conventional electrolytes in electrochemical devices. The solvent evaporation rate represents one of many options for modifying the electrode–electrolyte interface by affecting the structural and electrical properties of polymer electrolytes used in batteries. This paper evaluates the effect of solvent evaporation during the preparation of solid polymer electrolytes on the overall performance of an amperometric gas sensor. A mixture of the polymer host, solvent and an ionic liquid was thermally treated under different evaporation rates to prepare four polymer electrolytes. A carbon nanotube-based working electrode deposited by spray-coating the polymer electrolyte layer allowed the preparation of the electrode–electrolyte interface with different morphologies, which were then investigated using scanning electron microscopy and Raman spectroscopy. All prepared sensors were exposed to nitrogen dioxide concentration of 0–10 ppm, and the current responses and their fluctuations were analyzed. Electrochemical impedance spectroscopy was used to describe the sensor with an equivalent electric circuit. Experimental results showed that a higher solvent evaporation rate leads to lower sensor sensitivity, affects associated parameters (such as the detection/quantification limit) and increases the limit of the maximum current flowing through the sensor, while the other properties (hysteresis, repeatability, response time, recovery time) change insignificantly. |
| first_indexed | 2024-03-09T18:43:23Z |
| format | Article |
| id | doaj.art-b7cfaf0460a74f1b80e683d971bfb4cb |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-09T18:43:23Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-b7cfaf0460a74f1b80e683d971bfb4cb2023-11-24T06:31:26ZengMDPI AGPolymers2073-43602022-11-011421475810.3390/polym14214758Solvent Evaporation Rate as a Tool for Tuning the Performance of a Solid Polymer Electrolyte Gas SensorPetr Sedlak0Pavel Kaspar1Dinara Sobola2Adam Gajdos3Jiri Majzner4Vlasta Sedlakova5Petr Kubersky6Department of Physics, Faculty of Electrical Engineering and Communications, Brno University of Technology, Technicka 10, 616 00 Brno, Czech RepublicDepartment of Physics, Faculty of Electrical Engineering and Communications, Brno University of Technology, Technicka 10, 616 00 Brno, Czech RepublicDepartment of Physics, Faculty of Electrical Engineering and Communications, Brno University of Technology, Technicka 10, 616 00 Brno, Czech RepublicDepartment of Physics, Faculty of Electrical Engineering and Communications, Brno University of Technology, Technicka 10, 616 00 Brno, Czech RepublicDepartment of Physics, Faculty of Electrical Engineering and Communications, Brno University of Technology, Technicka 10, 616 00 Brno, Czech RepublicDepartment of Physics, Faculty of Electrical Engineering and Communications, Brno University of Technology, Technicka 10, 616 00 Brno, Czech RepublicResearch and Innovation Centre for Electrical Engineering (RICE), Faculty of Electrical Engineering, University of West Bohemia, Univerzitni 8, 301 00 Plzen, Czech RepublicSolid polymer electrolytes show their potential to partially replace conventional electrolytes in electrochemical devices. The solvent evaporation rate represents one of many options for modifying the electrode–electrolyte interface by affecting the structural and electrical properties of polymer electrolytes used in batteries. This paper evaluates the effect of solvent evaporation during the preparation of solid polymer electrolytes on the overall performance of an amperometric gas sensor. A mixture of the polymer host, solvent and an ionic liquid was thermally treated under different evaporation rates to prepare four polymer electrolytes. A carbon nanotube-based working electrode deposited by spray-coating the polymer electrolyte layer allowed the preparation of the electrode–electrolyte interface with different morphologies, which were then investigated using scanning electron microscopy and Raman spectroscopy. All prepared sensors were exposed to nitrogen dioxide concentration of 0–10 ppm, and the current responses and their fluctuations were analyzed. Electrochemical impedance spectroscopy was used to describe the sensor with an equivalent electric circuit. Experimental results showed that a higher solvent evaporation rate leads to lower sensor sensitivity, affects associated parameters (such as the detection/quantification limit) and increases the limit of the maximum current flowing through the sensor, while the other properties (hysteresis, repeatability, response time, recovery time) change insignificantly.https://www.mdpi.com/2073-4360/14/21/4758solid polymer electrolytegas sensornoise spectroscopyionic liquid |
| spellingShingle | Petr Sedlak Pavel Kaspar Dinara Sobola Adam Gajdos Jiri Majzner Vlasta Sedlakova Petr Kubersky Solvent Evaporation Rate as a Tool for Tuning the Performance of a Solid Polymer Electrolyte Gas Sensor Polymers solid polymer electrolyte gas sensor noise spectroscopy ionic liquid |
| title | Solvent Evaporation Rate as a Tool for Tuning the Performance of a Solid Polymer Electrolyte Gas Sensor |
| title_full | Solvent Evaporation Rate as a Tool for Tuning the Performance of a Solid Polymer Electrolyte Gas Sensor |
| title_fullStr | Solvent Evaporation Rate as a Tool for Tuning the Performance of a Solid Polymer Electrolyte Gas Sensor |
| title_full_unstemmed | Solvent Evaporation Rate as a Tool for Tuning the Performance of a Solid Polymer Electrolyte Gas Sensor |
| title_short | Solvent Evaporation Rate as a Tool for Tuning the Performance of a Solid Polymer Electrolyte Gas Sensor |
| title_sort | solvent evaporation rate as a tool for tuning the performance of a solid polymer electrolyte gas sensor |
| topic | solid polymer electrolyte gas sensor noise spectroscopy ionic liquid |
| url | https://www.mdpi.com/2073-4360/14/21/4758 |
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