Publication Details |
| Category | Text Publication |
| Reference Category | Journals |
| DOI | 10.1016/j.ijhydene.2022.12.302 |
| Title (Primary) | Cost-effective selective hydrogen sensor based on the combination of catalytic spillover effect and impedance measurement |
| Author | Roland, U.; Hebestreit, A.; Taoussanis, A.; Eiserbeck, E.; Holzer, F.
; Wotzka, A.; Wohlrab, S. |
| Source Titel | International Journal of Hydrogen Energy |
| Year | 2023 |
| Department | TUCHEM |
| Volume | 48 |
| Issue | 96 |
| Page From | 37550 |
| Page To | 37562 |
| Language | englisch |
| Topic | T7 Bioeconomy |
| Keywords | Hydrogen sensor; Selectivity; Spillover effect; Impedance spectroscopy; Surface electron donor |
| Abstract | Selective measurement of hydrogen in the natural gas grid as large transport and storage infrastructure is a crucial requirement for establishing a hydrogen economy. Cost-effective sensors must face mainly two critical conditions: (i) absence of oxygen contents capable for ensuring the sensor function and (ii) presence of a large surplus of another reducing gas, methane. The developed Pt/TiO2 sensor is based on the combination of the catalytic spillover effect and an impedance measurement. It allows hydrogen detection in a wide concentration range and it is specific for hydrogen while other gases such as methane or carbon dioxide behave like inert gases. The sensor curve with decreasing relative sensitivity for higher hydrogen concentrations and the temperature dependence of the sensor effect are in agreement with the spillover-based sensor principle, where hydrogen is activated on Pt and then spills over onto the TiO2 where it acts as electron donor. |
| Persistent UFZ Identifier | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=25557 |
| Roland, U., Hebestreit, A., Taoussanis, A., Eiserbeck, E., Holzer, F., Wotzka, A., Wohlrab, S. (2023): Cost-effective selective hydrogen sensor based on the combination of catalytic spillover effect and impedance measurement Int. J. Hydrog. Energy 48 (96), 37550 - 37562 10.1016/j.ijhydene.2022.12.302 |
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