A6.4 - Novel mixed potential sensor device to compare two gas compartments and to determine directly the conversion of an automotive catalyst
- AMA Conferences 2017
2017-05-30 - 2017-06-01
- Proceedings Sensor 2017
- A6 - Gas Sensors III
- T. Ritter, G. Hagen, R. Moos - University of Bayreuth (Germany)
- 121 - 124
In this work, a novel sensor device is developed. It enables to compare two gas compartments electrochemically by applying the mixed potential sensing principle. Thereby, disadvantages that come along with the usually-used half-cell setups like indirect heating, complicated manufacturing and only destructive dismantling of sample and sealing are overcome. The device bases on an yttria-stabilized zirconia disc that is equipped with an integrated heater to provide a hot area in the center for sensing while at the same time it is cold enough at the outer radius for contacting with a polymer sealing (Oring). As an example for its functionality, the gas mixtures up- and downstream of a catalyst were compared, while the sensor voltage orrelates well with catalyst conversion.