Influence of polarization time and polarization current of Pt|YSZ-based NO sensors utilizing the pulsed polarization when applying constant charge

Title data

Donker, Nils ; Ruchets, Anastasiya ; Schönauer-Kamin, Daniela ; Zosel, Jens ; Guth, Ulrich ; Moos, Ralf:
Influence of polarization time and polarization current of Pt|YSZ-based NO sensors utilizing the pulsed polarization when applying constant charge.
In: Sensors and Actuators B: Chemical. Vol. 290 (2019) . - pp. 28-33.
ISSN 0925-4005
DOI: https://doi.org/10.1016/j.snb.2019.03.060

Project information

Abstract in another language

A Pt-YSZ sensor was operated in the pulsed polarization mode. In contrast to previous studies, it was polarized with a constant charge. The polarization currents were varied. After polarization, it was self-discharged. The associated voltages during polarization and self-discharge are clearly NO-dependent in both processes. Adding NO results in higher voltages during polarization and faster discharge. In addition, it could be observed that the final values of the discharge curves after certain time depend on the NO concentration and not on the polarization current. This observation may shorten the polarization and therefore the cycle times and thus lead to a faster sensor response.