Study of YSZ electrolyte inks for preparation of screen-printed mixed-potential sensors for selective detection of NO_x and NH₃

Gita Nematbakhsh Abkenar (1, 2, 3) , Mathilde Rieu (1, 2, 3) , Philippe Breuil (1, 2, 3) , Jean-Paul Viricelle (1, 2, 3)

1 SPIN-ENSMSE - Centre Sciences des Processus Industriels et Naturels
2 LGF-ENSMSE - Laboratoire Georges Friedel
3 PTSI-ENSMSE - Département Procédés de Transformations des Solides et Instrumentation

Among all NO_x reduction approaches, selective catalyst reduction (SCR) system is one the most reliable ways to control NO_x emissions from diesel engine vehicles and trucks. In order to optimize the conversion rates of NO_x and to prevent inducing excessive NH₃ to the air, an NH3 and NO_x sensor is required [1]. In this study, three different types of YSZ ink have been examined to identify the most effective electrolyte for NO_x and NH₃sensing. The results have shown that a home-made ink with YSZ powder shows the best sensitivity towards ammonia without polarization and the highest NO₂/NO signal ratio with polarization current of 25 nA.

Mots clés: Electrolyte; NH₃; Mixed-potential sensor; NO_x; Yttria Stabilized Zirconia

Domaines: Ingénierie de l'environnement; Génie des procédés

Gita Nematbakhsh Abkenar, Mathilde Rieu, Philippe Breuil, Jean-Paul Viricelle. Study of YSZ electrolyte inks for preparation of screen-printed mixed-potential sensors for selective detection of NO_x and NH₃. EUROSENSORS 2017, CMC2; École des Mines de Saint-Étienne, Sep 2017, Paris, France. pp.456, ⟨10.3390/proceedings1040456⟩. ⟨hal-01617536⟩