Mixed Potential Type NO x Sensor Based on Stabilized Zirconia and Oxide Electrode

Abstract

A new solid‐state sensor operative at high temperature was designed using stabilized zirconia and an oxide sensing electrode. Among the various oxides examined, was found to be the most excellent material for sensing at 500°C. The EMF values of the sensor were almost linear to the logarithm of concentration with a positive slope for and a negative slope for NO. A, sensing mechanism involving mixed potential was proposed based on the measurements of polarization curves.