LAUSR

Mixed potential sensor which is built on Yttria Stabilized Zirconia (YSZ) with a plain planar structure Au/YSZ/Pt has actual benefit among different kinds of NOx sensors. To further sensing abilities, au composites electrodes were taken a research on. The fact that adding YSZ into the Au electrode reduced in air the polarization resistance has been demonstrated by electrochemical impedance spectroscopy. The proposed porous Au–YSZ composite electrodes in a YSZ-based sensor have more positive effect than pure gold electrode based on the excellent performance. The proposed YSZ-based sensor could linearly detect NO2 in the concentration between 50 to 400 ppm with a low detection limit of 20 ppm.