کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
746808 | 1462237 | 2014 | 5 صفحه PDF | دانلود رایگان |
• La5/3Sr1/3NiO4–YSZ composite powders have been synthesized by a simple method.
• The effect of YSZ addition on the electrode microstructure and performance was investigated.
• The effect of sintering temperature on the electrode microstructure and performance was investigated.
The microstructure of a potentiometric NOx sensor’s electrodes considerably affects the sensor performance. In the present paper, nanometric La5/3Sr1/3NiO4 and different YSZ concentrations (5 wt%, 10 wt% and 20 wt%) composite powders were synthesized with microwave-assisted complex-gel auto-combustion method for fabricating NOx sensor electrodes. The sensor electrodes were sintered at 1000 °C, 1100 °C and 1200 °C respectively to obtain a variety of electrode morphology. The electrode porosity decreased with the increased YSZ addition. The sintering temperatures have effect on the porosity and distribution. All the sensors could produce a steady-state response voltage at the lower temperatures. Sensor fabricated with 10 wt% YSZ additional composites and sintered at 1000 °C exhibited the biggest response to NO at 400 °C.
Journal: Solid-State Electronics - Volume 95, May 2014, Pages 23–27