新型二氧化硫传感器的制备

Preparation of New Type Sensor for Monitoring SO₂ Gas

摘要: 制成一种新型无参比电极、由NASICON和YSZ2种固体电解质及Na₂SO₄辅助电极构成的二氧化硫传感器。实验结果表明,该传感器对二氧化硫产生Nernst响应。由于这种传感器采用了平面结构,参比电极和工作电极处于相同气氛中,消除了氧气的影响和密封问题,这种结构有利于传感器的微型化和多组元复合传感。

Abstract: A new type SO₂ sensor is constituted by using both NASICON and YSZ electrolytes with Na₂SO₄ auxiliary electrodc.lt is shown that the response of sensor to SO, is Nemstian response. As the sensor is a planar construction and both electrodes are exposed to the same test gas, there is no any need for a separate reference compartment and the effect of O₂ on EMF can be eliminated. It becomes easy that sensor is miniatur-ized and incoporated on the same substrate for sensing several compenents simultaneously. KEY WORDS SO, sensor;NASICON; YSZ solid electrolyte