新型二氧化硫傳感器的制備

Preparation of New Type Sensor for Monitoring SO₂ Gas

摘要: 制成一種新型無參比電極、由NASICON和YSZ2種固體電解質及Na₂SO₄輔助電極構成的二氧化硫傳感器。實驗結果表明,該傳感器對二氧化硫產生Nernst響應。由于這種傳感器采用了平面結構,參比電極和工作電極處于相同氣氛中,消除了氧氣的影響和密封問題,這種結構有利于傳感器的微型化和多組元復合傳感。

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