New Solid Electrolyte Type Ammonia Gas Sensor Applying Praseodymium Ammonium Sulfate Based Auxiliary Sensing Electrode

摘要

A new solid electrolyte type ammonia gas sensor was fabricated by combining the trivalent aluminum cation conducting (Al_(0.2)Zr_(0.8))_((20)/(19))Nb(PO_4)_3 solid electrolyte and the praseodymium ammonium sulfate Pr_2(SO_4)_3·(NH_4)_2SO_4 auxiliary sensing electrode. Since the present sensor showed such a superior sensing performance of quantitative, continuous, and reproducible response with obeying the theoretical Nernst relationship, it is expected to be a practical NH_3 gas sensor.