Sensing Properties of Solid Electrolyte NOx Sensor Using NASICON and Perovskite‐Type Oxide Electrode

Solid electrolyte‐based electrochemical devices fabricated with Na3Zr2Si2PO12 (NASICON), and perovskite‐type oxide electrodes have been systematically examined. The elements attached with the perovskite‐type oxides [A1−xA'xBO3] (A = La, Nd and Y, A' = Ca and Sr., B = Co, Cr, Fe, Ni, Mn and Ru, x = 0–0.4) exhibited rather good performance for the electromotive force responses which were almost linear to the logarithm of NO or NO2 concentration. Among sensors attached with various electrodes, the device using the NdCrO3 electrode gave the excellent NO sensing properties. © 2023 Institute of Electrical Engineers of Japan. Published by Wiley Periodicals LLC.