Influence of process parameters on the sensitivity of an amperometeric NO2 sensor with La0.75Sr0.25Cr0.5Mn0.5O3−δ sensing electrode prepared by the impregnation method

Impedancemetric NO2Sensor Based on CoCrFeO4Sensing Electrode and La9.4Ba0.6Si5.9W0.1O26.8Electrolyte with Phase Angle as Response Signals

“…They have been studied because they can maintain good performance, such as high sensitivity, fast response rate, and good gas selectivity at high working temperatures (873 K-1173 K). Sensors are divided into three types based on different testing principles, mixed-potential, [8][9][10][11][12][13] amperometric, [14][15][16][17][18][19][20][21] and impedancemetric. [22][23][24][25][26][27][28][29][30][31][32][33][34] Impedancemetric NO 2 sensors obtain the AC impedance spectrum under different NO 2 concentrations at a certain temperature and frequency, and the obtained total impedance is linearly related to NO 2 concentrations.…”

A GdAlO3 Perovskite Oxide Electrolyte-Based NOx Solid-State Sensor

“…17 investigated the Pt/La 10 Si 5 NbO 27.5 (LSNO)/NiO sensor and showed that the sensor had a very high sensitivity to NO 2 at the operating temperature of 450–600 °C. Dai et al 18. also fabricated an amperometric-type NO 2 sensor using Ce 0.9 Gd 0.1 O 1.95 (CGO) substrated with La 0.75 Sr 0.25 Cr 0.5 Mn 0.5 O 3−δ (LSCM) sensing electrode, which gave the high NO 2 sensitivity of 134 nA/ppm at 500 °C.…”