【作者】：Liang Xishuang, Zhong Tiegang,Guan Hesong, Liu Fengmin, Lu Geyu,Quan Baofu*
【题目】：Ammonia sensor based on NASICON and Cr2O3 electrode
【关键词】：NH3,NASICON,Cr2O3,Gas sensor
【版面信息】：Sensors and Actuators B: Chemical 136 (2009) 479-483
摘要:
A compact tubular sensor based on NASICON (sodium super ionic conductor) and porous Cr2O3 sensing electrode was designed for the detection of ammonia. The sensor gave excellent sensing properties to 50-500 ppm ammonia in air at 250-450℃. The EMF value of the sensor was almost proportional to the logarithm of ammonia concentration, the sensitivity (slope) was -89 mV/decade at 350℃. It was also seen that the sensor showed a good selectivity to ammonia, and an excellent resistance to water vapor, The sensor had speedy response kinetics to ammonia, the 90% response time to 50 ppm ammonia was 30 s, and the recovery time was 60 s
