【作者】：Han Zhang,Ruize Sun,Peng Sun,Xishuang Liang*,Geyu Lu
【题目】：NASICON-based H-2 Sensor Using CoCrMnO4 Insensitive Reference Electrode and Buried Au Sensing Electrode
【关键词】：H-2 sensor, Sodium super ionic conductor(NASICON),Mixed potential,Buried electrode,Insensitive RE
【版面信息】：Chemical Research in Chinese University 2014，30 (6): 965-970
摘要:
This work focuses on the H2sensing performance of the sensor with buried Au sensing electrode and spinel- type oxide CoCrMnO4insensitive reference electrode within sodium super ionic conductor(NASICON) film. The sensor showed the highest response to H2gas on the insensitive material sintering at 800℃. Compared with those of the traditional structure device, the sensitivity and selectivity of the sensor using buried sensing electrode were greatly improved, giving a response of -177 mV in 9x10(-5) g/L H2, which was about 3.5 times higher than that of sensors with traditional structure. Moreover, the Delta V value of the sensing device exhibited linear relationship to the logarithm of H2concentration and the sensitivity(slope) was -135 mV/decade. A sensing mechanism related to the mixed potential was proposed for the present sensor.
