基于特殊形貌NiO电极的混合电位型C3 H6传感器研究

研究了特殊形貌NiO对基于该类敏感电极的混合电位C3 H6传感器的影响，实验数据显示：线型结构NiO敏感电极传感器在600℃下具有最好的响应值，达到了60 mV，其90%的响应和恢复分别为15，25 s。此传感器在600℃对0%～0.05% C3 H6具有较好敏感性能，且响应信号与气体体积分数对数之间有良好的线性关系，其灵敏度达－50.26 mV/decade。经气相催化分析，在400～600℃和0.01% C3 H6下，线型形貌NiO电极的平均气相催化效率最低，为31.4%（其余两种分别为42.7%，52.4%），进而表现最优的传感器性能。

Study of mixed-potential-type C3 H6 sensors based on NiO electrode with special morphology

Effect of NiO sensing electrodes with special morphology on mixed-potential-based C3 H6 sensors is researched,experimental datas show that the best response value that NiO sensitive electrode with line-like morphology sensing reaches 60 mV,90% response and recovery time of the sensor are 15 ,25 s . The sensor shows good sensitivity to 0% ~0. 05% C3 H6 and the response signal has good linear relationship with logarithm of C3 H6 volume fraction at 600℃,and sensitivity reach up to -50. 26 mV/decade. By analysis of vapor phase catalytic,at 400~600℃ and 0. 01% C3H6,average vapor phase catalytic efficiency of line-like NiO electrode is 31. 4%(the others are 42. 7%,52. 4%),thereby presenting the optimal sensor performance.