Effects of ZnO Addition on Response of NiO Sensing Electrode for Mixed-Potential-Type Zirconia-based NOx Sensor

摘要：

　　In order to improve the sensing characteristic of mixed-potential-type planar NO sensor with NiO-SE, a series of ZnO (10 wt%, 20 wt%, 50 wt%) were added into NiO.Among the sensor response testing, ZnO was found to give a significant enhancement in NO sensitivity.The electromotive force (EMF) to 700 ppm NO was maximum (22 mV) for the sensor using the 20 wt% ZnO-added NiO-SE at 400 ℃ under 10 vol % O2 with N2 balance.It was speculated that the formation of new Ni0.9Zn0.1O phase and the modification of morphology of the NiO-SE layer by the addition of ZnO were the main contributing factors for the improved NO sensitivity of the senspr.

关键词： Mixed-potential-type gas sensor NO ZnO NiO Triple phase boundary

作者: Ying Chen Feng Xia Jian-zhong Xiao

作者单位: School of Materials Science and Engineering, Huazhong University of Science and Technology, Luoyu Rd 1037, Wuhan, Hubei 430074, PR China

会议类型: 国际会议

会议名称: The Eighth China National Conference on Functional Materials and Applications(第八届中国功能材料及其应用学术会议)

会议地点: 哈尔滨

会议语种:英文

页码: 311-315

在线出版日期: 2013-08-23（万方平台首次上网日期，不代表论文的发表时间）