铂修饰LSM电极对ZrO2氧敏特性的影响  

Effect of Pt-modified LSM electrode on oxygen sensing properties of ZrO2

作　　者：周君[1] 张跃[1] 

机构地区：[1]北京航空航天大学材料科学与工程学院,北京100083

出　　处：《功能材料》2007年第A07期2675-2677,共3页Journal of Functional Materials

摘　　要：以固相反应合成La0．7Sr0．3MnO3和YSZ，采用密封材料封装烧结LSM和YSZ，丝网印刷LSM作电极，制备极限电流型氧传感器。在500℃测试氧敏元件极限电流随氧气浓度变化的响应。测试结果表明，LSM电极经Pt修饰后，提高了氧敏元件信号的稳定性，与相同条件制备的Pt电极信号差别不大。La0.7Sr0.3MnO3 as the dense diffusion barrier and YSZ are synthesized by solid-phase reaction, and LSM and YSZ are sealed to make the amperometric oxygen sensor, on which LSM film is screen printed as the electrode. The oxygen sensing response to the changing of the oxygen content are gotten at 500℃. The results show that Pt modification on the LSM electrode improves the signal stability. And the sensing signals of this kind of sensor have few difference with the Pt electrode sensor made in the same condition.

关 键 词：铂修饰 LSM 丝网印刷 氧敏特性 

分 类 号：TP212.2[自动化与计算机技术—检测技术与自动化装置]