Development of nanosized lanthanum strontium aluminum manganite as electrodes for potentiometric oxygen sensor

作者：Mullen Max R; Spirig John V; Hoy Julia; Routbort Jules L; Singh Dileep; Dutta Prabir K^*

来源：Sensors and Actuators B: Chemical , 2014, 203: 670-676.

DOI：10.1016/j.snb.2014.07.027

• Electrochemical sensor
• Oxygen
• Potentiometric
• YSZ
• LSM
• High temperature

Nanocrystalline La0.8Sr0.2Al0.9Mn0.1O3 (LSAM) was synthesized by a microwave-assisted citrate method, and characterized by electron microscopy and X-ray diffraction. Electrical behavior of LSAM was investigated by impedance spectroscopy and activation energy of conduction was obtained. Joining of sintered bodies of LSAM and yttria-stabilized tetragonal zirconia polycrystals (YTZP), an extensively studied oxygen ion conducting electrolyte, was examined by isostatic hot pressing methods. Characteristics of the joining region were evaluated with microprobe Raman spectroscopy, and products formed at the interface, primarily strontium zirconate, was confirmed by examination of high temperature chemical reaction between LSAM and YTZP powders. The electrical properties of the LSAM were exploited for development of a high temperature oxygen sensor in which LSAM functioned as the electrode and YTZP as electrolyte.

• 出版日期2014-11