pp. 31-41
S&M867 Research Paper of Special Issue https://doi.org/10.18494/SAM.2012.763 Published: January 11, 2012 Sensing Properties of Impedancemetric Solid-Electrolyte NOx Sensor Using Perovskite-Type Lanthanum Manganite-Based Receptor [PDF] Hong-Chan Cho, Shinya Kuramoto, Satoko Takase, Jeong-Hwan Song and Youichi Shimizu (Received April 7, 2011; Accepted June 16, 2011) Keywords: Impedancemetric, NOx sensor, solid electrolyte, lanthanum manganite
Solid-state impedancemetric NOx sensor devices composed of the perovskite-type oxide (La0.8A0.2MnO3; A = La, Na, K) as a receptor material and a Li1.5Al0.5Ti1.5(PO4)3 (LATP) disc as a solid-electrolyte transducer were investigated for the detection of NOx (NO and NO2) in the range of 100–500 ppm at 400℃. The lanthanum manganite/LATP-based sensor devices showed NOx sensing responses that could be divided into two components of resistance and capacitance. While the sensitivities to NOx were largely affected by the type of receptor material used, the La0.8K0.2MnO3/LATP-based impedancemetric sensor element showed excellent NO sensing properties. FT-IR measurements revealed that the interaction between NO and La0.8K0.2MnO3 was the strongest among the receptor materials.
Corresponding author: Kiyoshi TokoCite this article Hong-Chan Cho, Shinya Kuramoto, Satoko Takase, Jeong-Hwan Song and Youichi Shimizu, Sensing Properties of Impedancemetric Solid-Electrolyte NOx Sensor Using Perovskite-Type Lanthanum Manganite-Based Receptor, Sens. Mater., Vol. 24, No. 1, 2012, p. 31-41. |