Abstract
The influence of the chemical composition and microstructure such as morphology of the tin-doped indium oxide (ITO) sensing electrode and the types of the solid-state oxygen conducting electrolytes such as yttria or scandia-stabilized zirconia (YSZ or ScSZ) and perovskite-type La 0.85Sr 0.15Ga 0.8Mg 0.2O (3−0.35/2) (LSGM) on the sensing properties of the mixed-potential gas sensors has been investigated. It was found that the sensitivity of the sensor with ScSZ and ITO as the electrolyte and sensing electrode, respectively, decreased although the magnitude of the sensor signal was found to increase as the concentration of tin in the ITO composite increased. The sensor using the spherical ITO particles as the sensing electrode exhibited higher sensitivity than that of the sensor employing the ITO powders with coexisting rod-like and spherical morphologies. The sensitivity of the sensor based on YSZ electrolyte did not show much difference from that of the ScSZ-based sensor. However, the sensor utilizing the perovskite-type oxygen ion conductor (LSGM) displayed much lower sensitivity and much slower response to the test gas than those based on stabilized zirconia.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
