Synthesis of Perovskite Sr Doped Lanthanide Cobaltites and Ferrites and Application for Oxygen Sensors: A Comparative Study

Cvejin, Katarina; Manjakkal, Libu; Kulawik, Jan; Zaraska, Krzysztof; Szwagierczak, Dorota

Abstract

Perovskites with formula A1-xSrxBO3-δ (A = La, Nd, Sm; B = Fe or Co) have been synthesized by solid state reaction method and have been studied as materials for oxygen sensor application. The obtained powders were used for making thick film pastes that were later screen printed as sensing electrodes on yttria stabilized zirconia (YSZ) substrates. Sensing electrodes were exposed to low concentration oxygen gas at elevated temperatures. Measurements of the electromotive force of electrochemical cells with the fabricated electrodes were carried out as a function of temperature. The investigation indicated that all of the synthesized materials show Nernstian behavior in a relatively wide temperature range, although the most promising for oxygen electrochemical sensor application is strontium doped samarium cobaltite.

• Journal Article Type: Article
• Acceptance Date: Apr 1, 2014
• Publication Date: 2014
• Deposit Date: Jul 23, 2022
• Journal: Key Engineering Materials
• Print ISSN: 1013-9826
• Publisher: Trans Tech Publications
• Peer Reviewed: Peer Reviewed
• Volume: 605
• Pages: 483-486
• DOI: https://doi.org/10.4028/www.scientific.net/kem.605.483
• Keywords: Perovskite Oxide, Potentiometric Oxygen Sensor, Thick Film Electrochemical Cell
• Public URL: http://researchrepository.napier.ac.uk/Output/2891719