Planar impedancemetric NO sensor with thick film perovskite electrodes based on samarium cobaltite

Cvejin, K., Manjakkal, L. , Kulawik, J., Zaraska, K. and Szwagierczak, D. (2015) Planar impedancemetric NO sensor with thick film perovskite electrodes based on samarium cobaltite. Electroanalysis, 27(3), pp. 760-769. (doi:10.1002/elan.201400602)

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Abstract

Impedancemetric NO sensors were fabricated, comprising yttria stabilized zirconia disc with thick film Sm0.9Sr0.1CoO3−δ electrodes of different design. Impedance measurements were performed at 600–800 °C for frequencies 0.01 Hz–100 kHz, in gas mixtures with 0–400 ppm of NO. The smaller arc on Nyquist plots can be associated with solid electrolyte-electrode interfacial phenomena, while the bigger one to the perovskite electrode reactions. As NO concentration increases, the bigger arc decreases and its maximum shifts toward higher frequencies. Both the sensitivity and the applicable NO concentration range were found to be dependent on the sensor design, temperature and chosen frequency.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Manjakkal, Dr Libu
Authors: Cvejin, K., Manjakkal, L., Kulawik, J., Zaraska, K., and Szwagierczak, D.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:Electroanalysis
Publisher:Wiley
ISSN:1040-0397
ISSN (Online):1521-4109
Published Online:12 February 2015

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