La2CuO4 sensing electrode configuration influence on sensitivity and selectivity for a multifunctional potentiometric gas sensor

Eric R. MacAm; Briggs M. White; Bryan M. Blackburn; Elisabetta Di Bartolomeo; Enrico Traversa; Eric D. Wachsman

doi:10.1016/j.snb.2011.09.012

La₂CuO₄ sensing electrode configuration influence on sensitivity and selectivity for a multifunctional potentiometric gas sensor

Eric R. MacAm, Briggs M. White, Bryan M. Blackburn, Elisabetta Di Bartolomeo, Enrico Traversa, Eric D. Wachsman^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

The effects of electrical contact configuration for La₂CuO ₄ sensing electrodes for a planar-based potentiometric gas sensor were studied in order to further quantify the effects of processing on sensor performance. Five configurations of La₂CuO₄ were used for the sensing electrode. The La₂CuO₄ sensing electrode was screen printed opposite a Pt counter electrode on a tape cast YSZ electrolyte. Three sensors were prepared for each configuration to test repeatability. Each sensor was tested at temperatures from 400 to 700 °C at various concentrations of NO₂, NO, and CO in an environment of 3% O ₂ with a balance of N₂. Results show that these sensors exhibit suitable sensitivity to all the gases tested. More importantly, it was shown that the sensitivity, selectivity/cross-sensitivity, and repeatability of these sensors are dependent on the sensing electrode configuration.

Original language	English (US)
Pages (from-to)	957-963
Number of pages	7
Journal	Sensors and Actuators, B: Chemical
Volume	160
Issue number	1
DOIs	https://doi.org/10.1016/j.snb.2011.09.012
State	Published - Dec 15 2011
Externally published	Yes

Keywords

CO
LaCuO
NO
Potentiometric gas sensor
Processing

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Instrumentation
Condensed Matter Physics
Surfaces, Coatings and Films
Metals and Alloys
Electrical and Electronic Engineering
Materials Chemistry

Access to Document

10.1016/j.snb.2011.09.012

Cite this

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title = "La2CuO4 sensing electrode configuration influence on sensitivity and selectivity for a multifunctional potentiometric gas sensor",

abstract = "The effects of electrical contact configuration for La2CuO 4 sensing electrodes for a planar-based potentiometric gas sensor were studied in order to further quantify the effects of processing on sensor performance. Five configurations of La2CuO4 were used for the sensing electrode. The La2CuO4 sensing electrode was screen printed opposite a Pt counter electrode on a tape cast YSZ electrolyte. Three sensors were prepared for each configuration to test repeatability. Each sensor was tested at temperatures from 400 to 700 °C at various concentrations of NO2, NO, and CO in an environment of 3% O 2 with a balance of N2. Results show that these sensors exhibit suitable sensitivity to all the gases tested. More importantly, it was shown that the sensitivity, selectivity/cross-sensitivity, and repeatability of these sensors are dependent on the sensing electrode configuration.",

keywords = "CO, LaCuO, NO, Potentiometric gas sensor, Processing",

author = "MacAm, {Eric R.} and White, {Briggs M.} and Blackburn, {Bryan M.} and {Di Bartolomeo}, Elisabetta and Enrico Traversa and Wachsman, {Eric D.}",

note = "Funding Information: This material is based upon work supported under a National Science Foundation Graduate Research Fellowship and United States Department of Energy contract DE-FG26-02NT41533 . This work was also partly funded by the Ministry of Foreign Affairs (MAE) of Italy under the frame of the Italy–USA Joint Laboratory on “Nanomaterials for Hydrogen and Sustainable Energy”. The authors would also like to thank Laure Chevallier for valuable discussions. ",

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AU - White, Briggs M.

AU - Blackburn, Bryan M.

AU - Di Bartolomeo, Elisabetta

AU - Traversa, Enrico

AU - Wachsman, Eric D.

N1 - Funding Information: This material is based upon work supported under a National Science Foundation Graduate Research Fellowship and United States Department of Energy contract DE-FG26-02NT41533 . This work was also partly funded by the Ministry of Foreign Affairs (MAE) of Italy under the frame of the Italy–USA Joint Laboratory on “Nanomaterials for Hydrogen and Sustainable Energy”. The authors would also like to thank Laure Chevallier for valuable discussions.

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AB - The effects of electrical contact configuration for La2CuO 4 sensing electrodes for a planar-based potentiometric gas sensor were studied in order to further quantify the effects of processing on sensor performance. Five configurations of La2CuO4 were used for the sensing electrode. The La2CuO4 sensing electrode was screen printed opposite a Pt counter electrode on a tape cast YSZ electrolyte. Three sensors were prepared for each configuration to test repeatability. Each sensor was tested at temperatures from 400 to 700 °C at various concentrations of NO2, NO, and CO in an environment of 3% O 2 with a balance of N2. Results show that these sensors exhibit suitable sensitivity to all the gases tested. More importantly, it was shown that the sensitivity, selectivity/cross-sensitivity, and repeatability of these sensors are dependent on the sensing electrode configuration.

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