The NO2 response of solid electrolyte sensors made using nano-sized LaFeO3 electrodes

Jong Won Yoon; Maria Luisa Grilli; Elisabetta Di Bartolomeo; Riccardo Polini; Enrico Traversa

doi:10.1016/S0925-4005(01)00594-9

The NO₂ response of solid electrolyte sensors made using nano-sized LaFeO₃ electrodes

Jong Won Yoon, Maria Luisa Grilli, Elisabetta Di Bartolomeo, Riccardo Polini, Enrico Traversa^*

^*Corresponding author for this work

Research output: Contribution to journal › Conference article › peer-review

123 Scopus citations

Abstract

Electrochemical cells were prepared coupling an oxygen ionic conductor (Y₂O₃-stabilized ZrO₂:YSZ) with a semiconducting oxide (LaFeO₃) electrode. Pt was used as the counter electrode. These devices showed promising NO₂ sensing performance at 400 and 450°C. The electromotive force (EMF) value of the (Pt)LaFeO₃/YSZ/Pt sensor increased in NO₂ atmospheres with a fast response time. The polarization curves showed non-linear behavior in air and NO₂. The non-linearity was attributed to the potential drop at the electrode interfaces. Electrochemical impedance spectroscopy (EIS) analysis of the devices showed that the resistance and reactance at the electrolyte/electrode interface decreased upon introduction of 100 ppm NO₂ in air, because of a lower electrode overvoltage.

Original language	English (US)
Pages (from-to)	483-488
Number of pages	6
Journal	Sensors and Actuators, B: Chemical
Volume	76
Issue number	1-3
DOIs	https://doi.org/10.1016/S0925-4005(01)00594-9
State	Published - Jun 1 2001
Externally published	Yes
Event	Proceeding of the 8th International Meeting on Chemical Sensors - Basel, Switzerland Duration: Jul 2 2000 → Jul 5 2000

Keywords

Electrochemical impedance spectroscopy
Electrochemical sensors
LaFeO
Mixed potential
NO
Yttria-stabilized zirconia

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/S0925-4005(01)00594-9

Cite this

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title = "The NO2 response of solid electrolyte sensors made using nano-sized LaFeO3 electrodes",

abstract = "Electrochemical cells were prepared coupling an oxygen ionic conductor (Y2O3-stabilized ZrO2:YSZ) with a semiconducting oxide (LaFeO3) electrode. Pt was used as the counter electrode. These devices showed promising NO2 sensing performance at 400 and 450°C. The electromotive force (EMF) value of the (Pt)LaFeO3/YSZ/Pt sensor increased in NO2 atmospheres with a fast response time. The polarization curves showed non-linear behavior in air and NO2. The non-linearity was attributed to the potential drop at the electrode interfaces. Electrochemical impedance spectroscopy (EIS) analysis of the devices showed that the resistance and reactance at the electrolyte/electrode interface decreased upon introduction of 100 ppm NO2 in air, because of a lower electrode overvoltage.",

keywords = "Electrochemical impedance spectroscopy, Electrochemical sensors, LaFeO, Mixed potential, NO, Yttria-stabilized zirconia",

author = "Yoon, {Jong Won} and Grilli, {Maria Luisa} and Bartolomeo, {Elisabetta Di} and Riccardo Polini and Enrico Traversa",

year = "2001",

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doi = "10.1016/S0925-4005(01)00594-9",

language = "English (US)",

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pages = "483--488",

journal = "Sensors and Actuators, B: Chemical",

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note = "Proceeding of the 8th International Meeting on Chemical Sensors ; Conference date: 02-07-2000 Through 05-07-2000",

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T1 - The NO2 response of solid electrolyte sensors made using nano-sized LaFeO3 electrodes

AU - Yoon, Jong Won

AU - Grilli, Maria Luisa

AU - Bartolomeo, Elisabetta Di

AU - Polini, Riccardo

AU - Traversa, Enrico

PY - 2001/6/1

Y1 - 2001/6/1

N2 - Electrochemical cells were prepared coupling an oxygen ionic conductor (Y2O3-stabilized ZrO2:YSZ) with a semiconducting oxide (LaFeO3) electrode. Pt was used as the counter electrode. These devices showed promising NO2 sensing performance at 400 and 450°C. The electromotive force (EMF) value of the (Pt)LaFeO3/YSZ/Pt sensor increased in NO2 atmospheres with a fast response time. The polarization curves showed non-linear behavior in air and NO2. The non-linearity was attributed to the potential drop at the electrode interfaces. Electrochemical impedance spectroscopy (EIS) analysis of the devices showed that the resistance and reactance at the electrolyte/electrode interface decreased upon introduction of 100 ppm NO2 in air, because of a lower electrode overvoltage.

AB - Electrochemical cells were prepared coupling an oxygen ionic conductor (Y2O3-stabilized ZrO2:YSZ) with a semiconducting oxide (LaFeO3) electrode. Pt was used as the counter electrode. These devices showed promising NO2 sensing performance at 400 and 450°C. The electromotive force (EMF) value of the (Pt)LaFeO3/YSZ/Pt sensor increased in NO2 atmospheres with a fast response time. The polarization curves showed non-linear behavior in air and NO2. The non-linearity was attributed to the potential drop at the electrode interfaces. Electrochemical impedance spectroscopy (EIS) analysis of the devices showed that the resistance and reactance at the electrolyte/electrode interface decreased upon introduction of 100 ppm NO2 in air, because of a lower electrode overvoltage.

KW - Electrochemical impedance spectroscopy

KW - Electrochemical sensors

KW - LaFeO

KW - Mixed potential

KW - NO

KW - Yttria-stabilized zirconia

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