Potentiometric NO2 Sensors Based on Thin Stabilized Zirconia Electrolytes and Asymmetric (La0.8Sr0.2)0.95MnO3 Electrodes

Zou, Jie; Zheng, Yangong; Li, Junliang; Zhan, Zhongliang; Jian, Jiawen

doi:10.3390/s150717558

Cited by 10 publications

(8 citation statements)

References 33 publications

(37 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Reduction of NO 2 is taking place at the reference electrode. However, according to similar potentiometric sensors, NO 2 is not expected to affect the reference electrode performance or the overall sensor response. − …”

Section: Resultsmentioning

confidence: 99%

Surface Functionalization with Ni of Fe_0.7Cr_1.3O₃/8YSZ Electrode in a Potentiometric Sensor To Selectively Detect C₂H₄

Toldrá‐Reig

Serra

2018

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

This work presents a multidevice potentiometric sensor consisting of Fe0.7Cr1.3O3/8YSZ//8YSZ//Pt to detect selectively C2H4 with a low cross-sensitivity to CO in diesel exhaust gases. The device has been designed as a multisensor to measure up to four channels at the same time. A dense 8YSZ disk is employed as oxide-ion conducting electrolyte where four rectangular-shape working electrodes (Fe0.7Cr1.3O3/8YSZ) are screen-printed in one face while one common cross-shape reference electrode (LSM/8YSZ) is screen printed in the back face. Two major improvements are proposed in this work: first, change the reference electrode from state-of-the-art Pt to LSM/8YSZ, inexpensive and more active to oxygen. And second, increase the catalytic activity of the working electrode to improve the response of the sensor under wet conditions. The surface activation by nickel and ruthenium nanoparticles deposition enables reduction of the cross-sensitivity toward CO even in wet atmospheres. Ni nanoparticles selectively boost the electrochemically driven oxidation to C2H4 with respect to CO oxidation, as inferred by impedance spectroscopy analysis.

show abstract

Section: Resultsmentioning

confidence: 99%

Surface Functionalization with Ni of Fe_0.7Cr_1.3O₃/8YSZ Electrode in a Potentiometric Sensor To Selectively Detect C₂H₄

Toldrá‐Reig

Serra

2018

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

show abstract

“…Carbon (Cancarb, Medicine Hat, AB, Canada) powder was used to form diffusion hole and diffusion chamber. Firstly, the 8YSZ tape was home-fabricated by tape casting, the detail process has been reported in previous paper [17] and supplemented. In this paper, the blade height is 600 μm, after drying, the thickness of green tape was about 200 μm.…”

Section: Methodsmentioning

confidence: 99%

High-Performance Limiting Current Oxygen Sensor Comprised of Highly Active La0.75Sr0.25Cr0.5Mn0.5O3 Electrode

Zou

Lin

Cheng

et al. 2018

Sensors

Self Cite

View full text Add to dashboard Cite

Zirconia-based limiting current oxygen sensor gains considerable attention, due to its high-performance in improving the combustion efficiency of fossil fuels and reducing the emission of exhaust gases. Nevertheless, the Pt electrode is frequently used in the oxygen sensor, therefore, it restrains the broader application due to the high cost. Quite recently, La0.75Sr0.25Cr0.5Mn0.5O3 (LSCM) has been reported to be highly active to catalyze oxygen reduction. Herein, with the intention of replacing the frequently used Pt, we studied the practicability of adapting the LSCM to zirconia-based limiting current oxygen sensor. Through comparing the electrocatalytic activity of LSCM and Pt, it is confirmed that LSCM gave analogous oxygen reactivity with that of the Pt. Then, limiting the current oxygen sensors comprised of LSCM or Pt are fabricated and their sensing behavior to oxygen in the range of 2–25% is evaluated. Conclusively, quick response/recovery rate (within 7s), linear relationship, and high selectivity (against 5% CO2 and H2O) in sensing oxygen are observed for the sensors, regardless of the sensing materials (LSCM or Pt) that are used in the sensor. Particularly, identical sensing characteristics are observed for the sensors consisting of LSCM or Pt, indicating the practicability of replacing the Pt electrode by adapting the LSCM electrode to future zirconia-based oxygen sensors.

show abstract

“…Despite the fact that NO 2 presence could compromise the equilibrium achieved at the reference electrode for oxygen reduction, this is not expected according to previous reports on similar potentiometric devices. 60,61 NO x sensors employing LSM as electrode has a particular configuration: LSM is employed in both electrodes but one of them is thicker 62 or denser. [63][64][65] This difference of thickness or density have a critical role in the sensor performance.…”

Section: Anodic Reactionsmentioning

confidence: 99%

Influence of the Solid-Electrolyte Ionic Material in a Potentiometric Sensor for Ethylene Detection

Toldrá‐Reig¹,

Pastor²,

Serra³

2019

J. Electrochem. Soc.

View full text Add to dashboard Cite

Potentiometric sensors based on metal oxides as electrodes and 8YSZ as electrolyte at 550°C can provide selective response to C 2 H 4 with low cross-sensitivity toward CO, H 2 O, C 14 H 10 and C 11 H 10 . The target of the present work is to evaluate the influence of the material used as electrolyte, the electrolyte thickness and the working temperature to check the effect of these parameters on the response to C 2 H 4 . After surface functionalization via Ni nanoparticle deposition onto the working electrode to improve the sensor performance, the effect of 8YSZ electrolyte thickness (from 0.1 to 1.2 mm) on the sensor response was studied. The best performance was achieved with the thinner electrolyte (0.1 mm) in terms of selectivity to C 2 H 4 and low cross-sensitivity toward CO. In second place, Ce 0.8 Gd 0.2 0 2-δ (CGO) and scandium-stabilized zirconia (ScSZ) oxide-ion conductors were tested as an alternative to 8YSZ to operate at lower temperatures. ScSZ and CGO based-devices provided promising sensing performance at 450°C and C 2 H 4 concentrations below 100 ppm in dry conditions upon functionalization of the working electrode with Ni nanoparticles. At 550°C, both electrolyte materials show a selective response to C 2 H 4 with low cross-sensitivity toward CO even in wet conditions or in presence of polyaromatics.

show abstract

Potentiometric NO2 Sensors Based on Thin Stabilized Zirconia Electrolytes and Asymmetric (La0.8Sr0.2)0.95MnO3 Electrodes

Cited by 10 publications

References 33 publications

Surface Functionalization with Ni of Fe_0.7Cr_1.3O₃/8YSZ Electrode in a Potentiometric Sensor To Selectively Detect C₂H₄

Surface Functionalization with Ni of Fe_0.7Cr_1.3O₃/8YSZ Electrode in a Potentiometric Sensor To Selectively Detect C₂H₄

High-Performance Limiting Current Oxygen Sensor Comprised of Highly Active La0.75Sr0.25Cr0.5Mn0.5O3 Electrode

Influence of the Solid-Electrolyte Ionic Material in a Potentiometric Sensor for Ethylene Detection

Contact Info

Product

Resources

About

Potentiometric NO2 Sensors Based on Thin Stabilized Zirconia Electrolytes and Asymmetric (La0.8Sr0.2)0.95MnO3 Electrodes

Cited by 10 publications

References 33 publications

Surface Functionalization with Ni of Fe0.7Cr1.3O3/8YSZ Electrode in a Potentiometric Sensor To Selectively Detect C2H4

Surface Functionalization with Ni of Fe0.7Cr1.3O3/8YSZ Electrode in a Potentiometric Sensor To Selectively Detect C2H4

High-Performance Limiting Current Oxygen Sensor Comprised of Highly Active La0.75Sr0.25Cr0.5Mn0.5O3 Electrode

Influence of the Solid-Electrolyte Ionic Material in a Potentiometric Sensor for Ethylene Detection

Contact Info

Product

Resources

About

Surface Functionalization with Ni of Fe_0.7Cr_1.3O₃/8YSZ Electrode in a Potentiometric Sensor To Selectively Detect C₂H₄

Surface Functionalization with Ni of Fe_0.7Cr_1.3O₃/8YSZ Electrode in a Potentiometric Sensor To Selectively Detect C₂H₄