High-Performance Limiting Current Oxygen Sensor Comprised of Highly Active La(0.75)Sr(0.25)Cr(0.5)Mn(0.5)O(3) Electrode

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 t...

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Autores principales: Zou, Jie, Lin, Qian, Cheng, Chu, Zhang, Xin, Jin, Qinghui, Jin, Han, Wang, Jinxia, Jian, Jiawen
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6069003/
https://www.ncbi.nlm.nih.gov/pubmed/29973553
http://dx.doi.org/10.3390/s18072155
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author Zou, Jie
Lin, Qian
Cheng, Chu
Zhang, Xin
Jin, Qinghui
Jin, Han
Wang, Jinxia
Jian, Jiawen
author_facet Zou, Jie
Lin, Qian
Cheng, Chu
Zhang, Xin
Jin, Qinghui
Jin, Han
Wang, Jinxia
Jian, Jiawen
author_sort Zou, Jie
collection PubMed
description 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, La(0.75)Sr(0.25)Cr(0.5)Mn(0.5)O(3) (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% CO(2) and H(2)O) 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.
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spelling pubmed-60690032018-08-07 High-Performance Limiting Current Oxygen Sensor Comprised of Highly Active La(0.75)Sr(0.25)Cr(0.5)Mn(0.5)O(3) Electrode Zou, Jie Lin, Qian Cheng, Chu Zhang, Xin Jin, Qinghui Jin, Han Wang, Jinxia Jian, Jiawen Sensors (Basel) Article 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, La(0.75)Sr(0.25)Cr(0.5)Mn(0.5)O(3) (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% CO(2) and H(2)O) 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. MDPI 2018-07-04 /pmc/articles/PMC6069003/ /pubmed/29973553 http://dx.doi.org/10.3390/s18072155 Text en © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Zou, Jie
Lin, Qian
Cheng, Chu
Zhang, Xin
Jin, Qinghui
Jin, Han
Wang, Jinxia
Jian, Jiawen
High-Performance Limiting Current Oxygen Sensor Comprised of Highly Active La(0.75)Sr(0.25)Cr(0.5)Mn(0.5)O(3) Electrode
title High-Performance Limiting Current Oxygen Sensor Comprised of Highly Active La(0.75)Sr(0.25)Cr(0.5)Mn(0.5)O(3) Electrode
title_full High-Performance Limiting Current Oxygen Sensor Comprised of Highly Active La(0.75)Sr(0.25)Cr(0.5)Mn(0.5)O(3) Electrode
title_fullStr High-Performance Limiting Current Oxygen Sensor Comprised of Highly Active La(0.75)Sr(0.25)Cr(0.5)Mn(0.5)O(3) Electrode
title_full_unstemmed High-Performance Limiting Current Oxygen Sensor Comprised of Highly Active La(0.75)Sr(0.25)Cr(0.5)Mn(0.5)O(3) Electrode
title_short High-Performance Limiting Current Oxygen Sensor Comprised of Highly Active La(0.75)Sr(0.25)Cr(0.5)Mn(0.5)O(3) Electrode
title_sort high-performance limiting current oxygen sensor comprised of highly active la(0.75)sr(0.25)cr(0.5)mn(0.5)o(3) electrode
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6069003/
https://www.ncbi.nlm.nih.gov/pubmed/29973553
http://dx.doi.org/10.3390/s18072155
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