Next Article in Journal
Integrating Cyber-Physical Systems in a Component-Based Approach for Smart Homes
Next Article in Special Issue
Research on a Fast-Response Thermal Conductivity Sensor Based on Carbon Nanotube Modification
Previous Article in Journal
Designing Interactive Experiences for Children with Cochlear Implant
Previous Article in Special Issue
Enhanced Hydrogen Detection Based on Mg-Doped InN Epilayer
Open AccessArticle

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

Environmental Monitor & Sensing Technology Laboratory, School of Electrical Engineering and Computer Science, Ningbo University, Ningbo 315211, China
State Key Laboratory of Transducer Technology, Chinese Academy of Sciences, Shanghai 200050, China
Ningbo Materials Science and Technology Institute, Chinese Academy of Sciences, Ningbo 315201, China
School of Electronic and Information Engineering, Ningbo University of Technology, Ningbo 315211, China
Authors to whom correspondence should be addressed.
Sensors 2018, 18(7), 2155;
Received: 7 June 2018 / Revised: 30 June 2018 / Accepted: 2 July 2018 / Published: 4 July 2018
(This article belongs to the Special Issue Functional Materials for the Applications of Advanced Gas Sensors)
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. View Full-Text
Keywords: limiting current oxygen sensor; zirconia-based; perovskite crystal phase limiting current oxygen sensor; zirconia-based; perovskite crystal phase
Show Figures

Figure 1

MDPI and ACS Style

Zou, J.; Lin, Q.; Cheng, C.; Zhang, X.; Jin, Q.; Jin, H.; Wang, J.; Jian, J. High-Performance Limiting Current Oxygen Sensor Comprised of Highly Active La0.75Sr0.25Cr0.5Mn0.5O3 Electrode. Sensors 2018, 18, 2155.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

Back to TopTop