Additively manufactured mixed potential electrochemical sensors for NOx, C3H8, and NH3 detection
Abstract
Additive manufacturing of mixed potential electrochemical sensors opens the possibility to perform rapid prototyping of electrode and electrolyte materials. We report for the first time the use of this technique for the fabrication of solid-state electrochemical gas sensors of the mixed potential type and assessment of variability in the manufacturing process. La0.87Sr0.13CrO3 (LSCO) and Pt electrodes bridged with a porous yttria-stabilized zirconia (YSZ) have been deposited on YSZ substrates by direct-write extrusion of pastes and inks. The sensors are evaluated for their sensitivity to 200 ppm of NOx, C3H8, and NH3. There is a need to understand how variations in intrinsic materials parameters during manufacturing such as differences in porosity affect the gas sensing of additively manufactured sensors to guide optimization of their performance and serve as quality control techniques. Further characterizations of these devices include electrochemical impedance spectroscopy and an aqueous electrochemical assessment of the electrode surface area and diffusion through the porous layer. In conclusion, we find a correlation of increased sensitivity with larger gas reaction impedance, higher Pt electrode surface area, and slower diffusion.
- Authors:
-
- Univ. of New Mexico, Albuquerque, NM (United States)
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Univ. of New Mexico, Albuquerque, NM (United States); Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Publication Date:
- Research Org.:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1459925
- Report Number(s):
- SAND-2018-7018J
Journal ID: ISSN 2363-9512; 665274
- Grant/Contract Number:
- AC04-94AL85000
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Progress in Additive Manufacturing
- Additional Journal Information:
- Journal Volume: 4; Journal Issue: 1; Journal ID: ISSN 2363-9512
- Publisher:
- Springer
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Citation Formats
Tsui, Lok-kun, Benavidez, Angelica, Evans, Lindsey, and Garzon, Fernando H. Additively manufactured mixed potential electrochemical sensors for NOx, C3H8, and NH3 detection. United States: N. p., 2018.
Web. doi:10.1007/s40964-018-0054-2.
Tsui, Lok-kun, Benavidez, Angelica, Evans, Lindsey, & Garzon, Fernando H. Additively manufactured mixed potential electrochemical sensors for NOx, C3H8, and NH3 detection. United States. https://doi.org/10.1007/s40964-018-0054-2
Tsui, Lok-kun, Benavidez, Angelica, Evans, Lindsey, and Garzon, Fernando H. Fri .
"Additively manufactured mixed potential electrochemical sensors for NOx, C3H8, and NH3 detection". United States. https://doi.org/10.1007/s40964-018-0054-2. https://www.osti.gov/servlets/purl/1459925.
@article{osti_1459925,
title = {Additively manufactured mixed potential electrochemical sensors for NOx, C3H8, and NH3 detection},
author = {Tsui, Lok-kun and Benavidez, Angelica and Evans, Lindsey and Garzon, Fernando H.},
abstractNote = {Additive manufacturing of mixed potential electrochemical sensors opens the possibility to perform rapid prototyping of electrode and electrolyte materials. We report for the first time the use of this technique for the fabrication of solid-state electrochemical gas sensors of the mixed potential type and assessment of variability in the manufacturing process. La0.87Sr0.13CrO3 (LSCO) and Pt electrodes bridged with a porous yttria-stabilized zirconia (YSZ) have been deposited on YSZ substrates by direct-write extrusion of pastes and inks. The sensors are evaluated for their sensitivity to 200 ppm of NOx, C3H8, and NH3. There is a need to understand how variations in intrinsic materials parameters during manufacturing such as differences in porosity affect the gas sensing of additively manufactured sensors to guide optimization of their performance and serve as quality control techniques. Further characterizations of these devices include electrochemical impedance spectroscopy and an aqueous electrochemical assessment of the electrode surface area and diffusion through the porous layer. In conclusion, we find a correlation of increased sensitivity with larger gas reaction impedance, higher Pt electrode surface area, and slower diffusion.},
doi = {10.1007/s40964-018-0054-2},
journal = {Progress in Additive Manufacturing},
number = 1,
volume = 4,
place = {United States},
year = {Fri Jun 01 00:00:00 EDT 2018},
month = {Fri Jun 01 00:00:00 EDT 2018}
}
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