skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Additively manufactured mixed potential electrochemical sensors for NOx, C3H8, and NH3 detection

Journal Article · · Progress in Additive Manufacturing
ORCiD logo [1];  [1];  [2];  [3]
  1. Univ. of New Mexico, Albuquerque, NM (United States)
  2. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  3. Univ. of New Mexico, Albuquerque, NM (United States); Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

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.

Research Organization:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC04-94AL85000
OSTI ID:
1459925
Report Number(s):
SAND-2018-7018J; 665274
Journal Information:
Progress in Additive Manufacturing, Vol. 4, Issue 1; ISSN 2363-9512
Publisher:
SpringerCopyright Statement
Country of Publication:
United States
Language:
English

References (23)

Solid electrolyte based sensors for the measurement of CO and hydrocarbon gases journal March 2007
Ionic conduction in nanocrystalline materials journal June 2000
Ink-jettable paper-based sensor for charged macromolecules and surfactants journal May 2014
Effect of perovskite electrode composition on mixed potential sensor response journal July 2013
Printable polythiophene gas sensor array for low-cost electronic noses journal July 2006
Rapid Prototyping of Ceramic Components journal February 2000
Additive Manufacturing of Hybrid Circuits journal July 2016
Mixed-Potential NOx and NH3 Sensors Fabricated by Commercial Manufacturing Methods journal August 2014
Double layer capacitance of Pt(111) single crystal electrodes journal July 2001
Characterization of Electrochemical Surface Area and Porosity of Zirconia Sensors journal July 2017
Additive Manufacturing of Ceramic-Based Materials: Additive Manufacturing of Ceramic-Based Materials journal April 2014
Dynamometer Testing of Planar Mixed-Potential Sensors journal September 2014
A printed H2S sensor with electro-optical response journal February 2014
Quantitative decoding of the response a ceramic mixed potential sensor array for engine emissions control and diagnostics journal October 2017
Additive manufacturing of non-assembly mechanisms journal May 2018
Additive manufacturing (3D printing): A review of materials, methods, applications and challenges journal June 2018
A Three Electrode Mixed Potential Sensor for Gas Detection and Discrimination journal August 2016
A Review of Robocasting Technology journal January 1998
Application of commercial automotive sensor manufacturing methods for NOx/NH3 mixed potential sensors for on-board emissions control journal January 2010
Processing of advanced electroceramic components by fused deposition technique journal January 2001
Additive manufacturing of titanium alloys in the biomedical field: processes, properties and applications journal August 2017
Sensing mechanism of non-equilibrium solid-electrolyte-based chemical sensors journal March 2010
Solid-state mixed potential gas sensors: theory, experiments and challenges journal November 2000