Los Alamos National Laboratory

Los Alamos National Laboratory

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Nitrogen Oxide Sensor

A low-cost adaptable method of mass producing robust nitrogen oxide sensors. 

LAUR: 16-22506

Benefits/Features

  • LANL Circumvents the Traditional Methods- Los Alamos’s patented method of tape casting the electrolytes circumvents the traditional method of embedding and sintering electrodes in an electrolyte by hand. LANL's thin film mixed potential nitrogen oxide sensors combine dense La1-xSrxO3-δ (LSC) sensing electrodes and porous electrolytes to impart stability to the electrode and electrolyte morphology and produce a stable sensor response.
  • Direct Automotive and Industrial Applications- Nitrogen oxide sensors have these applications to help improve and verify the efficiency of emission systems. Over time, the Nitrogen Oxide sensor has gained exceptional heater stability, sample reproducibility, and stable level of selectivity personify significant strides towards these goals.
Publications

Cortney R. Kreller, Vitaly Y. Prikhodko, Josh A. Pihl, Scott Curran, James E. Parks II, Fernando H. Garzon, Rangachary Mukundan, and Eric L. Brosha, “Dynamometer Testing of Planar Mixed-Potential Sensors,” Submitted to the Journal of Emissions Controls, Winter 2016.

E. L. Brosha, C. R. Kreller, V. Y. Prikhodko, J.A. Pihl, S. Curran, J.E. Parks II, and R. Mukundan, “Performance Evaluation of Mixed-Potential NOx and NH3 Sensors in Diesel and Lean Gasoline Exhaust,” in preparation, Winter 2016.

Cortney R. Kreller, Praveen K. Sekhar ,Wenxia Li, Ponnusamy Palanisamy, Eric L. Brosha, Rangachary Mukundan, and Fernando H. Garzon, “Application of Commercial Manufacturing Methods to Mixed-Potential NOx Sensors,” ECS Transactions 50 (12) (2012) 307-314.

P.K.Sekhar, E.L. Brosha, R. Mukundan, W.Li, M.A.Nelson, P. Palanisamy, and F.H. Garzon, “Application of Commercial Automotive Sensor Manufacturing Methods for NOx/NH3 Mixed Potential Sensors for On-Board Emissions Control”, Sensors and Actuators B: Chemical 144, 112 (2010).

Patents

U.S. Patent # 6,656,336, “Method for Forming a Potential Hydrocarbon Sensor with Low Sensitivity to Methane and CO, issued Dec 2, 2003 (DOE S-97,844).

U.S. Patent # 6,605,202, “Electrodes for Solid State Gas Sensor”, issued Aug 12, 2003 (DOE S-99,902).

U.S. Patent # 7,214,333, “Electrodes for Solid State Gas Sensor”, issued May 8, 2007 (DOE S-100,634).

U.S. Patent # 7,264,700, “Thin Film Mixed Potential Sensors”; issued Sept. 4, 2007 (DOE S-100,655).

Development Stage

TRL 7. Dynamometer testing at the National Transportation Research Center, Oak Ridge National Laboratory in Oak Ridge, TN in lean gasoline and diesel engine exhaust environment.

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