Licensable Technologies
: Information Technology
Electrodes for Solid State Gas Sensor
Abstract
Los Alamos National Laboratory has developed a mixed-potential electrochemical sensor for the detection of gases, such as CO, NO, and non-methane hydrocarbons, in room air. The sensor utilizes a ceria-based electrolyte, and metal wire electrodes. The stability and reproducibility of the sensor is achieved by using wire electrodes instead of the usual thin or thick film electrodes that are currently employed. The metal wire-electrodes are directly embedded into the electrolyte and co-sintered in order to produce a stable metal/electrolyte interface. A suitable ceria-based electrolyte is Ce1-x Ax O2-x/2, where 0≤ x ≤ 0.25 and A is selected from Y, Sc, or Lanthanide.
Application(s)
CO emissions monitoring and sensing for:
• Automotive Industry
• Power Generation Industry
• Chemical Industry
• Residential and Industrial Safety & Hygiene
Advantages
• The "burn in" period before a stable signal is achieved is much shorter than existing semiconductor sensor technology.
• The sensor response is easily reproducible from sensor to sensor and the variation is <10% of signal level.
• The electrodes and electrolytes are co-sintered and hence there is only one heat treatment step involved in the entire sensor preparation.
• The sensor preparation consists only of standard solid-state synthesis and is very cheap.
IP Status: Available both Exclusively and Non Exclusively
Commercialization Strategy: This technology is available for license and may be licensed exclusively, in a field of use or non-exclusively, depending upon the finalization of the optimal commercialization strategy. Cooperative research and development may also be available.
U.S. Patent 6,605,202 (Device)
U.S Patent Application Publication 2004/0016104 (Method)
Additional Reference No.
S99,902
S100,634
Reference Number: 611
S Number: DOE reference no.(s): 100,634; 94,728; 99,902
Patents & Applications:
United States National Patent Number 7214333 Issued on 05/08/2007 United States National Patent Number 6605202 Issued on 08/12/2003
Posted: 11-02-2005
Contact
John Mott
Technology Transfer Division
Los Alamos National Laboratory
P.O. Box 1663, MailStop C334
(505) 665-0883
jmott@lanl.gov
