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Amperometric electrochemical sensors, sensor systems and detection methods

Patent ·
OSTI ID:2222342

An amperometric electrochemical sensor for measuring the concentrations of one or more target gas species in a gas sample or gas stream, the sensor having at least one electrochemical cell with first and second surface electrodes, an electrolyte layer and a passive signal amplifying layer (“SAL”) comprising electrically conductive material like platinum, wherein at least a portion of the electrolyte layer is located between the surface electrodes and the SAL such that the SAL is in direct, conductive contact with the electrolyte layer but is not in direct contact with the surface electrodes. Sensor systems and detection methods are also provided.

Research Organization:
Nextech Materials, Ltd., Lewis Center, OH (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
SC0009258
Assignee:
Nextech Materials, Ltd. (Lewis Center, OH)
Patent Number(s):
11,761,923
Application Number:
16/085,900
OSTI ID:
2222342
Country of Publication:
United States
Language:
English

References (3)

Tungsten oxide-based semiconductor sensor for detection of nitrogen oxides in combustion exhaust journal June 1993
Application of metal tungstate-carbonate composite to nitrogen oxides sensor operative at elevated temperature journal April 1995
Ammonia sensors based on stabilized zirconia and CoWO4 sensing electrode journal October 2012

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