Gas sensor based on protonic conductive membranes

Details Gas sensor based on protonic conductive membranes Gas sensor based on protonic conductive membranes

1995-01-31

1996-11-12

Tung, T.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204421, 204424, 204425, 204426, 205781, 2057835, 205784, 2057865, 205788, G01N 27407

Patent

active

055736483

ABSTRACT:
A low cost room temperature electrochemical gas sensor for sensing CO and other toxic analyte gases has a solid protonic conductive membrane with a low bulk ionic resistance. A sensing electrode and a count counter electrode, which are separated by the membrane, can be made of mixed protonic-electronic conductors. Embodiments of the inventive sensor also include an electrochemical analyte gas pump to transport the analyte gas away from the counter electrode side of the sensor. Analyte gas pumps for the inventive sensor include dual pumping electrodes situated on opposite sides of the membrane, and include a means for applying a DC power across the membrane to the sensing and counter electrodes. Another embodiment of the inventive sensor has first and second solid protonic conductive membranes, one of which has a sensing electrode and a counter electrode separated by the first membrane, and the other of which has dual pumping electrodes situated on opposite sides of the second membrane.

REFERENCES:
patent: 4024036 (1977-05-01), Nakamura et al.
patent: 4227984 (1980-10-01), Dempsey et al.
patent: 4536274 (1985-08-01), Papadakis et al.
patent: 4664757 (1987-05-01), Zupancic et al.
patent: 5118398 (1992-06-01), McElroy et al.
patent: 5133857 (1992-07-01), Alberti et al.
patent: 5164053 (1992-11-01), Razaq et al.
patent: 5173166 (1992-12-01), Tomantschger et al.
patent: 5302274 (1994-04-01), Tomantschger et al.
Sung B. Lee, Anthony Cocco, Darioush Keyvani and G. Jordan Maclay, Humidity Dependence of Carbon Monoxide Oxidation Rate in a Nafion-Based Electrochemical Cell, vol. 142, No. 1, Jan. 1995.

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