Gas sensors

Details Gas sensors Gas sensors

1993-01-28

1994-06-21

Niebling, John

Chemistry: electrical and wave energy

Processes and products

Processes of treating materials by wave energy

20415318, 204424, 204421, 204431, 204432, 204415, 204418, G01N 2726

Patent

active

053226020

ABSTRACT:
An improved perfluorinated, ion-exchange polymer, either in the form of a membrane or a thin film useful as the electrolyte in chemical sensors. The polymer is treated with an acid, such as boric acid or a mixture of boric acid and phosphoric acid, to maintain the ionic conductivity of the polymer to approximately 180 degrees Centigrade. The improved polymer electrolyte is utilized to sense moisture by a two electrode structure with the electrodes arranged in interdigital fashion and the electrolyte film cast over the electrodes. The electrolyte is included in a 3 electrode sensor for sensing various types of gases.

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F. A. Keidel, Analytical Chemistry, vol. 31, No. 12, p. 2043 (1959).
Huang, Analytical Chemistry, vol. 63, No. 15, Aug. 1, 1991, pp. 1570-1573.

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