Electrochemical carbon monoxide sensor with a Nafion ® film

A solid-state planar electrochemical carbon monoxide sensor was built and studied. The sensor features a planar geometry of the electrodes (working, counter, reference), where all three electrodes are located on the same side of a substrate. The electrodes are covered by the CO-semipermeable proton-...

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Bibliographic Details
Published in:Reactive & functional polymers 1999-07, Vol.41 (1), p.235-243
Main Authors: Yasuda, Ayumu, Shimidzu, Takeo
Format: Article
Language:English
Subjects:
Analytical chemistry
Application fields
Applied sciences
Carbon monoxide
Chemistry
Electrochemistry
Exact sciences and technology
General, instrumentation
Polymer industry, paints, wood
Proton conductor
Sensor
Solid-state
Technology of polymers
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Description
Summary:A solid-state planar electrochemical carbon monoxide sensor was built and studied. The sensor features a planar geometry of the electrodes (working, counter, reference), where all three electrodes are located on the same side of a substrate. The electrodes are covered by the CO-semipermeable proton-conducting polymer film. The sensor shows characteristics of a practical-use level: response time, 30 s; range, 0–2000 ppm; sensitivity, 0.04 nA/ppm; life, more than 2 yr. The sensitivity is governed by both the CO permeability of the polymer film and the CO oxidation rate, in other words, by the intermediate kinetic mechanism.
ISSN:1381-5148
DOI:10.1016/S1381-5148(99)00040-1