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A new hydrogen sensor with pellicular Zr phosphate as proton conductor

✍ Scribed by L. De Angelis; A. Maimone; L. Modica; G. Alberti; R. Palombari

Publisher: Elsevier Science
Year: 1990
Tongue: English
Weight: 366 KB
Volume: 1
Category: Article
ISSN: 0925-4005
DOI: 10.1016/0925-4005(90)80185-3

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✦ Synopsis

A new type of miniaturized gas sensor for detecting very small amounts of H2 in air in the temperature range O-200 "C is proposed. The sensor is a potentiometric electrochemical cell composed of a platinum or palladium thin film as sensing electrode, a thin film of pellicular zirconium phosphate (0.01-o. 1 mm) as solid protonic conductor and a plate of titanium hydride (TiH,) as reference electrode. The device shows a sensitivity for Hz in air better than 1 ppm and exhibits a fast response of a few seconds if the concentration of H, is more than 10 ppm.

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