Improvement in anti-aging of metallized Nafion® hydrogen sensors modified by chemical vapor deposition of polypyrrole

Yu Chuan Liu; Bing Joe Hwang; Wen Cheng Hsu

doi:10.1016/S0925-4005(02)00250-2

Improvement in anti-aging of metallized Nafion® hydrogen sensors modified by chemical vapor deposition of polypyrrole

Yu Chuan Liu, Bing Joe Hwang, Wen Cheng Hsu

Research output: Contribution to journal › Article › peer-review

24 Citations (Scopus)

Abstract

Pt/Nafion® and Pd/Nafion® electrodes were prepared by impregnation-reduction methods in detecting hydrogen. For improving their anti-aging abilities, polypyrrole (PPy) films were chemically deposited onto the metallized electrodes. After continuously aging tests for 48 h, the sensitivities of the Pt/Nafion® and the PPy-modified Pt/Nafion® electrodes decrease by 68 and 32%, respectively, but the accompanying sacrifice is the loss in sensitivity from 0.0744 to 0.0261 μA/ppm. Similarly, the sensitivities of the Pd/Nafion® and the PPy-modified Pd/Nafion® electrodes decrease by 84 and 68%, respectively, accompanying with the sacrifice of loss in sensitivity from 0.0519 to 0.0262 μA/ppm.

Original language	English
Pages (from-to)	304-308
Number of pages	5
Journal	Sensors and Actuators, B: Chemical
Volume	87
Issue number	2
DOIs	https://doi.org/10.1016/S0925-4005(02)00250-2
Publication status	Published - Dec 10 2002
Externally published	Yes

Keywords

Aging
Chemical vapor deposition
Metallized Nafion® electrodes
Polypyrrole modification

ASJC Scopus subject areas

Analytical Chemistry
Electrochemistry
Electrical and Electronic Engineering

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10.1016/S0925-4005(02)00250-2

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title = "Improvement in anti-aging of metallized Nafion{\textregistered} hydrogen sensors modified by chemical vapor deposition of polypyrrole",

abstract = "Pt/Nafion{\textregistered} and Pd/Nafion{\textregistered} electrodes were prepared by impregnation-reduction methods in detecting hydrogen. For improving their anti-aging abilities, polypyrrole (PPy) films were chemically deposited onto the metallized electrodes. After continuously aging tests for 48 h, the sensitivities of the Pt/Nafion{\textregistered} and the PPy-modified Pt/Nafion{\textregistered} electrodes decrease by 68 and 32%, respectively, but the accompanying sacrifice is the loss in sensitivity from 0.0744 to 0.0261 μA/ppm. Similarly, the sensitivities of the Pd/Nafion{\textregistered} and the PPy-modified Pd/Nafion{\textregistered} electrodes decrease by 84 and 68%, respectively, accompanying with the sacrifice of loss in sensitivity from 0.0519 to 0.0262 μA/ppm.",

keywords = "Aging, Chemical vapor deposition, Metallized Nafion{\textregistered} electrodes, Polypyrrole modification",

author = "Liu, {Yu Chuan} and Hwang, {Bing Joe} and Hsu, {Wen Cheng}",

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doi = "10.1016/S0925-4005(02)00250-2",

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T1 - Improvement in anti-aging of metallized Nafion® hydrogen sensors modified by chemical vapor deposition of polypyrrole

AU - Liu, Yu Chuan

AU - Hwang, Bing Joe

AU - Hsu, Wen Cheng

PY - 2002/12/10

Y1 - 2002/12/10

N2 - Pt/Nafion® and Pd/Nafion® electrodes were prepared by impregnation-reduction methods in detecting hydrogen. For improving their anti-aging abilities, polypyrrole (PPy) films were chemically deposited onto the metallized electrodes. After continuously aging tests for 48 h, the sensitivities of the Pt/Nafion® and the PPy-modified Pt/Nafion® electrodes decrease by 68 and 32%, respectively, but the accompanying sacrifice is the loss in sensitivity from 0.0744 to 0.0261 μA/ppm. Similarly, the sensitivities of the Pd/Nafion® and the PPy-modified Pd/Nafion® electrodes decrease by 84 and 68%, respectively, accompanying with the sacrifice of loss in sensitivity from 0.0519 to 0.0262 μA/ppm.

AB - Pt/Nafion® and Pd/Nafion® electrodes were prepared by impregnation-reduction methods in detecting hydrogen. For improving their anti-aging abilities, polypyrrole (PPy) films were chemically deposited onto the metallized electrodes. After continuously aging tests for 48 h, the sensitivities of the Pt/Nafion® and the PPy-modified Pt/Nafion® electrodes decrease by 68 and 32%, respectively, but the accompanying sacrifice is the loss in sensitivity from 0.0744 to 0.0261 μA/ppm. Similarly, the sensitivities of the Pd/Nafion® and the PPy-modified Pd/Nafion® electrodes decrease by 84 and 68%, respectively, accompanying with the sacrifice of loss in sensitivity from 0.0519 to 0.0262 μA/ppm.

KW - Aging

KW - Chemical vapor deposition

KW - Metallized Nafion® electrodes

KW - Polypyrrole modification

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ER -

Improvement in anti-aging of metallized Nafion® hydrogen sensors modified by chemical vapor deposition of polypyrrole

Abstract

Keywords

ASJC Scopus subject areas

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