Characteristics of Pd/Nafion oxygen sensor modified with polypyrrole by chemical vapor deposition

Yu Chuan Liu; Bing Joe Hwang; Wen Cheng Hsu

doi:10.1007/s100080100230

Characteristics of Pd/Nafion oxygen sensor modified with polypyrrole by chemical vapor deposition

Yu Chuan Liu, Bing Joe Hwang, Wen Cheng Hsu

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

4 Citations (Scopus)

Abstract

In this study, Pd/Nafion electrodes were prepared by impregnation-reduction methods in sensing oxygen. To prolong the electrode's life in practical use, a polypyrrole (PPy) film was chemically deposited onto the Pd/Nafion electrode. The sensitivities of PPy-modified Pd/Nafion electrodes are 0.00671 and 0.0117 μA/ppm obtained in O₂ concentration regions of 0-5000 and 5000-50,000 ppm, respectively. Generally, the response time and the recovery time decreases and increases significantly with increasing O₂ concentrations. After continuous aging tests for 48 h, the sensitivities of the Pd/Nafion and the PPy-modified Pd/Nafion electrodes decrease by 97% and 53%, respectively.

Original language	English
Pages (from-to)	351-356
Number of pages	6
Journal	Journal of Solid State Electrochemistry
Volume	6
Issue number	5
DOIs	https://doi.org/10.1007/s100080100230
Publication status	Published - Jun 2002
Externally published	Yes

Keywords

Aging
Chemical vapor deposition
Oxygen
PPy-modified Pd/Nafion electrode

ASJC Scopus subject areas

Condensed Matter Physics
Electrical and Electronic Engineering
General Materials Science
Electrochemistry

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10.1007/s100080100230

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title = "Characteristics of Pd/Nafion oxygen sensor modified with polypyrrole by chemical vapor deposition",

abstract = "In this study, Pd/Nafion electrodes were prepared by impregnation-reduction methods in sensing oxygen. To prolong the electrode's life in practical use, a polypyrrole (PPy) film was chemically deposited onto the Pd/Nafion electrode. The sensitivities of PPy-modified Pd/Nafion electrodes are 0.00671 and 0.0117 μA/ppm obtained in O2 concentration regions of 0-5000 and 5000-50,000 ppm, respectively. Generally, the response time and the recovery time decreases and increases significantly with increasing O2 concentrations. After continuous aging tests for 48 h, the sensitivities of the Pd/Nafion and the PPy-modified Pd/Nafion electrodes decrease by 97% and 53%, respectively.",

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year = "2002",

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pages = "351--356",

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T1 - Characteristics of Pd/Nafion oxygen sensor modified with polypyrrole by chemical vapor deposition

AU - Liu, Yu Chuan

AU - Hwang, Bing Joe

AU - Hsu, Wen Cheng

PY - 2002/6

Y1 - 2002/6

N2 - In this study, Pd/Nafion electrodes were prepared by impregnation-reduction methods in sensing oxygen. To prolong the electrode's life in practical use, a polypyrrole (PPy) film was chemically deposited onto the Pd/Nafion electrode. The sensitivities of PPy-modified Pd/Nafion electrodes are 0.00671 and 0.0117 μA/ppm obtained in O2 concentration regions of 0-5000 and 5000-50,000 ppm, respectively. Generally, the response time and the recovery time decreases and increases significantly with increasing O2 concentrations. After continuous aging tests for 48 h, the sensitivities of the Pd/Nafion and the PPy-modified Pd/Nafion electrodes decrease by 97% and 53%, respectively.

AB - In this study, Pd/Nafion electrodes were prepared by impregnation-reduction methods in sensing oxygen. To prolong the electrode's life in practical use, a polypyrrole (PPy) film was chemically deposited onto the Pd/Nafion electrode. The sensitivities of PPy-modified Pd/Nafion electrodes are 0.00671 and 0.0117 μA/ppm obtained in O2 concentration regions of 0-5000 and 5000-50,000 ppm, respectively. Generally, the response time and the recovery time decreases and increases significantly with increasing O2 concentrations. After continuous aging tests for 48 h, the sensitivities of the Pd/Nafion and the PPy-modified Pd/Nafion electrodes decrease by 97% and 53%, respectively.

KW - Aging

KW - Chemical vapor deposition

KW - Oxygen

KW - PPy-modified Pd/Nafion electrode

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DO - 10.1007/s100080100230

M3 - Article

AN - SCOPUS:0035998454

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JO - Journal of Solid State Electrochemistry

JF - Journal of Solid State Electrochemistry

IS - 5

ER -

Characteristics of Pd/Nafion oxygen sensor modified with polypyrrole by chemical vapor deposition

Abstract

Keywords

ASJC Scopus subject areas

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