A low temperature sensor for the detection of carbon monoxide in hydrogen

被引：28
作者：
Mukundan, R [1 ]
Brosha, EL [1 ]
Garzon, FH [1 ]
机构：
[1] Los Alamos Natl Lab, Los Alamos, NM 87545 USA
来源：
SOLID STATE IONICS | 2004年 / 175卷 / 1-4期
关键词：
sensors; carbon monoxide; fuel cells; platinum and ruthenium;
D O I：
10.1016/j.ssi.2004.02.074
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
A sensor to detect the carbon monoxide in a reformate stream that fuels a polymer electrolyte membrane (PEM) fuel cell is presented. This electrochemical sensor consists of a Nafion(R) electrolyte and Pt- or Ru-based electrodes and works on the principle of differential CO poisoning of the various precious metal electrodes. Varying the composition and loading of the precious metal in the electrode optimized the response of the sensor. A sensor with a working electrode of Pt and a pseudo-reference electrode of Pt-Ru alloy and a precious metal loading of 10 mg/cm(2) showed a stable and reproducible response to 10-200 ppm of CO at room temperature and 100-1000 ppm CO at 70 degreesC. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：497 / 501
页数：5
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