Electrochemical Filtering of CO from Fuel-Cell Reformate
- 1 January 2002
- journal article
- Published by The Electrochemical Society in Electrochemical and Solid-State Letters
- Vol. 5 (12), A267-A270
- https://doi.org/10.1149/1.1516411
Abstract
A proton exchange membrane fuel cell was used as a flow reactor for continuous preferential oxidation of CO over from 1.0% CO in under pulse-potential control. By varying the pulse profile (e.g., on-time, off-time, pulse potential) the CO and oxidation currents were varied independently. The improvement in faradaic selectivity between CO and oxidation results from the promotion of CO adsorption during the off (i.e., open-circuit) portion of the pulse. Therefore, during the on portion CO oxidation was preferred while the surface was covered with CO. © 2002 The Electrochemical Society. All rights reserved.Keywords
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