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Al2O3 Disk Supported Si3N4 Hydrogen Purification Membrane for Low Temperature Polymer Electrolyte Membrane Fuel Cells

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Author(s): Xiaoteng Liu | Paul A. Christensen | Stephen M. Kelly | Vincent Rocher | Keith Scott

Journal: Membranes
ISSN 2077-0375

Volume: 3;
Issue: 4;
Start page: 406;
Date: 2013;
Original page

Keywords: Al2O3 disk supported Si3N4 membrane | hydrogen purification | CO removal | fuel cells | Pt catalyst

ABSTRACT
Reformate gas, a commonly employed fuel for polymer electrolyte membrane fuel cells (PEMFCs), contains carbon monoxide, which poisons Pt-containing anodes in such devices. A novel, low-cost mesoporous Si3N4 selective gas separation material was tested as a hydrogen clean-up membrane to remove CO from simulated feed gas to single-cell PEMFC, employing Nafion as the polymer electrolyte membrane. Polarization and power density measurements and gas chromatography showed a clear effect of separating the CO from the gas mixture; the performance and durability of the fuel cell was thereby significantly improved.
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