Modeling of polymer electrolyte fuel cell performance with reformate fuel feed streams

Conference · Thu May 01 04:00:00 EDT 1997

OSTI ID:625300

Springer, T E; Zawodzinski, T A; Gottesfeld, S

Carbon monoxide poisoning of polymer electrolyte fuel cell anodes is a key problem to be overcome when operating on reformed fuels. CO adsorbs on the precious metal surface leading to substantial performance losses. Much recent work has explored this problem, using various Pt alloys in attempts to overcome the performance loss. In their studies of hydrogen oxidation on Pt and Pt alloy (Pt/Sn, Pt/Ru) electrodes exposed to H2/CO mixtures, Gasteiger et al. (1, 2) showed that a small oxidation current is observed before the onset of CO oxidative stripping (ca. 0.4 V) on Pt/Ru. However, these workers concluded that the observed current was

• Research Organization: Los Alamos National Lab., NM (United States)
• Sponsoring Organization: Department of Transportation, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 625300
• Report Number(s): LA-UR--97-2196; CONF-970517--; ON: DE97008569
• Country of Publication: United States
• Language: English

Related Subjects

30 DIRECT ENERGY CONVERSION
ADSORPTION
ALLOYS
ANODES
CARBON MONOXIDE
ELECTRODES
FEEDING
FUEL CELLS
HYDROGEN
LOSSES
MATHEMATICAL MODELS
OXIDATION
PEFC(POLYMER ELECTROLYTE FUEL CELL)
PERFORMANCE
PLATINUM ALLOYS
REFORMER PROCESSES
RUTHENIUM
SOLID ELECTROLYTES
STREAMS
SURFACES
TIN