Pseudo homogeneous catalyst layer model for polymer electrolyte fuel cell

Conference · Tue Jan 01 00:00:00 EST 1991

OSTI ID:5571241

Springer, T E; Gottesfeld, S

We have developed a relatively simple one-dimensional model for the cathode catalyst layer. This model explains certain observed polarization curve features at higher current densities. These features include a change in linear slope, instead of a sharp limiting current feature, and a lower than expected ratio of current density measured using O{sub 2} relative to air. Diffusional paths, ionic resistance, and catalyst sites are intimately coupled in a pseudohomogeneous layer using effective'' parameters. 3 refs., 7 figs.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 5571241
• Report Number(s): LA-UR-91-2390; CONF-911047-4; ON: DE91016014
• Resource Relation: Conference: 180. meeting of the Electrochemical Society, Phoenix, AZ (United States), 13-18 Oct 1991
• Country of Publication: United States
• Language: English

Related Subjects

30 DIRECT ENERGY CONVERSION
CATALYSTS
MATHEMATICAL MODELS
CATHODES
SOLID ELECTROLYTE FUEL CELLS
ELECTRIC CURRENTS
CURRENT DENSITY
DIFFUSION
IONIC CONDUCTIVITY
LAYERS
OXYGEN
POLYMERS
CURRENTS
DIRECT ENERGY CONVERTERS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTROCHEMICAL CELLS
ELECTRODES
ELEMENTS
FUEL CELLS
NONMETALS
PHYSICAL PROPERTIES
300503* - Fuel Cells- Materials
Components
& Auxiliaries
300502 - Fuel Cells- Performance & Testing