Numerical analysis of the effect of different gas feeding modes in a proton exchange membrane fuel cell with serpentine flow-field

• Tipo: Artigo em Revista Científica Internacional
• Data: 2011

Autores

Sierra, JM (Autor) Outra; Agostinho Moreira, JA (Autor) FCUP; Sebastian, PJ (Autor) Outra

Revista

Título: Journal of Power Sources

Vol. 196

Páginas: 5070-5076

ISSN: 0378-7753

Editora: Elsevier

Indexação

Scopus - 19 Citações

Outras Informações

ID Authenticus: P-00N-5E1

DOI: 10.1016/j.jpowsour.2011.01.079

Abstract (EN): In this work we present a 3D computational model of a proton exchange membrane fuel cell (PEMFC) to investigate the effect of employing different modes of gas feeding on distributions. The model is based on a commercial fuel cell with serpentine flow-field. From a rigorous analysis of species concentration, current density and ionic conductivity distributions a correct form of feeding gases in the fuel cell is determined. Optimal operating conditions are found for a better utilization of fuel. Simulation results reveal that local current distribution on catalyst layer can be improved by feeding gases in similar mode and changing the channel height. However, polarization curves present an opposite response to this result. The polarization curve obtained in simulation is well correlated with experimental data. © 2011 Elsevier B.V.

Idioma: Inglês

Tipo (Avaliação Docente): Científica