Model of two-phase flow and flooding dynamics in polymer electrolyte fuel cells

Hua Meng, Chao Yang Wang

Research output: Contribution to journalArticlepeer-review

191 Scopus citations

Abstract

A mathematical model for two-phase flow and flooding dynamics in polymer electrolyte fuel cells (PEFCs) has been developed based on recent experimental observations. This three-dimensional PEFC model consists of four submodels to account for two-phase phenomena, including a catalyst coverage model in the catalyst layer, a two-phase transport model in the gas diffusion layer (GDL), a liquid coverage model at the GDL-channel interface, and a two-phase flow model in the gas channel (GC). The multiphase mixture (M2) model is employed to describe liquid water transport in the GDL while a mist flow model is used in the gas channel. An interfacial coverage model by liquid water at the GDL/GC interface is developed, for the first time, to account for water droplet emergence on the GDL surface. The inclusion of this interfacial model not only gives the present two-phase model a capability to predict the cathode flooding effect on cell performance, but also ultimately removes the inability of prior two-phase models to correctly capture effects of the gas velocity (or stoichiometry) on cell performance.

Original languageEnglish (US)
Pages (from-to)A1733-A1741
JournalJournal of the Electrochemical Society
Volume152
Issue number9
DOIs
StatePublished - Oct 7 2005

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Model of two-phase flow and flooding dynamics in polymer electrolyte fuel cells'. Together they form a unique fingerprint.

Cite this