Liquid water in PEM fuel cell cathode and its influencing factors

Hong Sun, Liejin Guo, Hongtan Liu

Research output: Contribution to journalArticlepeer-review

Abstract

Liquid water saturation in the cathode porous electrode plays an important role in PEM fuel cell performance and mass transport. A steady-state two-dimensional, two-phase flow mathematical model for PEM fuel cell is presented. The model couples continuity equation, momentum equation and species conservation equations. Net water transport flux in the membrane is considered as a boundary condition. The effect of fuel cell temperature and pressure on its performance is investigated by experiment and simulation. The modeling results compared well with the experimental data. The results of simulation show that the liquid water saturation on the interface between the cathode CTL and GDL increases significantly with the increase of fuel cell pressure and the cathode humidification temperature, the effect due to the increase in the anode humidification temperature is negligible, and the saturation decreases with the increase of fuel cell operation temperature.

Original languageEnglish (US)
Pages (from-to)215-219
Number of pages5
JournalHuagong Xuebao/Journal of Chemical Industry and Engineering (China)
Volume55
Issue numberSUPPL.
StatePublished - Oct 2004
Externally publishedYes

Keywords

  • Fuel cell (FC)
  • Mathematical model
  • Proton exchange membrane (PEM)
  • Water transport

ASJC Scopus subject areas

  • Process Chemistry and Technology
  • Filtration and Separation

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