A three-dimensional mathematical model for liquid-fed direct methanol fuel cells

Jiabin Ge, Hongtan Liu

Research output: Contribution to journalArticle

67 Citations (Scopus)

Abstract

A three-dimensional, single-phase, multi-component mathematical model has been developed for a liquid-fed direct methanol fuel cell (DMFC). The traditional continuity, momentum, and species conservation equations are coupled with electrochemical kinetics in both the anode and cathode catalyst layer. At the anode side, the liquid phase is considered, and at the cathode side only the gas phase is considered. Methanol crossover due to both diffusion and electro-osmotic drag from the anode to the cathode is taken into consideration and the effect is incorporated into the model using a mixed-potential at the cathode. A finite-volume-based CFD technique is used to develop the in-house numerical code and the code is successfully used to simulate the fuel cell performance as well as the multi-component behavior in a DMFC. The modeling results of polarization curves compare well with our experimental data. Subsequently, the model is used to study the effects of methanol crossover, the effects of porosities of the diffusion layer and the catalyst layer, the effects of methanol flow rates, and the effects of the channel shoulder widths.

Original languageEnglish
Pages (from-to)413-421
Number of pages9
JournalJournal of Power Sources
Volume160
Issue number1
DOIs
StatePublished - Sep 29 2006

Fingerprint

Direct methanol fuel cells (DMFC)
three dimensional models
fuel cells
mathematical models
Cathodes
methyl alcohol
Mathematical models
Methanol
Anodes
cathodes
Liquids
liquids
anodes
crossovers
Catalysts
catalysts
conservation equations
Drag
Fuel cells
Conservation

Keywords

  • DMFC
  • Mathematical model

ASJC Scopus subject areas

  • Electrochemistry
  • Fuel Technology
  • Materials Chemistry
  • Energy (miscellaneous)

Cite this

A three-dimensional mathematical model for liquid-fed direct methanol fuel cells. / Ge, Jiabin; Liu, Hongtan.

In: Journal of Power Sources, Vol. 160, No. 1, 29.09.2006, p. 413-421.

Research output: Contribution to journalArticle

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