Comparison of numerical simulation results with experimental current density and methanol-crossover data for direct methanol fuel cells

Johan Ko, Giyong Lee, Yongjun Choi, Purushothama Chippar, Kyungmun Kang, Hyunchul Ju

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

The simulation results of a one-dimensional (1D) direct methanol fuel cell (DMFC) model are compared with the current density and methanol-crossover data that are experimentally measured under several different cell designs and operating conditions. No fitting parameters are employed for the comparison and model input parameters obtained from the literature are consistently used for all the cases of comparison. The numerical predictions agree well with the experimental data and the 1D DMFC model successfully captures key experimental trends that are observed in the cell current density and methanol-crossover data. This clearly illustrates that the present DMFC model can be applicable for optimizing DMFC component designs and operating conditions. In addition, the model simulations further indicate that the reduction of the methanol concentration in the anode catalyst layer is critical to simultaneously suppress both the electro-osmotic drag (EOD) and the diffusion aspects of methanol crossover.

Original languageEnglish
Pages (from-to)935-945
Number of pages11
JournalJournal of Power Sources
Volume196
Issue number3
DOIs
StatePublished - 1 Feb 2011

Keywords

  • Diffusion
  • Direct methanol fuel cell
  • Electro-osmotic drag
  • Methanol crossover
  • Model comparison

Fingerprint

Dive into the research topics of 'Comparison of numerical simulation results with experimental current density and methanol-crossover data for direct methanol fuel cells'. Together they form a unique fingerprint.

Cite this