Water crossover reduction in DMFC utilizing hydrophobic anode MPL

Christian E. Shaffer, Chao Yang Wang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

Reducing the water crossover from anode to cathode is an important goal for direct methanol fuel cell (DMFC) technology, especially if highly concentrated methanol fuel is to be used. A well-documented way to reduce this water loss to the cathode side is by using a hydrophobic cathode microporous layer (MPL). Recently, however, it has been demonstrated that in addition to a cathode MPL, the use of a hydrophobic anode MPL further reduces the water loss to the cathode. In this work, we use a two-phase transport model that accounts for capillary induced liquid flow in porous media to explain physically how a hydrophobic anode MPL acts to control the net water transport from anode to cathode. Additionally, we perform a case study and show that a thicker, more hydrophobic anode MPL with lower permeability is most effective in controlling the net water transport from anode to cathode.

Original languageEnglish (US)
Title of host publicationProceedings of the 6th International Conference on Fuel Cell Science, Engineering, and Technology
Pages723-734
Number of pages12
DOIs
StatePublished - Dec 1 2008
Event6th International Conference on Fuel Cell Science, Engineering, and Technology - Denver, CO, United States
Duration: Jun 16 2008Jun 18 2008

Publication series

NameProceedings of the 6th International Conference on Fuel Cell Science, Engineering, and Technology

Other

Other6th International Conference on Fuel Cell Science, Engineering, and Technology
CountryUnited States
CityDenver, CO
Period6/16/086/18/08

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Fuel Technology

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