TY - GEN
T1 - WATER CROSSOVER REDUCTION IN DMFC UTILIZING HYDROPHOBIC ANODE MPL
AU - Shaffer, Christian E.
AU - Wang, Chao Yang
N1 - Funding Information:
Financial support of this work by ECEC industrial sponsors is gratefully acknowledged.
Publisher Copyright:
© 2022 by ASME.
PY - 2008
Y1 - 2008
N2 - 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.
AB - 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.
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U2 - 10.1115/FuelCell2008-65019
DO - 10.1115/FuelCell2008-65019
M3 - Conference contribution
AN - SCOPUS:77952609497
T3 - ASME 2008 6th International Conference on Fuel Cell Science, Engineering and Technology, FUELCELL 2008
SP - 723
EP - 734
BT - ASME 2008 6th International Conference on Fuel Cell Science, Engineering and Technology, FUELCELL 2008
PB - American Society of Mechanical Engineers (ASME)
T2 - ASME 2008 6th International Conference on Fuel Cell Science, Engineering and Technology, FUELCELL 2008
Y2 - 16 June 2008 through 18 June 2008
ER -
