Performance improvement in direct methanol fuel cells using a highly porous corrosion-resisting stainless steel flow field

Power generation with direct methanol fuel cell (DMFC) systems requires only simple equipment, and has the important advantage of using a liquid fuel with higher energy density and easier handling characteristics than hydrogen. However, the power output of DMFC is lower than hydrogen fuel cells. To...

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Bibliographic Details
Published in:International journal of hydrogen energy 2008-06, Vol.33 (11), p.2850-2856
Main Authors: Shudo, Toshio, Suzuki, Kensuke
Format: Article
Language:English
Subjects:
Applied sciences
Diffusion polarization
Direct methanol fuel cell
Energy
Energy. Thermal use of fuels
Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc
Exact sciences and technology
Flow field
Fuel cells
Porous stainless steel
Separator
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Summary:Power generation with direct methanol fuel cell (DMFC) systems requires only simple equipment, and has the important advantage of using a liquid fuel with higher energy density and easier handling characteristics than hydrogen. However, the power output of DMFC is lower than hydrogen fuel cells. To improve the power output of DMFC it is very important to reduce diffusion polarization at higher current density conditions. This research used a corrosion-resisting type porous stainless steel developed based on the technology for metal–hydride battery electrodes in the separator flow fields for reactants and products in a single cell DMFC and analyzed its influence on performance characteristics.
ISSN:0360-3199
1879-3487
DOI:10.1016/j.ijhydene.2008.03.021