Water management in a direct methanol fuel cell system

Details Water management in a direct methanol fuel cell system Water management in a direct methanol fuel cell system

2004-06-04

2008-11-18

Crepeau, Jonathan (Department: 1795)

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

C429S006000, C429S006000, C429S006000, C429S006000, C429S006000

Reexamination Certificate

active

07452625

ABSTRACT:
A compact water management module for a direct methanol fuel cell (DMFC) system is provided. The module is a set of plates, typically two or more plates. Two of the plates are sandwiched together and enclose a membrane. The membrane is permeable to air or to water vapor. In another embodiment, both membranes are utilized. The cathode output stream of the DMFC stack feeds into one of the plates. One output of the module is water that is re-used as anode input stream to the DMFC stack. Another output of the module is the unused air that is vented out. The module is an elegant solution that improves the overall efficiency of a DMFC system. In addition, the module is small in size and can easily be stacked and integrated with a DMFC stack, a mixing device, a carbon dioxide separation device and/or a methanol source.

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