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Document Number | 10280 |
|---|---|
Primary Title | The U.S. DOE High Temperature Membrane Program |
Author Name | Kopasz, J.; Garland, N.; Manheim, A. |
Author Affiliation | Argonne National Laboratory, Argonne, Illinois; U.S. Department of Energy, Washington, D.C.; U.S. Department of Energy, Washington, D.C. |
Published Date | 09/01/2007 |
Detailed Publish Date | September 2007 |
Page Count | 4 |
Document Type | REPORT |
Abstract | Membranes used in current Proton Exchange Membrane (PEM) fuel cells require thermal and water management systems to control temperature and keep the membrane humidified. These components increase the weight and volume of the fuel cell system and add complexity. Estimates of the cost of the humidification systems for current membranes range from $5 to $8 per kW, while the thermal management system is estimated to cost $3 to $4 per kW. These costs must be reduced to meet the DOE transporation fuel cell system cost target of $30 per kW for the complete powertrain. The cost and complexity of the thermal and water management systems could be minimized if the fuel cell operated at higher temperatures (up to 120 degrees C) and at lower relative humidity. Operation at 120 degrees C would also increase the tolerance of fuel cells to CO2, which would in turn reduce the cost of hydrogen from hydrocarbon sources because extraordinary steps would not be necessary to purify the hydrogen. |
Copyright Status | N - Not copyrighted, |
Document Owner | H |
