Abstract
Hydrogen isotope separation will be important for future hydrogen energy applications. The materials used in polymer electrolyte fuel cells (PEFCs), such as the hydrophobic support and Pt catalyst, are essentially the same to those used in the conventional isotope-separation method of water hydrogen chemical exchange. Hereby, deuterium (D) separation was performed with a PEFC. The separation was improved with increasing the water vapor and temperature. D was enriched into the dew water in the cell. The quantities of D conversion from the gas through the vapor to the dew water was measured. The conversion values were less than the simulated ones. This was attributed to the vapor pressure drop and the wetted catalyst surface by the water condensation.
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