Alcohol fuels have significant advantages in terms of energy density over hydrogen in a sustainable energy future. However, their implementation in fuel cells has been limited because of the permeability of polymer membrane electrolytes to these fuels and CO poisoning of the Pt-Ru catalysts. The inorganic proton conducting electrolyte, CsH2PO4 , is used in a fuel cell and integrated with a Cu-ZnO/Al2O3 steam reforming catalyst layer in the anode chamber. Using methanol-water mixtures with 43 vol % methanol, peak power densities at ambient pressures of as high as 225 mw/sq cm were obtained, ∼ 85% that obtained from neat hydrogen. Result obtained using reformate fuel suggest substantially greater power outputs will be obtained with even marginal improvements in reformer catalyst activity, and demonstrate the tolerance of the Pt-Ru catalyst to high concentrations of CO in the fuel stream at these temperatures. This is an abstract of a paper presented at the 231th ACS National Meeting (Atlanta, GA 3/26-30/2006).
|Original language||English (US)|
|Journal||ACS National Meeting Book of Abstracts|
|State||Published - Jun 28 2006|
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