October 2012
Intermediate to advanced
680 pages
22h 25m
English
Content preview from Advances in Polymer Nanocomposites
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Polymer nanocomposites in fuel cells
H.-W. Rhee and L.-J. Ghil, Sogang University, South Korea
Abstract:
Polymer electrolyte membrane fuel cells (PEMFCs) operating at room temperature have two major problems: (a) easy poisoning of the Pt catalyst by CO and (b) direct methanol fuel cells have a large fuel crossover. Considerable attention has been spent on PEMFCs operating at high temperatures. The US Department of Energy set a target conductivity of 0.1 S/cm at 120 °C and 50 % relative humidity. In order to meet this criterion, the most promising approach may be to use nanocomposites of sulfonated polymer electrolyte membranes with inorganic compounds such as hygroscopic metal oxides and solid proton conductors such as heteropolyacids, ...
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