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Saturday, September 16, 2006



New material improves efficency

At the Challenges for the Hydrogen Economy symposium during the 232nd National Meeting of the American Chemical Society, James McGrath, Professor of Chemistry at Virginia Tech, announced his group's development of a PEM (Proton Exchange Membrane) material that retains conductivity during low humidity. "Up to now, a lot of water has been needed to assist the proton transfer process," said McGrath. "But, in the desert, that is pretty inefficient." The new polymer, alternating hydrophilic (SO3H) and a hydrophobic monomers sets, has an affinity to transport water that is 2 or 3 times higher than commercially available membranes. The group is also working on a method to easily produce using common equipment and methods.

(More info: PhysOrg)


- posted by Jim @ 20:31 EST