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Tuesday, July 17, 2007



Cooler Fuel Cells

"Researchers at the University of California, Davis, have developed a novel method to fabricate nanometric oxides that exhibit enhanced conductivity by a different mechanism. Conduction in these materials (e.g., cubic zirconia and other materials with similar properties) takes place by protonic movement as opposed to ionic mobility, making it possible to operate a fuel cell at much lower temperatures. The marked reduction of the resistivity in these materials at low temperatures are comparable to that typical of other protonic conductors, but with the advantage of superior mechanical properties, chemical stabilities, and the lack of need for a catalyst."[1]

This discovery translates into fuel cells that run around 50°C to 100°C with no catalyst, meaning that they could be cheaper and easier to use in practice.

The full article is available at Applied Physics Letters.

[1] Fuel Cells Using Low-Temperature Conducting Materials


- posted by Jim @ 16:51 EST