Fuente: http://ittipsfaqs.blogspot.com/2013/07/como-ajustar-todas-las-imagenes-de-un.html UA-60596296-2

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Wednesday, March 18, 2015

'Defective' graphene makes for super-efficient fuel cells

'Defective' graphene makes for super-efficient fuel cells




Like a runway model, graphene is nice to look at, but can't do a whole lot. When you add a few warts and imperfections, however, it becomes more interesting -- specifically, it has the potential to make fuel cells better and cheaper.
Scientists fromNorthwestern University and other institutions were toying with the material as a hydrogen fuel cell membrane, and found that by knocking out at least four carbon atoms from the normally pristine structure, it performed vastly better. A large number of protons (and nothing else) slipped through imperfections in the atom-thick material in just a few seconds, efficiently generating electricity.

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