Nano storage

Two crucial properties of a hydrogen storage material for future fuel cells and other hydrogen-powered devices might be met by titanium-coated carbon nanotubes according to Taner Yildirim and colleagues at the US National Institute of Standards and Technology and Turkey's Bilkent University. An efficient hydrogen storage material must be able to adsorb or otherwise trap hydrogen molecules adequately and must also be willing to relinquish the gas on demand. Earlier research has shown that nanotubes could be 6% efficient, but this is an obstacle to commercial viability, according to Yildirim. Now, he and his colleagues have shown that the presence of titanium atoms allows a nanotube to amass 8% of its weight in hydrogen molecules rather than 6% and so tip the balance towards the development of these materials for hydrogen storage.