Email This Post Email This Post Print This Post Print This Post Post a Comment

Hydrogen Storage Milestone

Nanotechnology is at work once again. The US Department of Energy’s target of 45 grams per liter for hydrogen storage has almost been met using graphene sheets that are one atom thick connected by columns of carbon nanotubes. Hydrogen is stored in the gaps between the nanotubes and the graphene sheets. The researchers also added lithium ions to the structure for increased storage capacity.

While they haven’t built the ‘pillared graphene’ structure yet, the scientists’ calculations indicate that it could store up to 41 g of hydrogen per litre, just short of the DOE target of 45 g per litre.

“Our material is capable of hosting a large number of hydrogen molecules without the aid of external pressure,” says Froudakis. “Thus the material [should be] safer for usage on automobile applications and will provide faster loading times than any other existing material.”

If the structure can be built and the predictions are correct, the new material could overcome one of the major drawbacks that has prevented hydrogen from being used extensively as a fuel for automotive applications, say the scientists.

via acspublications, physorg

Tags: ,

Related Articles