Here is a new potential material for storing hydrogen. The new hydrogen storage system is applied for vehicles, based on lithium-coated bucky-balls.
The new material is promising in the way that it has a gravimetric storage density of 13 wt.% & mdash. This exceeds the storage target of the Department of Energy — with a total system gravimetric storage density of 9 wt.% and volumetric density of 70 grams/liter.
Via: Green Car Congress