More efficient hydrogen storage in solids developed
Hydrogen would be a very environmentally friendly fuel for fuel cells or even normal gasoline engine technology. However, the hydrogen car so far fails in practice on two points: the production and storage of hydrogen, the latter in particular in the vehicle itself. But more effective gas storage could soon be available.
Hydrogen cannot easily be locked into a normal gas tank: it has the smallest molecules of any gas and, unlike more complex hydrocarbons such as butane or propane, or heavier gases such as oxygen and nitrogen, diffuses through the tank walls, whether they are made of metal or plastic. The storage capacity is also limited: at correspondingly high prere, the "shrinkage" through the tank walls becomes too strong.