Quote:
Originally Posted by rkzenrage
|
Do they address hydrogen's
diffusion through metals concerns? This link is to a technical paper, not necessarily clear to a layman like me, but there does seem to be a real problem with storage, especially at elevated temperatures (cryo has less of a problem this way), of gaseous hydrogen.
What I make of it is that in simple terms, the H2 molecule reacts with the surface of the metal of its storage container to break apart into single hydrogen atoms whose minuscule size permits them to diffuse into the metal's crystalline structure and eventually to head right on out.
Too, there's metal-hydride storage, trying to take advantage of this property of gaseous hydrogen, but questions of weight and of energy density need to be answered satisfactorily.