[jessaustin]

I feel that if anyone took hydrogen seriously, they'd start talking about anhydrous ammonia. This compound actually contains more hydrogen by volume and pressure than elemental hydrogen does. It doesn't have the embrittlement issues that elemental hydrogen has. Ammonia liquefies at a much higher temperature and has a much higher heat of vaporization, which makes it easier to handle. It is a hazardous fuel, but not really more so than gasoline and definitely less so than elemental hydrogen. Anyway, there is already a well-developed infrastructure for handling anhydrous ammonia, because it is regularly used in agriculture. Any cheap and environmentally friendly process that produces hydrogen also produces ammonia, because ammonia is just hydrogen plus nitrogen.

Because I very rarely see mention of ammonia as a fuel, I conclude that no one is seriously attempting to develop hydrogen fuel cells.