Yes, there is alot more hydrogen in the universe than there is nitrogen, our current problem on this planet however is that hydrogen tends to bond with nearly everything and the process of seperating hydrogen out of say water requires more electricity than a hydrogen fuel cell can produce. But, our air is FULL of pure molecular nitrogen (a.k.a. "Dynitrogen")!
So why not study nitrogen fuel cells as opposed to hydrogen? I am sure there is a way to release electrons just as hydrogen does in fuel cells in some sort of a catalyst.
That way, as long as the catalyst doesn't become contaminated from other elements in the air, finding the fuel is not an issue...