Hydrogen fuel cells

[winter]

Hello everyone,

I am doing a paper on hydrogen fuel cells and I want it to be the BEST in the class. (I am a college freshman.) So I need some information. I hope that there is someone who can help me out.

First of all, how does a hydrogen fuel cell work? How does it power stuff?

Why are people so excited about them? I heard that it was because hydrogen fuel cells do not give out pollution. Is this right?

What are some of the problems associated with using fuel cells and what are some possible solutions? (I do know that hydrogen has a low energy efficiency. Could someone please elaborate on that?)

I don't neccessarily need someone to reply with a long post...I have nothing against reading stuff for myself, so if you know of some good places on the internet I should go to, that would be fine too.

Thanks in advance for your help!

See ya!

-- Winter ^_^

[Shadow]

Why dont you just google it?That would be the easiest thing to do.

[RobJim]

http://en.wikipedia.org/wiki/Fuel_cell

One thing you should be aware of is that fuel cells are NOT energy sources! Therefore they are not replacements for gasoline unless you can find some way to input energy into them, like through solar or nuclear power. This is an extremely common mistake people make - to assume fuel cells can simply replace gasoline as energy sources for the engine. They can, but you need to put the energy into them first. Gasoline comes ready to burn with plenty of stored energy when you find it.