Poll: Hydrogen Feul Cells Vs The Combustion engine.

[neuromasser]

Well it doesn't take a rocket scientist to... oh. I guess it does.

 

[Dys]

Until the reaction takes place, the hydrogen is stored as H2 gas, positive H+ ions (probably as H30) ....why in gods name would they bother storing it as liquid hydrogen. You're aware that there is a bus line that runs of hydrogn fuel cells in perth, as well as a honda car available in california, what you're claiming still makes no sense whatsoever, there is so much evidence that is physicially works, we have working examples everywhere.

Liquid takes up far less room than gas, and again, you have yet to show how hydrogen wouldn't leak over time considering its size. It is the smallest element and so clearly storing it is an issue. How you are going to manage to store enough hydrogen for a hydrogen economy is beyond me unless you store it as a liquid, and then hydrogen embrittlement rears it's head. Simply put, you can't store sand using a siv, which is what is going on.

Ummmmm fuel cells use very little hydrogen, The one I was toying with last week used less than 0.1 millilitres in the 15 minutes we were running it (I mean, we couldn't even get a measurement as to how much it had used as it was so little). We weren't even using compressed H2, which is what you'd use in a real life situation (were were just running a current through water and collecting it at whatever pressure it felt like being at).

I don't have the numbers for hydrogen handy but I'm sure if you compressed it to a few hundred kPa it would take up very little room. I can't really comprehand why you would want or need to compress it to the liquid point. Hydrogen fuel cells are a very viable mobile power source, except for the whole they cost an assload and you need a lot of them thing.

 

[Balgus]

I'm not sold on hydrogen. To me, it's just a battery that's less convenient to recharge.

Though, I guess water is cleaner to dispose of than a worn out lithium polymer battery. Nope, I just checked. Lithium ion batteries are environmentally friendly. Bring on more efficient solar power.

electric cars tend to take over 5-12 hours to re-charge, hydrogen takes about 2-3 mins