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Politics : Politics of Energy
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To: RetiredNow who wrote (4464)1/29/2009 6:52:57 PM
From: TimF   of 86356
 
Hydrogen has a lot of drawbacks, which make me somewhat skeptical.

But its one big advantage is energy density. At least energy per pound.

I'm not sure how it does in terms of energy per volume compared to batteries. Uncompressed or minimally compressed hydrogen gas would be worse. But highly compressed hydrogen, liquid hydrogen, or possibly hydrogen stored in liquid or solid compounds might be ok by that measure.

If you didn't have the storage, and transportation problems of hydrogen, then I would probably look to it as a solution more than I would look to batteries, but hydrogen is hard to transport and store because of its low density, because its small molecule size means it can escape containers, and because in the process of escaping from metal containers it can make them brittle. Those issue are enough for me to consider it a less likely solution.
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