Quote:
Originally Posted by serialk11r
If it's energy density you're worried about, then you should probably realize that hydrogen sucks in that department too because it has to be contained safely, and the fuel cells or other engine needed to convert hydrogen to mechanical power don't have much mass savings (if any at all) over cars now.
There is a lot of research going into batteries, and there are many proposed types of batteries that improve on energy density by several times, and batteries with increased durability as well. I don't know how much current gasoline powered drivetrains cost, but it is very possible that electric vehicles can become cost competitive in say 15 years.
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Energy to volume is a little better with batteries then hydrogen. Energy to weight even including the tank (not talking liquid hydrogen) is better with hydrogen. There is also the recharging vs refueling issue a few minutes with hydrogen, a few hours (at best) with batteries. I don't need as much range if if I can quickly refuel and be on my way.
Both would need infrastructure that doesn't currently exist, and neither are as good as gas when it comes to convience/power/range.