Would hydrogen fuel cell or photovoltaic cell would be a better alternative to power an electric automobile?

Question

pls explain why

Answer 1

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Hydrogen is impractical, since large amounts of electricity is required to extract it, and the efficiency of the fuel suffers in the process. Considering this, it makes more sense just to use that same electricity to power the vehicle, via an efficient battery.
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Charging that same battery with photocells is the better answer of the two. While you can not get enough energy from a solar panel small enough to mount on the car itself, it is practical to charge EV batteries from larger panels mounted on a garage roof, and electric vehicle hobbyists are doing this today.
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Answer 2

Both are limited by the current technology and distribution systems. Photovoltaic cells produce a small current for a large surface are. Given hours of time and huge expanses of surface area you could only go a few miles until you would have to stop and let the batteries charge again. Hydrogen fuel cells are feasible, but there is no real distribution system for this fuel, and besides hydrogen is manufactured from petroleum just like gasoline. Since there are no real manufacturers of fuel cells, I think you are on the right track, but you will have to give technology a few more years to get the job done.

Answer 3

I think they both have drawbacks...

For a fuel cell, since elemental Hydrogen is almost nonexistant on Earth, u have to strip it from some H-rich source. (H2O and CH4, water and methane, are common). But it always costs more to strip it than you later get by 'burning' it (2nd law of thermo.), so a fuel cell is really just a battery.

For Pv, you need batteries too & they're an environmental problem.

Answer 4

depends, Electric would be better if there wsa a way to make a super effiecnt battery, Hydrogen is better if you can make it safe and affordable. I think there having problems seperating hydrogen into a pure state though, which is another problem with it