I have basic idea of working of hydrogen fuel cell but why just hydrogen? Isn’t there any better or maybe cheaper alternative?
(I know it’s bit complex for but I would appreciate your answers)
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There are a few types of fuel which may be used more in the future. The advantage of hydrogen is that this is the easiest fuel to make from electricity. So if you have electric power but need a compact, easy to transfer fuel then hydrogen is the obvious answer. The other two candidates for this process is methane and ammonia. Methane takes a lot more energy to make so the process is less efficient. And ammonia is toxic. The current development looks to be to use hydrogen for private fuel sales such as cars, backyard generators, etc. and then ammonia for commercial entities such as for ships, airplanes, and larger generators. All of these fuels are small enough that they can be used with fuel cells but fuel cell technology seams to have been obsoleted by high efficiency batteries.
There are other fuels as well. We currently use a lot of bioethanol which comes from plants. We also have biodiesel which are made from plant oil. And even though it is a bit more complicated a lot of users of coal can use solid biofuel, usually made from wood. These are easier to use today as existing engines can fill up with these fuels without any modifications. But they do require a lot of agricultural area to make.
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