Why only hydrogen is regarded as fuel of future and not other elements?

Question

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)

In: 346

Answer 1

I know we’re talking about hydrogen as a fuel for internal combustion. But it’s also considered the nuclear fuel of the future. Hydrogen is (relatively) incredibly easy to fuse into heavier elements like helium and it potentially has energy densities that are orders of magnitude above any other fuel source. Combined with its effectively unlimited supply here on earth and you have a fuel that can effectively end energy shortages, although distribution will still be a big expense.