There are several kinds of fuel cells, but in principle, every
fuel cell operates something like a battery. It will produce
energy in the form of electricity and heat as long as fuel is
supplied. cell consists of two electrodes sandwiched around an
electrolyte. Oxygen passes over one electrode and hydrogen over
the other, generating electricity, water and heat. Hydrogen fuel
is fed into the “anode” of the fuel cell. Oxygen (or air) enters
the fuel cell through the cathode. Encouraged by a catalyst, the
hydrogen atom splits into a proton and an electron, which take
different paths to the cathode. The proton passes through the
electrolyte. The electrons create a separate current that can be
utilized before they return to the cathode to be reunited with
the hydrogen and oxygen in a molecule of water. A fuel cell
system which includes a “fuel reformer” can utilize the hydrogen
from any hydrocarbon fuel – from natural gas to methanol or even
gasoline. Since the fuel cell relies on chemistry and not
combustion, emi