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A fuel cell is a continuous and direct converter of chemical energy into electricity, heat and water by means of electrochemical oxidation-reduction reactions.
Between the anode which emits the electrons and the cathode which consumes them there exists a electrical tension. A fuel cell is an assembly of elementary cells each consisting of an anode, catalysts, a membrane and a cathode. To increase power, you "play" on the number of cells (which raises the voltage) or on their surfaces (on which the intensity depends).
The anode is fed with hydrogen which breaks down on coming into contact with the catalyst into electrons and protons. These protons pass through a membrane which is a product of PEM technology (Proton Exchange Membrane).
The cathode itself is fed by oxygen from the ambient air. The protons and electrons which are the product of the breakdown of the hydrogen also make contact with it. The hydrogen is then recomposed, giving rise, along with the oxygen, to water and heat. The protons and the ele
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