Answer:
Components of Fuel cell are Hydrogen and Oxygen gases.
Step-by-step explanation:
Fuel cells are electrochemical devices which converts chemicals i.e. a fuel like H₂ and oxidants like O₂ into direct current (D.C).
As we know when hydrogen is reacted with oxygen it produces water along with heat. Same reaction is carried out in fuel cells in a very controlled way.
The Hydrogen gas is oxidized at anodes to convert it into H⁺ ions and electrons.
At Anode:
2 H₂ → 4 H⁺ + 4 e⁻
These electrons are passed through external circuit to Cathode. Meanwhile, the H⁺ ions passes through the porous anode to electrolyte to cathode chamber.
The electrons arrived at cathode reduces oxygen gas to O²⁻.
At Cathode:
O₂ + 4 e⁻ → 2 O²⁻
In cathode chamber O²⁻ reacts with H⁺ to produce water.
2 O²⁻ + 4 H⁺ → 2 H₂O
This water produced is utilized by Astronomers in Satellites.