What Is Fuel Cell?
- May 04, 2018 -

What is Fuel Cell?


A device that directly converts the chemical energy released by a fuel during combustion into electrical energy. The difference from the battery is that it can continuously replenish the fuel and oxidant separately from the outside to the two electrode areas without charging. The fuel cell is composed of four parts, such as a fuel (for example, hydrogen, methane, etc.), an oxidant (for example, oxygen, air, etc.), an electrode, and an electrolyte. Its electrodes have catalytic properties and are porous structures to ensure a large active area. In operation, the fuel is passed to the negative electrode, and the oxidant is passed to the positive electrode. Each of them is electrochemically reacted under the catalysis of the electrode to obtain electrical energy.


The fuel cell directly converts the energy released from the combustion reaction into electrical energy, so its energy utilization rate is high, which is approximately equal to more than twice the thermal efficiency. In addition it has the following advantages:

1 Lightweight equipment;

2 No noise, very little pollution;

3 Can run continuously;

4 Unit weight output power is high.

Therefore, it has been applied in the voyage of the universe, and it has demonstrated wide application prospects in various fields of military and civilian use.