Define Fuel celll

Answer

**Step-by-Step Solution:**

1. **Definition of Fuel Cell**: A fuel cell is a device that converts chemical energy from fuels into electrical energy through an electrochemical reaction.

2. **Energy Conversion Process**: The fuel cell operates by using fuels such as hydrogen, methanol, or methane. During the reaction, these fuels undergo combustion, which releases energy.

3. **Direct Conversion to Electrical Energy**: Unlike traditional combustion engines that convert energy through mechanical means, fuel cells convert the energy directly into electrical energy. This process is more efficient and produces fewer pollutants.

4. **Example of a Successful Fuel Cell**: One of the most successful types of fuel cells is the hydrogen peroxide (H2O2) fuel cell, which is known for its efficiency and effectiveness in converting fuel into electricity.

5. **Conclusion**: In summary, a fuel cell is an efficient device that transforms the energy from fuel combustion directly into electrical energy, with hydrogen peroxide fuel cells being a notable example.

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