Chapter 21, Problem 37A

Interpretation Introduction

Interpretation: The advantages of a fuel cell over a lead storage battery need to be explained.

Concept Introduction: A fuel cell is an electrochemical cell that converts the chemical energy of the fuel to electrical energy. Here, redox reactions are responsible for the generation of electricity. Fuel cells require continuous energy sources of fuel and oxygen for a chemical reaction to take place. Thus, a fuel cell can produce electricity as long as there is a supply of fuel and oxygen.

Explanation of Solution

Fuel cells are designated to overcome the disadvantages of lead storage batteries. Fuel cells have renewable electrodes as fuel substances undergo oxidation as a result of which electrical energy is obtained. There is no need to recharge a fuel cell. Also, no air pollutants are emitted by fuel cells. There is also no noise at the time of use, it is considered a cost-effective method to generate electricity. A simple fuel cell involves the reaction of hydrogen and oxygen gas thus, the only product formed in the reaction is liquid water.

Therefore, the advantages of a fuel cell over a lead-storage battery are:

1. No need of recharging.
2. No air pollutants are emitted.
3. No noise pollution.
4. Cost-effective method to generate electricity.