Question

Write two applications of fuel cells.

Describe the advantages of fuel cells.

Write an advantage of a fuel cell.

Answer 1

1. The fuel cells are used on an experimental basis in automobiles.
2. The fuel cells are used for electrical power in the space programme.
3. In spacecraft, the fuel cell is operated at such a high temperature that the water evaporates at the same rate as it is formed. The vapour is condensed, and the pure water formed is used for drinking by astronauts.
4. In the future, fuel cells can possibly be explored as power generators in hospitals, hotels, and homes.

Answer 2

Compared to conventional galvanic cells and conventional methods for producing electrical energy through fuel combustion, fuel cells are a promising source of electrical energy. Here are a few significant benefits of fuel cells.

1. High efficiency: Fuel cells have the potential to be more efficient than traditional methods of producing electrical energy through the burning of fuels like hydrogen, carbon fuels, or nuclear reactors, since they immediately transform a fuel’s energy into electrical energy. Though an efficiency of 60-70% has been achieved thus far, fuel cells should theoretically be 100% efficient. A traditional approach that involves burning fuel has an efficiency of only 40% or so.
2. Pollution-free working: A fuel cell’s byproducts don’t contribute to any pollution issues. An H₂-O₂ cell, for instance, just generates water, which is not at all capable of causing any pollution issues.
3. Continuous supply of energy: Fuel cells can supply energy continuously as long as the fuels are fed into them. Contrary to conventional cells or batteries, these cells do not involve any drop in voltage or current during long usage.