This guide provides an overview of fuel cells and their potential benefits. It covers the basics of fuel cells, their energy efficiency, their environmental impact, and their applications. It also discusses the advantages and disadvantages of fuel cells, and provides information on the types of
A fuel cell is an electrochemical cell that converts the chemical energy of a fuel and an oxidizing agent into electricity through a pair of redox reactions. Fuel cells are different from most batteries in requiring a continuous source of fuel and oxygen to sustain the chemical reaction, whereas in a battery the chemical energy usually comes from substances that are already present in the battery. Fuel cells can produce electricity continuously for as long as fuel and oxygen are supplied.