A fuel cell is an electrochemical cell that converts the chemical energy of a fuel (often hydrogen) and an oxidizing agent (often oxygen) into electricity through a pair of redox reactions. ... Fuel cells can produce electricity continuously for as long as fuel and oxygen are supplied.

Which is a fuel cell?

A fuel cell is a device that generates electricity through an electrochemical reaction, not combustion. In a fuel cell, hydrogen and oxygen are combined to generate electricity, heat, and water. ... A fuel cell is composed of an anode, cathode, and an electrolyte membrane.

What are fuel cells used for?

Fuel cells can be used in a wide range of applications, including transportation, material handling and stationary, portable, and emergency backup power. Hydrogen can be used in fuel cells to generate power using a chemical reaction rather than combustion, producing only water and heat as byproducts.