This document provides information about fuel cells including what they are, their main parts, and how they work. It specifically discusses the following: - Fuel cells convert chemical energy from a fuel into electricity through a reaction with oxygen. The main parts are the anode, cathode, electrolyte, and catalyst. - Hydrogen is typically used as fuel at the anode. The cathode conducts electrons back from the external circuit. A catalyst speeds up the chemical reaction. - In the basic working, hydrogen ions pass through the electrolyte to the cathode while electrons travel through an external circuit. At the cathode, hydrogen ions and electrons reunite with oxygen to form water. - Hydrogen peroxide

1. Rohan Lakhani-150110106029
Karan Ladani-150110106028
G H PATEL COLLEGE OF ENGINEERING
& TECHNOLOGY
Subject: Physics
Topic: Fuel Cell
Guided By Prepared By
Prof.Smita Joshi

2. What is Fuel Cell?
 Fuel cell is a device that converts chemical
energy from a fuel into electricity through a
chemical reaction with oxygen or another
oxidizing agent

3. Parts of Fuel Cells
 There are four main part of Fuel Cells
1. Anode
2. Cathode
3. Electrolyte
4. Catalyst

4. Anode
 Anode is negative electrode of Fuel Cell.
 In most fuel cells, hydrogen is used as the
negative electrode in pure form or impure
hydrogen is taken as obtained from hydrocarbon
fuel, such as natural gas, liquefied petroleum gas.

5. Cathode
 Cathode is positive electrode of cell.
 It conducts the electrons back from the external
circuit to the catalyst, where they can
recombined with the hydrogen ions and oxygen to
form water.

6. Catalyst
 To speed up the chemical reaction, a catalyst is
included in the electrodes. The best catalyst are
finally divided platinum or other platinum like
metal deposited on or incorporated porous
electrode material.

7. Diagram of normal Fuel cell

8. Working of Fuel cells
 Basically, two principal chemical reactions occur
at the interface of the three segments.
 The net result of the two reactions is that , when
fuel is consumed, water is formed and an electric
current is produced which can be use to power
electrical devices, normally referred to as the
load.

9.  At the anode, a catalyst oxidize the hydrogen fuel
into positively charged ion and negatively charged
electron.
 The electrolyte(KOH) allows the protons to travel
to the cathode but blocks the electrons. Thus, the
electrons travel through the wire creating the
electric current,
 The ions on reaching the cathode reunite with the
electrons, and the two reacts with a third
chemical, oxygen, to create water.

10. H2O2 Fuel Cell
 Hydrogen peroxide(HO) is commonly used as an oxidizer in
rocket. Propulsion and air independent power system.
 In H2O2 fuel cells, nickel and silver are used as catalyst for
hydrogen and oxygen respectively.
 When used to produce energy, hydrogen peroxide creates
only pure water and oxygen as a by product, so it is
considered as clean energy, like hydrogen.
 However, unlike hydrogen, H2O2 exists in liquid form at
room temperature, so it can be easily stored and
transported.

11. THANK
YOU
Reference:-
Engineering Physics
-by vijayakumari