Fuel cell and it's types

1. FUEL CELLS
BY
Mohammed kasim imthiyas – 180021601060
Mohammed khaleelur Rahman – 180021601061
Mohammed Muzaffar - 180021601062
MECX-32
AUTOMOBILE ENGINEERING

2. FUEL CELLS
 A fuel cell is a device that generates electricity through an electrochemical reaction.
 In a fuel cell, hydrogen and oxygen are combined to generate electricity, heat, and water.
 They work like batteries, but they do not run down or need recharging. They produce electricity and
heat as long as fuel is supplied.
 A fuel cell is composed of an anode, cathode, and an electrolyte membrane.

3. FUEL CYCLE
Fuel cell works by passing hydrogen through the anode of a fuel
cell and oxygen through the cathode

4. MAJOR BENEFITS
• Low-to-Zero Emissions
• High Efficiency
• Reliability
• Fuel Flexibility
• Energy Security
• Durability
• Scalability
• Quiet Operation

5. Polymer electrolyte membrane fuel cells
 Type of fuel cell being developed mainly for transport applications.
 Distinguishing features include lower temperature/pressure ranges (50 to 100 °C) and a
special proton-conducting polymer electrolyte membrane.
 The protons pass through the membrane to the cathode side of the cell while the
electrons travel in an external circuit, generating the electrical output of the cell.

6. Polymer electrolyte membrane fuel cells
FUEL CELL NAME ELECTROLYTE EFFICIENCY
Proton-exchange membrane fuel cell Polymer membrane (ionomer) 50%-70%

7. Alkaline fuel cells
 Alkaline fuel cells consume hydrogen and pure oxygen, to produce potable water, heat,
and electricity.
 The fuel cell produces power through a redox reaction between hydrogen and oxygen.
 The two electrodes are separated by a porous matrix saturated with an aqueous alkaline
solution, such as potassium hydroxide (KOH).
 Because of this poisoning effect, two main variants of AFCs exist: static electrolyte and
flowing electrolyte.

8. Alkaline fuel cells
Alkaline fuel cell Aqueous alkaline solution 60%-70%
FUEL CELL NAME ELECTROLYTE EFFICIENCY

9. Regenerative fuel cell
 It is a fuel cell run in reverse mode, which consumes electricity and chemical B to produce
chemical A.
 A hydrogen fueled proton exchange membrane fuel cell, for example, uses hydrogen gas (H2) and
oxygen (O2) to produce electricity and water (H2O); a regenerative hydrogen fuel cell uses
electricity and water to produce hydrogen and oxygen.
 In this reverse mode, the polarity of the cell is opposite to that for the fuel cell mode.
 When an external voltage is applied, water at the anode side will undergo electrolysis to form
oxygen and protons.

10. Regenerative fuel cell
Regenerative fuel cell Polymer membrane (ionomer) <50%
FUEL CELL NAME ELECTROLYTE EFFICIENCY

11. THANK YOU