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Fuel cell

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A Fuel Cell is a device that converts the Chemical energy from a fuel into electricity through a chemical reaction with oxygen or another Oxidizing agent. Fuel cells are different from batteries in that they require a continuous source of fuel and oxygen/air to sustain the chemical reaction. – PowerPoint PPT presentation

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Title: Fuel cell


1
The Complete Guide About Fuel Cell
2
Introduction
  • A Fuel Cell is a device that converts the
    Chemical energy from a fuel into electricity
    through a chemical reaction with oxygen or
    another Oxidizing agent.
  • Fuel cells are different from batteries in that
    they require a continuous source of fuel and
    oxygen/air to sustain the chemical reaction.

3
  • There are many types of fuel cells, but they all
    consist of an anode a cathode  and an electrolyte
    that allows charges to move between the two sides
    of the fuel cell.
  • Fuel cells are used for primary and backup power
    for commercial, industrial and residential
    buildings and in remote or inaccessible areas.
    They are also used to power fuel-cell vehicles,
    including forklifts, automobiles, buses, boats,
    motorcycles and submarines.

4
How do Fuel cells work?
  • The purpose of a fuel cell is to produce an
    electrical current that can be directed outside
    the cell to do work,
  • single fuel cell consists of three parts
  • 1. Anode (that is a negative electrode that
    provides electrons).ssss
  • 2. An electrolyte in the center.
  • 3. Cathode (a positive electrode that accepts
    electrons).

5
  • The hydrogen is supplied to the fuel cell anode
    catalyst on the anode help separate the hydrogen
    atoms into protons, hydrogen ions and electrons.
  • The electrolyte in the center allows only the
    proton to pass through the electrolyte to the
    cathode side of the fuel cell.

6
  • These electrons from the hydrogen cant pass
    through the electrolyte and hence pass through a
    circuit joined between anode and cathode hence
    in turn generate electricity that passes through
    that circuit.
  • As oxygen flows into fuel cell cathode, another
    catalyst causes oxygen protons and electrons to
    combine to produce pure water heat.

7
Types of fuel cell
  • 1.Proton Exchange Membrane Fuel Cells (PEMFC)
  • 2. Direct Methanol Fuel Cells (DMFC)
  • 3. Phosphoric Acid Fuel Cells (PAFC)
  • 4. Alkaline Fuel Cells (AFC)
  • 5. Solid Oxide Fuel Cells(SOFC)
  • 6. Molten Carbonate Fuel cells (MCFC)

8
Proton Exchange Membrane Fuel Cells (PEMFC)
  • Proton exchange membrane fuel cells, also known
    as polymer electrolyte membrane (PEM) fuel cells
    (PEMFC), are a type of fuel cell being developed
    for transport applications as well as
    for stationary fuel cell application
     and portable fuel cell application.

9
Direct Methanol Fuel Cells (DMFC)
  • Direct-methanol fuel cells or DMFCs are a
    subcategory of proton-exchange fuel cells in
    which methanol is used as the fuel.
  • Their main advantage is the ease of transport of
    methanol, an energy-dense yet reasonably stable
    liquid at all environmental conditions.

10
Phosphoric Acid Fuel Cells (PAFC)
  • Phosphoric acid fuel cells (PAFC) are a type
    of fuel cell that uses liquid phosphoric acid as
    an electrolyte. They were the first fuel cells to
    be commercialized.

11
Alkaline Fuel Cells (AFC)
  • The alkaline fuel cell (AFC), also known as
    the Bacon fuel cell after its British
    inventor,AFCs consume hydrogen and pure oxygen
    producing potable water, heat, and electricity.
    They are among the most efficient fuel cells,
    having the potential to reach 70.

12
Solid Oxide Fuel Cells(SOFC)
  • A solid oxide fuel cell (SOFC) is
    an electrochemical conversion device that
    produces electricity directly from oxidizing a
    fuel. Fuel cellsare characterized by their
    electrolyte material,
  • The SOFC has a solid oxide or ceramic electrolyte.

13
Molten Carbonate Fuel cells (MCFC)
  • Molten carbonate fuel cells (MCFCs) are currently
    being developed for natural gas, biogas (produced
    as a result of anaerobic digestion orbiomass
    gasification), and coal-based power plants
    for electrical utility, industrial, and military
    application.

14
Advantages Of Fuel Cells
  • Less Greenhouse Gas Emissions Fossil fuels do
    emit a lot of greenhouse gases. Same is not
    emitted by the fuel cells.
  • Fuel cells have a higher efficiency than diesel
    or gas engines.
  • Fuel cells can be responsive to changing
    electrical loads.
  • The power densities are high values.
  • Fuel cells provide high quality DC power.
  • Most fuel cells operate silently, compared to
    internal combustion engines.

15
Disadvantages Of Fuel Cells
  • High costs compared to other energy systems
    technology.
  • Operation requires a consistent fuel supply.
  • The technology is not yet fully developed and few
    products are available.
  • Some fuel cells use expensive materials.

16
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