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Phosphoric Acid Fuel cell. Used in hospitals, nursing homes and for all commercial purposes Electrolyte: Liquid Phosphoric acid Catalyst: platinum Electrical efficiency of 40% Advantages :using impure hydrogen as fuel and 85% of the steam can be used for cogeneration. Working Diagram.

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Presentation Transcript
phosphoric acid fuel cell
Phosphoric Acid Fuel cell
  • Used in hospitals, nursing homes and for all commercial purposes
  • Electrolyte: Liquid Phosphoric acid
  • Catalyst: platinum
  • Electrical efficiency of 40%
  • Advantages :using impure hydrogen as fuel and 85% of the steam can be used for cogeneration
contd
Contd …
  • The anode and cathode reactions are the same as those in the PEM fuel cell with the cathode reaction occurring at a faster rate due to the higher operating temperature.
  • The increased temperature also imparts a slightly higher tolerance to impurities and phosphoric acid cells can function with 1-2 per cent carbon monoxide and a few ppm of sulphur in the reactant streams.
  • Simple construction, stability and low electrolyte volatility
disadvantages
Disadvantages
  • Disadvantages: uses expensive platinum as catalyst
  • Large size and weight
  • Low power and current
  • Existing PAFC’s have outputs of 200kw and 1Mw are being tested

http://www.toshiba.co.jp/product/fc/fce/nature.htm

imp links
IMP. LINKS
  • Link showing the working of a battery with animations:
  • http://www.dlt.ncssm.edu/core/c17.htm
  • Link showing complete overview of phosphoric acid fuel cell :
  • http://www.ch2bc.org/FCHandbook/TechOver1-1FCDesc.htm
  • Link showing the history of Phosphoric Acid Fuel Cell
  • http://americanhistory.si.edu/fuelcells/phos/pafcmain.htm#TOP
applications
Applications
  • http://www.fossil.energy.gov/programs/powersystems/fuelcells/fuelscells_phosacid.html
  • Industrial and other commerical applications are in server:

Energy/FC_Materials.doc

activity
Activity
  • Operating Temperature of Phosphoric Acid Fuel Cell?
  • 80C
  • 600C
  • 205C
  • 800-1000C
activity1
Activity
  • Electrolyte in phosphoric Acid Fuel Cell?
  • Ion exchange membrane
  • Phosphoric Acid
  • Ceramic
  • Liquid Molten Carbonate
activity2
Activity
  • What is the catalyst used in Phosphoric Acid fuel Cell?
  • Nickel
  • Platinum
  • Pervoskites
  • None
activity3
Activity
  • What Fuel can be used in Phosphoric Acid Fuel Cell?
  • H2
  • CH4 +H2O
  • CO+H2O
  • All of the above