Fuel Cells

• Cells and batteries use a chemical reaction to produce electricity
• Eventually the reactants are used up and the electricity stops
• Hydrogen cells have air or pure oxygen inside
• Hydrogen - oxygen cell structure:

  • The electrolyte is the centre (a solution that ions can move through)
  • In this case the electrolyte is Potassium Hydroxide
  • Either side of that there is a negative anode and a positive cathode (electrodes)
  • They are connected by a wire which allows electrons to move around from the anode to the cathode
  • Both of the electrodes are made from porous carbon
  • There is an anode and a cathode compartment, each with an inlet
  • Heat leaves via these inlets