CHEMISTRY fuel cells

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  • Advantages
    • Fuel cells
      • Disadvantages
        • Very expensive
        • Contain toxic chemicals in electrodes and electrolyte which could harm environment if not recycled
        • Use hydrogen which is flammable gas so hard to trasnport
        • Production of hydrogen may cause pollution
    • only waste product from cell is water
    • They produce electricity continuously (as long as fuel supplied)
  • Rechargeable cells
    • Disadvantages
      • They go flat and need to be recharged regularly
      • Contain toxic chemicals that could harm environment if not recycled
    • Advantages
      • Much cheaper than fuel cells

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