Alkaline Fuel Cells
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Questions and Answers

What is the electrolyte used in an alkaline fuel cell?

  • Aqueous solution of KOH (correct)
  • Concentrated phosphoric acid
  • Ceramic oxide
  • Molten carbonates

    • Why can't carbon-containing fuels be used in an alkaline fuel cell?

  • Carbon-containing fuels are incompatible with the electrolyte
  • CO2 formed reacts with the electrolyte, reducing efficiency (correct)
  • CO2 formed damages the catalyst
  • Carbon-containing fuels produce excess heat

    • What is the operating temperature range of a solid oxide fuel cell?

  • 100-160°C
  • 160-220°C
  • 650-1000°C (correct)
  • 600-650°C

    • What is the function of platinum in a phosphoric acid fuel cell?

    <p>Act as an electro-catalyst</p> Signup and view all the answers

    Why is a catalyst not required in a molten carbonate fuel cell?

    <p>Operates at high temperature where a catalyst is unnecessary</p> Signup and view all the answers

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