Zinc Air Batteries: Construction and Components
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Questions and Answers

What is the primary component of the anode in a zinc air battery?

  • Nickel wire mesh
  • Zinc granules (correct)
  • MnO2
  • Carbon

    • What is the purpose of the gelling agent in the anode?

  • To reduce the electrolyte amount
  • To immobilize the composite (correct)
  • To increase the surface area
  • To enhance the reaction rate

    • What is the role of the air access holes in the cathode?

  • To increase the surface area of the cathode
  • To reduce the voltage of the battery
  • To allow oxygen to enter the battery (correct)
  • To provide a pathway for electrolyte to flow

    • What is the primary function of the separator in a zinc air battery?

    <p>To prevent mixing of the anode and cathode materials</p> Signup and view all the answers

    What is the overall reaction that occurs in a zinc air battery?

    <p>Zn + 1/2O2 → ZnO + H2O + 2e-</p> Signup and view all the answers

    What is the advantage of a zinc air battery in terms of energy storage?

    <p>High energy density</p> Signup and view all the answers

    What is a disadvantage of zinc air batteries?

    <p>Limited power output</p> Signup and view all the answers

    What is the purpose of the MnO2 in the cathode?

    <p>To act as a catalyst</p> Signup and view all the answers

    What is the electrochemical reaction that occurs at the anode?

    <p>Zn → Zn2+ + 2e-</p> Signup and view all the answers

    What is the voltage of a zinc air battery?

    <p>1.4 V</p> Signup and view all the answers

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