Lead-Acid Battery Dissolution and Precipitation Reactions
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Questions and Answers

What is the overall cell voltage of the Nickel-Metal Hydride (Ni-MH) batteries?

  • 1.2 V
  • 0.83 V
  • 1.35 V (correct)
  • 0.52 V

    • Which part of the battery is responsible for the reduction reaction in the Ni-MH batteries?

  • Anode
  • Discharge cut-off
  • Nominal voltage
  • Cathode (correct)

    • What are the main challenges associated with Ni-MH batteries mentioned in the text?

  • Low cost and abuse tolerance
  • High self-discharge and heat generation at high temperatures (correct)
  • Long life cycle and safety
  • Control of hydrogen loss and high specific energy

    • What discharge cut-off voltage is normally observed for the Ni-MH batteries?

    <p>1.0 V</p> Signup and view all the answers

    What is the overall cell voltage of the lead-acid battery?

    <p>2.04 V</p> Signup and view all the answers

    What is the main factor causing degradation of battery capacity in lead-acid batteries?

    <p>The depth of discharge (DOD) of the battery</p> Signup and view all the answers

    What is the chemical process involved in the dissolution of lead-acid batteries?

    <p>$PbO_2 + 4H^+ + 2e^- \rightarrow Pb^{2+} + 2H_2O(l)$</p> Signup and view all the answers

    What are the drawbacks of lead-acid batteries that impede their use?

    <p>Low specific energy, poor cold-temperature performance, and short calendar and lifecycle</p> Signup and view all the answers

    What were the dominant choice of battery chemistry for HEV in the past?

    <p>Nickel Metal Hydride (NiMH) Batteries</p> Signup and view all the answers

    What are some advantages of Lithium-ion batteries over NiMH batteries?

    <p>High power-to-weight ratio and high energy efficiency</p> Signup and view all the answers

    What type of batteries are mostly used in today's all-electric vehicles and PHEVs?

    <p>Lithium-ion batteries</p> Signup and view all the answers

    What are some considerations involved in EV battery pack design?

    <p>Energy density, weight, and cost</p> Signup and view all the answers

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