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Consider the following materials: 1. Lead peroxide 2. Sponge lead 3. Dilute sulphuric acid Which of the above are active materials of a lead-acid battery?

Consider the following materials: 1. Lead peroxide 2. Sponge lead 3. Dilute sulphuric acid Which of the above are active materials of a lead-acid battery? Correct Answer 1, 2 and 3

  • A Lead Acid cell is a battery that uses sponge lead and lead peroxide for the conversion of chemical energy into electric power.
  • It is commonly used in power stations and substations.
  • The container is made of glass, lead-lined wood.
  • The plate of load acid cell consists of some form of grid mode of lead and active material.


Active material: The material in a cell that takes active participation in a chemical reaction during charging or discharging.

For a lead-acid cell they are:

  • Lead peroxide (PbO2) = Positive active material
  • Sponge lead (Pb) = Negative active material
  • Dilute sulfuric acid = Electrolyte

 

Notes:

  • Separators are thin sheets of non-conducting materials made of porous rubbers, or molecules of glass fiber place between positive and negative, to insulate them from each other.
  • Battery terminals: It has two terminals ie. A positive terminal with a diameter of 17.5 mm at the top is slightly larger than the negative terminal which is 16 mm in diameter.

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