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BATTERIES

BATTERIES. TYPES OF BATTERIES. DANIEL CELL. FUEL CELL. DRY CELL (ZINC –CARBON) Leclanche Cell. ALKALINE CELL. LEAD-ACID CELL. Lead –acid has 6 electrochemical cells, each generating 2V. Reactions:. ANODE (Negative): Pb → Pb 2+ + 2e

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BATTERIES

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  1. BATTERIES

  2. TYPES OF BATTERIES • DANIEL CELL

  3. FUEL CELL

  4. DRY CELL (ZINC –CARBON)Leclanche Cell

  5. ALKALINE CELL

  6. LEAD-ACID CELL • Lead –acid has 6 electrochemical cells, each generating 2V.

  7. Reactions: • ANODE (Negative): Pb → Pb2+ + 2e The Pb2+ producedwill reacts with sulfuric acid to form a precipitate of lead sulfate which builds up on the plates. Pb2+ SO42- → PbSO4

  8. Reactions: • CATHODE (positive): PbO2 + 4H+ + 2e → Pb2+ + 2H2O The Pb2+ producedwill reacts with sulfuric acid to form a precipitate of lead sulfate which builds up on the plates. Pb2+ SO42- → PbSO4

  9. Rechargeable • Lead-acid batteries are rechargeable. The act as an electrochemical and electrolytic cell. • By passing electric current back to the cell, Pb2+can be converted to Pb and PbO2. 2PbSO4 + 2H2O → PbO2 + 4H+ + 2 SO42-

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