Secondary cells

Definition

Secondary cells are rechargeable batteries that can be recharged and used multiple times. They undergo reversible chemical reactions to restore their charge.

5 Must Know Facts For Your Next Test

1. They are also known as storage or accumulator cells.
2. The most common types include lithium-ion, nickel-cadmium, and lead-acid batteries.
3. Charging involves applying an external electrical current to reverse the discharging reaction.
4. They offer a more sustainable alternative to primary cells since they can be reused many times.
5. The efficiency and lifespan of secondary cells depend on factors like depth of discharge, charging cycles, and temperature.

Review Questions

• What is the main advantage of secondary cells over primary cells?
• Name three common types of secondary cells.
• How does the process of recharging work in secondary cells?

Related terms

Primary Cells: Batteries that are designed for single-use and cannot be recharged.

Electrolyte: A substance that produces an electrically conducting solution when dissolved in water, facilitating the flow of ions in a battery.

Anode: The electrode where oxidation occurs during the discharging process in a battery.