Battery: galvanic (voltaic) cells in a series
Types of Cells:
- Primary cells: cannot be recharged
- Secondary cells: can be recharged
During discharge of any cell:
- The cell is a galvanic cell (spontaneous redox reaction occurs).
- Maximum voltage that can be delivered by the cell during discharge is equal to the electrode potential for the spontaneous redox reaction.
During recharge of a secondary cell:
- The cell is an electrolytic cell (non-spontaneous redox reaction occurs).
- The voltage that needs to be applied during recharge must be greater than the electrode potential for the spontaneous redox reaction.
Examples of Batteries
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