A galvanic cell (also known as a voltaic cell) is a type of electrochemical cell that converts chemical energy into electrical energy.

It works through a spontaneous redox reaction, where electrons flow from the anode (oxidation) to the cathode (reduction) via an external circuit.

Example: Zinc-copper galvanic cell.

Batteries are portable energy sources based on the principles of galvanic cells.

They consist of two electrodes (anode and cathode) and an electrolyte, which allows the movement of ions.

The chemical reactions occurring in the battery generate an electrical potential difference between the electrodes, producing a current.

Portable Energy Sources: Used in gadgets like smartphones, laptops, and cameras.

Electric Vehicles (EVs): Lithium-ion batteries are commonly used in EVs.

Renewable Energy Storage: Batteries store energy from solar panels and wind turbines.

Medical Devices: Pacemakers and hearing aids use small batteries.

Powering Remote Devices: Galvanic cells are used in remote controls, calculators, etc.

Anode and Cathode: The locations where oxidation and reduction occur.

Electrolyte: Conducts ions between the anode and cathode, allowing the flow of charge.

Redox Reactions: The reactions that involve the transfer of electrons.

Potential Difference: The voltage produced by the galvanic cell or battery.