22/06/2021
A battery is a device consisting of one or more electrochemical cells with external connections for powering electrical devices such as flashlights, mobile phones and electric cars.
A battery cell is made up of three components:
An anode ( negative charge )
An cathode ( positive charge )
And the electrolyte
A dry cell is a common type of battery used today . It basically converts stored chemical energy into electrical energy.
In the dry cell ,Zinc is the anode (-), the graphite core is the cathode (+) and Ammonium Chloride paste acts as an electrode. Due to a chemical reaction within the battery the anode builds up an excess of electrons . This causes an electrical difference between the anode and the cathode. The electrons want to rearrange themselves and displace the extra electrons in the cathode.
However, the electrolyte ensures the electrons cannot travel directly to the cathode.