why do we charge the battery after it is discharged ? what happened during this process ?
Answers
Answer:
we charge battery to do our smart phone work and when it is In charging electric current flow in charge and charger to battery
During charging of battery, external DC source is applied to the battery. The negative terminal of the DC source is connected to the negative plate or anode of the battery and positive terminal of the source is connected to the positive plate or cathode of the battery.
Now, due to external DC source, electrons will be injected in the anode. Reduction reaction takes place in the anode instead of cathode. Actually in the case of discharge of battery, reduction reaction takes place at cathode. Due to this reduction reaction, the anode material will regain electrons and returns to its previous state when the battery was not discharged.
As the positive terminal of the DC source is connected to the cathode, the electrons of this electrode will be attracted by this positive terminal of DC source. As a result oxidation reaction takes place at the cathode and cathode material regains its previous state (when it was not discharged). This is the overall basic of charging of battery.
During charging of battery, the secondary battery turns to its original charged state and ready for further discharging of battery.
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