Batteries and capacitors seem
similar as they both store and release electrical energy. However, there are
crucial differences between them that impact their potential applications due
to how they function differently.
A true capacitor stores its energy in an
electric field (akin to a magnetic field for a magnet). A battery cell stores
its energy by creating a chemical that would happily decompose into a more
stable chemical.
If your question, though, is What is the difference between an electrolytic capacitor and a rechargeable battery cell?
➤ They both store charge but the charge is not
stored in the same way. A battery uses chemical energy for storage but a
capacitor stores charge in the electric field of insulated plates.
➤ The most important thing is that the battery releases energy at a more or less constant or flat voltage until depleted, whereas the capacitor the voltage is directly proportional to the charge and so has a linear voltage drop off with current withdrawal.
➤ The most important thing is that the battery releases energy at a more or less constant or flat voltage until depleted, whereas the capacitor the voltage is directly proportional to the charge and so has a linear voltage drop off with current withdrawal.
➤ Potential
difference generated by a battery is constant, whereas, that generated by a
charged capacitor changes exponentially with time.
➤ Though
both the components are used to store energy, they achieve it in different ways
being, battery stores electrical energy in the form of chemical energy,
whereas, a capacitor stores it in the form of magnetic field.
➤ While
charging a battery the polarity of the circuit must be reverse of that while
using it, whereas, while charging a capacitor the polarity must be the same as
it should be while using it.
➤ The potential energy in a capacitor is stored
in an electric field, but Battery stores its potential energy in a chemical
form.
➤ Discharging rate for capacitors are directly
related to the conduction capabilities of the capacitors plates. Other hand
When a battery is discharging it can be slower than a capacitor ability to
discharge.
➤ A capacitor is able to discharge and charge
faster than a battery because of this energy storage method also.
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Content source by-
https://www.quora.com/What-is-the-difference-between-a-capacitor-and-a-battery