Like an ordinary capacitor, a supercapacitor has two plates that are separated. The plates are made from metal coated with a porous substance such as powdery, activated charcoal, which effectively gives them a bigger area for storing much more charge. ... That means the plates can store more charge at a given voltage.
Construction
Supercapacitoir is a type of polar capacitor and electrolytic solution is used instead of dielectric. The activated carbon is used on electrodes to enlarge the area.
Definition
A Supercapacitor lays in between Capacitor and battery. Also known as Super Cap, Double Layer Capacitor or Ultra-capacitor. Supercapacitor has very high capacitance and low voltage rating as compared to a normal Capacitor.
Working
Supercapacitor stores energy between the ions of the electrolyte & electrode in a double layer of charge.
Types
- Electrostatic Double-Layer Capacitors (EDLC’s)
- Electrochemical Pseudocapacitors
- Hybrid Supercapacitors.
In Supercapacitor, activated carbon is used as medium. When voltage applied, a double electric field is generated which acts like a dielectric medium.
Charge / Discharge Time
Supercapacitors can deliver charge much faster than a battery and store charge more than an electrolytic capacitor per volume unit. That is why it is considered between a battery and an electrolytic capacitor.
- Long Life Cycle
- High Energy Storage
- Fast Charging and Discharging Time
- High Load Currents
- Cordless electric screwdriver, which can be charged in a few minutes.
- LED flashlights in digital cameras.
- For stabilizing power supply in laptops and handheld devices etc.
- Uninterrupted power supply (UPS) where it replaces electrolytic capacitor banks.
- Supercapacitors are used in ICs, RAM, CMOS, Clocks and micro computers etc.
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