Energy storage of double layer capacitors

What are electric double layer capacitors?

Electric double layer capacitors are fundamentally different types of electrical energy storage devices [3, 4, 5], which are also known as supercapacitors (SC), ultracapacitors or (obsolete name) liquid ionistors.

How does a supercapacitor store energy?

Ragone plot of different electrochemical energy storage devices Supercapacitor stores energy based on different charge storage mechanisms, namely electric double-layer capacitor (EDLC), pseudocapacitor, and hybrid capacitor. Supercapacitor stores energy in the form of accumulation of charges at the electrode/electrolyte interface as a double layer.

Can carbon-based materials be used as electrodes for electric double-layer capacitors?

As a part of this renewed interest in electric double-layer capacitors (EDLCs), researchers began seeking new strategies to synthesize high surface area porous carbon-based materials as electrodes for EDLCs to obtain high specific capacitance and high energy density.

What is edlsc electric double layer capacitor?

EDLSC electric double layer capacitor HDCM highly disperse carbonaceous materials MWCNT multiwalled carbon nanotubes

How EDLC works in a supercapacitor?

The EDLC operates in electrostatic mechanism, and the energy is stored in electric double layer (EDL) formed on the electrode − electrolyte interphase. For the other two types of supercapacitors, the energy is stored in chemical bonds of chemical materials through electrochemical redox reactions.

What are the three types of supercapacitors?

According to the principle of energy storage, supercapacitors are divided into three categories: electrical double layer capacitors (EDLCs), pseudo-supercapacitors and hybrid supercapacitors. The EDLC operates in electrostatic mechanism, and the energy is stored in electric double layer (EDL) formed on the electrode − electrolyte interphase.