Supercapacitor electrochemical double-layer capacitor

Recently supercapacitors are attracting much attention as new power sources complementary to secondary batteries. The term supercapacitors is used for both electrochemical double-layer capacitors (EDLCs) and pseudocapacitors. The EDLCs are based on the double-layer capacitance at carbon electrodes of high specific areas, while the pseudocapacitors are based on the pseudocapacitance of the films of redox oxides (Ru02, Ir02, etc.) or redox polymers (polypyrrole, polythiophene, etc.). 

Supercapacitors are electrochemical double-layer capacitors (EDLCs) with moderate energy storage capability but high power. Their field of application extends from backup... 

Electrochemical double-layer capacitors, often called supercapacitors, can store energy via reversible interfacial electrosorption of ions, and are used to power portable electronic equipment, hybrid electronic vehicle, and other devices. Supercapacitors have fast-charging and discharging rates and the ability to sustain millions of cycles. They bridge the gap between the batteries that offer high energy densities but are slow and between conventional electrolytic capacitors that are fast but have low energy densities. 

Porous electrodes are ubiquitous in electrochemical energy conversion and storage. They are needed in photoelectrochemical cells, electrochemical double layer capacitors, supercapacitors with pseudocapacitive effect, batteries, and fuel cells. 

Electrochemical double layer capacitors (EDLCs), also known as supercapacitors, are today advancing as one of the most promising energy storage technology. In EDLCs,... 

Electrochemical capacitors, also referred as supercapacitors or ultracapacitors, store energy using either ion adsorption (electrochemical double-layer capacitors EDLCs) or fast surface redox reactions (pseudocapacitors). In recent years, they have... 

In recent years there has been increasing interest in the power capacitors, ultracapacitors or supercapacitors based on electrochemical systems. These include electric double layer capacitor (EDLC) types based on carbon electrodes with suitable electrolyte systems, and electrochemical capacitors with pseudocapacitance [34,35],... 

The double-layer capacitor is one of the electrochemical capacitors showing intermediate performances between conventional capacitors and rechargeable batteries from the viewpoint of energy and power densities. Although the terms supercapacitor and ultracapacitor are often used for double-layer capacitors, in a sense that they have higher capacitance than conventional capacitors (ceramic, film, aluminum electrolytic, or tantalum electrolytic capacitors), these terms are not to be used because they are the trademarks of certain companies products. 

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