Electric Double Layer Capacitors (EDLC)

Electric double layer capacitors (EDLC) are electrochemical double-layer capacitors which are usually referred to as "supercapacitors" or "ultracapacitors". They are electrochemical devices that offer higher capacitance than conventional capacitors. This is possible because of their unique structural features. Unlike conventional capacitors which are made from two plates that are separated by an insulating material, EDLCs consist of two electrically conducting surfaces separated by an electrolyte material. This makes them more efficient as they store energy in two different physical states. EDLCs have low equivalent series resistance (ESR) and are capable of storing and delivering large amounts of charge quickly and with minimal loss of power.

FT0H224ZF Application Field and Working Principle

The FT0H224ZF is a prismatic-shaped double-layer capacitor from Fujitsu developed specifically for high-density energy storage applications. It features an extremely thin construction with two positively charged electrolyte layers embedded inside a non-conductive block, separated by two electrically-conducting surfaces. This enables the FT0H224ZF to achieve extremely high capacitance values in a relatively small volume. The FT0H224ZF can be used in a variety of applications, including energy saving and energy harvesting, as well as starting and driving power applications.

The FT0H224ZF works on the principle of electrochemical double-layer capacitance. This phenomenon occurs as a result of an ions accumulation at the surface of an electrolyte-saturated material, such as an electrode. In the case of the FT0H224ZF, the electrolyte and the electrode are designed such that when positive charge is supplied, anions accumulate at the electrode\'s surface, while the negatively charged ions are attracted towards the electrolyte, creating a double-layer. This double-layer structure stores electrical energy in the form of a charge, which can then be quickly discharged when required.

The FT0H224ZF is ideally suited for applications where high energy density and low ESR are desired. It is suitable for use in automotive, industrial and home energy storage applications. For example, the FT0H224ZF can be used to start or drive a motor, to act as a buffer in AC-DC converters, or to provide power for computer systems, cellphone chargers, and LED lighting.

Supercapacitors

Supercapacitors, also known as ultracapacitors or electrochemical double-layer capacitors (EDLCs) are high-power devices capable of storing huge amounts of energy. Unlike conventional capacitors, supercapacitors can provide short pulses of high power and can be rapidly charged and discharged, making them perfect for applications such as regenerative braking systems. They can also store electrical energy in two different physical states, allowing them to store larger amounts of power than conventional capacitors. Supercapacitors have a relatively low equivalent series resistance (ESR) and are capable of storing and delivering large amounts of charge quickly and with minimal loss of power.

The electrochemical double-layer structure of supercapacitors gives them several advantages over traditional capacitors such as faster charging and discharging times, higher energy density, and lower self-discharge rate. Supercapacitors are capable of storing large amounts of energy in a small volume and can support short bursts of high power with minimal loss. The large capacitance values of supercapacitors also mean they are well-suited for use in kinetic energy harvesting, peak power compensation, and energy storage applications.

There are many different types of supercapacitors, ranging from electrolytic capacitors to organic polymers and redox-flow capacitors. While each type has its own advantages and disadvantages, the most commonly used supercapacitors in most applications are EDLCs in either carbon-based, electrochemical or hybrid forms. These types of supercapacitors can be used in a variety of applications, such as consumer electronics, medical devices, automotive start/stop systems, electric bicycles, and regenerative braking systems.