Endo Laboratory

Electric double layer capacitor (EDLC)

　EDLC is an energy storage device, and it is a next-generation device with a possibility of being applied to an auxiliary power supply, and the combined use with photovoltaics equipment and an electromobile. Electric double layer capacitor

The example of application

The hybrid power supply for electromobiles Electric power storage of wind power
The hybrid power supply for electromobiles Electric power storage of wind power

Electric power storage of photovoltaics Memory backup power supplies, Such as a notebook PC and a cellular phone.
Electric power storage of photovoltaics Memory backup power supplies, Such as a notebook PC and a cellular phone.

Operation principle of EDLC

EDLC is a system in which an electric charge is stored performing adsorption and desorption of the ion in electrolysis liquid to electrode.

Operation principle

Feature of EDLC

EDLC is positioned as an energy storage device to which capacity is located in the middle of a capacitor and a rechargeable battery.　The following is mentioned as a feature.

Capacity

  • Rapid charge and rapid electric discharge are possible.
  • A semi permanent life.
  • Large current charge and large.
  • Compared with the usual aluminum electrolytic capacitor, it has about 1 million times the capacity of this.

EDLC is divided into two kinds, a solution system and an organic solution system. This difference is based on the difference in electrolysis liquid. There are merits and demerits in these. It becomes important to change use by the use.

By this laboratory...

In recent years, in the world, the pollution-free electric energy storage device is demanded not only high performance but energy saving. The measure taken into consideration to manufacture, use, disposal, and recycling at the development is pressing need. We observed eco-friendly and safe EDLC. And now, we are tackling research and development to electrodes material and electrolysis liquid in order to realize EDLC with high capacity and high energy density.