Realizing a supercapacitor in an electrical circuit

Mikio Fukuhara, Tomoyuki Kuroda, Fumihiko Hasegawa

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


Capacitors are commonly used in electronic resonance circuits; however, capacitors have not been used for storing large amounts of electrical energy in electrical circuits. Here, we report a superior RC circuit which serves as an electrical storage system characterized by quick charging and long-term discharging of electricity. The improved energy storage characteristics in this mixed electric circuit (R1+R2C1) with small resistor R1, large resistor R2, and large capacitor C1 are derived from the damming effect by large R2 in simple parallel R2C1 circuit. However, no research work has been carried out previously on the use of capacitors as electrical energy storage devices in circuits. Combined with nanotechnology, we hope that our finding will play a remarkable role in a variety of applications such as hybrid electric vehicles and backup power supplies.

Original languageEnglish
Article number202904
JournalApplied Physics Letters
Issue number20
Publication statusPublished - 2014 Nov 17

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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