New mega-farad ultracapacitors

Author

Bakhoum, Ezzat G.

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of West Florida, Pensacola, FL

Volume

56

Issue

1

fYear

2009

fDate

1/1/2009 12:00:00 AM

Firstpage

14

Lastpage

21

Abstract

This paper reports the successful creation of a new ultracapacitor structure that offers a capacitance density on the order of 100 to 200 Farads per cubic centimeter; versus the current state of the art capacitance density of 1 F/cm³. The principle behind the new ultracapacitor structure is the insertion of a few nanometers-thick layer of barium strontium titanate as an interface between an activated carbon electrode and a suitable electrolyte, such as acetonitrile or propylene carbonate. The new ultracapacitors are highly needed in hybrid vehicle applications, because any significant increase in the energy storage capability of the ultracapacitors leads to substantial improvement in the fuel efficiency of hybrid vehicles.

Keywords

barium compounds; carbon; electrodes; electrolytes; hybrid electric vehicles; nanostructured materials; organic compounds; strontium compounds; supercapacitors; BaSrTiO₃-C; acetonitrile; activated carbon electrode; barium strontium titanate; capacitance density; electrolyte; hybrid vehicle; mega-Farad ultracapacitors; nanometers-thick layer; propylene carbonate; super capacitors; ultracapacitor structure; Capacitors; Ceramics; Dielectric materials; Electrodes; Electrokinetics; High-K gate dielectrics; Organic materials; Spectroscopy; Supercapacitors; Testing;

fLanguage

English

Journal_Title

Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on

Publisher

ieee

ISSN

0885-3010

Type

jour

DOI

10.1109/TUFFC.2009.1000

Filename

4775259