19-05-2014, 12:24 PM
Simple Capacitors to Supercapacitors - An Overview
ABSTRACT
The paper[3] represents review on the renaissance of a conventional ca-
pacitor to electrochemical double layer capacitor or super capacitor.The
needs of to-days computer world cannot be fulfilled by the conventional
capacitors such as electrostatic and electrolytic capacitors as their util-
ity is limited to certain specific applications. Electric double layer
capacitor (EDLC) uses carbon as the electrodes and stores charge in
the electric field at the interface. It uses either aqueous or nonaque-
ous electrolyte. It gives high power density but low energy density.
So the next generation electrochemical double layer capacitor or super
capacitor which uses transition metal oxide as the electrode material
along with carbon has been under innovation which is expected to de-
liver both desirable power and energy densities. In this overview, an
attempt to provide information on the chronological order of develop-
ment of capacitors and the related research work is made