  Supercapacitor electrodes fabricated from a nanocomposite consisting of
multiwall carbon nanotubes and titanium oxide nanoparticles were characterized
electrochemically. Conventional electrochemical characterizations cyclic
voltammetry and galvanostatic charge-discharge in a lithium-based electrolyte
gave a specific capacitance of 345 F/g at a current density of 0.1 A/g. New
electrochemical characterization techniques that allow one to obtain the peak
capacitance associated with intercalation and to distinguish between
electrostatic and faradaic charge storage are described and applied to the
electrode measurements. Finally, the maximum energy density obtained was 31
Wh/kg.
