AC/graphite capacitor has been designed in organic electrolytes. This kind of capacitor has some advantages over the traditional electric-double layer capacitor(EDLC) in the terms of high energy. And we tried to develop the titanium oxide to be used as carbon-based composite materials by using ultrasound. The performances of the cells with such composited materials have been compared with the ones with an activated carbon mixed with carbon nanotubes and electrochemically deposited titanium oxides. Electrolytes using Li+ and TEABF4 have been picked up for this investigation. The state of Li+ dissolved in PC (propylene carbonate) solvent has also been clarified. Composite electrode showed relatively good electrochemical behaviors better than Activated carbon electrode and during cycling, composite electrode present O.34F/cm2 of specific capacitance in LiPF6/PC