Electrochemical study of activated carbon-semiconducting oxide composites as …

Abstract The energy storage of activated carbon modified with a semiconducting oxide TiO2 is studied. The composite was prepared by mixing nanosize TiO2 and activated carbon through a means of ultrasonic vibration in ethanol solution for 30 min. It was found that with modification of TiO2, the specific capacitance of activated carbon measured at 0.65 mA/cm2 was increased from 47.2 to 63.1 F g�…