Here we report the preparation of nano-actived carbon (nm-AC) electrode materials with different pore size distributions by roller vibration milling at room temperature. The mechanical vibration milling can obtain nm-AC of 30-50nm

and improve the crystalline of prepared nm-AC. Meanwhile we synthesized nano-bismuth oxide doped MnO2 by sol-gel methods. Based on a variety of measurements

such as XRD

TEM

AFM

BET

electro-chemical analysis

we experienced the microstructure and the electrochemical performance of the nano-composite electrode materials. Through analysis we found that mixing manganese dioxide materials with nm-AC in optimum weight ratio (10%) may increase the specific capacitance of nm-AC effectively. And the mixed MnO2 / active carbon raw material was modified by vibration milling. We used the composed nano-actived carbon/MnO2 electrode materials by vibration milling and sol-gel methods in super-capacitors.