Amphiphilic carbonaceous material(ACM)dispersed in nanoscale in alkaline aqueous solutions was synthesized from coal tar pitch.The structure and surface properties of such samples were then characterized by X-ray diffraction(XRD),Fourier transform infrared spectrometer(FTIR),and X-ray photoelectron spectroscopy (XPS),respectively.It was shown that ACM is a kind of special precursor which has plenty of functional groups,widened d002,and is of small particle size simultaneously.Therefore,ACM could guarantee subsequent ACM-based activated carbons,(AACs)notable SUrface properties,that is high specific surface area of 2380 m2 g-1 as well as well-developed mesoporous structure although a low ratio of KOH/ACM(1:1)was employed.In particular,a sample named AAC-3 whose total pore volume is 1.86 cm3 g-1 and mesopore proportion is up to 38％gives sample AAC outstanding electrochemical performances during a series of tests including galvanostatic charge/discharge and CV.The specific capacitance of AAC-3 is 289.5 F g-1 and still maintains 92％of its original capacity after 900 recycles.