the same or like parts fig1 is a flow chart illustrating a method for manufacturing an electrode of a supercapacitor according to one embodiment of the present invention first at step 110 a pan fabric was provided the pan fabric is made from pan fibers the pan fibers each has a diameter of about 50 500 nm the pan fiber could be made by electrospinning then at step 120 the pan fabric was heat treated to carbonize the pan fibers to produce carbon fibers thereby obtaining a carbon fiber fabric the carbon fiber fabric comprises carbon fibers each having a diameter of about 50 500 nm the surface of the carbon fiber has nano pores of about 1 50 nm in diameter and a total surface area of the nano pores accounts for 85 95 of a total surface area of the carbon fibers specifically the step 120 for heat treating the pan fabric comprises two heating stages in the first heating stage the pan fabric was heated to a first heating temperature of about 200 300 u00b0 c and the first heating temperature was maintained for about 60 120 minutes to oxidize the pan fabric afterward in the second heating stage the pan fabric was heated to a second heating temperature of about 800 1000 u00b0 c and the second heating temperature was maintained for about 3 9 minutes to form the carbon fiber fabric in this application the duration of the time used for maintaining specific heating.