Activated carbon (AC) is composed of reduced graphene oxide (rGO) and has been synthesized from natural material that is coconut shell (Cocos nucifera) by dry mixing method. The purpose of this research is to know the effect of adding rGO mass on the electrode to the specific capacitance value. The rGO mass variation used is 10-25 wt%. AC/rGO electrodes were tested by cyclic voltammetry to determine their specific capacitance values ​​at a scan rate of 100 mV/s with Sodium Sulphate (Na₂SO₄) 1 M in the electrolyte solution and a potential range at  0-1 Volt. Electrode by 90 wt% AC composition and 10 wt% rGO have a higher specific capacitance value of 6.26 F/g than other electrode mass compositions as well as the activated carbon individual electrodes having a specific capacitance value of 3.38 F / g. Therefore it can be concluded that with the addition of rGO material can increase the value of specific capacitance on the electrode.