3LL-12 : A consecutive doping method for improvement of electrochemical properties of a commercial activated carbon for organic electric double-layer capacitors

In this study, a commercial activated carbon (YP50f) for organic electric double-layer capacitors (EDLC) was improved by a consecutive doping method. The consecutive doping method is a doping method in which nitrogen-doping is used after oxygen-doping. Through this doping method, we successfully prepared a carbon material with high electrical conductivity as well as a large surface area. The surface area of the carbon material was mainly developed during the oxygen-doping process, whereas electrical conductivity was enhanced during the nitrogen-doping process. The consecutively doped carbon exhibited the higher capacitance properties than YP50f when used as an electrode material for organic EDLCs. Consequently, we improved the electrochemical properties of a commercial activated carbon for organic EDLCs by using a consecutive doping method. In addition, we concluded that the consecutive doping method is an effective method for preparing electrode carbon materials for organic EDLCs.