| 초록 |
Carbon based electrode is made good using in electrochemical energy storagesystems. Especially, graphene electrode in vanadium redox flow batteries (VRFBs) have attracted increasing interest, because electrode has a key role to play in VRFBs by providing sites for the electrochemicalreactions in VRFBs.Graphene materials were prepared from a graphite, by means of oxidation/exfoliation/reduction. The oxidation of graphite was carried out by modified Hummer method. The exfoliation of graphite oxide was carried out by ultrasonicator and the reduction was carried out by hydrazine hydrate. Prepared graphene/polyacrylonitrile(PAN) was mixed in solvent and drying in vacuum oven. So graphene/PAN composites gained by this process. This composites were investigated in physical and electrochemical aspects. |
