Review of Graphene Supercapacitors and Different Modified Graphene Electrodes

Faced with the exhaustion of traditional energy sources, development new devices is current priority. Supercapacitor a type storage device high power density and long cycle life. Carbon material, metal oxide conductive polymer are three common electrode materials supercapacitors. Based on China’s situation, this paper puts forward ideas from coal to graphene In addition, research progress supercapacitors summarized, including principle supercapacitors, preparation methods graphene, different modification, some possible scientific problems in process modified electrodes also reviewed prospected.