Anthraquinone Grafted Graphene Oxide/Polypyrrole Composites with Enhanced Elec-trochemical Performance

Nowadays, global demand for environmentally friendly high performance energy conversion and storage is increasing rapidly due to the population and economic growth as well as the higher consumption of fossil fuels. Supercapacitors (also called ultracapacitors) are environmental-friendly high capacity capacitors bridging the gap between ordinary capacitors and batteries. They can provide high power capacity, fast charge-discharge rates and long cycle life According to the energy storage mechanism, supercapacitors can be commonly divided into two categories. One is electrochemical double-layer capacitors, the electrode materials of which are usually carbon materials (such as graphene [2-4], carbon nanotube The other is pseudocapacitors that employ conductive polymers and transition metal oxides/hydroxides whose high capacitance and energy density originated from the surface or nearsurface reactions of electroactive species[9-13]

Anthraquinone · Composite material · Graphene · Metallurgy · Nanotechnology · Oxide · Polymer · Polymerization · Polypyrrole · Chemical Engineering · Conducting polymers and applications · Fuel Cells and Related Materials · Materials Science · Supercapacitor Materials and Fabrication