Research progress of high performance materials for supercapacitors

Supercapacitors,also called electrochemical capacitors,are newly power devices that have developed rapidly in recent years.They store energy by using either ion adsorption(electrochemical double layer capacitors) or fast surface redox reactions(pseudo-capacitors).A notable improvement in performance has been achieved through recent advances in understanding charge storage mechanism and the development of advanced nanostructured materials.In this article,the progress of electrode material research for supercapacitors was introduced.Beginning with the three basic material including carbon materials,transition-metal oxides and conducting polymer,and combining with the newest nano-technology and its obtained nano-materials,the development trends of supercapacitors with high energy density and its material were analyzed.