Supercapacitor: An emerging power source

Fundamentals and recent advances in electrochemical Supercapacitors, which are recently emerged as an alternative power sources, have been discussed. A general discussion on different types of Supercapacitors namely: electrical doublc layer capacitors (EDLCs) and electrochemical redox Supercapacitors has been presented in view of their configuration, materials and charge storage mechanisms. Particular attention and emphasis are given to the conducting polymers based redox capacitors and their different types (I, II and III) of the configuration according to three different possible combinations of p- and n-doped conducting polymers. Recent investigations in our laboratory on the development of different Supercapacitors have been briefly given. Various possible applications of Supercapacitors as a power source have also been briefly described.