Nanomaterials and nanocomposites for high energy/high power supercapacitors

This study includes nanomaterials and nanocomposites for the fabrication of supercapacitor cells aiming at both high power and high energy densities. Activated carbon powder, multi-wall carbon nanotubes and graphene are considered as electrode materials. Electrochemical double layer supercapacitor cells (EDLCs) have been fabricated and tested to a maximum voltage of 3 V, where TEABF₄ solution has been used as the organic electrolyte. The supercapacitors are proposed for applications of personal electronics, EV and HEV, and displays, depending on their maximum frequency of operation.