SYNTHESIS OF POLYANILINE-BASED CARBON NANOTUBES AND THEIR ELECTROCHEMICAL PERFORMANCE FOR SUPERCAPACITOR

摘要

Supercapacitors, which are also called electrochemical capacitors (ECs) or ultracapacitors, have been studied for application in digital communication devices, digital cameras, mobile phone, power supplies, and hybrid electric vehicles (HEV), because of their higher power density and longer cycle life compared to secondary batteries and their higher energy density compared to conventional electrical double-layer capacitors. As is well known, the capacity performance of supercapacitors depends on active electrodes based on carbon materials, metal oxides, and conducting polymers. Among these materials, carbon-based materials have been considered promising for application in electrodes because of their low cost, chemical stability, excellent conductivity, and availability [1,2].